Introduction to the hottest addition silicone rubb

2022-08-09
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Introduction to addition molding silicone rubber

1 Introduction to addition molding silicone rubber

users of two-component addition molding room temperature vulcanization silicon can choose products that are more suitable for their own equipment. Rubber has elastic silicone gel and silicon to ensure the normal operation of pressure testing machine. The former has lower strength and the latter has higher strength. Their vulcanization mechanism is

based on the addition reaction (hydrosilylation reaction) between vinyl (or propenyl) on the end group of silicone rubber and silyl on the crosslinker molecule

in this reaction, polysiloxane containing hydride function is used as crosslinking agent (vulcanizing agent), chloroplatinic acid or other soluble platinum compounds are used as catalysts

the vulcanization reaction is carried out at smothering temperature. No by-products are released. Since low molecular substances are not released during the chain crossing process, the addition room temperature vulcanized silicone rubber does not shrink during the sulfur

process. This kind of vulcanizate is non-toxic, has high mechanical strength, has excellent hydrolytic stability (even under high-pressure steam), good

low-pressure shrinkage deformation, low flammability, can be deeply vulcanized, and the vulcanization speed can be controlled by temperature. Therefore, it is a kind of

silicone rubber vigorously developed at home and abroad

addition RTV silicone rubber is generally packaged in two components: m and N: catalyst and silicone polymer containing vinyl groups

are used as one component; Hydrogen containing polysiloxane crosslinking agent is another component

high strength addition room temperature vulcanized silicone rubber is an excellent material for molding because of its low linear shrinkage and low molecular weight during vulcanization. In the machinery industry, it has been widely used in molding to cast epoxy resin, polyester resin, polyurethane, polystyrene, vinyl plastic, paraffin, low melting point alloy, coagulation, etc

taking advantage of the high fidelity, corrosion-free, simple molding process, easy demoulding and other characteristics of the addition molded temperature vulcanized silicone rubber, it is suitable for the reproduction of cultural relics and art crafts

2 about two-component silicone rubber

1. Can two-component silicone rubber be used as "label glue for clothing, shoes and hats"

2. Where is this two-component silicone rubber available? 1. From August 1, 2009, gb2626 ⑵ 006 "respiratory protective equipment self priming filter type particulate matter respirator" standard can be purchased? How much is the price

additive two-component silicone rubber can be used as all kinds of clothing signs, which is generally called sign glue or trademark glue by insiders. The mechanical strength requirements are as follows:

tensile strength: ≥ 5MPa; Tear strength ≥ 14KN/M; Elongation ≥ 200%; Hardness 40 ± 2 (above is the performance of silicone rubber made in Japan)

the cost of this kind of silicone rubber is higher than that of mold rubber and high temperature rubber, and the market price is also higher. However, its different vulcanization mechanism, rapid prototyping process materials often appear in the service site in large size, excellent processing performance and high precision of products are unmatched by other types of silicone rubber

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