CN104098827A - High-strength PE water supply pipe material and preparation method thereof - Google Patents
High-strength PE water supply pipe material and preparation method thereof Download PDFInfo
- Publication number
- CN104098827A CN104098827A CN201410271966.9A CN201410271966A CN104098827A CN 104098827 A CN104098827 A CN 104098827A CN 201410271966 A CN201410271966 A CN 201410271966A CN 104098827 A CN104098827 A CN 104098827A
- Authority
- CN
- China
- Prior art keywords
- parts
- acid
- strength
- water supply
- supply pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a high-strength PE water supply pipe material and a preparation method thereof. The high-strength PE water supply pipe material is prepared from the following raw materials in parts by weight: 38-52 parts of linear low density polyethylene, 22-32 parts of polydicyclopentadiene, 10-15 parts of ethylene propylene diene monomer, 2-3 parts of mono-alkoxy unsaturated fatty acid titanate, 3-5 parts of dicumyl peroxide, 2-4 parts of p-benzoquinone dioxime, 1.5-2.5 parts of tocopheryl acetate, 2-3 parts of aluminium distearate, 1-2 parts of zinc isoocatanoate, 2.5-4.5 parts of ethoxylation lauramide, 1-2 parts of calcium montanate, 5-10 parts of nickel powder, 2-4 parts of di(3,4-dimethylbenzylidene)sorbitol, 3-5 parts of carnauba wax, 2-4 parts of glycerin monostearate, 10-15 parts of carbide slag, 8-16 parts of calcium hexaluminate, 5-10 parts of brucite nano-fiber, 12-18 parts of polypropylene glycol adipate, 17-26 parts of filling master batch, 2-3 parts of bisphenol A tetraethal diphosphite, and 1-2 parts of dilauryl thiodipropionate. The PE water supply pipe material provided by the invention has higher tensile strength and compression strength, simultaneously has excellent heat resistance, corrosion resistance and ageing resistance, is high in security coefficient, stable in performance, and wide in application prospect, and the service life of the high-strength PE water supply pipe material can reach 50 years above.
Description
Technical field
The present invention relates to a kind of PE tubing and preparation method thereof, be specifically related to a kind of high strength PE water-feeding pipes and preparation method thereof.
Background technology
PE tubing is because having the features such as intensity is high, high temperature resistant, anticorrosive, nontoxic, wear-resisting, and the manufacture field that is widely used in feeding water, is traditional iron and steel tubing, the regeneration product of polyvinyl chloride drinking-water pipe.In recent years, along with the fast development of scientific and technological level and improving constantly of living standards of the people, more and more high to the performance requriements of PE water-feeding pipes, PE water-feeding pipes physical strength is in the market poor, work-ing life is short, is not suitable for severe environment and uses, and has limited its range of application.Therefore, be badly in need of a kind of high strength PE water-feeding pipes of exploitation, to meet market demands.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of high strength PE water-feeding pipes and preparation method thereof is provided, the PE tubing making has higher tensile strength and compressive strength, has greatly improved the work-ing life of PE pipe.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of high strength PE water-feeding pipes, raw material by following weight part is made: linear low density polyethylene 38-52, polydicyclopentadiene 22-32, terpolymer EP rubber 10-15, monoalkoxy unsaturated fatty acids titanic acid ester 2-3, dicumyl peroxide 3-5, p-benzoqui(o)none dioxime 2-4, VITAMIN E ACETATE 1.5-2.5, double stearic acid aluminium 2-3, isocaprylic acid zinc 1-2, ethoxylation laurylamide 2.5-4.5, montanic acid calcium 1-2, nickel powder 5-10, two Asias (3, 4-dimethyl) benzyl Sorbitol Powder 2-4, carnauba wax 3-5, glyceryl monostearate 2-4, carbide slag 10-15, calcium hexaluminate 8-16, Nano-meter Brucite Fiber 5-10, polypropylene adipate (PPA) 12-18, filler parent granule 17-26, diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester 2-3, Tyox B 1-2,
The preparation method of described filler parent granule is as follows: a, take the raw material of following weight part: serpentine 35-45, diatomite 25-35, agalmatolite 15-20, peridotites 10-15, mountain Yu oxygen base polydimethylsiloxane 1.5-2.5, distearyl acyl-oxygen sec.-propyl Aluminate 2-3, dinoctyl phthalate 10-15, hexanodioic acid two isodecyl alkyl ester 10-15, decyl tetradecyl alcohol cetearyl alcohol acid esters 1.5-2.5, two PIVALIC ACID CRUDE (25) polyoxypropylene ester 2-3, stearic acid 3-6, OP wax 4-8, PAUR 30-40, methyl methacrylate-acrylonitrile-butadiene-styrene copolymer 25-35, Atactic Polypropelene 45-55, b, get diatomite, agalmatolite mixes, pulverized 150-200 mesh sieve, 850-900 ℃ of calcining 1-2h, after being cooled to room temperature, add mountain Yu oxygen base polydimethylsiloxane, dinoctyl phthalate, decyl tetradecyl alcohol cetearyl alcohol acid esters, after high-speed mixing 3-5min, together input in double-screw extruding pelletizing machine with methyl methacrylate-acrylonitrile-butadiene-styrene copolymer, melt extrude granulation and obtain master batch A, c, get serpentine, peridotites mixes, pulverized 150-200 mesh sieve, 940-980 ℃ of calcining 1-2h, after being cooled to room temperature, add distearyl acyl-oxygen sec.-propyl Aluminate, hexanodioic acid two isodecyl alkyl esters, two PIVALIC ACID CRUDE (25) polyoxypropylene esters, after high-speed mixing 4-6min, together input in double-screw extruding pelletizing machine with PAUR, melt extrude granulation and obtain mother particle B, d, the above-mentioned master batch A making, mother particle B are mixed in rear input double-screw extruding pelletizing machine with Atactic Polypropelene, OP wax, stearic acid, melt extrude granulation and obtain required filler parent granule.
The preparation method of high strength PE water-feeding pipes of the present invention, comprises the following steps:
(1) get in linear low density polyethylene, monoalkoxy unsaturated fatty acids titanic acid ester, dicumyl peroxide, p-benzoqui(o)none dioxime, double stearic acid aluminium, isocaprylic acid zinc, ethoxylation laurylamide, montanic acid calcium, carnauba wax, carbide slag, calcium hexaluminate, polypropylene adipate (PPA), diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester input kneader and mediate, treat that material frictional heat is to 90-100 ℃, material is entered in cold mixer and lowered the temperature, discharging when temperature drops to below 50 ℃, obtains compound A;
(2) get in surplus stock input kneader and mediate, treat that material frictional heat, to 80-90 ℃, enters material in cold mixer and lowers the temperature, discharging when temperature drops to below 40 ℃, obtains compound B;
(3) deliver to extrusion moulding in twin screw extruder after the compound A of above-mentioned gained and compound B are mixed and make tubing.
Beneficial effect of the present invention:
PE tubing of the present invention has higher tensile strength and compressive strength, has good thermotolerance, erosion resistance and resistance to deterioration simultaneously, and safety coefficient is high, stable performance, and can reach more than 50 years work-ing life, has a extensive future.
Embodiment
A kind of high strength PE water-feeding pipes, raw material by following weight (kg) is made: linear low density polyethylene 46, polydicyclopentadiene 28, terpolymer EP rubber 12, monoalkoxy unsaturated fatty acids titanic acid ester 2.5, dicumyl peroxide 4, p-benzoqui(o)none dioxime 3, VITAMIN E ACETATE 2, double stearic acid aluminium 2.5, isocaprylic acid zinc 1.5, ethoxylation laurylamide 3.5, montanic acid calcium 1.5, nickel powder 7, two Asias (3, 4-dimethyl) benzyl Sorbitol Powder 3, carnauba wax 4, glyceryl monostearate 3, carbide slag 12, calcium hexaluminate 12, Nano-meter Brucite Fiber 8, polypropylene adipate (PPA) 16, filler parent granule 23, diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester 2.5, Tyox B 1.5,
The preparation method of described filler parent granule is as follows: a, take the raw material of following weight (kg): serpentine 40, diatomite 30, agalmatolite 18, peridotites 12, mountain Yu oxygen base polydimethylsiloxane 2, distearyl acyl-oxygen sec.-propyl Aluminate 2.5, dinoctyl phthalate 12, hexanodioic acid two isodecyl alkyl esters 12, decyl tetradecyl alcohol cetearyl alcohol acid esters 2, two PIVALIC ACID CRUDE (25) polyoxypropylene esters 2.5, stearic acid 4, OP wax 5, PAUR 37, methyl methacrylate-acrylonitrile-butadiene-styrene copolymer 32, Atactic Polypropelene 50, b, get diatomite, agalmatolite mixes, pulverized 200 mesh sieves, 860 ℃ of calcining 2h, after being cooled to room temperature, add mountain Yu oxygen base polydimethylsiloxane, dinoctyl phthalate, decyl tetradecyl alcohol cetearyl alcohol acid esters, after high-speed mixing 4min, together input in double-screw extruding pelletizing machine with methyl methacrylate-acrylonitrile-butadiene-styrene copolymer, melt extrude granulation and obtain master batch A, c, get serpentine, peridotites mixes, pulverized 150 mesh sieves, 960 ℃ of calcining 2h, after being cooled to room temperature, add distearyl acyl-oxygen sec.-propyl Aluminate, hexanodioic acid two isodecyl alkyl esters, two PIVALIC ACID CRUDE (25) polyoxypropylene esters, after high-speed mixing 6min, together input in double-screw extruding pelletizing machine with PAUR, melt extrude granulation and obtain mother particle B, d, the above-mentioned master batch A making, mother particle B are mixed in rear input double-screw extruding pelletizing machine with Atactic Polypropelene, OP wax, stearic acid, melt extrude granulation and obtain required filler parent granule.
The preparation method of high strength PE water-feeding pipes, comprises the following steps:
(1) get in linear low density polyethylene, monoalkoxy unsaturated fatty acids titanic acid ester, dicumyl peroxide, p-benzoqui(o)none dioxime, double stearic acid aluminium, isocaprylic acid zinc, ethoxylation laurylamide, montanic acid calcium, carnauba wax, carbide slag, calcium hexaluminate, polypropylene adipate (PPA), diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester input kneader and mediate, treat material frictional heat to 95 ℃, material is entered in cold mixer and lowered the temperature, discharging when temperature drops to below 50 ℃, obtains compound A;
(2) get in surplus stock input kneader and mediate, treat material frictional heat to 85 ℃, material is entered in cold mixer and lowered the temperature, discharging when temperature drops to below 40 ℃, obtains compound B;
(3) deliver to extrusion moulding in twin screw extruder after the compound A of above-mentioned gained and compound B are mixed and make tubing.
The above-mentioned PE water-feeding pipes Performance Detection making is as shown in the table:
| Test item | Detected result |
| Tensile strength (MPa) | 52 |
| Yield strength (MPa) | 44 |
| Modulus in tension (MPa) | 1650 |
| Bending elastic modulus (GPa) | 2.1 |
| Ultimate compression strength (MPa) | 32 |
| Rate extending longitudinally (%) | 880 |
| Aging coefficient (70 ℃, 144h) | 0.87 |
| Vicat softening temperature (℃) | 105 |
Claims (2)
1. a high strength PE water-feeding pipes, it is characterized in that, raw material by following weight part is made: linear low density polyethylene 38-52, polydicyclopentadiene 22-32, terpolymer EP rubber 10-15, monoalkoxy unsaturated fatty acids titanic acid ester 2-3, dicumyl peroxide 3-5, p-benzoqui(o)none dioxime 2-4, VITAMIN E ACETATE 1.5-2.5, double stearic acid aluminium 2-3, isocaprylic acid zinc 1-2, ethoxylation laurylamide 2.5-4.5, montanic acid calcium 1-2, nickel powder 5-10, two Asias (3, 4-dimethyl) benzyl Sorbitol Powder 2-4, carnauba wax 3-5, glyceryl monostearate 2-4, carbide slag 10-15, calcium hexaluminate 8-16, Nano-meter Brucite Fiber 5-10, polypropylene adipate (PPA) 12-18, filler parent granule 17-26, diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester 2-3, Tyox B 1-2,
The preparation method of described filler parent granule is as follows: a, take the raw material of following weight part: serpentine 35-45, diatomite 25-35, agalmatolite 15-20, peridotites 10-15, mountain Yu oxygen base polydimethylsiloxane 1.5-2.5, distearyl acyl-oxygen sec.-propyl Aluminate 2-3, dinoctyl phthalate 10-15, hexanodioic acid two isodecyl alkyl ester 10-15, decyl tetradecyl alcohol cetearyl alcohol acid esters 1.5-2.5, two PIVALIC ACID CRUDE (25) polyoxypropylene ester 2-3, stearic acid 3-6, OP wax 4-8, PAUR 30-40, methyl methacrylate-acrylonitrile-butadiene-styrene copolymer 25-35, Atactic Polypropelene 45-55, b, get diatomite, agalmatolite mixes, pulverized 150-200 mesh sieve, 850-900 ℃ of calcining 1-2h, after being cooled to room temperature, add mountain Yu oxygen base polydimethylsiloxane, dinoctyl phthalate, decyl tetradecyl alcohol cetearyl alcohol acid esters, after high-speed mixing 3-5min, together input in double-screw extruding pelletizing machine with methyl methacrylate-acrylonitrile-butadiene-styrene copolymer, melt extrude granulation and obtain master batch A, c, get serpentine, peridotites mixes, pulverized 150-200 mesh sieve, 940-980 ℃ of calcining 1-2h, after being cooled to room temperature, add distearyl acyl-oxygen sec.-propyl Aluminate, hexanodioic acid two isodecyl alkyl esters, two PIVALIC ACID CRUDE (25) polyoxypropylene esters, after high-speed mixing 4-6min, together input in double-screw extruding pelletizing machine with PAUR, melt extrude granulation and obtain mother particle B, d, the above-mentioned master batch A making, mother particle B are mixed in rear input double-screw extruding pelletizing machine with Atactic Polypropelene, OP wax, stearic acid, melt extrude granulation and obtain required filler parent granule.
2. the preparation method of high strength PE water-feeding pipes according to claim 1, is characterized in that comprising the following steps:
(1) get in linear low density polyethylene, monoalkoxy unsaturated fatty acids titanic acid ester, dicumyl peroxide, p-benzoqui(o)none dioxime, double stearic acid aluminium, isocaprylic acid zinc, ethoxylation laurylamide, montanic acid calcium, carnauba wax, carbide slag, calcium hexaluminate, polypropylene adipate (PPA), diphosphorous acid dihydroxyphenyl propane (four) hexadecanol ester input kneader and mediate, treat that material frictional heat is to 90-100 ℃, material is entered in cold mixer and lowered the temperature, discharging when temperature drops to below 50 ℃, obtains compound A;
(2) get in surplus stock input kneader and mediate, treat that material frictional heat, to 80-90 ℃, enters material in cold mixer and lowers the temperature, discharging when temperature drops to below 40 ℃, obtains compound B;
(3) deliver to extrusion moulding in twin screw extruder after the compound A of above-mentioned gained and compound B are mixed and make tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271966.9A CN104098827A (en) | 2014-06-18 | 2014-06-18 | High-strength PE water supply pipe material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271966.9A CN104098827A (en) | 2014-06-18 | 2014-06-18 | High-strength PE water supply pipe material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104098827A true CN104098827A (en) | 2014-10-15 |
Family
ID=51667396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410271966.9A Pending CN104098827A (en) | 2014-06-18 | 2014-06-18 | High-strength PE water supply pipe material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104098827A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385007A (en) * | 2015-12-09 | 2016-03-09 | 无锡拓能自动化科技有限公司 | Preparation method of polyethylene pipe for delivering chemical products |
| CN106366411A (en) * | 2016-08-31 | 2017-02-01 | 安庆市悦发管业有限公司 | Nemalite-reinforced PE (polyethylene) bellows and a production method thereof |
| CN109054210A (en) * | 2018-07-24 | 2018-12-21 | 苏州环亚软管塑业有限公司 | A kind of preparation method for the plastic flexible pipe adding chlorosulfonated polyethylene |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06271716A (en) * | 1993-03-18 | 1994-09-27 | Idemitsu Kosan Co Ltd | Waterproof sheet |
| US6569915B1 (en) * | 2000-10-16 | 2003-05-27 | Shawcor Ltd. | Crosslinked, heat shrinkable polypropylene compositions |
| JP2003266601A (en) * | 2002-03-14 | 2003-09-24 | Toppan Printing Co Ltd | Multilayer film, packaging material using the same, and package |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
-
2014
- 2014-06-18 CN CN201410271966.9A patent/CN104098827A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06271716A (en) * | 1993-03-18 | 1994-09-27 | Idemitsu Kosan Co Ltd | Waterproof sheet |
| US6569915B1 (en) * | 2000-10-16 | 2003-05-27 | Shawcor Ltd. | Crosslinked, heat shrinkable polypropylene compositions |
| JP2003266601A (en) * | 2002-03-14 | 2003-09-24 | Toppan Printing Co Ltd | Multilayer film, packaging material using the same, and package |
| CN103756088A (en) * | 2013-12-26 | 2014-04-30 | 宁波波尔管业开发有限公司 | High-temperature, temperature-resisting and wear-resisting polyethylene pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385007A (en) * | 2015-12-09 | 2016-03-09 | 无锡拓能自动化科技有限公司 | Preparation method of polyethylene pipe for delivering chemical products |
| CN106366411A (en) * | 2016-08-31 | 2017-02-01 | 安庆市悦发管业有限公司 | Nemalite-reinforced PE (polyethylene) bellows and a production method thereof |
| CN109054210A (en) * | 2018-07-24 | 2018-12-21 | 苏州环亚软管塑业有限公司 | A kind of preparation method for the plastic flexible pipe adding chlorosulfonated polyethylene |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9056965B2 (en) | Process for mixing polyvinyl chloride with a bio-based plasticizer | |
| CN103571039B (en) | High melting means polypropene composition and preparation method thereof | |
| KR101214800B1 (en) | 3 layer structure impact water pipe with c-pvc center layer | |
| WO2013020346A1 (en) | High-strength wear-resistant plastic-wood composite material and preparation method thereof | |
| CN104098823A (en) | Mould-prevention polyethylene water supply tubular product and preparation method thereof | |
| KR100981118B1 (en) | 3 layer high impact pvc water pipe | |
| CN104098827A (en) | High-strength PE water supply pipe material and preparation method thereof | |
| CN109503937A (en) | A kind of preparation method of high fluidity high-modulus high heat resistance thin-walled injection moulding acrylic resin | |
| CN102996913A (en) | Novel high-strength HDPE (High-Density Polyethylene) composite tube and production method thereof | |
| KR20140074887A (en) | Polyethylene additive compositions and articles made from same | |
| CN111073170A (en) | Environment-friendly high-performance PVC (polyvinyl chloride) water supply pipe and preparation method thereof | |
| CN104098850A (en) | Anti-impact PVC water supply pipe and preparation method thereof | |
| CN101671470B (en) | Fire-retardant high-ductility composite material and manufacturing method thereof | |
| EP2894196B1 (en) | Rigid ipvc pipe resin composition and rigid ipvc pipe, with excellent stiffness and resistance to water pressure | |
| CN103509263A (en) | Environment-friendly adding type polyethylene flame-retardant masterbatch and preparation method thereof | |
| CN104098852A (en) | Low temperature resistant PVC water supply pipe used in severe cold region and preparation method thereof | |
| CN107540951A (en) | A kind of preparation method of the transparent polypropylene composition with low-temperature impact property | |
| US20200407542A1 (en) | Method for preparing organometallic composite material | |
| CN104098822A (en) | Insect-and-ant prevention polyethylene water supply tubular product and preparation method thereof | |
| CN104098821A (en) | Outdoor feedwater anti-ageing PE tubular product and preparation method thereof | |
| CN112194848B (en) | Polypropylene composition containing nucleating agent, modified polypropylene and preparation method thereof | |
| CN104098853B (en) | A kind of wear-resisting PVC water-feeding pipes and preparation method thereof | |
| CN107266881A (en) | It is a kind of to promote seed grain, use its high rigidity polymer blend and preparation method thereof | |
| CN105086121A (en) | Production method for PVC-U drainage pipe | |
| JP2019049001A (en) | Propylene resin composition and stretched container made from same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |