Talking about rubber products, in people's vision, always leave a black impression, such as rubber products in the largest consumption of various types of tires, always black. Some people think black can resist dirt. And generally engaged in the rubber industry will also be because of the tire black, from the reinforcement and filling perspective to consider, and add carbon black. Do you know the tire carbon black has a special role, that is, it gives the tire in the outdoor driving, has the special function of uv radiation resistance, outdoor aging resistance and masking light, is difficult to replace other filling reinforcing agent. But people learned from practice, and consumption of rubber products, need to be bright and colorful, in addition to beautify the product, improve the quality of appearance, select the appropriate shading methods and colorants, also can significantly improve the weatherability of rubber products, heat resistance, corrosion resistance, electrical properties, optical properties and the recognition of rubber parts tooling. Therefore, color and colorant, is an indispensable system engineering in the rubber industry.

1. Beautification effect of improving commodity value: We live in the colorful and personalized modern society, and increasingly pursue the enjoyment of beauty, so do rubber products. Especially daily necessities, such as rubber vulcanized shoes, food utensils, toys. Rubber gloves, balloons, all kinds of rubber accessories, from the perspective of industrial design, with the first impression of the appearance of the color of the product, to enhance the value of the commodity, to create a beautiful sense of artistic products.

2, classification identification and warning function: rubber products, especially according to the important position installed in the equipment, such as sealing parts, dust cover, diaphragm, O ring, and compound rubber hose layer, special special rubber pad, need to be marked in different colors, easy to distinguish and maintenance. Some of the rubber coated cable and wire, in accordance with the Munsell color standard decograph color identification, to professional wiring and maintenance to provide warning.

3, improve the light resistance and weather resistance of rubber products: rubber products need to have a certain service life, to reflect the value. Especially in outdoor conditions, to withstand light, rain, and the atmosphere of acid and alkali pollution particles test. Such as in the formulation design to consider the addition of some light - and weather-resistant adhesive. Such as colorant carbon black, can receive efficient, inexpensive light shielding effect. As yet there is no uv absorber which has the luminous stability of the colorant charcoal black.

4, enhance the conductivity of rubber, it is well known that nonpolar rubber electrical conductivity is very poor, can say insulation is the characteristic of it, even the polarity rubber, its conductivity also cannot meet the demand of different conductive, and join the stain with the function of conductive carbon black, such as acetylene carbon black, and can make up for the inadequacy of conductive rubber performance.

5, the heat resistance of some colorants, some inorganic colorants added to rubber, but also enhance the heat resistance of products, such as iron oxide red powder, rutile titanium dioxide, chromium oxide pigment, cadmium red, cadmium orange, etc., commonly used as a heat resistant coordinating agent, added to the rubber.