CN111154200A - High-melt-strength PVC-U water supply pipe and preparation method thereof - Google Patents
High-melt-strength PVC-U water supply pipe and preparation method thereof Download PDFInfo
- Publication number
- CN111154200A CN111154200A CN202010071219.6A CN202010071219A CN111154200A CN 111154200 A CN111154200 A CN 111154200A CN 202010071219 A CN202010071219 A CN 202010071219A CN 111154200 A CN111154200 A CN 111154200A
- Authority
- CN
- China
- Prior art keywords
- parts
- water supply
- pvc
- supply pipe
- calcium carbonate
- 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
- 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
- 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
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of polyvinyl chloride plastic pipeline materials, and particularly relates to a PVC-U water supply pipe with high melt strength and a preparation method thereof. After the surface modification is carried out on the nano calcium carbonate by adopting the silane coupling agent, the PVC-U water supply pipe can obviously improve the compatibility of the nano calcium carbonate and PVC resin, improve the solution strength of the PVC-U water supply pipe, obviously improve the mechanical properties of the finished product tensile strength and the elongation at break which are prepared from other raw materials, and has simple preparation method, easy operation and contribution to large-scale industrial production.
Description
Technical Field
The invention belongs to the technical field of polyvinyl chloride plastic pipeline materials. More particularly, relates to a high melt strength PVC-U water supply pipe material and a preparation method thereof.
Background
Polyvinyl chloride (PVC) is a general plastic material and has the characteristics of flame retardancy, chemical corrosion resistance, wear resistance, good insulativity, high mechanical strength and the like, so that the PVC is widely applied to the fields of chemical industry, building materials, light industry, household appliances, packaging and the like. Among them, rigid polyvinyl chloride (PVC-U) materials are the most widely used plastic materials in construction. Inorganic particles such as calcium carbonate, silicon dioxide, talcum powder and the like can be added in the production and processing processes of the composite material, so that the cost of the high polymer material can be reduced, and the mechanical property of the pipe can be improved. For example, chinese patent application CN104262852A discloses a silica nanoparticle modified polyvinyl chloride plastic particle, which is mainly made of polyvinyl chloride, nano silica particles, calcium carbonate, impact modifier, lead salt stabilizer, processing aid, lubricant, etc., and can improve mechanical properties such as impact resistance, strength, hardness, etc., but the nano silica particles, calcium carbonate inorganic particles and PVC resin therein have a large difference in chemical structure, and the two have a problem of poor compatibility, resulting in a significant decrease in melt strength of the PVC-U material to which the inorganic particles are added, and the melt strength affects the state conversion process of thermoplastic molding, the processing properties of the material, the mechanical properties of the plastic parts, etc., and is an important influence factor in the processing process of the PVC-U material.
Therefore, the PVC-U water supply pipe with high compatibility and good mechanical property and high melt strength and the preparation method thereof are urgently needed.
Disclosure of Invention
The invention aims to solve the technical problems of poor compatibility between inorganic particles and PVC resin, low melt strength of materials and poor mechanical properties of prepared pipes in the prior art, and provides a PVC-U water supply pipe with high melt strength, improved compatibility and good mechanical properties.
The invention also aims to provide a preparation method of the PVC-U water supply pipe.
The invention also aims to provide a water supply pipe prepared from the PVC-U water supply pipe material.
The above purpose of the invention is realized by the following technical scheme:
a PVC-U water supply pipe with high melt strength is prepared from the following raw materials in parts by weight: 80-100 parts of polyvinyl chloride, 10-30 parts of modified nano calcium carbonate, 1-10 parts of calcium-zinc stabilizer, 5-20 parts of impact resistant agent MBS, 1-5 parts of polyethylene wax and 0.5-3 parts of titanium dioxide;
wherein the particle size of the modified nano calcium carbonate is 50-100 nm; the preparation method of the modified nano calcium carbonate comprises the following steps:
and (3) drying the nano calcium carbonate, mixing the dried nano calcium carbonate with a silane coupling agent at the temperature of 60-70 ℃, and stirring for 10-20 min to obtain the nano calcium carbonate.
In the invention, a group at one end of a silane coupling agent molecule reacts with the surface of the nano calcium carbonate to form a chemical bond, so that the surface of the nano calcium carbonate is modified; the group at the other end can be chemically reacted or physically entangled with the PVC resin, so that the nano calcium carbonate with larger molecular structure difference is tightly combined with the PVC resin, the extruded melt strength of the PVC-U water supply pipe is improved, and the comprehensive performance of the pipe is further improved.
In addition, the particle size of the modified nano calcium carbonate is also an important influence factor in the invention: the particle size is too small, so that the modified nano calcium carbonate particles are easy to agglomerate, and the dispersibility of the particles is further influenced; too large a particle size will affect the pipe properties. In practice, the particle size range of the modified nano calcium carbonate is 50-100 nm, preferably 60-80 nm, and all performance indexes of the pipe are better.
Preferably, the PVC-U water supply pipe is prepared from the following raw materials in parts by weight: 90-100 parts of polyvinyl chloride, 10-20 parts of modified nano calcium carbonate, 1-5 parts of calcium-zinc stabilizer, 5-10 parts of impact resistant agent MBS, 1-3 parts of polyethylene wax and 1-3 parts of titanium dioxide.
More preferably, the PVC-U water supply pipe is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 10 parts of modified nano calcium carbonate, 4 parts of calcium-zinc stabilizer, 5 parts of impact resistant agent MBS, 1 part of polyethylene wax and 3 parts of titanium dioxide. In practice, the PVC-U water supply pipe prepared under the condition has high performance.
Preferably, the particle size of the modified nano calcium carbonate is 60-80 nm. In practice, the PVC-U water supply pipe prepared under the condition has high performance.
Furthermore, the adding amount of the silane coupling agent is 5-15 wt% of the nano calcium carbonate.
Still further, the silane coupling agent is selected from one or more of vinyl silane, amino silane, epoxy silane, mercapto silane, and methacryloxy silane.
The vinyl silanes include vinyl triethoxysilane, vinyl trimethoxysilane, and vinyl tris (β -methoxyethoxy) silane.
In addition, the invention also provides a preparation method of the PVC-U water supply pipe, which comprises the following steps: and (3) putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature is 115-135 ℃, stopping stirring when the temperature is reduced to 40-55 ℃, and extruding, molding and cutting to obtain the composite material.
In addition, the invention also provides a water supply pipe prepared from the PVC-U water supply pipe material.
The invention has the following beneficial effects:
after the silane coupling agent is adopted to carry out surface modification on the nano calcium carbonate, the compatibility of the nano calcium carbonate and PVC resin can be obviously improved, the solution strength of the PVC-U water supply pipe is improved, the mechanical properties of the finished product, namely the tensile strength and the elongation at break, prepared from other raw materials are obviously improved, the preparation method is simple, the operation is easy, and the large-scale industrial production is facilitated.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Unless otherwise indicated, reagents and materials used in the following examples are commercially available.
Example 1 high melt strength PVC-U Water supply pipe
The high melt strength PVC-U water supply pipe is prepared from the following raw materials in parts by weight:
100 parts of polyvinyl chloride, 10 parts of modified nano calcium carbonate, 4 parts of calcium-zinc stabilizer, 5 parts of impact resistant agent MBS, 1 part of polyethylene wax and 3 parts of titanium dioxide; wherein the particle size of the modified nano calcium carbonate is 80 nm.
The preparation method comprises the following steps:
s1, drying the nano calcium carbonate for 8 hours at 100 ℃ until the water content is less than or equal to 0.2%, mixing with 10 wt% of vinyl triethoxysilane of the nano calcium carbonate, putting into a high-speed mixer, and stirring for 10min at 60 ℃ to obtain modified nano calcium carbonate;
and S2, putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature is 115 ℃, stopping stirring when the temperature is reduced to 40 ℃, and extruding, molding and cutting by a double-screw extruder to obtain the composite material.
Example 2 high melt strength PVC-U Water supply pipe
The high melt strength PVC-U water supply pipe is prepared from the following raw materials in parts by weight:
100 parts of polyvinyl chloride, 10 parts of modified nano calcium carbonate, 4 parts of calcium-zinc stabilizer, 5 parts of impact resistant agent MBS, 1 part of polyethylene wax and 3 parts of titanium dioxide; wherein the particle size of the modified nano calcium carbonate is 60 nm.
The preparation method comprises the following steps:
s1, drying the nano calcium carbonate for 8 hours at 100 ℃ until the water content is less than or equal to 0.2%, mixing the nano calcium carbonate with vinyl trimethoxy silane accounting for 15 wt% of the nano calcium carbonate, putting the mixture into a high-speed mixer, and stirring the mixture for 15 minutes at 65 ℃ to obtain modified nano calcium carbonate;
and S2, putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature reaches 120 ℃, stopping stirring when the temperature is reduced to 50 ℃, and extruding, molding and cutting by a double-screw extruder to obtain the composite material.
Example 3 high melt strength PVC-U Water supply pipe
The high melt strength PVC-U water supply pipe is prepared from the following raw materials in parts by weight:
100 parts of polyvinyl chloride, 10 parts of modified nano calcium carbonate, 4 parts of calcium-zinc stabilizer, 5 parts of impact resistant agent MBS, 1 part of polyethylene wax and 3 parts of titanium dioxide; wherein the particle size of the modified nano calcium carbonate is 100 nm.
The preparation method comprises the following steps:
s1, drying the nano calcium carbonate for 8 hours at 100 ℃ until the water content is less than or equal to 0.2%, mixing with 12 wt% of vinyl trimethoxy silane of the nano calcium carbonate, putting into a high-speed mixer, and stirring for 10min at 70 ℃ to obtain modified nano calcium carbonate;
and S2, putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature is 135 ℃, stopping stirring when the temperature is 55 ℃, and extruding, molding and cutting by a double-screw extruder to obtain the composite material.
Example 4 high melt strength PVC-U Water supply pipe
The high melt strength PVC-U water supply pipe is prepared from the following raw materials in parts by weight:
80 parts of polyvinyl chloride, 30 parts of modified nano calcium carbonate, 10 parts of calcium-zinc stabilizer, 10 parts of impact resistant agent MBS, 5 parts of polyethylene wax and 0.5 part of titanium dioxide; wherein the particle size of the modified nano calcium carbonate is 50 nm.
The preparation method comprises the following steps:
s1, drying the nano calcium carbonate for 8 hours at 100 ℃ until the water content is less than or equal to 0.2%, mixing with 10 wt% of vinyl tris (β -methoxyethoxy) silane of the nano calcium carbonate, putting into a high-speed mixer, and stirring for 20min at 60 ℃ to obtain modified nano calcium carbonate;
and S2, putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature reaches 120 ℃, stopping stirring when the temperature is reduced to 45 ℃, and extruding, molding and cutting by a double-screw extruder to obtain the composite material.
Example 5 high melt strength PVC-U Water supply pipe
The high melt strength PVC-U water supply pipe is prepared from the following raw materials in parts by weight:
90 parts of polyvinyl chloride, 30 parts of modified nano calcium carbonate, 1 part of calcium-zinc stabilizer, 20 parts of impact resistant agent MBS, 3 parts of polyethylene wax and 2 parts of titanium dioxide; wherein the particle size of the modified nano calcium carbonate is 90 nm.
The preparation method comprises the following steps:
s1, drying the nano calcium carbonate for 8 hours at 100 ℃ until the water content is less than or equal to 0.2%, mixing with 12 wt% of vinyltris (β -methoxyethoxy) silane of the nano calcium carbonate, putting into a high-speed mixer, and stirring for 15min at 65 ℃ to obtain modified nano calcium carbonate;
and S2, putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature is 125 ℃, stopping stirring when the temperature is reduced to 50 ℃, and extruding, molding and cutting by a double-screw extruder to obtain the composite material.
Comparative example 1 PVC-U Water supply pipe
The difference from example 1 is that comparative example 1 replaces the modified nano calcium carbonate with nano calcium carbonate (unmodified), and other parameters and preparation methods refer to example 1.
Comparative example 2 PVC-U Water supply pipe
The difference from example 1 is that the particle size of the modified nano calcium carbonate of comparative example 2 is 45nm, and other parameters and preparation method refer to example 1.
Comparative example 3PVC-U Water supply pipe
The difference from example 1 is that the particle size of the modified nano calcium carbonate of comparative example 3 is 120nm, and other parameters and preparation method refer to example 1.
Experimental example Water supply pipe performance test
Putting the PVC-U water supply pipe prepared in the examples 1-5 and the comparative examples 1-3 into a rheometer of a circular neck mold, wherein the cylinder temperature is 175 ℃, the die head temperature is 170 ℃, and the melt strength is tested; in addition, the PVC-U water supply pipes prepared in examples 1 to 5 and comparative examples 1 to 3 were mixed on a two-roll mixer at 170 to 175 ℃, fully plasticized and tabletted, and the obtained sheets were laminated by a hydraulic press to prepare flat plates of desired thickness, and then sample specimens were prepared by a sample preparation machine and tested for tensile strength and elongation at break, and the results are shown in Table 1.
TABLE 1 Performance test of PVC-U Water supply pipes of examples 1 to 5 and comparative examples 1 to 3
As can be seen from Table 1, the melt strength, tensile strength and elongation at break of the PVC-U water supply pipes prepared in the examples 1-5 of the invention are all at higher levels, while the melt strength, tensile strength and elongation at break of the PVC-U water supply pipes prepared in the comparative examples 1-3 (with the modified nano calcium carbonate removed or replaced) are all significantly reduced, and the performances are poorer.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. The PVC-U water supply pipe with high melt strength is characterized by being prepared from the following raw materials in parts by weight: 80-100 parts of polyvinyl chloride, 10-30 parts of modified nano calcium carbonate, 1-10 parts of calcium-zinc stabilizer, 5-20 parts of impact resistant agent MBS, 1-5 parts of polyethylene wax and 0.5-3 parts of titanium dioxide;
wherein the particle size of the modified nano calcium carbonate is 50-100 nm; the preparation method of the modified nano calcium carbonate comprises the following steps:
and (3) drying the nano calcium carbonate, mixing the dried nano calcium carbonate with a silane coupling agent at the temperature of 60-70 ℃, and stirring for 10-20 min to obtain the nano calcium carbonate.
2. The PVC-U water supply pipe material as recited in claim 1, wherein the PVC-U water supply pipe material is prepared from the following raw materials in parts by weight: 90-100 parts of polyvinyl chloride, 10-20 parts of modified nano calcium carbonate, 1-5 parts of calcium-zinc stabilizer, 5-10 parts of impact resistant agent MBS, 1-3 parts of polyethylene wax and 1-3 parts of titanium dioxide.
3. The PVC-U water supply pipe material as recited in claim 1, wherein the PVC-U water supply pipe material is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 10 parts of modified nano calcium carbonate, 4 parts of calcium-zinc stabilizer, 5 parts of impact resistant agent MBS, 1 part of polyethylene wax and 3 parts of titanium dioxide.
4. The PVC-U water supply pipe material as recited in claim 1, wherein the particle size of the modified nano calcium carbonate is 60-80 nm.
5. The PVC-U water supply pipe material as recited in claim 1, wherein the silane coupling agent is added in an amount of 5-15 wt% based on the weight of the nano calcium carbonate.
6. The PVC-U water supply pipe according to claim 5, wherein the silane coupling agent is selected from one or more of vinyl silane, amino silane, epoxy silane, mercapto silane and methacryloxy silane.
7. The PVC-U water supply pipe according to claim 6, wherein the silane coupling agent is a vinyl silane.
8. A preparation method of the PVC-U water supply pipe material as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps: and (3) putting the raw materials into a hot mixing cylinder, stirring, simultaneously heating, transferring the materials into a cold mixing cylinder for continuous stirring when the temperature is 115-135 ℃, stopping stirring when the temperature is reduced to 40-55 ℃, and extruding, molding and cutting to obtain the composite material.
9. A water supply pipe prepared from the PVC-U water supply pipe material as claimed in any one of claims 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019114074427 | 2019-12-31 | ||
| CN201911407442 | 2019-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111154200A true CN111154200A (en) | 2020-05-15 |
Family
ID=70565173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010071219.6A Pending CN111154200A (en) | 2019-12-31 | 2020-01-21 | High-melt-strength PVC-U water supply pipe and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111154200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403878A (en) * | 2022-08-17 | 2022-11-29 | 安徽瑞丰管业有限公司 | Polyvinyl chloride pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160115308A1 (en) * | 2013-05-09 | 2016-04-28 | Shandong Rike Chemical Co., Ltd. | Polyvinyl chloride modifier and composite, and preparation method therefor |
| CN106380735A (en) * | 2016-08-31 | 2017-02-08 | 安徽金洁塑业有限公司 | Laminated tubular product for high-rise water drainage and manufacturing method thereof |
| CN106496841A (en) * | 2016-09-30 | 2017-03-15 | 河南联塑实业有限公司 | A kind of abrasion resistant fire blocking environment-friendly polyvinyl chloride nanometer calcium carbonate plastics tubing and preparation method thereof |
-
2020
- 2020-01-21 CN CN202010071219.6A patent/CN111154200A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160115308A1 (en) * | 2013-05-09 | 2016-04-28 | Shandong Rike Chemical Co., Ltd. | Polyvinyl chloride modifier and composite, and preparation method therefor |
| CN106380735A (en) * | 2016-08-31 | 2017-02-08 | 安徽金洁塑业有限公司 | Laminated tubular product for high-rise water drainage and manufacturing method thereof |
| CN106496841A (en) * | 2016-09-30 | 2017-03-15 | 河南联塑实业有限公司 | A kind of abrasion resistant fire blocking environment-friendly polyvinyl chloride nanometer calcium carbonate plastics tubing and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘西文: "《挤出成型技术疑难问题解答》", 30 September 2011, 北京：印刷工业出版社 * |
| 张子成等: "《塑料产品设计》", 31 January 2012, 北京：国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403878A (en) * | 2022-08-17 | 2022-11-29 | 安徽瑞丰管业有限公司 | Polyvinyl chloride pipe and preparation method thereof |
| CN115403878B (en) * | 2022-08-17 | 2023-11-21 | 安徽瑞丰管业有限公司 | Polyvinyl chloride pipe and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huang et al. | Optimizing 3D printing performance of acrylonitrile‐butadiene‐styrene composites with cellulose nanocrystals/silica nanohybrids | |
| CN109456563B (en) | Special material for UHMWPE alloy compatibilization toughening modified polypropylene corrugated pipe and preparation method thereof | |
| CN111592667B (en) | Reinforced antibacterial artificial granite waste residue-based plastic master batch and preparation method thereof | |
| CN108129767B (en) | Graphene oxide reinforced PVC/ABS composite pipe and preparation method thereof | |
| WO2022242298A1 (en) | Glass-fiber-reinforced polypropylene composition, preparation method therefor and use thereof | |
| CN115926361A (en) | SEBS carrier silicone master batch and preparation method thereof | |
| CN111171424B (en) | High-fluidity black master batch for PA engineering plastic and preparation method thereof | |
| CN111154200A (en) | High-melt-strength PVC-U water supply pipe and preparation method thereof | |
| CN111732838B (en) | Anti-aging wood-plastic composite material for wood-like furniture and preparation method thereof | |
| CN110079032B (en) | High-strength polyvinyl chloride pipe for communication protection and preparation method thereof | |
| CN108384089B (en) | Modified high-density polyethylene material and preparation method thereof | |
| CN109517402A (en) | A kind of pre-stress fibre Wood-plastic floor | |
| CN112143201B (en) | Polypropylene carbonate composite material and preparation method thereof | |
| CN110791040B (en) | Nano calcium carbonate for toughening PVC (polyvinyl chloride) and preparation method thereof | |
| CN111703154A (en) | High-strength wood-plastic composite material and preparation method thereof | |
| CN112552620A (en) | PVC (polyvinyl chloride) pipe prepared based on nano active calcium carbonate and preparation method thereof | |
| CN108676376B (en) | Modified plastic and preparation method thereof | |
| EP2857194B1 (en) | Multiwall sheets | |
| CN112111136A (en) | Preparation method of reinforced and toughened calcium sulfate whisker composite material | |
| CN110903623A (en) | 30% mineral-reinforced electroplated PC/ABS alloy material and preparation method thereof | |
| CN112094490B (en) | Carbon dioxide-cyclohexene oxide copolymer composite material and preparation method thereof | |
| CN101768301A (en) | Halogen-free flame retarding plastic fabric material and preparation method thereof | |
| CN106280015A (en) | Polypropylene/kaolin composite material and preparation method thereof | |
| CN105111614A (en) | Nontoxic environment-friendly high-flame-retardancy PVC (polyvinyl chloride) wood-plastic material | |
| CN105778293A (en) | Preparation method for ultralight high-rigidity polypropylene modified material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200515 |
|
| RJ01 | Rejection of invention patent application after publication |