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Ceramifiable silicone rubber thermal protection material and preparation method thereof

A heat protection material and silicone rubber technology, which is applied in the field of porcelain-able silicon rubber heat protection materials and its preparation, can solve the problems of affecting the effect of porcelain formation, difficult to balance mechanical properties and flame retardancy, and short fire resistance time, etc., to achieve mass production The effect of modernized production, excellent mechanical properties, and universal equipment

Inactive Publication Date: 2018-09-28
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Jion Meaney has developed an engine fire protection layer composed of silicone sealant and ceramic fiber, which does not burn through under the flame of Bunsen burner at 1093°C for 15 minutes, and has the advantages of solvent resistance, water erosion resistance and vibration resistance, but its existence The product is thicker, the ratio is large, the process is complex and the fire resistance time is short.
[0004] There are also relevant researches in China. CN 107057365 A discloses a kind of porcelain-resistant silicone rubber for flame-retardant fire-resistant cables and its preparation method. The material does not crack when it is shaken during the ablation process, and has good fire resistance, but there is flame spread. Not self-extinguishing after leaving the heat source, mechanical properties and flame retardancy are difficult to balance, etc.
CN 105670301 A discloses a vitrified refractory silicone rubber with excellent mechanical properties, the flame retardancy reaches V-0 level, but the residual rate of sintered ceramic quality is not high, which affects the effect of porcelain formation

Method used

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  • Ceramifiable silicone rubber thermal protection material and preparation method thereof
  • Ceramifiable silicone rubber thermal protection material and preparation method thereof
  • Ceramifiable silicone rubber thermal protection material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of ceramicable silicone rubber heat protection material, comprising the following raw material components (by mass parts):

[0039]

[0040] A kind of preparation method of porcelain silicon rubber thermal protection material, comprises the following steps:

[0041] (1.1) Take the halogen-free flame retardant, the first ceramic sintering aid, and deionized water respectively, use zirconia ball milling beads as the grinding medium, and introduce them into a vertical sand mill for grinding. The grinding time is 1 hour and the grinding speed is 1 hour. 50 rpm;

[0042] (1.2) Filtrate after grinding, use a 300-mesh filter screen for filtration, take the solid obtained from the filtration, dry and pulverize, and obtain the pretreated halogen-free flame retardant and the first ceramic sintering aid;

[0043] (2) Use a double-roller mill, adjust the roller distance to 2-4 mm, and add the base rubber after heating;

[0044] (3) Mixing: add reinforcing agent, platinu...

Embodiment 2

[0048] This embodiment is basically the same as Embodiment 1, the difference is that:

[0049] A kind of ceramicable silicone rubber heat protection material, comprising the following raw material components (by mass parts):

[0050]

[0051] A preparation method of a ceramicable silicone rubber thermal protection material is the same as that of Example 1, and will not be repeated here.

Embodiment 3

[0053] This embodiment is basically the same as Embodiment 1, the difference is that:

[0054] A kind of ceramicable silicone rubber heat protection material, comprising the following raw material components (by mass parts):

[0055]

[0056] A preparation method of a ceramicable silicone rubber thermal protection material is the same as that of Example 1, and will not be repeated here.

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Abstract

The invention discloses a ceramifiable silicone rubber thermal protection material and a preparation method thereof, and belongs to the field of thermal protection materials. The silicone rubber composite material comprises the following components in parts by weight: 100 parts of base rubber, 10-30 parts of a reinforcing agent, 5-20 parts of a halogen-free flame retardant, 0-25 parts of a first ceramic-forming sintering auxiliary agent, 0-40 parts of a second ceramic-forming sintering auxiliary agent, 0.01-10 parts of a platinum complex or a platinum compound (calculated as platinum), and 1-5parts of a constitution controller. According to the method disclosed by the invention, through cooperation of a combination of the two ceramic-forming sintering auxiliary agents, especially througha cooperation of a combination of a transition metal oxide with one or more selected from a layered filler and a porous filler, the ceramifiable silicone rubber thermal protection material with good flame retardance is obtained, and at the same time, the ceramifiable silicone rubber thermal protection material has excellent mechanical properties and a high mass residual rate of burnt ceramics.

Description

technical field [0001] The invention relates to a refractory material and a preparation method thereof, in particular to a vitrified silicon rubber thermal protection material and a preparation method thereof. Background technique [0002] Silicone rubber is a kind of polymer compound with semi-organic and semi-inorganic structure. It has the characteristics of both organic polymers and inorganic polymers. It has excellent properties such as high and low temperature resistance, aging resistance, and ozone resistance. It is widely used in the field of refractory materials. [0003] Porcelainable silicone rubber is a material made by adding various functional fillers, additives, flame retardant components and other components to silicone rubber. Porcelainable silicone rubber can form a hard ceramic body at extremely high temperature, which can block heat, have good fire resistance and fire prevention effect, and protect components from damage. There are many related foreign p...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K3/36C08K3/22C08K3/40C08K3/34C08K13/04C08K7/00C08K7/26
CPCC08L83/04C08K2003/2227C08K2003/2265C08K2201/014C08L2201/02C08L2205/025C08K3/36C08K3/22C08K3/40C08K3/34C08K13/04C08K7/00C08K7/26
Inventor 王金合邹雄施利毅毛琳韩景勃
Owner SHANGHAI UNIV
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