A valve compound

Abstract

The invention discloses a rubber matrix for an inflating valve, which comprises the following components in percentage by weight: 20-40% of natural rubber, 5-8% of ethylene-propylene rubber, 5-7% of styrene-butadiene rubber, 35-45% of filler reinforcement system, 2-4% of antiaging system, 0.4-0.6% of cobalt salt, 4.5-4.7% of resorcinol-hexamethylenetetramine-white carbon black system, 4-6% of softening agent, 1-3% of vulcanization system and 2.4-2.6% of activator system. According to the invention, a part of rubber matrix in an inflating valve is replaced with natural rubber, thus greatly lowering the cost of the rubber matrix and providing better physical and mechanical properties for the rubber; the originally needless antiaging system is added and combined in the composition, and the antiaging system can overcome the decrease of static / dynamic ozone resistance and aging resistance of the rubber matrix for an inflating valve and can promote the bonding between the rubber matrix and a metal core at the same time; a small amount of cobalt salt and resorcinol-hexamethylenetetramine-white carbon black system are added in the composition, thereby increasing the bonding force of the rubber matrix; and a large amount of filler reinforcement agent is used in the composition, thereby ensuring the physical and mechanical properties of the rubber matrix, and further lowering the cost.

Description

technical field [0001] The invention relates to a rubber material, in particular to a valve rubber material. Background technique [0002] Many domestic manufacturers need to soak or paint a layer of adhesive on the metal core when producing valve rubber, so that the rubber and the metal core are firmly connected, so as to have practical performance, but coating the adhesive will cause There are a lot of toxic and harmful gases in the production site, which is very harmful to the human body, and most of the adhesives have a lot of volatile and flammable solvents. Poor ventilation can easily cause fires, and the production process is cumbersome, and the adhesive performance is affected. The influence of the mixture is greater, and the product quality is prone to large fluctuations. In addition, it is necessary to purchase special equipment or personnel for the glue brushing operation. After the glue brushing operation, special equipment is required for drying and baking, whic...

AI Technical Summary

Problems solved by technology

[0002] Many domestic manufacturers need to soak or paint a layer of adhesive on the metal core when producing valve rubber, so that the rubber and the metal core are firmly connected, so as to have practical performance, but coating the adhesive will cause There are a lot of toxic and harmful gases in the production site, which is very harmful to the human body, and most of the adhesives have a lot of volatile and flammable solvents. Poor ventilation can easily cause fires, and the production process is cumbersome, and the adhesive performance is affected. The influence of the mixture is greater, and the product quality is prone to large fluctuations. In addition, it is necessary to purchase special equipment or personnel for the glue brushing operation. After the glue brushing operation, special equipment is required for drying and baking, which takes up a large area And personnel, it also causes a large investment burden for the production enterprise, and the valve rubber is mostly produced by ethylene propylene rubber, the price of this type of rubber is relatively high, causing a large cost burden for the valve production enterprise

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