Refers to the general rubber in rubber cable is the original gum, such as natural, styrene butadiene, ethylene propylene and chlorine satin and so on the original gum collectively for rubber, also known as rubber. Rubber is a means to rubber as the main body, through the ratio of adding various auxiliary materials processing after rolling after the unvulcanized material in the finished product. Rubber sleeve is used as the insulation and jacket after curing of the finished cable of the general.

2, the composition of rubber

Rubber is combined by a few big system, in addition to the rubber itself and several large system auxiliary materials, such as filling filling system, curing system, protection system and plasticizer system, special substances to be added to the agent such as color, fragrance agent. 1), filling reinforcing system: fill up the strong purpose is improvement of rubber stretch should force and anti damage properties (such as tensile strength, tear strength and abrasion resistance, etc.), with talcum powder, calcium carbonate, clay, carbon black as the main raw material.

2), vulcanization system: vulcanization is coated insulating layer or sheath layer is a kind of processing method, the purpose is to let the auxiliary system of vulcanization system function, make permanent rubber crosslinking, increasing flexibility and reduce the plastic. The noun is the earliest for curing time is the so called sulfur vulcanized rubber crosslinking, still in use. Because sulfur molecules for copper conductor corrosion, so now choose curing system more with no sulfur or sulfur vulcanizing agent as main vulcanizing agent, and the selection of different rubber vulcanization of different types and share agent + accelerator to achieve the purpose rubber reasonable crosslink (sulfide).

3), the protection system: rubber cable in the process of storage, the use of often by various external factors (high temperature, low temperature, oxygen, ozone, repeated mechanical stress, etc.), the molecular structure of rubber change, which occurred in the appearance of sticky, brittle, cracking, loss of gloss and color, and physical and mechanical properties changes, gradually lost excellent use performance and loss of use value, this process is called aging. In order to prevent rubber premature aging, in rubber processing in the process of adding suitable and proper amount of antioxidant, against external factors for the effect of the rubber to help rubber cable in the storage and use of extended aging time.

4), plasticizing system: a rubber in adding a lot of filled fabric, increase its strength, hardness increased, and decreases the plasticity and fluidity, thus causing rubber increased difficulty in the later process. In order to enhance the plasticity and fluidity of rubber, in rubber processing in the process of adding an appropriate amount of a compound or a polymer, usually interactions and they are not rubber chemical reaction, and the rubber is mainly at elevated temperature swelling effect, so as to improve the plasticity and fluidity of rubber, ensure normal late processing.

5), special substances added: for the purpose of distinguishing the pigment from the chromatogram, to improve the fragrance of the rubber smell, etc..