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Addition type flame-retardant silicone rubber and preparation method thereof

A silicone rubber and addition molding technology, applied in the rubber field, can solve problems such as restricting the development of liquid silicone rubber, and achieve the effects of non-toxic and environmentally friendly raw materials, reduced flammability, and simple preparation methods

Pending Publication Date: 2021-11-30
广东爱沃硅胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a large number of methyl groups linked to the main chain structure of liquid silicone rubber, which makes it have a certain flammability, which limits the development of liquid silicone rubber in fields with special requirements for flame retardancy.

Method used

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  • Addition type flame-retardant silicone rubber and preparation method thereof
  • Addition type flame-retardant silicone rubber and preparation method thereof
  • Addition type flame-retardant silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this example, a kind of addition-type flame-retardant silicone rubber is prepared, wherein, in terms of parts by mass, the composition of the flame-retardant base rubber is shown in Table 1:

[0032] Table 1 Raw material composition of flame retardant base rubber

[0033]

[0034]

[0035] The composition of component A glue is: 100 parts of flame retardant base glue, 0.75 parts of catalyst;

[0036] The composition of component B glue is: 100 parts of flame retardant base rubber, 6 parts of hydrogen-containing silicone oil, and 0.35 parts of inhibitor.

Embodiment 2

[0038] In this example, a kind of addition-type flame-retardant silicone rubber is prepared, wherein, in terms of parts by mass, the composition of the flame-retardant base rubber is shown in Table 2:

[0039] Table 2 Raw material composition of flame retardant base rubber

[0040] raw material parts by mass Liquid 40 degree base glue 80 Vinyl silicone oil, 100000CP 20 Aluminum hydroxide 45 talcum powder 20 Zinc borate 10 cryolite 4 Sodium silicate 6

[0041] The composition of component A glue is: 100 parts of flame retardant base glue, 0.92 parts of catalyst;

[0042] The composition of component B glue is: 100 parts of flame retardant base rubber, 6 parts of hydrogen-containing silicone oil, and 0.45 parts of inhibitor.

Embodiment 3

[0044] In this example, an addition-type flame-retardant silicone rubber is prepared, wherein, in parts by mass, the composition of the flame-retardant base rubber is shown in Table 3:

[0045] Table 3 Raw material composition of flame retardant base rubber

[0046] raw material parts by mass Liquid 40 degree base glue 80 Vinyl silicone oil, 100000CP 20 Aluminum hydroxide 45 talcum powder 20 Zinc borate 10 cryolite 4 Sodium silicate 8

[0047] The composition of component A glue is: 100 parts of flame retardant base glue, 0.92 parts of catalyst;

[0048] The composition of component B glue is: 100 parts of flame retardant base rubber, 6 parts of hydrogen-containing silicone oil, and 0.45 parts of inhibitor.

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Abstract

The invention provides addition type flame-retardant silicone rubber and a preparation method thereof. According to the addition type flame-retardant silicone rubber, liquid base rubber serves as a matrix, aluminum hydroxide serves as a main flame retardant, talcum powder and zinc borate serve as auxiliary flame retardants, meanwhile, cryolite and sodium silicate are used as auxiliary materials, the flame-retardant performance is excellent, the residual flame and afterglow time is short, and the retention time in a fire disaster is long. The preparation method of the addition type flame-retardant silicone rubber is simple, and the raw materials are non-toxic and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of rubber, in particular to an addition-type flame-retardant silicone rubber and a preparation method thereof. Background technique [0002] Liquid silicone rubber is obtained by crosslinking and curing vinyl-containing polysiloxane and silicon hydrogen-containing polysiloxane through hydrosilylation addition reaction. The Si-O-Si bond is the basic bond type that constitutes the silicone rubber skeleton. . The special structure and properties of Si-O bonds make liquid silicone rubber have excellent thermal stability, insulation, weather resistance and physiological inertness, and are widely used in aerospace, electric power, medical and health and general daily use industries. Compared with condensation-type liquid silicone rubber, addition-type liquid silicone rubber has the advantages of no by-products, no heat release, minimal shrinkage, no corrosion, and deep vulcanization during the vulcanization proce...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/07C08K3/00C08K3/22C08K3/34C08K3/38C08K3/16C08L83/05
CPCC08L83/04C08L2201/02C08K2003/2227C08K2003/387C08K3/00C08K3/22C08K3/34C08K3/38C08K3/16Y02E60/10
Inventor 林叶鹏
Owner 广东爱沃硅胶科技有限公司
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