CN112029202A - High-impact random copolymerization polypropylene pipe and preparation method thereof - Google Patents
High-impact random copolymerization polypropylene pipe and preparation method thereof Download PDFInfo
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- CN112029202A CN112029202A CN202010961608.6A CN202010961608A CN112029202A CN 112029202 A CN112029202 A CN 112029202A CN 202010961608 A CN202010961608 A CN 202010961608A CN 112029202 A CN112029202 A CN 112029202A
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- polypropylene
- pipe
- copolymer polypropylene
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 80
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 80
- -1 polypropylene Polymers 0.000 title claims abstract description 78
- 238000007334 copolymerization reaction Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920005604 random copolymer Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 22
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 22
- 229920001400 block copolymer Polymers 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000012661 block copolymerization Methods 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 239000002480 mineral oil Substances 0.000 claims description 10
- 235000010446 mineral oil Nutrition 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 229920005630 polypropylene random copolymer Polymers 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 230000006353 environmental stress Effects 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 231100000252 nontoxic Toxicity 0.000 abstract description 3
- 230000003000 nontoxic effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 7
- 241000218378 Magnolia Species 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-impact random copolymerization polypropylene pipe and a preparation method thereof, wherein the pipe is prepared by mixing, extruding and granulating raw materials, and the raw materials comprise the following components in parts by weight: 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin and 5-8 parts of linear low-density polyethylene. According to the invention, the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene are combined together under the action of the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene, so that the acting force among all the components is effectively improved, and the compatibility among all the components is well improved, thereby enhancing the impact resistance of the pipe; by adding linear low-density polyethylene, the pipe has good performances of environmental stress crack resistance, impact strength and tear strength; meanwhile, the modified bonding resin has good processability, the product is nontoxic and harmless, meets the environmental protection requirement, and has excellent mechanical property and transparency, safety and sanitation.
Description
Technical Field
The invention relates to the field of pipe production, in particular to a high-impact random copolymerization polypropylene pipe and a preparation method thereof.
Background
The random copolymerization polypropylene (PPR) has the characteristics of small density, rich source of raw material propylene, low price, relatively simple synthesis process, good product comprehensive performance and wide application. However, the toughness is poor, and the alloy is easily broken at low temperature, has poor heat resistance, large shrinkage deformation, poor creep resistance and other defects, and is limited in application. They can maintain moderate impact strength when the temperature is reduced to 32 ℃, and the low-temperature brittleness is obvious when the temperature is reduced to 0 ℃, so the application of the high-temperature-resistant low-brittleness rubber material in the building material industry is limited.
In order to expand the application field of the random copolymerization polypropylene, domestic and foreign researches disclose more methods for modifying and toughening the random copolymerization polypropylene, such as modes of adding ethylene propylene rubber, styrene butadiene rubber and other thermoplastic elastomers. Although the elastomers have good low-temperature toughening effect on the random copolymer polypropylene, the rigidity of the random copolymer polypropylene is obviously reduced due to the lower rigidity and modulus of the elastomers, and the original advantages of the random copolymer polypropylene are greatly influenced.
Disclosure of Invention
The invention aims to provide a high-hole punching random copolymerization polypropylene pipe and a preparation method thereof, so as to improve the impact resistance of a PVC pipe.
In order to achieve the purpose, the invention adopts the following technical scheme: the high-impact random copolymer polypropylene pipe is prepared by mixing, extruding and granulating raw materials, wherein the raw materials comprise the following components in parts by weight: 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin and 5-8 parts of linear low-density polyethylene.
In a preferred embodiment of the present invention, the random copolymer polypropylene is 85 parts, the block copolymer polypropylene is 12.5 parts, the modified binder resin is 6 parts, and the linear low density polyethylene is 6.5 parts.
As a preferred mode of the present invention, the random copolymerized polypropylene is composed of 1 to 7% of ethylene molecules and 93 to 99% of propylene molecules.
In a preferred embodiment of the present invention, the block copolymer polypropylene is composed of 7 to 15% of ethylene molecules and 85 to 93% of propylene molecules.
In a preferred mode of the invention, the paint further comprises an auxiliary agent, wherein the auxiliary agent comprises an antioxidant and/or an ultraviolet light resistant agent and/or a lubricant.
As a preferable mode of the invention, the raw materials comprise, by weight, 0.5-1 part of the antioxidant, 0.2-0.5 part of the anti-ultraviolet agent and 0.5-1.0 part of the lubricant.
In a preferred embodiment of the present invention, the antioxidant is 0.75 parts, the anti-uv agent is 0.35 parts, and the lubricant is 0.75 parts.
In a preferred embodiment of the present invention, the lubricant is white mineral oil.
A preparation method of a high impact random copolymerization polypropylene pipe,
a. weighing 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin, 5-8 parts of linear low-density polyethylene, 0.5-1 part of antioxidant, 0.2-0.5 part of anti-ultraviolet agent and 0.5-1.0 part of white mineral oil according to the parts by weight for later use;
b. firstly, sequentially adding the random copolymer polypropylene, the block copolymer polypropylene and the linear low-density polyethylene into a high-speed stirrer, mixing for 5-10min at the speed of 500-800r/min, then sequentially adding the modified bonding resin, the antioxidant, the white mineral oil and the anti-ultraviolet light agent, and mixing for 15-20min at the speed of 1000-1200r/min to obtain a random copolymer polypropylene pipe material;
c. feeding the random copolymerization polypropylene pipe material to a double-screw granulator for extrusion granulation, and then carrying out extrusion molding to obtain the high-impact random copolymerization polypropylene pipe material, wherein the barrel temperature of the extruder is 276-;
d. and cooling the obtained polypropylene random copolymer pipe to 5-10 ℃ for shaping.
By adopting the design scheme, the invention has the beneficial effects that: the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene are combined together under the action of the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene, so that the acting force among all the components is effectively improved, and the compatibility among all the components is well improved, thereby enhancing the shock resistance of the pipe; by adding the linear low-density polyethylene, the pipe is obviously improved in low temperature and stamping strength, and has good performances of environmental stress cracking resistance, impact strength and tearing strength; meanwhile, the modified bonding resin has good processability, the product is nontoxic and harmless, meets the environmental protection requirement, has excellent mechanical property and transparency, and is safe and sanitary.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The high impact random copolymerization polypropylene pipe is prepared by mixing, extruding and granulating raw materials, wherein the raw materials comprise the following components in parts by weight: 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin, 5-8 parts of linear low-density polyethylene, 0.5-1 part of antioxidant, 0.2-0.5 part of anti-ultraviolet agent and 0.5-1.0 part of white mineral oil.
Further, the random copolymerization polypropylene is copolymerized by 1-7% of ethylene molecules and 93-99% of propylene molecules; the block copolymerization polypropylene is formed by copolymerizing 7-15% of ethylene molecules and 85-93% of propylene molecules.
It is to be noted that the random copolymer polypropylene of the present invention may be one or a mixture of commercially available Mega-Korea oiled RP2400 and Koxaxing R200P; the block copolymerization polypropylene can adopt one or a mixture of EPS30R of China petrochemical industry and PB2400 of Korean Dalin; the modified bonding resin can adopt one or mixture of PC-1 and PC-1B of Nanhaibaichen polymer new material Co., Ltd, in the mountain of Buddha; the linear low-density polyethylene is resin which takes ethylene as a main raw material and is polymerized under high pressure or low pressure under the action of a catalyst, has good performances of environmental stress cracking resistance, impact strength resistance and tearing strength resistance, and can adopt one or a mixture of DFDA-7042N of the Chinese oil Mount Liyae petrochemical industry or DFDA-2001 of the Chinese petrochemical Yangzi petrochemical industry; the antioxidant can be one or mixture of antioxidants 1010 and 1076 of BASF; the anti-ultraviolet agent can adopt one or a mixture of UV-531 and UV326 of Nanjing Hualiming chemical industry; the white mineral oil can adopt one or a mixture of 26# and 32# of Hainan Union in the Mognonian petrochemical industry.
A preparation method of a high impact random copolymerization polypropylene pipe comprises the following steps:
a. weighing 85 parts of Dahan oiled RP2400 (random copolymer polypropylene), 12.5 parts of Chinese petrochemical EPS30R (block copolymer polypropylene), 6 parts of PC-1 (modified bonding resin) of Nanhai cypress morning high polymer new material Co., Ltd, 6.5 parts of DFDA-7042N (linear low density polyethylene) of Zhongshimao Kentum, 0.75 parts of antioxidant 1010 (antioxidant) of BASF, 0.35 parts of UV-531 (anti-ultraviolet light agent) of Nanjing Walaming chemical industry and 0.75 parts of 26# (white mineral oil) of Nainan union in Maocai petrochemical industry according to parts by weight for later use;
b. firstly, weighing the Korean oiled RP2400 (random copolymer polypropylene), the Chinese petrochemical EPS30R (block copolymer polypropylene) and the Chinese petroleum Dushan petrochemical DFDA-7042N (linear low density polyethylene) in a high-speed stirrer in sequence according to the weight parts prepared in the step a, adding the weighed materials into the high-speed stirrer, mixing for 6.5min at the speed of 650r/min, then sequentially adding the PC-1 (modified bonding resin) of the New Polymer Material Co., Ltd, the antioxidant 1010 (antioxidant) of Basff BASF, 0.75 part of 26# (white mineral oil) of the Michelia hainanensis Chun of the Michelia florida and the chemical UV-531 (anti-ultraviolet light agent) of Nanjing Hua Ming in the Michelia, prepared in the step a, weighing the prepared in the step a according to the weight parts, and mixing for 17.5min at the speed of 1100r/min to obtain a random copolymer polypropylene pipe;
c. feeding the random copolymerization polypropylene material to a double-screw granulator for extrusion granulation, and then extruding and molding to obtain the high-impact random copolymerization polypropylene pipe, wherein the temperature of a cylinder of the extruder is 280 ℃, and the temperature of a die head is 290 ℃;
d. and cooling the obtained polypropylene random copolymer pipe to 7 ℃ for shaping, then cutting the shaped pipe according to the required requirements, finally packaging the cut product, and putting the product into a warehouse for transportation.
By adopting the design scheme, the invention has the beneficial effects that: the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene are combined together under the action of the random copolymerization polypropylene, the block copolymerization polypropylene, the modified bonding resin and the linear low-density polyethylene, so that the acting force among all the components is effectively improved, and the compatibility among all the components is well improved, thereby enhancing the shock resistance of the pipe; by adding the linear low-density polyethylene, the pipe is obviously improved in low temperature and stamping strength, and has good performances of environmental stress cracking resistance, impact strength and tearing strength; meanwhile, the modified bonding resin has good processability, the product is nontoxic and harmless, meets the environmental protection requirement, and has excellent mechanical property and transparency, safety and sanitation.
The results of the comparative validation test of the present invention are given in the following table:
as can be seen from the table above, compared with the common PPR pipe, the high impact random copolymerization polypropylene pipe prepared by the invention has improved tensile strength, elongation at break and impact resistance, conforms to QB/T2480 index, and can be widely applied to pipeline pipes required in buildings.
The above embodiments are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (9)
1. A high impact random copolymerization polypropylene pipe is characterized in that: the material is prepared by mixing, extruding and granulating raw materials, wherein the raw materials comprise the following components in parts by weight: 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin and 5-8 parts of linear low-density polyethylene.
2. A high impact random copolymer polypropylene pipe as claimed in claim 1, wherein: 85 parts of random copolymer polypropylene, 12.5 parts of block copolymer polypropylene, 6 parts of modified bonding resin and 6.5 parts of linear low-density polyethylene.
3. A high impact random copolymer polypropylene pipe as claimed in claim 1, wherein: the random copolymerized polypropylene is composed of 1-7% of ethylene molecules and 93-99% of propylene molecules.
4. A high impact random copolymer polypropylene pipe as claimed in claim 1, wherein: the block copolymerization polypropylene consists of 7-15% of ethylene molecules and 85-93% of propylene molecules.
5. A high impact random copolymer polypropylene pipe as claimed in claim 1, wherein: the paint also comprises an auxiliary agent, wherein the auxiliary agent comprises an antioxidant and/or an anti-ultraviolet agent and/or a lubricant.
6. A high impact random copolymer polypropylene pipe as claimed in claim 5, wherein: the raw materials comprise, by weight, 0.5-1 part of the antioxidant, 0.2-0.5 part of the anti-ultraviolet agent and 0.5-1.0 part of the lubricant.
7. A high impact random copolymer polypropylene pipe as claimed in claim 6, wherein: 0.75 part of antioxidant, 0.35 part of anti-ultraviolet agent and 0.75 part of lubricant.
8. A high impact random copolymer polypropylene pipe as claimed in claim 6, wherein: the lubricant is white mineral oil.
9. A preparation method of a high impact random copolymerization polypropylene pipe is characterized by comprising the following steps:
a. weighing 80-90 parts of random copolymer polypropylene, 10-15 parts of block copolymer polypropylene, 5-7 parts of modified bonding resin, 5-8 parts of linear low-density polyethylene, 0.5-1 part of antioxidant, 0.2-0.5 part of anti-ultraviolet agent and 0.5-1.0 part of white mineral oil according to the parts by weight for later use;
b. firstly, sequentially adding the random copolymer polypropylene, the block copolymer polypropylene and the linear low-density polyethylene into a high-speed stirrer, mixing for 5-10min at the speed of 500-800r/min, then sequentially adding the modified bonding resin, the antioxidant, the white mineral oil and the anti-ultraviolet light agent, and mixing for 15-20min at the speed of 1000-1200r/min to obtain a random copolymer polypropylene pipe material;
c. feeding the random copolymerization polypropylene pipe material to a double-screw granulator for extrusion granulation, and then carrying out extrusion molding to obtain the high-impact random copolymerization polypropylene pipe material, wherein the barrel temperature of the extruder is 276-;
d. and cooling the obtained polypropylene random copolymer pipe to 5-10 ℃ for shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961608.6A CN112029202A (en) | 2020-09-14 | 2020-09-14 | High-impact random copolymerization polypropylene pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961608.6A CN112029202A (en) | 2020-09-14 | 2020-09-14 | High-impact random copolymerization polypropylene pipe and preparation method thereof |
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| CN112029202A true CN112029202A (en) | 2020-12-04 |
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| CN202010961608.6A Pending CN112029202A (en) | 2020-09-14 | 2020-09-14 | High-impact random copolymerization polypropylene pipe and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360686A (en) * | 2013-07-25 | 2013-10-23 | 杭州鸿雁管道系统科技有限公司 | Low-temperature impact resistance PP-R tubing and preparation method thereof |
| CN110577717A (en) * | 2019-08-30 | 2019-12-17 | 东莞毅工工程塑料有限公司 | scratch-resistant flame-retardant PP (polypropylene) modified material and preparation method thereof |
| CN110922680A (en) * | 2019-11-15 | 2020-03-27 | 江苏东方电缆材料有限公司 | Basalt fiber reinforced and toughened polypropylene-based composite material and preparation method thereof |
-
2020
- 2020-09-14 CN CN202010961608.6A patent/CN112029202A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360686A (en) * | 2013-07-25 | 2013-10-23 | 杭州鸿雁管道系统科技有限公司 | Low-temperature impact resistance PP-R tubing and preparation method thereof |
| CN110577717A (en) * | 2019-08-30 | 2019-12-17 | 东莞毅工工程塑料有限公司 | scratch-resistant flame-retardant PP (polypropylene) modified material and preparation method thereof |
| CN110922680A (en) * | 2019-11-15 | 2020-03-27 | 江苏东方电缆材料有限公司 | Basalt fiber reinforced and toughened polypropylene-based composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 秦江雷等: "共聚聚丙烯(cPP)/线型低密度聚乙烯(LLDPE)共混体系的流变与结晶形为", 《塑料工业》 * |
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Application publication date: 20201204 |