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Calcium carbonate enhanced silicone rubber composite material and preparation method

A composite material, calcium carbonate technology, applied in the field of rubber materials, can solve the problems of poor bonding force between the matrix and the filler interface, and the low effect of strengthening and toughening rubber materials, so as to improve compatibility, yellowing resistance and corrosion resistance Sexuality and low cost effect

Inactive Publication Date: 2018-11-23
贺州钟山县双文碳酸钙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current method of modifying calcium carbonate, the main surface treatment agent is usually fatty acid or its salt. Although the dispersion and processing fluidity of the system have been improved, it is difficult for the rubber to effectively combine with the calcium carbonate filler, resulting in Poor interfacial bonding force with fillers, resulting in low reinforcing and toughening effect of rubber materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A calcium carbonate reinforced silicone rubber composite material, comprising the following parts by weight of raw materials: 100 parts of α,ω-dihydroxy polydimethylsiloxane, 15 parts of methyl vinyl silicone rubber, 50 parts of modified calcium carbonate, 8 parts of aramid fiber, 8 parts of white carbon black, 4 parts of crosslinking agent, 2.5 parts of stabilizer, 3 parts of silane coupling agent, 0.5 part of catalyst, 4 parts of processing aid and 1 part of 1010 antioxidant.

[0036] The modified calcium carbonate is modified through the following procedures:

[0037] (1) The limestone is added to the crusher for crushing and crushed to a particle size ≥20 mesh to obtain coarse calcium carbonate powder;

[0038] (2) Add the coarse calcium carbonate powder to the grinder, and then add the surface modifier composed of sodium butyl ricinoleate sulfate and sodium polysiloxane succinic acid amide sulfonate with a weight ratio of 3:1. The adding amount of the treatment agent is ...

Embodiment 2

[0047] A calcium carbonate reinforced silicone rubber composite material, comprising the following parts by weight: 100 parts of α,ω-dihydroxy polydimethylsiloxane, 25 parts of methyl vinyl silicone rubber, 45 parts of modified calcium carbonate, 5 parts of aramid fiber, 12 parts of white carbon black, 6 parts of crosslinking agent, 1.5 parts of stabilizer, 2 parts of rare earth coupling agent, catalyst

[0048] 0.8 parts, 3 parts of processing aids and 1 part of 1076 antioxidants.

[0049] The modified calcium carbonate is modified through the following procedures:

[0050] (1) The limestone is added to the crusher for crushing and crushed to a particle size ≥20 mesh to obtain coarse calcium carbonate powder;

[0051] (2) Add the coarse calcium carbonate powder to the grinder, and then add a surface modifier composed of sodium butyl ricinoleate sulfate and sodium polysiloxane succinic acid amide sulfonate in a weight ratio of 2:1. The adding amount of the treatment agent is 2% of th...

Embodiment 3

[0060] A calcium carbonate reinforced silicone rubber composite material, comprising the following parts by weight: 100 parts of α,ω-dihydroxy polydimethylsiloxane, 15 parts of methyl vinyl silicone rubber, 30 parts of modified calcium carbonate, 8 parts of aramid fiber, 5 parts of white carbon black, 8 parts of crosslinking agent, 2 parts of stabilizer, 3 parts of aluminum methacrylate-zirconium coupling agent, 1 part of catalyst, 5 parts of processing aid and 1.5 parts of CA antioxidant .

[0061] The modified calcium carbonate is modified through the following procedures:

[0062] (1) The limestone is added to the crusher for crushing and crushed to a particle size ≥20 mesh to obtain coarse calcium carbonate powder;

[0063] (2) Add the coarse calcium carbonate powder to the grinder, and then add the surface modifier composed of sodium butyl ricinoleate sulfate and sodium polysiloxane succinic acid amide sulfonate in a weight ratio of 4:1. The adding amount of the treatment agen...

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Abstract

The invention discloses a calcium carbonate enhanced silicone rubber composite material and preparation method. The calcium carbonate enhanced silicone rubber composite material comprises the following raw materials in parts by weight: 100 parts of alpha, omega-dihydroxy polydimethylsiloxane, 10-30 parts of methyl vinyl silicone rubber, 30-60 parts of modified calcium carbonate, 5-10 parts of aramid fiber, 5-15 parts of white carbon black, 4-8 parts of cross-linking agent, 1-3 parts of stabilizer, 2-4 parts of coupling reagent, 0.1-1 part of catalyst, 3-6 parts of processing agent and 0.5-1.5parts of antioxidant. According to the invention, the silicone rubber composite material prepared by adopting a unique raw material formula and the coordination of all the components has the advantages of high strength, high toughness, high impact resistance, high and low temperature resistance, high stability, ageing resistance, fire resistance, and the like, the processing process is simple, thecost is lower and the market prospect is wide.

Description

Technical field [0001] The invention relates to the technical field of rubber materials, in particular to a calcium carbonate reinforced silicone rubber composite material and a preparation method. Background technique [0002] Silicone rubber has excellent high and low temperature resistance, weather resistance, and electrical insulation properties, and is widely used in the construction industry, electronics industry, molds, automobiles, ships, aviation and other fields. Especially in the automotive field, it plays an important role in replacing the gaskets in the engine oil pan, gearbox, axle and other flat seals. As we all know, if most rubbers are not reinforced, their comprehensive properties cannot meet the application purpose. In order to improve the tensile strength, tear strength and abrasion resistance of rubber, improve processing technology and reduce costs, reinforcing fillers are usually added to rubber. [0003] Calcium carbonate is an important inorganic as a rei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08L77/10C08L5/08C08L33/08C08K13/06C08K9/04C08K9/06C08K3/26C08K3/36C08K5/20
CPCC08K2003/265C08L83/04C08L2201/08C08L2205/025C08L2205/035C08L2205/16C08L2312/00C08L77/10C08L5/08C08L33/08C08K13/06C08K9/04C08K9/08C08K3/26C08K3/36C08K5/20
Inventor 唐文易双
Owner 贺州钟山县双文碳酸钙新材料有限公司
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