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Ceramicized silicon rubber, preparation method and application

A technology of ceramicizing silicone rubber and silicone rubber, which is applied in rubber insulators, plastic/resin/wax insulators, organic insulators, etc., can solve the problems of falling off, brittle mica tapes, and high production costs, and achieve good flexibility and elasticity. , The effect of isolating the external flame and low production cost

Active Publication Date: 2013-03-13
常州市沃科科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, magnesia mineral refractory insulated cables have the following disadvantages in manufacturing and application: first, the equipment cost is high, and magnesia mineral refractory insulated cables require special production and processing equipment, which is expensive and the equipment cost is high; second, the production cost High, because the outer sheath of the magnesia mineral refractory insulated cable is all copper, the price of copper is high, making the production cost higher, and it is limited to a certain extent in terms of practical application; Laying, installation and use are inconvenient, because copper sheathed magnesium oxide mineral fire-resistant insulated cables have special requirements in the process of production, processing, transportation, line laying, installation and use, such as the production and processing of magnesium oxide mineral fire-resistant insulated cables cannot be compared with polymer materials Such convenient processing, cumbersome and complicated laying and installation, high cost of raw materials, it is difficult to popularize and apply on a large scale, especially in civil buildings, etc., until now it has not been widely and universally used
[0004] In the production process, the fire-resistant cable wrapped with mica tape needs to be wound in multiple layers. Due to the limitation of process conditions, lap joint defects often occur at the lap joints. The fire-resistant effect is reduced, and the circuit is short-circuited, making it difficult to ensure the safety and smoothness of power and communication in case of fire.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0071] The ceramic silicone rubber of the present invention has two kinds of preparation methods, and the first preparation method comprises:

[0072] ① Knead 60-100 parts of silicone rubber, 20-100 parts of silicon dioxide, 1-20 parts of silicone oil, and 0.1-10 parts of coupling agent in a kneader at a temperature not higher than 100 ° C;

[0073] ② Vacuum the kneader for 60 minutes, the vacuum degree can be -0.065Mpa, and the temperature is kept at no higher than 165°C;

[0074] ③ Add 20-120 parts of vitrified powder into the kneader to knead the vitrified powder with the kneaded silicone rubber, silicon dioxide, silicone oil and coupling agent evenly to form a lump of vitrified rubber;

[0075] ④ Move the lumpy ceramic rubber out of the kneader and cool it down;

[0076] ⑤ kneading the cooled lump-like ceramic rubber on an open mill to cut the ceramic rubber into flakes from the dough;

[0077] ⑥Filter the flaky ceramic rubber into strips on a rubber filter machine to ob...

Embodiment approach 1

[0094] Embodiment 1: Take 60 parts of dimethyl silicone rubber (MQ), 20 parts of silicon dioxide, 1 part of methyl silicone oil, 0.1 part of KH560, 20 parts of silicate glass powder and 1 part of 2,5-dimethyl- 2,5-bis(tert-butylperoxy)hexane, according to the first preparation method of ceramic silicone rubber above, ceramic silicone rubber is prepared, and when ceramic silicone rubber is vulcanized, add 1 part of 2,5 -Dimethyl-2,5-bis(tert-butylperoxy)hexane.

Embodiment approach 2

[0095] Embodiment 2: Take 100 parts of methylphenyl vinyl silicone rubber (PVMQ), 100 parts of silicon dioxide, 20 parts of hydroxyl silicone oil, 10 parts of OL~T671, 120 parts of borate glass powder and 5 parts of diisoperoxide Propylbenzene (commonly known as DCP), according to the second preparation method of ceramic silicone rubber, ceramic silicone rubber is obtained, and 5 parts of dicumyl peroxide are added when the ceramic silicone rubber is vulcanized and molded.

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PUM

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Abstract

The invention relates to a ceramicized silicon rubber, which comprises 1)60-100 parts of silicon rubber, wherein a general formula is (RnSiO4-n / 2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 2)20-100 parts of silicon dioxide; 3)1-20 parts of silicone oil, wherein the general formula is (RnSiO4-n / 2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 4)0.1-10 parts of coupling agent and 5)20-120 parts of ceramicized powder. The above raw materials are mixed in a kneader and then vacuumized, the ceramicized powder and the coupling agent are added in the kneader and then uniformly mixed to form the bulk ceramicized rubber, and the ceramicized rubber is performed roll mixing and filtered to obtain the ceramicized silicon rubber. The ceramicized silicon rubber has the advantages that the processing is easy, the production cost is low, the ceramicized silicon rubber can be performed ablation to a ceramic shell, and can protect the burned objects from damaging.

Description

technical field [0001] The invention relates to a kind of rubber, in particular to a ceramicized silicon rubber with fireproof function. Background technique [0002] At present, most fire-resistant and flame-retardant cables use magnesium oxide mineral insulation or mica tape winding to achieve fire-resistant functions. [0003] However, magnesia mineral refractory insulated cables have the following disadvantages in manufacturing and application: first, the equipment cost is high, and magnesia mineral refractory insulated cables require special production and processing equipment, which is expensive and the equipment cost is high; second, the production cost High, because the outer sheath of the magnesia mineral refractory insulated cable is all copper, the price of copper is high, making the production cost higher, and it is limited to a certain extent in terms of practical application; Laying, installation and use are inconvenient, because copper sheathed magnesium oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08L83/06C08K13/02C08K3/36C08K3/34C08K3/38C08K3/40C08K5/14C08J9/10H01B7/02H01B7/295H01B3/46C09K21/14E06B5/16
CPCC08K5/17C08K3/36H01B3/46C08K5/5415C08L83/04C08K3/38H01B3/28C08K3/26C08G77/20C08K3/34C08K5/14C08L83/00
Inventor 康树峰赵源刘卫东
Owner 常州市沃科科技有限公司
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