CN107383533A - A kind of water supply line material of cracking resistance and preparation method thereof - Google Patents
A kind of water supply line material of cracking resistance and preparation method thereof Download PDFInfo
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- CN107383533A CN107383533A CN201710650837.4A CN201710650837A CN107383533A CN 107383533 A CN107383533 A CN 107383533A CN 201710650837 A CN201710650837 A CN 201710650837A CN 107383533 A CN107383533 A CN 107383533A
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- supply line
- water supply
- line material
- cracking resistance
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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
- 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
- C08L23/06—Polyethene
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of water supply line material of cracking resistance, it is characterised in that includes following raw material according to parts by weight：40 ~ 70 parts of polyvinyl resin, 10 ~ 20 parts of ABS resin, 5 ~ 15 parts of modified expanded perlite, 3 ~ 9 parts of dibutyl tin laurate, 3 ~ 10 parts of clay, 3 ~ 6 parts of titanium dioxide, 5 ~ 13 parts of ethylene butene styrene acrylonitrile copolymer, 1 ~ 3 part of hydroxyethyl methacrylate, 7 ~ 12 parts of polyacrylate, 1 ~ 5 part of phthalic acid ester, 2 ~ 14 parts of γ aminopropyl triethoxysilanes, 1.5 ~ 3.5 parts of plasticizer, 0.5 ~ 3.5 part of fire retardant, 1 ~ 7 part of accelerator.The intensity for the water supply line material that the present invention prepares is remarkably reinforced, and anti-antipriming pipe ftractures in the winter of severe cold because water pipe freezes.
Description
Technical field
The invention belongs to pipeline material field, and in particular to water supply line material of a kind of cracking resistance and preparation method thereof.
Background technology
Pipeline be with pipe, pipe connector and valve etc. be connected into be used for convey gas, liquid or with solid particle
Fluid device.Generally, fluid flows to low pressure after the supercharging such as air blower, compressor, pump and boiler at the high pressure of pipeline
Place, pressure or the gravity conveying of fluid itself can also be used.Having many uses for pipeline is general, be used primarily in feedwater, draining, heat supply,
Give gas, in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
In the winter of cold, temperature can be down to zero following, especially northern temperature, or even all in subzero ten several years.
The situation of water pipe cracking occurs in some rural areas or the cell of property facility aging, winter, it is therefore desirable to a kind of cracking resistance
Water supply line material.
The content of the invention
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of water supply line material of cracking resistance and its
Preparation method.
To achieve the above object, the technical scheme is that：The water supply line material of a kind of cracking resistance, according to parts by weight
Including following raw material：40 ~ 70 parts of polyvinyl resin, 10 ~ 20 parts of ABS resin, 5 ~ 15 parts of modified expanded perlite, tin dilaurate two
3 ~ 9 parts of butyl tin, 3 ~ 10 parts of clay, 3 ~ 6 parts of titanium dioxide, 5 ~ 13 parts of EPSAN, methyl-prop
1 ~ 3 part of olefin(e) acid hydroxyl ethyl ester, 7 ~ 12 parts of polyacrylate, 1 ~ 5 part of phthalic acid ester, gamma-aminopropyl-triethoxy-silane 2 ~ 14
Part, 1.5 ~ 3.5 parts of plasticizer, 0.5 ~ 3.5 part of fire retardant, 1 ~ 7 part of accelerator.
Further, following raw material is included according to parts by weight：40 parts of polyvinyl resin, 10 parts of ABS resin, modified expanded treasure
5 parts of pearl rock, 3 parts of dibutyl tin laurate, 3 parts of clay, 3 parts of titanium dioxide, EPSAN 5
Part, 1 part of hydroxyethyl methacrylate, 7 parts of polyacrylate, 1 part of phthalic acid ester, gamma-aminopropyl-triethoxy-silane 2
Part, 1.5 parts of plasticizer, 0.5 part of fire retardant, 1 part of accelerator.
Further, plasticizer is triethyl citrate, ATBC, tributyl 2-acetylcitrate, citric acid three
One or two or more kinds of mixing of monooctyl ester, ATOC, citric acid tri-n-hexyl ester, ATHC
Thing.
Further, the modified expanded perlite is made by following methods：Expanded perlite is added to sodium soap
In solution, be passed through pH adjusting agent regulation solution pH be 5 ~ 6, controlling reaction temperature be 100 ~ 110 DEG C, the reaction time be 25 ~
55min, filtering, obtained solid matter is dried, obtains the modified expanded perlite.
Further, one or more of the fire retardant in aluminium hydroxide, magnesium hydroxide and antimony oxide.
Further, the accelerator is maleic anhydride graft-promoting additive.
A kind of preparation method of cracking resistance water supply line material, comprises the following steps：
Step 1：All components are mixed, it is scattered 20 ~ 50 minutes with 1000 ~ 1500rpm of rotating speed in high speed dispersor；
Step 2：Feed the mixture into two-roll mill, preceding roll temperature：170 ~ 190 DEG C, rear roll temperature：160 ~ 180 DEG C, preliminary roller
It is 1 with back roller rotating ratio:1.5；
Step 3：Mill thing is added into progress extrusion molding in double screw extruder and produces water supply line material.
Further, the double screw extruder in the step 3 is divided into four humidity provinces, the temperature difference of each humidity province
For：One area's temperature：90 ~ 110 DEG C, two area's temperature：140 ~ 160 DEG C, three area's temperature：160 ~ 180 DEG C, four area's temperature：170~190
℃。
The beneficial effects of the present invention are：The present invention provides a kind of water supply line material of cracking resistance and preparation method thereof,
Polyvinyl resin, ABS resin, modified expanded perlite, dibutyl tin laurate, polyethylene tree are with the addition of in pipeline material
It is mutually coordinated between fat, ABS resin, modified expanded perlite, dibutyl tin laurate, the water supply line material prepared
Intensity is remarkably reinforced, and anti-antipriming pipe ftractures in the winter of severe cold because water pipe freezes.
The accelerator used in the present invention can promote for maleic anhydride graft-promoting additive by intermolecular bonding force
Incompatible two kinds of polymer is combined together, and then the purpose of stabilized blends, has given full play to the work of each raw material
With.
The water supply line material of cracking resistance in the present invention, it is also added into aluminium hydroxide, magnesium hydroxide or three oxidations two
Antimony can improve pipeline flame retardant effect as fire retardant.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and it is unlimited
The fixed present invention.
Embodiment 1
A kind of water supply line material of cracking resistance, include following raw material according to parts by weight：40 parts of polyvinyl resin, ABS resin 10
Part, 5 parts of modified expanded perlite, 3 parts of dibutyl tin laurate, 3 parts of clay, 3 parts of titanium dioxide, ethylene-propylene, Styrene-
5 parts of acrylonitrile copolymer, 1 part of hydroxyethyl methacrylate, 7 parts of polyacrylate, 1 part of phthalic acid ester, γ-aminopropyl three
2 parts of Ethoxysilane, 1.5 parts of plasticizer, 0.5 part of fire retardant, 1 part of accelerator.
Plasticizer is triethyl citrate, ATBC, tributyl 2-acetylcitrate, trioctyl lemon acid, acetyl
Trioctyl lemon acid, citric acid tri-n-hexyl ester, one or two or more kinds of mixtures of ATHC.
The modified expanded perlite is made by following methods：Expanded perlite is added in sodium soap solution, led to
The pH for entering pH adjusting agent regulation solution is 5, and controlling reaction temperature is 100 DEG C, reaction time 25min, filtering, is consolidated what is obtained
Body material is dried, and obtains the modified expanded perlite.
One or more of the fire retardant in aluminium hydroxide, magnesium hydroxide and antimony oxide.
The accelerator is maleic anhydride graft-promoting additive.
A kind of preparation method of cracking resistance water supply line material, comprises the following steps：
Step 1：All components are mixed, it is scattered 20 minutes with rotating speed 1000rpm in high speed dispersor；
Step 2：Feed the mixture into two-roll mill, preceding roll temperature：170 DEG C, rear roll temperature：160 DEG C, preliminary roller turns with back roller
Speed is than being 1:1.5；
Step 3：Mill thing is added into progress extrusion molding in double screw extruder and produces water supply line material.
Double screw extruder in the step 3 is divided into four humidity provinces, and the temperature of each humidity province is respectively：One area's temperature
Degree：90 DEG C, two area's temperature：140 DEG C, three area's temperature：160 DEG C, four area's temperature：170℃.
Embodiment 2
A kind of water supply line material of cracking resistance, include following raw material according to parts by weight：50 parts of polyvinyl resin, ABS resin 15
Part, 10 parts of modified expanded perlite, 6 parts of dibutyl tin laurate, 7 parts of clay, 5 parts of titanium dioxide, ethylene-propylene, Styrene-
8 parts of acrylonitrile copolymer, 2 parts of hydroxyethyl methacrylate, 10 parts of polyacrylate, 3 parts of phthalic acid ester, γ-aminopropyl
10 parts of triethoxysilane, 2.5 parts of plasticizer, 2.5 parts of fire retardant, 4 parts of accelerator.
Plasticizer is triethyl citrate, ATBC, tributyl 2-acetylcitrate, trioctyl lemon acid, acetyl
Trioctyl lemon acid, citric acid tri-n-hexyl ester, one or two or more kinds of mixtures of ATHC.
The modified expanded perlite is made by following methods：Expanded perlite is added in sodium soap solution, led to
The pH for entering pH adjusting agent regulation solution is 5, and controlling reaction temperature is 105 DEG C, reaction time 45min, filtering, is consolidated what is obtained
Body material is dried, and obtains the modified expanded perlite.
One or more of the fire retardant in aluminium hydroxide, magnesium hydroxide and antimony oxide.
The accelerator is maleic anhydride graft-promoting additive.
A kind of preparation method of cracking resistance water supply line material, comprises the following steps：
Step 1：All components are mixed, it is scattered 30 minutes with rotating speed 1200rpm in high speed dispersor；
Step 2：Feed the mixture into two-roll mill, preceding roll temperature：180 DEG C, rear roll temperature：170 DEG C, preliminary roller turns with back roller
Speed is than being 1:1.5；
Step 3：Mill thing is added into progress extrusion molding in double screw extruder and produces water supply line material.
Double screw extruder in the step 3 is divided into four humidity provinces, and the temperature of each humidity province is respectively：One area's temperature
Degree：100 DEG C, two area's temperature：150 DEG C, three area's temperature：170 DEG C, four area's temperature：180℃.
Embodiment 3
A kind of water supply line material of cracking resistance, include following raw material according to parts by weight：70 parts of polyvinyl resin, ABS resin 20
Part, 15 parts of modified expanded perlite, 9 parts of dibutyl tin laurate, 10 parts of clay, 6 parts of titanium dioxide, ethylene-propylene-benzene second
13 parts of alkene-acrylonitrile copolymer, 3 parts of hydroxyethyl methacrylate, 12 parts of polyacrylate, 5 parts of phthalic acid ester, γ-ammonia
14 parts of propyl-triethoxysilicane, 3.5 parts of plasticizer, 3.5 parts of fire retardant, 7 parts of accelerator.
Plasticizer is triethyl citrate, ATBC, tributyl 2-acetylcitrate, trioctyl lemon acid, acetyl
Trioctyl lemon acid, citric acid tri-n-hexyl ester, one or two or more kinds of mixtures of ATHC.
The modified expanded perlite is made by following methods：Expanded perlite is added in sodium soap solution, led to
The pH for entering pH adjusting agent regulation solution is 6, and controlling reaction temperature is 110 DEG C, reaction time 55min, filtering, is consolidated what is obtained
Body material is dried, and obtains the modified expanded perlite.
One or more of the fire retardant in aluminium hydroxide, magnesium hydroxide and antimony oxide.
The accelerator is maleic anhydride graft-promoting additive.
A kind of preparation method of cracking resistance water supply line material, comprises the following steps：
Step 1：All components are mixed, it is scattered 50 minutes with rotating speed 1500rpm in high speed dispersor；
Step 2：Feed the mixture into two-roll mill, preceding roll temperature：190 DEG C, rear roll temperature：180 DEG C, preliminary roller turns with back roller
Speed is than being 1:1.5；
Step 3：Mill thing is added into progress extrusion molding in double screw extruder and produces water supply line material.
Double screw extruder in the step 3 is divided into four humidity provinces, and the temperature of each humidity province is respectively：One area's temperature
Degree：110 DEG C, two area's temperature：160 DEG C, three area's temperature：180 DEG C, four area's temperature：190℃.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (8)
1. the water supply line material of a kind of cracking resistance, it is characterised in that include following raw material according to parts by weight：Polyvinyl resin 40
~ 70 parts, 10 ~ 20 parts of ABS resin, 5 ~ 15 parts of modified expanded perlite, 3 ~ 9 parts of dibutyl tin laurate, 3 ~ 10 parts of clay, titanium
3 ~ 6 parts of white powder, 5 ~ 13 parts of EPSAN, 1 ~ 3 part of hydroxyethyl methacrylate, polyacrylic acid
7 ~ 12 parts of ester, 1 ~ 5 part of phthalic acid ester, 2 ~ 14 parts of gamma-aminopropyl-triethoxy-silane, 1.5 ~ 3.5 parts of plasticizer, fire retardant
0.5 ~ 3.5 part, 1 ~ 7 part of accelerator.
A kind of 2. water supply line material of cracking resistance according to claim 1, it is characterised in that according to parts by weight include with
Lower raw material：40 parts of polyvinyl resin, 10 parts of ABS resin, 5 parts of modified expanded perlite, 3 parts of dibutyl tin laurate, clay 3
Part, 3 parts of titanium dioxide, 5 parts of EPSAN, 1 part of hydroxyethyl methacrylate, polyacrylate 7
Part, 1 part of phthalic acid ester, 2 parts of gamma-aminopropyl-triethoxy-silane, 1.5 parts of plasticizer, 0.5 part of fire retardant, accelerator 1
Part.
3. the water supply line material of a kind of cracking resistance according to claim 1, it is characterised in that plasticizer is citric acid three
Ethyl ester, ATBC, tributyl 2-acetylcitrate, trioctyl lemon acid, ATOC, citric acid three just oneself
One or two or more kinds of mixtures of ester, ATHC.
A kind of 4. water supply line material of cracking resistance according to claim 1, it is characterised in that the modified expanded pearl
Rock is made by following methods：Expanded perlite is added in sodium soap solution, the pH for being passed through pH adjusting agent regulation solution is 5
~ 6, controlling reaction temperature is 100 ~ 110 DEG C, and the reaction time is 25 ~ 55min, filtering, obtained solid matter is dried, obtained
The modified expanded perlite.
5. the water supply line material of a kind of cracking resistance according to claim 1, it is characterised in that the fire retardant is selected from hydrogen
One or more in aluminum oxide, magnesium hydroxide and antimony oxide.
6. the water supply line material of a kind of cracking resistance according to claim 1, it is characterised in that the accelerator is Malaysia
Acid anhydrides graft-promoting additive.
A kind of 7. method for the water supply line material for preparing cracking resistance any one of claim 1 to 6, it is characterised in that
Comprise the following steps：
Step 1：All components are mixed, it is scattered 20 ~ 50 minutes with 1000 ~ 1500rpm of rotating speed in high speed dispersor；
Step 2：Feed the mixture into two-roll mill, preceding roll temperature：170 ~ 190 DEG C, rear roll temperature：160 ~ 180 DEG C, preliminary roller
It is 1 with back roller rotating ratio:1.5；
Step 3：Mill thing is added into progress extrusion molding in double screw extruder and produces water supply line material.
A kind of 8. method of water supply line material for preparing cracking resistance according to claim 7, it is characterised in that the step
Double screw extruder in rapid 3 is divided into four humidity provinces, and the temperature of each humidity province is respectively：One area's temperature：90 ~ 110 DEG C, two
Area's temperature：140 ~ 160 DEG C, three area's temperature：160 ~ 180 DEG C, four area's temperature：170~190℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650837.4A CN107383533A (en) | 2017-08-02 | 2017-08-02 | A kind of water supply line material of cracking resistance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650837.4A CN107383533A (en) | 2017-08-02 | 2017-08-02 | A kind of water supply line material of cracking resistance and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107383533A true CN107383533A (en) | 2017-11-24 |
Family
ID=60343337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710650837.4A Withdrawn CN107383533A (en) | 2017-08-02 | 2017-08-02 | A kind of water supply line material of cracking resistance and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107383533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034109A (en) * | 2017-12-12 | 2018-05-15 | 吴江市强塑阀门管件厂 | A kind of preparation method and applications of impact resistance plastics valve material |
| CN109210284A (en) * | 2018-09-28 | 2019-01-15 | 安徽环科泵阀有限公司 | A kind of cracking resistance pump valve pipeline and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311978A (en) * | 2014-08-28 | 2015-01-28 | 王晓伟 | Linear low-density polyethylene pipe material |
| CN104744753A (en) * | 2013-12-31 | 2015-07-01 | 上海凯波特种电缆料厂有限公司 | Anti-cracking thermoplastic low smoke zero halogen flame retardant polyolefin material and preparation method thereof |
| CN105802034A (en) * | 2016-04-06 | 2016-07-27 | 苏州甫众塑胶有限公司 | Novel thermal-insulated pipeline material and preparation method thereof |
| CN105936703A (en) * | 2016-06-06 | 2016-09-14 | 浙江天雁控股有限公司 | Environment-friendly and lead-free PVC water supply pipeline material |
-
2017
- 2017-08-02 CN CN201710650837.4A patent/CN107383533A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104744753A (en) * | 2013-12-31 | 2015-07-01 | 上海凯波特种电缆料厂有限公司 | Anti-cracking thermoplastic low smoke zero halogen flame retardant polyolefin material and preparation method thereof |
| CN104311978A (en) * | 2014-08-28 | 2015-01-28 | 王晓伟 | Linear low-density polyethylene pipe material |
| CN105802034A (en) * | 2016-04-06 | 2016-07-27 | 苏州甫众塑胶有限公司 | Novel thermal-insulated pipeline material and preparation method thereof |
| CN105936703A (en) * | 2016-06-06 | 2016-09-14 | 浙江天雁控股有限公司 | Environment-friendly and lead-free PVC water supply pipeline material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034109A (en) * | 2017-12-12 | 2018-05-15 | 吴江市强塑阀门管件厂 | A kind of preparation method and applications of impact resistance plastics valve material |
| CN109210284A (en) * | 2018-09-28 | 2019-01-15 | 安徽环科泵阀有限公司 | A kind of cracking resistance pump valve pipeline and preparation method thereof |
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Application publication date: 20171124 |