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Preparation method of composite rubber cable sheath material with low temperature resistance and tensile resistance

A composite rubber and cable sheathing technology, applied in the direction of rubber insulators, organic insulators, etc., can solve problems such as easy aggregation, interface defects, and difficulty in uniform dispersion, so as to improve mechanical properties and wear resistance, and facilitate large-scale production The effect of industrialized production and simple preparation process

Inactive Publication Date: 2019-10-18
安庆市泽烨新材料技术推广服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, in the actual production process, the cable sheath material will be used with a large amount of inorganic fillers (such as inorganic reinforcing agents, inorganic flame retardants, etc.), thereby changing the vulcanization properties, physical and mechanical properties and thermal properties of the rubber compound, but There are two disadvantages when inorganic fillers are directly added to the rubber compound: one is that the surface energy of inorganic filler particles is high, and they are in a thermodynamically unstable state, which is easy to aggregate into agglomerates, which directly affects the application effect of inorganic filler particles; Hydrophobic and oil-repellent, strong polarity, it is difficult to disperse evenly in the rubber compound, and the bonding force with the rubber compound is weak, causing interface defects, resulting in a decrease in the performance of the cable sheath material

Method used

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  • Preparation method of composite rubber cable sheath material with low temperature resistance and tensile resistance
  • Preparation method of composite rubber cable sheath material with low temperature resistance and tensile resistance
  • Preparation method of composite rubber cable sheath material with low temperature resistance and tensile resistance

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preparation example Construction

[0027] see figure 1 A method for preparing a low-temperature-resistant and tensile-resistant composite rubber cable sheath material provided by the invention comprises the following steps:

[0028] (1) Disperse the inorganic filler in the organic solvent to form a suspension, raise the temperature of the suspension to 60-80°C, add the silane coupling agent, stir at 60-80°C for 1-4 hours, and then add the epoxy resin, Continue to stir at 60-80°C for 1-3 hours, filter, wash, and dry to obtain a composite modified inorganic filler, the inorganic filler is selected from one or more of white carbon black, calcium carbonate, magnesium hydroxide, bentonite, and kaolin kind;

[0029] (2) Add the main polymer material into the internal mixer, heat up to 70-85°C and knead for 5-20 minutes, wherein the main polymer material is one of natural rubber, neoprene, vinyl chloride resin or various;

[0030] (3) Add composite modified inorganic fillers into the internal mixer, and mix at 70-8...

Embodiment 1

[0057] The preparation method of a low-temperature-resistant and tensile-resistant composite rubber cable sheath material provided in this embodiment includes the following steps:

[0058] (1) Weigh the raw materials according to the following parts by weight: 20 parts of white carbon black, 35 parts of calcium carbonate, 10 parts of magnesium hydroxide, 130 parts of absolute ethanol, γ-methacryloxypropyl trimethoxy 9 parts of base silane and 9 parts of epoxy resin; disperse white carbon black, calcium carbonate, and magnesium hydroxide in absolute ethanol by ultrasonic waves to form a suspension, raise the temperature of the suspension to 75°C, add γ-methylpropene Acyloxypropyltrimethoxysilane, stirred at 75°C for 3h, added epoxy resin, continued to stir at 75°C for 2h, filtered, washed, and dried to obtain a composite modified inorganic filler;

[0059] (2) Weigh the raw materials according to the following parts by weight: 60 parts of natural rubber, 30 parts of chloroprene...

Embodiment 2

[0062] The preparation method of a low-temperature-resistant and tensile-resistant composite rubber cable sheath material provided in this embodiment includes the following steps:

[0063] (1) Weigh the raw materials according to the following parts by weight: 10 parts of white carbon black, 50 parts of calcium carbonate, 10 parts of magnesium hydroxide, 140 parts of absolute ethanol, γ-methacryloxypropyl trimethoxy 7 parts of base silane and 7 parts of epoxy resin; disperse white carbon black, calcium carbonate and magnesium hydroxide in absolute ethanol by ultrasonic waves, and prepare a suspension, raise the temperature of the suspension to 75°C, add γ-methylpropene Acyloxypropyltrimethoxysilane, stirred at 75°C for 3h, added epoxy resin, continued to stir at 75°C for 2h, filtered, washed, and dried to obtain a composite modified inorganic filler;

[0064] (2) Weigh the raw materials according to the following parts by weight: 70 parts of natural rubber, 20 parts of chlorop...

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Abstract

The invention discloses a preparation method of a composite rubber cable sheath material with low temperature resistance and tensile resistance. The invention introduces active carbon-carbon double bond on the surface of inorganic filler through silane coupling agent, and the modified inorganic filler is used and the epoxy resin is emulsified, so that the modified inorganic filler is coated with the epoxy resin, so that the inorganic filler is grafted and coated by the epoxy resin-silane coupling agent. The inorganic filler has good compatibility with premix in the mixing process and disperseseasily in premix so as to give full play to its functions of reinforcement, flame retardant, anti-aging and stability. The invention uses natural rubber, neoprene rubber and vinyl chloride resin to blend, so that the properties of various rubbers are mutually reinforced, and the mechanical properties and abrasion resistance of cable sheath materials are effectively improved; the preparation process provided by the invention is simple and convenient to realize large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of polymer functional materials, in particular to a preparation method of a low-temperature-resistant and tensile-resistant composite rubber cable sheath material. Background technique [0002] Cable sheath is an important part of protecting cables from external damage, and is usually made of polymer functional materials. The cable sheath must be able to protect the inner and outer conductors of the cable and the insulating layer from the influence of the environment, climate, acid, and hydrolysis. At present, the main materials of the cable sheath material are mainly chlorinated polyethylene, chlorosulfonated polyethylene, polyurethane, Polyethylene, various natural or synthetic rubbers, etc. Existing cable sheath materials generally use a single polymer material as the main material. [0003] In addition, in the actual production process, the cable sheath material will be used with a large amount of inor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L11/00C08L27/06C08K13/06C08K9/06C08K9/10C08K3/36C08K3/26C08K3/22H01B3/28
CPCC08K2003/2224C08K2003/265C08L7/00C08L2203/202C08L2205/035H01B3/28C08L11/00C08L27/06C08K13/06C08K9/06C08K9/10C08K3/36C08K3/26C08K3/22
Inventor 汪泽维
Owner 安庆市泽烨新材料技术推广服务有限公司
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