Transparent rubber products have bright colors and good elasticity, such as transparent rubber plates, transparent rubber soles, and wire and cable jackets, which are loved by various people. Transparent rubber products on the market are mostly made of natural rubber, butadiene rubber, styrene-butadiene rubber, isoprene rubber, such as the use of natural rubber to produce transparent rubber soles. Now many rubber product manufacturers use floor adhesive to replace natural rubber in order to reduce the raw material cost of transparent rubber products. Then what problems should be paid attention to when using floor-standing rubber to produce transparent rubber products?
1, floor rubber production of transparent rubber products
The main components of floor glue are the same as natural rubber. The main components are rubber hydrocarbons and a small amount of protein, fatty acid, sugar and ash. The difference is that the floor glue contains a small amount of wood chips, leaves and other impurities, so it can not be used to produce fineness of raw materials. Requires transparent rubber products or extruded rubber products such as transparent hoses, usually used to produce molded rubber products such as rubber soles and rubber sheets.
2, floor rubber production transparent rubber product formula design
When the floor rubber is used to produce transparent rubber products, the formula design of the transparent products will also affect the transparency of the rubber products, mainly in the type and amount of the compounding agent in the vulcanization system, the filler in the filling system and the type of the antioxidant.
1 vulcanization system
The vulcanization system of rubber products mainly includes vulcanizing agents, accelerators, active agents, and anti-scorching agents. The type and amount of vulcanizing agent in the vulcanization system will affect the transparency of transparent rubber products. It is best to use the floor rubber to produce transparent rubber products. The best use of sulfur is to control the amount of sulphur to less than 2 parts; accelerators and thiuram accelerators in accelerator products. It will also affect the transparency of rubber products produced by using floor glue as raw material. It is best to use accelerator M, accelerator H, and accelerator TMTS in combination; many rubber manufacturers use zinc oxide, but the light is covered by zinc oxide itself. Strong force, so the use of floor glue to produce transparent rubber products, it is best to reduce the amount of zinc oxide or add transparent zinc oxide.
At present, the vulcanization systems commonly used in the rubber products industry are not only sulfur vulcanization systems but also peroxide cure systems. However, since peroxide cured vulcanizates will remain in vulcanized compounds, do not use peroxides when using floor adhesives to produce transparent rubber products. (such as DCP) vulcanization.
2 filling system. In the production of rubber products, fillers can reduce the amount of rubber and reduce the raw material cost of rubber products. However, many fillers can affect the transparency of transparent rubber products and block light from passing through the rubber products. Therefore, they must be chosen so as not to affect the transparency of transparent rubber products. Fillers. When the floor rubber produces transparent rubber products, transparent white carbon black or basic magnesium carbonate can be selected. The fineness of white carbon is more than 800 mesh and the amount is controlled between 30-60 parts. According to the transparent rubber products, the tensile strength and resistance are The tear strength, hardness and other indicators need to be adjusted.
3 anti-aging system. Transparent rubber products have high requirements for color transparency and anti-oxidation performance, and the selection of anti-aging agents is very important. As with other compounding agent selection methods, first of all, the variety of antioxidants cannot affect the transparency of transparent rubber products produced from floor-level adhesives. Therefore, it is best to use anti-aging agent 264, anti-aging agent SP, and anti-aging anti-aging agent in the production of transparent rubber products for floor-standing adhesives. Agent MB, antioxidant BHT, the amount of control in 1 part or less.
In fact, when using floor-to-floor natural rubber to produce transparent rubber products, besides vulcanization system, filling system and anti-aging system, the choice of softener, dispersant, activator and rubber oil is also important, such as the transparent floor natural rubber transparent rubber product formula. Rubber oils must use colorless process oils, such as spindle oils; use sulfur stearic acid when vulcanized; TAA (thioacetamide) can improve the transparency of transparent rubber products and so on.
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