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High-strength flame-retardant composite rubber and preparation method thereof

A flame-retardant composite, high-strength technology, applied in the field of cable manufacturing, can solve the problems of high hygroscopicity and great influence on the mechanical properties of engineering plastics, and achieve the effects of good mechanical properties, high promotion and application value, and easy availability of raw materials

Inactive Publication Date: 2018-09-14
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also corresponding disadvantages. Due to the low degree of polymerization of the current process, it has relatively high hygroscopicity and has a great influence on the mechanical properties of engineering plastics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] In order to achieve the above object, the present invention provides a preparation method of a flame retardant composition, the preparation method comprising the following steps: (1) heating and mixing sodium hydrogen phosphate and montmorillonite in water, then adding magnesium chloride, heating to reflux, Obtain a gel-like mixture, and then adjust the pH to 8-13; (2) calcinate and pulverize the gel-like mixture to obtain phosphate-magnesium-doped modified montmorillonite; (3) modify the modified Montmorillonite, nano active agent, antimony trioxide and ammonium polyphosphate are mixed in proportion.

[0013] Through the above technical scheme, the flame retardant composition for cables provided by the present invention uses modified montmorillonite as the main ingredient, and is combined with flame retardant additives such as nano active agents, antimony trioxide and ammonium polyphosphate, and has high flame retardancy, The advantages of low price and low smoke in th...

preparation example 1

[0042] The preparation method of flame retardant composition, comprises the following steps:

[0043] (1) Heat and mix sodium hydrogen phosphate and montmorillonite in water at 60°C for 40 minutes, then add magnesium chloride, heat and reflux at 90°C to obtain a gel-like mixture, and then adjust the pH to 13 with sodium hydroxide; among them, phosphoric acid The mass ratio of sodium hydrogen, montmorillonite and magnesium chloride is 3:20:2; the mass ratio of water and montmorillonite is 15:1;

[0044] (2) calcining the gel-like mixture at 200° C. for 3 h, and pulverizing by ball milling to obtain phosphate-magnesium-doped modified montmorillonite;

[0045] (3) The modified montmorillonite, nano active agent, antimony trioxide and ammonium polyphosphate are mixed according to the mass ratio of 10:1:1.5:2;

[0046] Wherein, the nano-active agent is nano-alumina.

preparation example 2

[0048] The preparation method of flame retardant composition, comprises the following steps:

[0049] (1) Heat and mix sodium hydrogen phosphate and montmorillonite in water at 80°C for 20 minutes, then add magnesium chloride, heat and reflux at 120°C to obtain a gel-like mixture, and adjust the pH to 8 with sodium hydroxide; among them, phosphoric acid The mass ratio of sodium hydrogen, montmorillonite and magnesium chloride is 5:20:4; the mass ratio of water and montmorillonite is 50:1;

[0050] (2) calcining the gel-like mixture at 280° C. for 1.5 h, and pulverizing by ball milling to obtain phosphate-magnesium-doped modified montmorillonite;

[0051] (3) the modified montmorillonite, nano active agent, antimony trioxide and ammonium polyphosphate are mixed according to the mass ratio of 10:2:3:3;

[0052] Wherein, the nano active agent is nano zinc oxide particles.

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Abstract

The invention discloses high-strength flame-retardant composite rubber. A rubber composition used by the high-strength flame-retardant composite rubber takes modified montmorillonoid as a main material, and is matched with flame-retardant auxiliaries such as a nano active agent, antimonous oxide and ammonium polyphosphate, so that the high-strength flame-retardant composite rubber has the advantages of being high in flame resistance, low in price and low in smoke in a combustion process; fluororubber, the flame-retardant composition, molybdenum-series catalysts, an anti-ageing agent, polyvinylacetate, diethyl ethylphosphonate and a vulcanizing agent are mixed, so that the rubber with good low-smoke flame resistance can be prepared, and the prepared rubber further has good mechanical properties. The preparation method for the high-strength flame-retardant composite rubber is simple, adopts easily-available raw materials, and has a relatively high popularization and application value.

Description

technical field [0001] The invention relates to the field of cable manufacturing, in particular to a high-strength flame-retardant composite rubber and a preparation method thereof. Background technique [0002] Generally speaking, a cable is made of one or more mutually insulated conductors and an outer insulating layer, which transmits power or information from one place to another. With the rapid development of the economy, more and more places need cables to transmit power or other information, so there are stricter requirements for the manufacture of cables. The sheath of the cable is an indispensable structural part of the cable, which plays the role of protecting the cable, ensuring the safety of the cable, and insulating the cable core from water, air and other media to avoid leakage. Resin is the main material for the preparation of cable sheaths, so the properties of the resin directly determine the properties of the prepared cable sheaths. [0003] The classific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L31/04C08K13/06C08K9/02C08K3/34C08K3/22C08K3/32
CPCC08L27/12C08K2003/222C08K2003/2227C08K2003/2296C08K2003/323C08K2201/011C08L2201/02C08L31/04C08K13/06C08K9/02C08K3/346C08K3/22C08K3/2279C08K3/32
Inventor 米春海程奇李倩王宇
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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