CN112143054A - Preparation method of damping rubber material - Google Patents
Preparation method of damping rubber material Download PDFInfo
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- CN112143054A CN112143054A CN202011133897.7A CN202011133897A CN112143054A CN 112143054 A CN112143054 A CN 112143054A CN 202011133897 A CN202011133897 A CN 202011133897A CN 112143054 A CN112143054 A CN 112143054A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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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- 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 preparation method of a damping rubber material, which comprises the steps of dispersing 3-6 parts of maleic anhydride in 11-15 parts of acetone, stirring and mixing with 1-2 parts of antioxidant and 80-90 parts of ethylene-vinyl acetate copolymer for 5-20 minutes, extruding in a double-screw extruder at the temperature of 100-150 ℃ after acetone is completely volatilized, placing ungrafted master batches for irradiation, wherein the irradiation dose is 8-20 kGy, and preparing a radiation grafting compatilizer; the damping rubber material is prepared by the following specific steps: plasticating nitrile rubber, butyl rubber and ethylene propylene diene monomer, adding polyurethane resin, polymethyl methacrylate, filler, sulfur, an accelerator, an anti-aging agent, a plasticizer, a radiation grafting compatilizer and an inorganic flame retardant, mixing, and standing to obtain mixed rubber; (2) and vulcanizing the obtained rubber compound, and discharging to obtain the damping rubber material. The invention has the advantage of improving the temperature range of the damping rubber material.
Description
Technical Field
The invention relates to a damping rubber material, in particular to a preparation method of the damping rubber material.
Background
The damping material absorbs the mechanical energy of the vibration and converts it into heat energy which is lost. The damping material can be divided into ceramic damping material, piezoelectric damping material, high damping alloy material, high molecular damping material, organic-inorganic hybrid damping material and the like. Wherein, the polymer damping material is the most widely researched damping material. The rubber damping material is one of important types of polymer damping materials, the damping performance of the rubber damping material depends on the mechanical relaxation of molecular chain segments, in the mechanical relaxation process, the molecular chain segments generate heat through friction to consume a part of mechanical energy, and the energy loss capacity is determined by the size of a loss factor tan. The rubber damping material is adopted, so that the mechanical noise and the mechanical vibration can be reduced to the maximum extent, the working efficiency is improved, and the improvement of the product quality is facilitated.
CN107200883A discloses a damping rubber material, which is composed of the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 30-40 parts of butyl rubber, 20-30 parts of ethylene propylene diene monomer, 20-30 parts of polyurethane resin, 6-10 parts of polymethyl methacrylate, 60-80 parts of filler, 3-5 parts of sulfur, 1-3 parts of accelerator, 1-3 parts of anti-aging agent and 1-3 parts of plasticizer; the filler is prepared by the following specific steps: according to the mass ratio of 1: 30-1: 50 dispersing carbon fibers in an ethanol solution, adding tetraethoxysilane with the mass of 0.3-0.6 time that of the carbon fibers into the ethanol solution, stirring at a constant temperature for reaction for 2-4 hours, filtering, washing, drying and reacting at a high temperature to obtain a filler; the damping rubber material is prepared by the following specific steps: (1) plasticating nitrile rubber, butyl rubber and ethylene propylene diene monomer rubber at the temperature of 40-80 ℃ for 20-30 min, then adding polyurethane resin, polymethyl methacrylate, filler, sulfur, accelerator, anti-aging agent and plasticizer, mixing for 5-15 min, and standing for 8-12 h to obtain mixed rubber; (2) and vulcanizing the obtained rubber compound for 20-60 min, and discharging to obtain the damping rubber material.
Although the method solves the problem that the mechanical property of the damping rubber material is sharply reduced after the damping rubber material exceeds the damping temperature range, along with the popularization of the application of the damping rubber, the damping rubber material is applied to some special places or environments, for example, the damping rubber material is applied to places with higher temperature (150 ℃), and the mechanical property of the damping rubber material is reduced due to the aging of the damping rubber along with the increase of the temperature.
Disclosure of Invention
The invention provides a preparation method of a damping rubber material for improving a damping temperature range.
The preparation method of the damping rubber material comprises the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 30-40 parts of butyl rubber, 20-30 parts of ethylene propylene diene monomer, 20-30 parts of polyurethane resin, 6-10 parts of polymethyl methacrylate, 60-80 parts of filler, 3-5 parts of sulfur, 1-3 parts of accelerator, 1-3 parts of anti-aging agent, 1-3 parts of plasticizer, 10-30 parts of radiation grafting compatilizer and 10-20 parts of inorganic flame retardant;
the preparation method of the radiation grafting compatilizer comprises the following steps: dispersing 3-6 parts of maleic anhydride in 11-15 parts of acetone, mixing with 1-2 parts of antioxidant and 80-90 parts of ethylene-vinyl acetate copolymer under stirring for 5-20 minutes, extruding in a double-screw extruder at the temperature of 100-150 ℃ after acetone is completely volatilized, forming strips after water cooling of an extruded material, granulating the strips to obtain ungrafted master batches, placing the ungrafted master batches for irradiation, wherein the irradiation dose is 8-20 kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1-3% and the gel content of less than or equal to 10%;
the damping rubber material is prepared by the following specific steps: (1) plasticating nitrile rubber, butyl rubber and ethylene propylene diene monomer rubber at the temperature of 40-80 ℃ for 20-30 min, adding polyurethane resin, polymethyl methacrylate, filler, sulfur, an accelerator, an anti-aging agent, a plasticizer, a radiation grafting compatilizer and an inorganic flame retardant, mixing for 5-15 min, and standing for 8-12 h to obtain rubber compound;
(2) and vulcanizing the obtained rubber compound for 20-60 min, and discharging to obtain the damping rubber material.
Further, the antioxidant comprises a main antioxidant, and the main antioxidant is one or two of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester.
Furthermore, the antioxidant also comprises an auxiliary antioxidant, and the auxiliary antioxidant is one or two of didodecyl thiodipropionate and dioctadecyl thiodipropionate.
Further, the temperature of the mixer during mixing is 40-60 ℃, and the stirring speed during mixing is 200-400 rpm.
Further, the inorganic flame retardant consists of magnesium hydroxide and aluminum hydroxide, wherein the weight part ratio of the magnesium hydroxide to the aluminum hydroxide is 30-50: 20-40.
According to the invention, the radiation grafting compatilizer is added, firstly, in the preparation process of the radiation grafting compatilizer, the molecular bond of the polymer is partially broken under the action of heating and high shearing of the ethylene-vinyl acetate copolymer in a double-screw extruder, and the problem is solved by adding the antioxidant material. Secondly, in the preparation process of the damping rubber material, the radiation grafting compatilizer is fused with the nitrile rubber, the butyl rubber and the ethylene propylene diene monomer rubber, and the radiation grafting compatilizer induces the formation of macromolecular free radicals of the nitrile rubber, the butyl rubber and the ethylene propylene diene monomer rubber, so that the effective grafting of the macromolecular free radicals is controlled, and the composite material with covalent grafting is prepared. By the method, the glass transition temperature and the strength of the damping rubber material are improved, and the width of a glass transition peak is increased, so that the damping temperature range of a product is remarkably widened, and the mechanical performance of the product is remarkably improved.
Detailed Description
The invention relates to a preparation method of a damping rubber material, which comprises the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 30-40 parts of butyl rubber, 20-30 parts of ethylene propylene diene monomer, 20-30 parts of polyurethane resin, 6-10 parts of polymethyl methacrylate, 60-80 parts of filler, 3-5 parts of sulfur, 1-3 parts of accelerator, 1-3 parts of anti-aging agent, 1-3 parts of plasticizer, 10-30 parts of radiation grafting compatilizer and 10-20 parts of inorganic flame retardant.
The preparation method of the radiation grafting compatilizer comprises the following steps: dispersing 3-6 parts of maleic anhydride in 11-15 parts of acetone, mixing with 1-2 parts of antioxidant and 80-90 parts of ethylene-vinyl acetate copolymer under stirring for 5-20 minutes, extruding in a double-screw extruder at the temperature of 100-150 ℃ after acetone is completely volatilized, forming strips after water cooling of an extruded material, granulating the strips to obtain ungrafted master batches, placing the ungrafted master batches for irradiation, wherein the irradiation dose is 8-20 kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1-3% and the gel content of less than or equal to 10%.
The damping rubber material is prepared by the following specific steps: (1) plasticating nitrile rubber, butyl rubber and ethylene propylene diene monomer rubber at the temperature of 40-80 ℃ for 20-30 min, adding polyurethane resin, polymethyl methacrylate, filler, sulfur, an accelerator, an anti-aging agent, a plasticizer, a radiation grafting compatilizer and an inorganic flame retardant, mixing for 5-15 min, and standing for 8-12 h to obtain rubber compound; (2) and vulcanizing the obtained rubber compound for 20-60 min, and discharging to obtain the damping rubber material.
Preferably, the antioxidant comprises a main antioxidant, and the main antioxidant is one or two of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester. The antioxidant also comprises an auxiliary antioxidant, wherein the auxiliary antioxidant is one or two of didodecyl thiodipropionate and distearyl thiodipropionate. The temperature of the mixer is 40-60 ℃ and the stirring speed is 200-400 rpm. The inorganic flame retardant consists of magnesium hydroxide and aluminum hydroxide, wherein the weight part ratio of the magnesium hydroxide to the aluminum hydroxide is (30-50): 20-40. The filler used in the present invention is the same as the filler in the background art, and is not described herein.
Example 1
Dispersing 3 parts of maleic anhydride in 11 parts of acetone, mixing with 1 part of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and 80 parts of ethylene-vinyl acetate copolymer at a stirring speed of 400 rpm in a mixer for 5 minutes at the temperature of 40 ℃, extruding in a double-screw extruder at the temperature of 100 ℃ after the acetone is completely volatilized, forming strips after the extrudate is cooled by water, cutting the strips into particles to obtain ungrafted master batches, placing the ungrafted master batches for irradiation with the irradiation dose of 8kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1 percent and the gel content of less than or equal to 10 percent.
According to the weight portion, 60 portions of nitrile rubber, 30 portions of butyl rubber, 20 portions of ethylene propylene diene monomer, 20 portions of polyurethane resin, 6 portions of polymethyl methacrylate, 60 portions of filler, 3 portions of sulfur, 1 portion of accelerant TMTD, 1 portion of antiager, 1 portion of dioctyl phthalate, 10 portions of radiation grafting compatilizer and 10 portions of inorganic flame retardant are taken in sequence, firstly, the nitrile rubber, the butyl rubber and the ethylene propylene diene monomer are plastified for 20min at the temperature of 40 ℃, then, the polyurethane resin, the polymethyl methacrylate, the filler, the sulfur, the accelerant TMTD, the antiager, the dioctyl phthalate, the radiation grafting compatilizer and the inorganic flame retardant are added, the mixture is mixed for 5min at the temperature of 130 ℃, the material is discharged, the mixture is kept stand for 8h at the room temperature to obtain mixed rubber, then, the mixed rubber is placed in a flat plate vulcanizing machine, and is vulcanized for 20min at the temperature of 160 ℃ and the pressure of 20MPa, discharging, and naturally cooling to room temperature to obtain the damping rubber material.
Example 2
Dispersing 5 parts of maleic anhydride in 13 parts of acetone, mixing with 1.5 parts of octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and 85 parts of ethylene-vinyl acetate copolymer in a mixer at the temperature of 50 ℃ and the stirring speed of 300 rpm for 10 minutes, extruding in a double-screw extruder at the temperature of 120 ℃ after the acetone is completely volatilized, forming strips after the extrudate is cooled by water, cutting the strips into particles to obtain ungrafted master batches, placing the ungrafted master batches for irradiation with the irradiation dose of 15kGy, and preparing the radiation grafting compatilizer with the grafting rate of 2 percent and the gel content of less than or equal to 10 percent.
According to parts by weight, taking 72 parts of nitrile rubber, 28 parts of butyl rubber, 26 parts of ethylene propylene diene monomer, 24 parts of polyurethane resin, 8 parts of polymethyl methacrylate, 70 parts of filler, 4 parts of sulfur, 2 parts of accelerator TMTD, 2 parts of anti-aging agent, 2 parts of dioctyl phthalate, 20 parts of radiation grafting compatilizer and 15 parts of inorganic flame retardant in sequence, plastifying the nitrile rubber, the butyl rubber and the ethylene propylene diene monomer at the temperature of 65 ℃ for 25min, adding the polyurethane resin, the polymethyl methacrylate, the filler, the sulfur, the accelerator TMTD, the anti-aging agent, the dioctyl phthalate, the radiation grafting compatilizer and the inorganic flame retardant, mixing for 10min at the temperature of 150 ℃, discharging, standing for 10h at room temperature to obtain mixed rubber, placing the obtained mixed rubber in a flat plate vulcanizing machine, vulcanizing for 30min at the temperature of 180 ℃ and the pressure of 25MPa, discharging, and naturally cooling to room temperature to obtain the damping rubber material.
Example 3
Dispersing 6 parts of maleic anhydride in 15 parts of acetone, mixing with 2 parts of octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and 90 parts of ethylene-vinyl acetate copolymer in a mixer at the temperature of 60 ℃ and the stirring speed of 250 rpm for 18 minutes, extruding in a double-screw extruder at the temperature of 140 ℃ after the acetone is completely volatilized, forming strips after the extrudate is cooled by water, cutting the strips into particles to obtain ungrafted master batches, placing the ungrafted master batches for irradiation with the irradiation dose of 20kGy, and preparing the radiation grafting compatilizer with the grafting rate of 3 percent and the gel content of less than or equal to 10 percent.
According to the weight portion, 80 portions of nitrile rubber, 40 portions of butyl rubber, 30 portions of ethylene propylene diene monomer, 30 portions of polyurethane resin, 10 portions of polymethyl methacrylate, 80 portions of filler, 5 portions of sulfur, 6 portions of accelerant TMTD, 6 portions of antiager, 6 portions of dioctyl phthalate, 30 portions of radiation grafting compatilizer and 20 portions of inorganic flame retardant are taken in sequence, firstly, the nitrile rubber, the butyl rubber and the ethylene propylene diene monomer are plastified for 30min at the temperature of 80 ℃, then, the polyurethane resin, the polymethyl methacrylate, the filler, the sulfur, the accelerant TMTD, the antiager, the dioctyl phthalate, the radiation grafting compatilizer and the inorganic flame retardant are added, the mixture is mixed for 15min at the temperature of 160 ℃, the material is discharged, the mixture is kept stand for 12h at the room temperature to obtain mixed rubber, then, the mixed rubber is placed in a flat plate vulcanizing machine, and is vulcanized for 30min at the temperature of 200 ℃ and the pressure of 30MPa, discharging, and naturally cooling to room temperature to obtain the damping rubber material.
The comparative examples are: example 3 in CN 107200883A.
The properties of examples 1 to 3 were tested and the tested properties of examples 1 to 3 were compared with those of comparative example 1, as specified in the following table:
through the experiment, the performance of the damping rubber is obviously improved under the improvement of the original technology of the company, namely after the radiation grafting compatilizer is added on the basis of the original formula, the performances of the damping rubber, specifically, the tensile strength, the elongation at break, the retention rate of the elongation at break and the like are obviously improved, and the resistance to the radiation grafting compatilizer is obviously improved60In the experiment of Co source gamma ray, the elongation at break shows excellent data, so that the aging resistance is improved on the basis of the original scheme.
Claims (5)
1. The preparation method of the damping rubber material is characterized by comprising the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 30-40 parts of butyl rubber, 20-30 parts of ethylene propylene diene monomer, 20-30 parts of polyurethane resin, 6-10 parts of polymethyl methacrylate, 60-80 parts of filler, 3-5 parts of sulfur, 1-3 parts of accelerator, 1-3 parts of anti-aging agent, 1-3 parts of plasticizer, 10-30 parts of radiation grafting compatilizer and 10-20 parts of inorganic flame retardant;
the preparation method of the radiation grafting compatilizer comprises the following steps: dispersing 3-6 parts of maleic anhydride in 11-15 parts of acetone, mixing with 1-2 parts of antioxidant and 80-90 parts of ethylene-vinyl acetate copolymer under stirring for 5-20 minutes, extruding in a double-screw extruder at the temperature of 100-150 ℃ after acetone is completely volatilized, forming strips after water cooling of an extruded material, granulating the strips to obtain ungrafted master batches, placing the ungrafted master batches for irradiation, wherein the irradiation dose is 8-20 kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1-3% and the gel content of less than or equal to 10%;
the damping rubber material is prepared by the following specific steps: (1) plasticating nitrile rubber, butyl rubber and ethylene propylene diene monomer rubber at the temperature of 40-80 ℃ for 20-30 min, adding polyurethane resin, polymethyl methacrylate, filler, sulfur, an accelerator, an anti-aging agent, a plasticizer, a radiation grafting compatilizer and an inorganic flame retardant, mixing for 5-15 min, and standing for 8-12 h to obtain rubber compound;
(2) and vulcanizing the obtained rubber compound for 20-60 min, and discharging to obtain the damping rubber material.
2. The method for preparing damping rubber material according to claim 1, wherein the antioxidant comprises a main antioxidant, and the main antioxidant is one or two of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
3. The method for preparing the damping rubber material as claimed in claim 2, wherein the antioxidant further comprises an auxiliary antioxidant, and the auxiliary antioxidant is one or two of didodecyl thiodipropionate and dioctadecyl thiodipropionate.
4. The method for preparing damping rubber material according to claim 1, wherein the temperature of the mixer during mixing is 40-60 ℃, and the stirring speed during mixing is 200-400 rpm.
5. The preparation method of the damping rubber material as claimed in claim 1, wherein the inorganic flame retardant is composed of magnesium hydroxide and aluminum hydroxide, and the weight part ratio of the magnesium hydroxide to the aluminum hydroxide is 30-50: 20-40.
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| CN202011133897.7A CN112143054A (en) | 2020-10-21 | 2020-10-21 | Preparation method of damping rubber material |
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| CN202011133897.7A CN112143054A (en) | 2020-10-21 | 2020-10-21 | Preparation method of damping rubber material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100537A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院上海应用物理研究所 | Low-smoke halide-free fireproof polyolefine material and its preparation method and application |
| CN101597395A (en) * | 2009-06-24 | 2009-12-09 | 上海至正道化高分子材料有限公司 | A kind of fireproofing cable material without halide and preparation method thereof |
| CN107200883A (en) * | 2017-06-28 | 2017-09-26 | 常州市瑞泰物资有限公司 | A kind of damping rubber material |
| WO2017177482A1 (en) * | 2016-04-15 | 2017-10-19 | 扬州市好年华高分子材料有限公司 | Oil-resistant, low-smoke, halogen-free and flame-retardant polyolefin cable material and preparation method therefor |
-
2020
- 2020-10-21 CN CN202011133897.7A patent/CN112143054A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100537A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院上海应用物理研究所 | Low-smoke halide-free fireproof polyolefine material and its preparation method and application |
| CN101597395A (en) * | 2009-06-24 | 2009-12-09 | 上海至正道化高分子材料有限公司 | A kind of fireproofing cable material without halide and preparation method thereof |
| WO2017177482A1 (en) * | 2016-04-15 | 2017-10-19 | 扬州市好年华高分子材料有限公司 | Oil-resistant, low-smoke, halogen-free and flame-retardant polyolefin cable material and preparation method therefor |
| CN107200883A (en) * | 2017-06-28 | 2017-09-26 | 常州市瑞泰物资有限公司 | A kind of damping rubber material |
Non-Patent Citations (4)
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| 山西省化工研究所编: "《聚氨酯弹性体手册》", 31 January 2001, 化学工业出版社 * |
| 文国元等: "《多能的塑料》", 31 October 1978, 上海科学技术出版社 * |
| 李晓林编: "《橡塑并用》", 30 April 1998, 化学工业出版社 * |
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Application publication date: 20201229 |