CN109135096A - A kind of wear-resisting PVC solid wall pipe and preparation method thereof - Google Patents
A kind of wear-resisting PVC solid wall pipe and preparation method thereof Download PDFInfo
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- CN109135096A CN109135096A CN201810644502.6A CN201810644502A CN109135096A CN 109135096 A CN109135096 A CN 109135096A CN 201810644502 A CN201810644502 A CN 201810644502A CN 109135096 A CN109135096 A CN 109135096A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/011—Nanostructured additives
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- 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
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of wear-resisting PVC solid wall pipes, it is characterised in that: it is formed and content are as follows: 100 mass parts of polyvinyl chloride, chliorinated polyvinyl chloride 15-30 mass parts, hydroxypropyl guar gum 8-17 mass parts, aromatic copolycarbonate 10-20 mass parts, fumed silica 5-15 mass parts, sodium aluminosilicate 5-15 mass parts, heat stabilizer 1-5 mass parts, modifier 0.5-1.5 mass parts, impact modifying agent 5-12 mass parts, lubricant 0.2-1 mass parts and ultraviolet absorbing agent 0.5-2 mass parts.PVC solid wall pipe provided by the invention contains fumed silica and sodium aluminosilicate.Wherein fumed silica partial size very little has more porous and very high specific surface area, can increase the interface compatibility with PVC molecule, to keep material overall structure more stable, improve the wearability of PVC material.Sodium aluminosilicate is the main component of jadeite, and hardness is very high, is distributed in PVC material and can also be improved its wearability, while the substance can take the clast of jade processing, thus turning waste into treasure.
Description
Technical field
The present invention relates to PVC solid wall pipe fields more particularly to a kind of wear-resisting PVC solid wall pipe and preparation method thereof.
Background technique
PVC(Polyvinylchlorid) pipe is a kind of tubing as the main component with polyvinyl chloride.PVC pipe exists at present
There is extremely wide purposes in the fields such as water supply and sewage, electric power cable laying.It has light weight, intensity high, insulation, it is corrosion-resistant,
The advantages that high comprehensive performance, extensive cheap and raw material sources, but polyvinyl chloride wearing-resistant is poor, and abrasion are to cause material
The major reason of destruction affects the application range of PVC solid wall pipe so as to shorten the service life of PVC solid wall pipe.Therefore it mentions
For a kind of wear-resisting, the PVC solid wall pipe of high performance-price ratio is problem to be solved by this invention.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of wear-resisting, PVC solid wall pipe of high performance-price ratio.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows: provide a kind of wear-resisting PVC solid wall pipe, feature
Be: it is formed and content are as follows: 100 mass parts of polyvinyl chloride, chliorinated polyvinyl chloride 15-30 mass parts, hydroxypropyl guar gum 8-
17 mass parts, aromatic copolycarbonate 10-20 mass parts, fumed silica 5-15 mass parts, sodium aluminosilicate 5-15 mass parts,
Heat stabilizer 1-5 mass parts, modifier 0.5-1.5 mass parts, impact modifying agent 5-12 mass parts, lubricant 0.2-1 matter
Measure part and ultraviolet absorbing agent 0.5-2 mass parts.
As a preferred embodiment, the partial size of the fumed silica is 5-50nm.
As a kind of more preferable scheme, the heat stabilizer is one kind of calcium stearate or organic tin stabilizer；It is described to add
Work modifying agent is polyacrylate modifier.
As a kind of more preferable scheme, the impact modifying agent is haloflex or methyl methacrylate-butadiene-
Styrene copolymer.
As a kind of more preferable scheme, the lubricant is polyethylene wax；The ultraviolet absorbing agent is benzotriazole, two
One kind of Benzophenone or salicylate.As a preferred embodiment,.
The present invention also provides the preparation methods of above-mentioned wear-resisting PVC solid wall pipe, which comprises the following steps:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material；
(2) by mixed raw material heat drying, drying temperature is 110-130 DEG C；
(3) mixed raw material is by melting extrusion equipment after drying, and melting extrusion equipment has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 180-190 DEG C, at 170-180 DEG C, exhaust section temperature is controlled at 172-182 DEG C for compression section temperature control,
Homogenizing zone temperature is controlled at 165-175 DEG C；Final mixed raw material squeezes out to obtain high temperature pvc pipe blank, and extrusion temperature control exists
185-195℃；
(4) high temperature pvc pipe blank is shifted using dragger, it is made to cool down by water cooling equipment；
(5) it is formed, cutting obtains pvc pipe finished product.
As a preferred embodiment, melting extrusion equipment is double screw extruder in the step (3).
As a kind of more preferable scheme, screw speed control is in 20-40r/min in the step (3).
As a kind of more preferable scheme, the control of double screw extruder head pressure is in 15-40MPa in the step (3).
As a preferred embodiment, water cooling equipment cooling water temperature is controlled at 30-70 DEG C in the step (4).
The beneficial technical effect of the present invention lies in: provide a kind of wear-resisting, PVC solid wall pipe of high performance-price ratio.The present invention
The PVC solid wall pipe of offer contains fumed silica and sodium aluminosilicate.Wherein fumed silica partial size very little, only 5-
50nm can form stable aerosol in air.The substance have more porous and very high specific surface area, can increase and
The interface compatibility of PVC molecule improves the wearability of PVC material to keep material overall structure more stable.Sodium aluminosilicate
It is the main component of jadeite, hardness is very high, is distributed in PVC material and its wearability can be improved, while the substance can take
The clast of jade processing also reduces cost thus turning waste into treasure.PVC solid wall pipe also contains hydroxypropyl guar gum simultaneously, the object
Matter is hydrophilic product of the guar gum after hydroxypropyl modified, has outstanding hydrophily and network molecular structure, can be well
Moisture absorption and moisture-keeping function are played, to add somewhat to the humidity of PVC solid wall pipe periphery subenvironment, reduces temperature,
The temperature tolerance of PVC solid wall pipe is improved, and cheap, cost performance is high.Therefore PVC solid wall pipe provided by the present invention has well
Wearability, temperature tolerance and cost performance with higher.
Specific embodiment
The invention will be further described combined with specific embodiments below.Following embodiment is only used for clearly illustrating
Technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
The present invention provides a kind of wear-resisting PVC solid wall pipe, composition and content are as follows:
100 mass parts of polyvinyl chloride, 30 mass parts of chliorinated polyvinyl chloride, 17 mass parts of hydroxypropyl guar gum, aromatic polycarbonate
20 mass parts of ester, 5 mass parts of fumed silica, 5 mass parts of sodium aluminosilicate, 1 mass parts of calcium stearate, polyacrylate add
1.5 mass parts of work modifying agent, 2 mass parts of 12 mass parts of haloflex, 1 mass parts of polyethylene wax and benzophenone.
Wherein the partial size of fumed silica is 5nm.
Wear-resisting PVC solid wall pipe is prepared as follows:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material.
(2) by mixed raw material heat drying, drying temperature is 110 DEG C.
(3) material passes through double screw extruder after drying.Double screw extruder has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 180 DEG C, and compression section temperature control is at 170 DEG C, and the control of exhaust section temperature is at 172 DEG C, homogenizing zone temperature control
System is at 165 DEG C.Final material obtains high temperature pvc pipe blank by head extrusion, and extrusion temperature control is at 185 DEG C, twin-screw extrusion
Machine head pressure is controlled in 15MPa.Whole process screw speed control simultaneously is in 20r/min.
(4) high temperature pvc pipe blank is shifted using dragger, so that it is cooled down by water cooling equipment, cooling water temperature control
System is at 30 DEG C.
(5) it is formed, cutting obtains pvc pipe finished product.
Using the method for co-extrusion will be added to prepare wear-resisting PVC solid wall pipe in attrition resistant materials, keeps conjugation between material more preferable, imitate
Fruit plays more preferable also more longlasting.
Embodiment 2
The present invention provides a kind of wear-resisting PVC solid wall pipe, composition and content are as follows:
100 mass parts of polyvinyl chloride, 27 mass parts of chliorinated polyvinyl chloride, 15 mass parts of hydroxypropyl guar gum, aromatic polycarbonate
18 mass parts of ester, 8 mass parts of fumed silica, 9 mass parts of sodium aluminosilicate, 2 mass parts of organic tin stabilizer, polyacrylate
1.5 mass parts of class modifier, 1.5 mass of 10 mass parts of haloflex, 0.8 mass parts of polyethylene wax and benzotriazole
Part.
Wherein the partial size of fumed silica is 15nm.
Wear-resisting PVC solid wall pipe is prepared as follows:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material.
(2) by mixed raw material heat drying, drying temperature is 115 DEG C.
(3) material passes through double screw extruder after drying.Double screw extruder has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 182 DEG C, and compression section temperature control is at 170 DEG C, and the control of exhaust section temperature is at 172 DEG C, homogenizing zone temperature control
System is at 167 DEG C.Final material obtains high temperature pvc pipe blank by head extrusion, and extrusion temperature control is at 187 DEG C, twin-screw extrusion
Machine head pressure is controlled in 20MPa.Whole process screw speed control simultaneously is in 25r/min.
(4) high temperature pvc pipe blank is shifted using dragger, so that it is cooled down by water cooling equipment, cooling water temperature control
System is at 40 DEG C.
(5) it is formed, cutting obtains pvc pipe finished product.
Embodiment 3
The present invention provides a kind of wear-resisting PVC solid wall pipe, composition and content are as follows:
100 mass parts of polyvinyl chloride, 24 mass parts of chliorinated polyvinyl chloride, 12 mass parts of hydroxypropyl guar gum, aromatic polycarbonate
15 mass parts of ester, 10 mass parts of fumed silica, 11 mass parts of sodium aluminosilicate, 3 mass parts of calcium stearate, polyacrylate
1 mass parts of modifier, 10 mass parts of methyl methacrylate-butadiene-styrene terpolymer, polyethylene wax 0.8
1 mass parts of mass parts and salicylate.
Wherein the partial size of fumed silica is 25nm.
Wear-resisting PVC solid wall pipe is prepared as follows:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material.
(2) by mixed raw material heat drying, drying temperature is 120 DEG C.
(3) material passes through double screw extruder after drying.Double screw extruder has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 185 DEG C, and compression section temperature control is at 175 DEG C, and the control of exhaust section temperature is at 177 DEG C, homogenizing zone temperature control
System is at 170 DEG C.Final material obtains high temperature pvc pipe blank by head extrusion, and extrusion temperature control is at 190 DEG C, twin-screw extrusion
Machine head pressure is controlled in 25MPa.Whole process screw speed control simultaneously is in 30r/min.
(4) high temperature pvc pipe blank is shifted using dragger, so that it is cooled down by water cooling equipment, cooling water temperature control
System is at 50 DEG C.
(5) it is formed, cutting obtains pvc pipe finished product.
Embodiment 4
The present invention provides a kind of wear-resisting PVC solid wall pipe, composition and content are as follows:
100 mass parts of polyvinyl chloride, 20 mass parts of chliorinated polyvinyl chloride, 10 mass parts of hydroxypropyl guar gum, aromatic polycarbonate
12 mass parts of ester, 12 mass parts of fumed silica, 13 mass parts of sodium aluminosilicate, 4 mass parts of organic tin stabilizer, polyacrylic acid
0.5 mass parts of esters modifier, 7 mass parts of methyl methacrylate-butadiene-styrene terpolymer, polyethylene
0.8 mass parts of 0.5 mass parts of wax and benzophenone.
Wherein the partial size of fumed silica is 35nm.
Wear-resisting PVC solid wall pipe is prepared as follows:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material.
(2) by mixed raw material heat drying, drying temperature is 125 DEG C.
(3) material passes through double screw extruder after drying.Double screw extruder has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 187 DEG C, and compression section temperature control is at 178 DEG C, and the control of exhaust section temperature is at 180 DEG C, homogenizing zone temperature control
System is at 170 DEG C.Final material obtains high temperature pvc pipe blank by head extrusion, and extrusion temperature control is at 192 DEG C, twin-screw extrusion
Machine head pressure is controlled in 30MPa.Whole process screw speed control simultaneously is in 35r/min.
(4) high temperature pvc pipe blank is shifted using dragger, so that it is cooled down by water cooling equipment, cooling water temperature control
System is at 60 DEG C.
(5) it is formed, cutting obtains pvc pipe finished product.
Embodiment 5
The present invention provides a kind of wear-resisting PVC solid wall pipe, composition and content are as follows:
100 mass parts of polyvinyl chloride, 15 mass parts of chliorinated polyvinyl chloride, 8 mass parts of hydroxypropyl guar gum, aromatic copolycarbonate
10 mass parts, 15 mass parts of fumed silica, 15 mass parts of sodium aluminosilicate, 5 mass parts of calcium stearate, polyacrylate add
0.5 mass parts of work modifying agent, 0.5 mass parts of 5 mass parts of haloflex, 0.2 mass parts of polyethylene wax and benzotriazole.
Wherein the partial size of fumed silica is 50nm.
Wear-resisting PVC solid wall pipe is prepared as follows:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material.
(2) by mixed raw material heat drying, drying temperature is 130 DEG C.
(3) material passes through double screw extruder after drying.Double screw extruder has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 190 DEG C, and compression section temperature control is at 180 DEG C, and the control of exhaust section temperature is at 182 DEG C, homogenizing zone temperature control
System is at 175 DEG C.Final material obtains high temperature pvc pipe blank by head extrusion, and extrusion temperature control is at 195 DEG C, twin-screw extrusion
Machine head pressure is controlled in 40MPa.Whole process screw speed control simultaneously is in 40r/min.
(4) high temperature pvc pipe blank is shifted using dragger, so that it is cooled down by water cooling equipment, cooling water temperature control
System is at 70 DEG C.
(5) it is formed, cutting obtains pvc pipe finished product.
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
1. a kind of wear-resisting PVC solid wall pipe, it is characterised in that: it is formed and content are as follows: 100 mass parts of polyvinyl chloride, chlorinated polyvinyl chloride
Ethylene 15-30 mass parts, hydroxypropyl guar gum 8-17 mass parts, aromatic copolycarbonate 10-20 mass parts, fumed silica
5-15 mass parts, sodium aluminosilicate 5-15 mass parts, heat stabilizer 1-5 mass parts, modifier 0.5-1.5 mass parts, impact
Modifying agent 5-12 mass parts, lubricant 0.2-1 mass parts and ultraviolet absorbing agent 0.5-2 mass parts.
2. wear-resisting PVC solid wall pipe according to claim 1, it is characterised in that: the partial size of the fumed silica is 5-
50nm。
3. wear-resisting PVC solid wall pipe according to claim 2, it is characterised in that: the heat stabilizer is calcium stearate or has
One kind of machine tin stabilizer；The modifier is polyacrylate modifier.
4. wear-resisting PVC solid wall pipe according to claim 3, it is characterised in that: the impact modifying agent is haloflex
Or methyl methacrylate-butadiene-styrene terpolymer.
5. wear-resisting PVC solid wall pipe according to claim 4, it is characterised in that: the lubricant is polyethylene wax；The purple
Ultraviolet absorbers are benzotriazole, one kind of benzophenone or salicylate.
6. the preparation method of wear-resisting PVC solid wall pipe a method as claimed in any one of claims 1 to 5, which comprises the following steps:
(1) polyvinyl chloride, chliorinated polyvinyl chloride, hydroxypropyl guar gum, aromatic copolycarbonate, fumed silica, aluminium are weighed
Sodium metasilicate, heat stabilizer, modifier, impact modifying agent, lubricant and ultraviolet absorbing agent are placed in container and mix
It is even, obtain mixed raw material；
(2) by mixed raw material heat drying, drying temperature is 110-130 DEG C；
(3) mixed raw material is by melting extrusion equipment after drying, and melting extrusion equipment has screw rod, and is divided into four sections, wherein giving
The control of section temperature is expected at 180-190 DEG C, at 170-180 DEG C, exhaust section temperature is controlled at 172-182 DEG C for compression section temperature control,
Homogenizing zone temperature is controlled at 165-175 DEG C；Final mixed raw material squeezes out to obtain high temperature pvc pipe blank, and extrusion temperature control exists
185-195℃；
(4) high temperature pvc pipe blank is shifted using dragger, it is made to cool down by water cooling equipment；
(5) it is formed, cutting obtains pvc pipe finished product.
7. the preparation method of wear-resisting PVC solid wall pipe according to claim 6, it is characterised in that: melting in the step (3)
Extrusion equipment is double screw extruder.
8. the preparation method of wear-resisting PVC solid wall pipe according to claim 7, it is characterised in that: screw rod in the step (3)
Revolving speed is controlled in 20-40r/min.
9. the preparation method of wear-resisting PVC solid wall pipe according to claim 7, it is characterised in that: double spiral shells in the step (3)
Bar cross-head pressure is controlled in 15-40MPa.
10. the preparation method of wear-resisting PVC solid wall pipe according to claim 6, it is characterised in that: water in the step (4)
Cool equipment cooling water temperature is controlled at 30-70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644502.6A CN109135096A (en) | 2018-06-21 | 2018-06-21 | A kind of wear-resisting PVC solid wall pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644502.6A CN109135096A (en) | 2018-06-21 | 2018-06-21 | A kind of wear-resisting PVC solid wall pipe and preparation method thereof |
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|---|---|
| CN109135096A true CN109135096A (en) | 2019-01-04 |
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|---|---|---|---|
| CN201810644502.6A Pending CN109135096A (en) | 2018-06-21 | 2018-06-21 | A kind of wear-resisting PVC solid wall pipe and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437562A (en) * | 2019-08-20 | 2019-11-12 | 安徽滁州德威新材料有限公司 | A kind of environmental protection Textilene table mat PVC material and preparation method thereof |
| CN115521556A (en) * | 2022-06-27 | 2022-12-27 | 东台市竹林高科技材料有限公司 | Heat-resistant and wear-resistant high-toughness PVC solid-wall pipe |
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| CN104861334A (en) * | 2014-12-29 | 2015-08-26 | 殷培花 | Nanometer silica modified polyvinyl chloride composite material |
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| CN102964714A (en) * | 2011-08-31 | 2013-03-13 | 中国石油化工股份有限公司 | Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method |
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