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    Common rubber additives in combination with classification and function

    release time:2018-02-06  viewed:3541次

    What are the rubber compounding agents?

    A chemical used to make a chain of rubber molecules crosslinked is called a vulcanizer.
    In the early days, sulfur was added to the raw rubber, and in the heat, the linear rubber molecules were interlinked into a mesh structure to increase the strength of the rubber and improve the performance of the elasticity and the flux.
    This process is often called vulcanization.
    Vulcanization is an important step in improving the quality of rubber products in rubber processing.
    Sulphur is the most widely used vulcanization agent.
    Some sulfur organics, peroxides, metal oxides and so on can also be vulcanized.
    These non-sulfur compounds are also known as vulcanizing agents.

    (2) the vulcanization accelerator vulcanization accelerator can be broken down into reactive molecules, when heated to sulfur with rubber molecules at low temperature crosslinking, quickly improve rubber sulfuration, shorten curing time, reducing the amount of sulfur, to improve the physical and mechanical properties of rubber.
    Vulcanization accelerator such as calcium oxide and magnesium oxide inorganic, organic promoter D (diphenyl guanidine), accelerator DM (diphenyl sulfide pian thiazole) and accelerator TMTD (4 methyl thiuram disulfide), etc.
    The more common use is organic promoters.
    Several accelerators are better mixed than used alone.

    The promoter is also called active agent.
    It can enhance the activation of vulcanization accelerator and improve the vulcanization effect of rubber.
    The commonly used promoter is zinc oxide and stearic acid.
    Qingdao Thai the st company environmental protection activity of vulcanization accelerator CR510, is a good way to promote the effect of sulfide, have good dispersion, good effect, low zinc environmental protection, under the microscopic dispersion has been adopted by many companies.


    The structure of rubber is destroyed, the mechanical properties of the products are reduced, and the service life is shortened. This phenomenon is called the aging of rubber.
    Light and heat promote oxidation and thus accelerate aging.
    In rubber, a substance that can resist and slow down the aging of rubber products is called an anti-aging agent.
    There are two kinds of anti-aging agents and chemical anti-aging agents.
    Physical anti-aging agents include paraffin wax, wax, wax and stearic acid.
    This kind of material can form thin film on the surface of rubber product, prevent oxygen and rubber molecule to have oxidation action, still can block the illuminate of light.
    Chemical antioxidants are more likely to react with oxygen than rubber.
    Chemical anti-aging agent is added in the adhesive, so that the oxygen entering the colloid will react with the anti-aging agent, reduce the contact of oxygen and rubber, and effectively delay the aging.
    Chemical preservatives are divided into amines, ketones, aldehydes, phenols, and other classes by molecular structure.
    It has anti-aging agent A (N- phenyl - alpha-naphthylamine), anti-aging agent D (N- phenyl - beta-naphthylamine), etc.

    It is used to improve the strength of vulcanized rubber and enhance the abrasion resistance, tear resistance and elasticity of rubber.
    Reinforcing filler is mainly carbon black.
    There are 52 kinds of carbon black used in rubber industry. It is an important raw material in the rubber industry.
    Qingdao tai Yang SAN chemical N98, N90, W95 and other functional additives, can significantly improve the abrasion resistance, tensile performance of rubber products, has a good reinforcing filler, and the effect of flame retardant N90.

    The main function of softener softener is to distribute the mixture evenly in rubber to reduce the energy consumption and shorten processing time.
    For example, the adhesion and adhesion of adhesive can be enhanced before vulcanization, which is favorable for pressing and pressing.
    Some softeners also give vulcanizates special functions, such as dibutyl phthalate, which can improve the cold resistance of rubber.
    The commonly used softeners are mechanical oil, petroleum jelly, paraffin oil, naphthenic oil, aromatic oil, asphalt, coal tar, stearic acid and rosin.

    It is a matter of coloring the rubber products.
    Inorganic colorants are inorganic pigments, white is best with titanium pigment, also can use high whiteness of kaolin, such as iron oxide red, red iron oxide, antimony, red yellow with chrome yellow, ultramarine blue, blue chrome oxide green, black with breeders aim and dispersed graphene masterbatch.
    Organic colorant is organic pigments and some dyes, this kind of colorant mostly organic compounds, barium salt or calcium salt, such as red lithol scarlet, yellow has han sand yellow G, green phthalein green, blue have phthalein cyanine.

    The foaming agent is a necessary agent for making sponge rubber or microporous rubber.
    The foaming agent is heated and decomposed in the vulcanization of rubber.
    The foaming agent used in the manufacture of sponge rubber is mainly sodium bicarbonate.
    The foaming agent used for making microporous rubber is foaming agent D, foaming agent P or foaming agent T.


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