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Composition for forming flame retardant silicone rubber and flame retardant silicone rubber

A composition and technology of silicone rubber, applied in the field of flame retardant silicone rubber, can solve problems such as poor flame retardant performance, and achieve the effects of protecting from damage, isolating external flames, enhancing strength and structural integrity

Pending Publication Date: 2019-07-02
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a composition for forming flame-retardant silicone rubber and flame-retardant silicone rubber to solve the problem of poor flame-retardant performance of existing silicone rubber

Method used

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  • Composition for forming flame retardant silicone rubber and flame retardant silicone rubber
  • Composition for forming flame retardant silicone rubber and flame retardant silicone rubber

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Experimental program
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Effect test

preparation example Construction

[0030] The method for preparing the flame-retardant silicone rubber from the above composition can adopt the methods commonly used in the art. Preferably, the following method is used for preparation:

[0031] The above composition is kneaded, thinned, and sheeted to obtain a porcelain silicone rubber composition; after the above porcelain silicone rubber composition is cooled at room temperature for 12 hours, it is vulcanized at 180°C and 10MPa for 45 minutes, and then Place it in an oven at 200°C for 4 hours to keep the desired flame-retardant silicone rubber composite material.

[0032] Another aspect of the present application also provides a flame-retardant silicone rubber, which is prepared by using the above-mentioned composition.

[0033] In the above-mentioned composition provided by the present application, under the action of the flux, the vitrified powder can be melted at a lower combustion temperature, and the silicon dioxide powder formed after the combustion of...

Embodiment 1

[0039] 100g silicone rubber, 25g porcelain powder (25g calcined kaolin), 50g flux, 25g chopped fiber (glass fiber), 30g flame retardant (Al(OH) 3 ), 20g of fumed white carbon black and 2g of vulcanizing agent (dicumyl peroxide) were added to the open mill and mixed evenly, thinly passed, and released into sheets to obtain a vitrified silicone rubber composition.

[0040] Cool the above porcelainable silicone rubber composition at room temperature for 12 hours, vulcanize it at 180°C and 10MPa for 45 minutes, and then place it in an oven at 200°C for 4 hours to obtain the required flame-retardant silicone rubber composite material .

[0041] The above flame-retardant silicone rubber composite material was divided into four samples, and ablated in a muffle furnace at 600°C, 800°C, 1000°C, and 1200°C for 20 minutes to obtain ablation products. A performance test was performed on the above-mentioned ablation products.

Embodiment 2

[0043] 100g silicone rubber, 50g porcelain powder (25g kaolin, 25 mica powder), 10g flux, 40g chopped fiber (glass fiber), 10g flame retardant (Al(OH) 3 ), 15g of fumed white carbon black and 2g of vulcanizing agent (double two five) were added to the open mill and mixed evenly, thinned, and sliced ​​to obtain a porcelain silicone rubber composition.

[0044] Cool the above porcelainable silicone rubber composition at room temperature for 12 hours, vulcanize it at 180°C and 10MPa for 45 minutes, and then place it in an oven at 200°C for 4 hours to obtain the required flame-retardant silicone rubber composite material .

[0045] The above flame-retardant silicone rubber composite material was divided into four samples, and ablated in a muffle furnace at 600°C, 800°C, 1000°C, and 1200°C for 20 minutes to obtain ablation products. A performance test was performed on the above-mentioned ablation products.

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Abstract

The present invention provides a composition for forming a flame retardant silicone rubber and a flame retardant silicone rubber. The composition comprises silicone rubber, porcelain powder, chopped fiber and flux. The diameter of the chopped fiber is 5-12 Mum and the length is 1-9mm. Under the action of flux, the porcelain powder can be fused at a lower combustion temperature, and the silicon dioxide powder formed after the combustion of the silicon rubber can participate in the fusing process, thereby forming a ceramics protective case with a higher strength on the surface of the flame-retardant silicon rubber, thereby isolating the external flame and protecting the internal material from being damaged. On the other hand, the chopped fiber can play a skeleton role in the interior of theflame retardant silicone rubber, which is beneficial to enhance the strength and structural integrity of the combustion products. On this basis, the flame-retardant silicone rubber can be made to haveexcellent flame-retardant properties through the combination of the chopped fiber, the porcelain powder, the silicone rubber and the flux.

Description

technical field [0001] The invention relates to fireproof materials, in particular to a composition for forming flame-retardant silicone rubber and flame-retardant silicone rubber. Background technique [0002] In a fire, the protection of personal and property safety is one of the key issues that people pay attention to nowadays. The frequent occurrence of fire problems in recent years has also caused scientific researchers to invest more research and reflection on fireproof materials. For example, in terms of building materials, the main measure to reduce the damage caused by fire is to prevent the further spread of the flame as soon as possible, and at the same time protect the communication equipment from damage, maintain normal use functions and the smooth flow of safe passages. At this time, fire-resistant buildings and fire-resistant cable materials have become the key issues to reduce fire losses. [0003] Non-toxic, harmless, and heat-resistant silicone rubber mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K13/04C08K3/34C08K7/14C08K7/10C08K3/22
CPCC08K13/04C08K3/346C08K3/34C08K7/14C08K7/10C08K3/22C08L2201/02C08K2201/003C08K2201/004C08K2201/014C08K2003/2227C08L83/04
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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