CN111454532B - Special material for modified polypropylene cable protection pipe - Google Patents
Special material for modified polypropylene cable protection pipe Download PDFInfo
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- CN111454532B CN111454532B CN202010458671.8A CN202010458671A CN111454532B CN 111454532 B CN111454532 B CN 111454532B CN 202010458671 A CN202010458671 A CN 202010458671A CN 111454532 B CN111454532 B CN 111454532B
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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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
- 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
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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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- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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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
- C08L2205/24—Crystallisation aids
Abstract
The invention belongs to the technical field of cable protection pipes, and particularly relates to a special material for a modified polypropylene cable protection pipe, which comprises the following components in parts by weight: the cable protection tube prepared by the special material has the advantages of high strength, good wear resistance, excellent impact performance and heat resistance and long service life.
Description
Technical Field
The invention belongs to the technical field of cable protection pipes, and particularly relates to a special material for a modified polypropylene cable protection pipe.
Background
The polypropylene plastic is a crystalline polymer, has the advantages of small density, high temperature resistance, excellent electrical insulation, high cost performance and the like, is widely applied to the aspects of household appliances, automobile parts and the like, and the plastic pipe made of polypropylene has the advantages of no toxicity, sanitation, corrosion resistance, long service life and the like. In order to meet the use requirements of the polypropylene pipe on the impact property, the heat resistance and the mechanical comprehensive property of the cable protection pipe, the existing polypropylene raw material at home and abroad can not meet the performance requirements at present, so that the polypropylene material used for the cable protection pipe needs to be modified.
Disclosure of Invention
Aiming at the technical problems at present, the invention relates to a special material for a modified polypropylene cable protection tube, and the cable protection tube prepared by using the special material has the advantages of high strength, good wear resistance, excellent impact performance and heat resistance and long service life.
The technical scheme of the invention is as follows:
the special material for the modified polypropylene cable protection pipe comprises the following components in parts by mass: 65-75 parts of block copolymer polypropylene, 15-25 parts of random copolymer polypropylene, 3-5 parts of propylene octene copolymer, 3-5 parts of nano calcium carbonate, 3-5 parts of nano calcium sulfate whisker, 0.2-0.5 part of polybutadiene-maleic anhydride graft, 0.1-0.4 part of photo-oxygen composite stabilizer, 0.1-0.5 part of silane coupling agent, 0.2-0.5 part of polyvinylpyrrolidone, 0.1-0.3 part of crystallization nucleating agent and 0.1-0.5 part of polytetrafluoroethylene.
Preferably, the melt mass flow rate of the block co-polypropylene is less than 2.0g/10 min. The melt mass flow rate reaction material has smaller molecular weight, and the smaller the numerical value, the larger the molecular weight of the material, so that the tensile strength, the ring stiffness and the bending strength of the selected polypropylene with the melt mass flow rate of less than 2.0g/10min are improved, and the rheological behavior of the polypropylene is more suitable for extrusion molding.
Preferably, the nano calcium sulfate whisker has the average particle size of 80nm and the length-diameter ratio of 90:1, and mainly plays a role in improving the strength.
Preferably, the particle size of the nano calcium carbonate is 20-100 nm, and the nano calcium carbonate has a heterogeneous nucleation effect, can cause the crystal form transformation of polypropylene, and increases the rigidity and toughness of the polypropylene material.
Preferably, the photo-oxygen composite stabilizer is a mixture of an antioxidant 1010, an antioxidant 168 and an ultraviolet light absorber UV 531; further preferably, the photo-oxygen composite stabilizer is prepared by the following method: and uniformly mixing the antioxidant 1010 and the antioxidant 168 according to the mass ratio of 1:3 to obtain a mixture, and uniformly mixing the mixture with an ultraviolet absorbent UV531 according to the mass ratio of 1:1 to obtain the photo-oxygen composite stabilizer which is used as a weather-resistant agent to prolong the service life of the pipe.
The raw materials can be directly purchased from the market.
Preferably, the propylene octene copolymer is available from dow corporation, usa; the silane coupling agent is KH550 produced by New Material Ltd in New blue sky in Hubei; the crystal nucleating agent is selected from RQT-CH and PP nucleating clearing agent produced by Henan Ruiqi speciality chemical engineering Co., Ltd; polyvinylpyrrolidone was purchased from Shanghai Guang, Luke chemical Co., Ltd.; polytetrafluoroethylene is available from the Japan Dajin company.
The polypropylene (PP) is divided into homo-polypropylene (PP-H), block co-polypropylene (PP-B) and random co-polypropylene (PP-R), and the homo-polypropylene has high heat resistance, tensile strength and bending strength, but poor impact resistance, poor toughness, poor dimensional stability, easy aging and poor long-term heat-resistant stability; the PP-R has better comprehensive performance, heat resistance, dimensional stability, low-temperature toughness and transparency; the PP-B has better comprehensive performance and outstanding impact property and low-temperature impact property.
According to the invention, the block copolymer polypropylene and the random copolymer polypropylene are taken as basic raw materials, the propylene-octene copolymer is an elastomer material, and the toughness of the polypropylene material can be obviously improved after the propylene-octene copolymer is added into a system; the polybutadiene-maleic anhydride graft is used as a solubilizer, and after the polybutadiene-maleic anhydride graft is added into a system, the compatibility of polypropylene and a propylene-octene copolymer is improved, and the impact strength of a polypropylene material is improved; the silane coupling agent can improve the compatibility of polypropylene with nano calcium carbonate and nano calcium sulfate whiskers, can obviously improve the surface properties of the nano calcium carbonate and the nano calcium sulfate whiskers, increases the compatibility with a system, can be well dispersed uniformly, and plays a role in obvious reinforcement, so that the tensile strength, the bending strength, the impact strength and the heat resistance of a polypropylene material are improved; the crystallization nucleating agent can cause the crystal form of the polypropylene to be transformed and refined, and further improve the strength, heat resistance and toughness of the polypropylene material; the wear resistance of the polypropylene material is improved by the polyvinylpyrrolidone and the polytetrafluoroethylene, and the polyvinylpyrrolidone also has the functions of lubrication and dispersion; the photo-oxygen composite stabilizer is used as a weather resistant agent to improve the service life of the polypropylene material. According to the invention, the block copolymerization polypropylene and the random copolymerization polypropylene are used as basic raw materials, the PP-B and the PP-R are mixed according to a certain proportion, the advantages of the PP-B and the PP-R are achieved, and the propylene-octene copolymer, the polybutadiene-maleic anhydride graft, the silane coupling agent, the nano calcium carbonate, the nano calcium sulfate whisker, the polyvinylpyrrolidone and the polytetrafluoroethylene are matched according to a certain proportion, so that the comprehensive performance of the polypropylene material is obviously improved.
The cable protection tube prepared from the special material for the modified polypropylene cable protection tube provided by the invention has the advantages of high strength, good wear resistance, excellent impact property and heat resistance, long service life and suitability for industrial application.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following examples:
photo-oxygen composite stabilizer: antioxidant 1010: uniformly mixing the antioxidant 168 according to the mass ratio of 1:3 to obtain a mixture, and uniformly mixing the obtained mixture with an ultraviolet absorbent UV531 according to the mass ratio of 1:1 to obtain a photo-oxygen composite stabilizer;
propylene octene copolymers are available from dow company, usa; the silane coupling agent is KH550 produced by New Material Ltd in New blue sky in Hubei; the crystal nucleating agent is selected from RQT-CH and PP nucleating clearing agent produced by Henan Ruiqi speciality chemical engineering Co., Ltd; polyvinylpyrrolidone was purchased from Shanghai Guang, Luke chemical Co., Ltd.; polytetrafluoroethylene is available from Japan Dajin;
the melt mass flow rate of the block copolymer polypropylene is less than 2.0g/10 min; the average grain diameter of the calcium sulfate nano whisker is 80nm, and the length-diameter ratio is 90: 1; the particle size of the nano calcium carbonate is 20-100 nm.
Example 1
The special material for the modified polypropylene cable protection pipe comprises the following components in parts by mass: 65 parts of block copolymer polypropylene, 25 parts of random copolymer polypropylene, 5 parts of propylene-octene copolymer, 4 parts of nano calcium carbonate, 5 parts of nano calcium sulfate whisker, 0.2 part of photo-oxygen composite stabilizer, 0.3 part of polybutadiene-maleic anhydride graft, 0.3 part of silane coupling agent, 0.2 part of crystallization nucleating agent, 0.5 part of polyvinylpyrrolidone and 0.3 part of polytetrafluoroethylene.
Example 2
The special material for the modified polypropylene cable protection pipe comprises the following components in parts by mass: the material comprises 70 parts of block copolymerization polypropylene, 20 parts of random copolymerization polypropylene, 4 parts of propylene octene copolymer, 4 parts of nano calcium carbonate, 5 parts of nano calcium sulfate whisker, 0.3 part of photo-oxygen composite stabilizer, 0.4 part of polybutadiene-maleic anhydride graft, 0.5 part of silane coupling agent, 0.2 part of crystallization nucleating agent, 0.4 part of polyvinylpyrrolidone and 0.3 part of polytetrafluoroethylene.
Example 3
The special material for the modified polypropylene cable protection pipe comprises the following components in parts by mass: the material comprises 75 parts of block copolymerization polypropylene, 15 parts of random copolymerization polypropylene, 3 parts of propylene octene copolymer, 4 parts of nano calcium carbonate, 5 parts of nano calcium sulfate whisker, 0.4 part of photo-oxygen composite stabilizer, 0.5 part of polybutadiene-maleic anhydride graft, 0.5 part of silane coupling agent, 0.3 part of crystallization nucleating agent, 0.3 part of polyvinylpyrrolidone and 0.3 part of polytetrafluoroethylene.
COMPARATIVE EXAMPLE 1 (existing conventional Cable protection tube Material)
A cable protective tubing material comprising, in parts by mass: comprises 90 parts of random copolymerization polypropylene, 7 parts of nano calcium carbonate, 0.3 part of photo-oxygen composite stabilizer and 0.5 part of silane coupling agent.
Test examples
According to the formula of the embodiment 1-3, the silane coupling agent, the nano calcium carbonate and the nano calcium sulfate whisker are uniformly mixed, then the mixture is mixed with other raw material components, the special material uniformly mixed in a mixer is extruded and granulated by adopting parallel double screws, the length-diameter ratio of the double screws is (40-50): 1, the temperatures of all sections of an extruder are respectively 150 ℃, 160 ℃, 170 ℃, 175 ℃, 180 ℃, 170 ℃ of a machine head, and the rotating speed of the screws is 120 r/min.
According to the formula of the comparative example 1, firstly, uniformly mixing the silane coupling agent and the nano calcium carbonate, then, mixing the mixture with other raw material components, extruding and granulating the uniformly mixed raw materials in a mixer by adopting parallel double screws, wherein the length-diameter ratio of the double screws is (40-50): 1, the temperatures of all sections of an extruder are respectively 150 ℃, 160 ℃, 170 ℃, 175 ℃, 180 ℃, 170 ℃ of a machine head, and 120r/min of the screw rotating speed.
The cable protective pipes prepared according to the raw material formulations of examples 1 to 3 and comparative example 1 were tested for properties, as shown in table 1 below,
table 1:
the cable protection pipes prepared from the special materials for the cable protection pipes provided in examples 1 to 3 and comparative example 1 are tested, and it can be seen from the table that the tensile strength, elongation at break, micro-card softening temperature and ring stiffness of the cable protection pipes prepared from the special materials of examples 1 to 3 are equivalent to those of the power cable protection of comparative example 1, even higher than those of comparative example 1; the impact strength and the bending strength of the notch of the simply supported beam of the cable protection tube prepared by the special material of the embodiment 1-3 are obviously improved compared with the impact strength and the bending strength of the cable protection tube prepared by the special material of the comparative example 1, because a certain proportion of PP-B is added in the cable protection tube, a certain proportion of PP-B and PP-R are mixed for use, and a certain amount of polybutadiene-maleic anhydride graft, a silane coupling agent, nano calcium carbonate and nano calcium sulfate whisker are used in cooperation, the impact strength and the bending strength of the tube are obviously improved; the wear resistance coefficient of the cable protection tube prepared by the special material in the embodiment 1-3 is obviously lower than that of the cable protection tube prepared by the special material in the comparative example 1, and the wear resistance of the tube is obviously improved due to the addition of the polyvinylpyrrolidone and the polytetrafluoroethylene in the system of the application; the table 1 shows that the cable protection tube prepared from the cable protection tube special material has better comprehensive performance than the cable protection tube prepared from the cable protection tube material of the comparative example 1, the cable protection tube prepared from the cable protection tube special material provided by the invention has the advantages of PP-B and PP-R by taking block copolymerization polypropylene and random copolymerization polypropylene as basic raw materials, and the propylene-octene copolymer, polybutadiene-maleic anhydride graft, silane coupling agent, nano calcium carbonate, nano calcium sulfate whisker, polyvinylpyrrolidone and polytetrafluoroethylene are matched to obviously improve the comprehensive performance of the polypropylene material.
Claims (3)
1. The special material for the modified polypropylene cable protection pipe is characterized by comprising the following components in parts by mass: 65-75 parts of block copolymer polypropylene, 15-25 parts of random copolymer polypropylene, 3-5 parts of propylene octene copolymer, 3-5 parts of nano calcium carbonate, 3-5 parts of nano calcium sulfate whisker, 0.2-0.5 part of polybutadiene-maleic anhydride graft, 0.1-0.4 part of photo-oxygen composite stabilizer, 0.1-0.5 part of silane coupling agent, 0.2-0.5 part of polyvinylpyrrolidone, 0.1-0.3 part of crystallization nucleating agent and 0.1-0.5 part of polytetrafluoroethylene;
the particle size of the nano calcium carbonate is 20-100 nm;
the melt mass flow rate of the block copolymerization polypropylene is less than 2.0g/10 min;
the photo-oxygen composite stabilizer is a mixture of an antioxidant 1010, an antioxidant 168 and an ultraviolet light absorber UV 531.
2. The material as claimed in claim 1, wherein the calcium sulfate nanocrystallites have an average particle size of 80nm and an aspect ratio of 90: 1.
3. The material special for the modified polypropylene cable protection tube according to claim 1, wherein the preparation method of the photo-oxygen composite stabilizer comprises the following steps: and uniformly mixing the antioxidant 1010 and the antioxidant 168 according to the mass ratio of 1:3 to obtain a mixture, and uniformly mixing the mixture with the ultraviolet absorbent UV531 according to the mass ratio of 1:1 to obtain the photo-oxygen composite stabilizer.
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| CN202010458671.8A CN111454532B (en) | 2020-05-26 | 2020-05-26 | Special material for modified polypropylene cable protection pipe |
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| CN202010458671.8A CN111454532B (en) | 2020-05-26 | 2020-05-26 | Special material for modified polypropylene cable protection pipe |
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| CN111454532A CN111454532A (en) | 2020-07-28 |
| CN111454532B true CN111454532B (en) | 2022-07-12 |
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| CN113429682A (en) * | 2021-07-13 | 2021-09-24 | 韩山师范学院 | Polypropylene composite material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356591A (en) * | 2001-05-30 | 2002-12-13 | Yazaki Corp | Electric wire protection tube |
| CN103183895A (en) * | 2013-03-18 | 2013-07-03 | 广东威立瑞科技有限公司 | Special material formula for trenchless modified polypropylene pipe |
| CN105086158A (en) * | 2015-09-23 | 2015-11-25 | 江苏瀚能电气有限公司 | Special material for cable protection pipe |
| CN109401045A (en) * | 2018-09-06 | 2019-03-01 | 福建师范大学 | A kind of performance function alloy modified polypropene ripple pipe as special material and preparation method thereof |
-
2020
- 2020-05-26 CN CN202010458671.8A patent/CN111454532B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356591A (en) * | 2001-05-30 | 2002-12-13 | Yazaki Corp | Electric wire protection tube |
| CN103183895A (en) * | 2013-03-18 | 2013-07-03 | 广东威立瑞科技有限公司 | Special material formula for trenchless modified polypropylene pipe |
| CN105086158A (en) * | 2015-09-23 | 2015-11-25 | 江苏瀚能电气有限公司 | Special material for cable protection pipe |
| CN109401045A (en) * | 2018-09-06 | 2019-03-01 | 福建师范大学 | A kind of performance function alloy modified polypropene ripple pipe as special material and preparation method thereof |
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