Silicone rubber fireproof sealing material and preparation method thereof

Abstract

The invention relates to a silicone rubber fireproof sealing material and a preparation method thereof. The silicone rubber fireproof sealing material is characterized by consisting of a component A and a component B; when in use, the component A is mixed with the component B according to a weight ratio of 1:1 so as to obtain the silicone rubber fireproof sealing material; the component A is made from raw materials including a substrate, fireproof fillings, reinforced materials, a crosslinking agent and an adhesive; the portions by weight of each raw material of the component A are as follows: 100 portions of the substrate, 100 to 300 portions of the fireproof fillings, 50 to 100 portions of the reinforced materials, 3 to 8 portions of the crosslinking agent and 1 to 100 portions of the adhesive; the component B is made from raw materials including a substrate, fireproof fillings, reinforced materials, a catalyst and an adhesive; the portions by weight of each raw material of the component B are as follows: 100 portions of the substrate, 100 to 300 portions of the fireproof fillings, 50 to 100 portions of the reinforced materials, 0.2 to 0.4 portion of the catalyst and 1 to 100 portions of the adhesive; and the substrate is polydimethylsiloxane. The silicone rubber fireproof sealing material has good flame-retardant and fireproof effects.

Description

technical field

[0001] The invention relates to a silicone rubber fireproof sealing material and a preparation method thereof. Background technique

[0002] Due to the requirements of special high-altitude environments, aircraft rubber is required to have high performance such as radiation resistance, ozone resistance, cold resistance, aging resistance, light weight and flame retardancy. Silicone rubber is a polymer compound with Si-O-Si bond as the main chain and side groups such as methyl, vinyl, phenyl and other organic groups. Due to the special structure, it has excellent high temperature resistance and low temperature resistance, excellent electrical insulation and chemical stability, good aging resistance, outstanding surface activity, hydrophobic moisture resistance and physiological inertia, etc., widely used in aircraft manufacturing and other fields. Although ordinary silicone rubber materials have been widely used in the aircraft manufacturing industry, there a...

Examples

Embodiment 1

[0034] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0035] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 300 parts of fireproof filler (100 parts of hydrotalcite, 100 parts of montmorillonite, 100 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 30 parts, carbon fiber 30 parts and glass mat 40 parts] 100 parts, crosslinking agent (tetramethoxysilane) 8 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 100 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0036] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[00...

Embodiment 2

[0042] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0043] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 240 parts of fireproof filler (80 parts of hydrotalcite, 80 parts of montmorillonite, 80 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 20 parts, carbon fiber 20 parts and glass mat 40 parts] 80 parts, crosslinking agent (tetramethoxysilane) 8 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 45 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0044] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[0045] 2...

Embodiment 3

[0050] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0051] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 210 parts of fireproof filler (70 parts of hydrotalcite, 70 parts of montmorillonite, 70 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 20 parts, carbon fiber 20 parts and glass mat 30 parts] 70 parts, crosslinking agent (tetramethoxysilane) 7 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 40 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0052] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[0053] 2...

technical field

[0001] The invention relates to a silicone rubber fireproof sealing material and a preparation method thereof. Background technique

[0002] Due to the requirements of special high-altitude environments, aircraft rubber is required to have high performance such as radiation resistance, ozone resistance, cold resistance, aging resistance, light weight and flame retardancy. Silicone rubber is a polymer compound with Si-O-Si bond as the main chain and side groups such as methyl, vinyl, phenyl and other organic groups. Due to the special structure, it has excellent high temperature resistance and low temperature resistance, excellent electrical insulation and chemical stability, good aging resistance, outstanding surface activity, hydrophobic moisture resistance and physiological inertia, etc., widely used in aircraft manufacturing and other fields. Although ordinary silicone rubber materials have been widely used in the aircraft manufacturing industry, there a...

Examples

Embodiment 1

[0034] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0035] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 300 parts of fireproof filler (100 parts of hydrotalcite, 100 parts of montmorillonite, 100 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 30 parts, carbon fiber 30 parts and glass mat 40 parts] 100 parts, crosslinking agent (tetramethoxysilane) 8 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 100 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0036] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[00...

Embodiment 2

[0042] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0043] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 240 parts of fireproof filler (80 parts of hydrotalcite, 80 parts of montmorillonite, 80 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 20 parts, carbon fiber 20 parts and glass mat 40 parts] 80 parts, crosslinking agent (tetramethoxysilane) 8 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 45 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0044] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[0045] 2...

Embodiment 3

[0050] The preparation method of silicone rubber fireproof sealing material, it comprises the steps:

[0051] 1) Preparation of component A: according to the parts by weight of each raw material: 100 parts of matrix, 210 parts of fireproof filler (70 parts of hydrotalcite, 70 parts of montmorillonite, 70 parts of expanded graphite), reinforcing material [alkali-free fiber Short fiber (below 70mm) 20 parts, carbon fiber 20 parts and glass mat 30 parts] 70 parts, crosslinking agent (tetramethoxysilane) 7 parts, adhesive [polymer phenolic resin (thermosetting phenolic resin)] 40 parts Parts, select matrix, fireproof filler, reinforcing material, crosslinking agent and adhesive raw materials; the matrix is ​​polydimethylsiloxane;

[0052] Mix polydimethylsiloxane with reinforcing material and fireproof filler evenly, then add adhesive and crosslinking agent, mix at room temperature, put it into a mold, and vulcanize at room temperature for 4 days to obtain component A;

[0053] 2...