About us  Products   News Technical Categories Other raw  Online   Jobs     Contact us

Address: :Dongguan city, Guangdong Province,CHINA

Contact: IRIS SU







Web site: www.wellna.net

  Your current position:WELLNA RUBBER&PLASITC CO.LTD >> News >> Dynamic news >> Several kinds of rubber mixing characteristics


Several kinds of rubber mixing characteristics

1: natural rubber

In the mechanical kneading, natural rubber plastic increases very fast, low calorific value than synthetic rubber, complexing agent is easy to disperse, and sequence of addition on compounding agent dispersion extent unlike synthetic rubber as significant, but the mixing time is long too refined, on properties of rubber compound ratio of synthetic rubber in. Use of natural rubber mixing mill, roller temperature at50 ℃ -60 ℃, the front roll after5 ℃ higher than the roller, mixer when the use of a mixing method. Rubber discharging temperature lower than150 ℃.

2: styrene butadiene rubber

Ding Ben rubber mixing heating, fast temperature rise, thus mixing temperature lower than natural rubber. Compounding agent in SBR is difficult to mix dispersion, the response of the mixing time than natural rubber long. By mixing mill, the front roller temperature than after low temperature of 5 ℃ -10 ℃roller. Need to increase the number and thin through additional processing, in order to contribute to the complexing agent is uniformly dispersed. By mixing the two stage mixing, capacity should be smaller, prevent the generation of gel, rubber discharging temperature lower than130 ℃.

3: butadiene rubber

Butadiene rubber in mixing machine mixing not easily synthesis, and easily detachable roller. In order to make the rubber roll, the small roller distance, low temperature (40 ℃ -50 ℃) mixing. Compounding agent in butadiene rubber dispersion than in natural rubber slow. In order to make the agent with better uniformly dispersed, require additional processing. With a Banbury, capacity can be increased by 10%, temperature of the roller can be slightly high, to help with dispersant, discharge temperature is at 130 ℃ -140 ℃. Carbon black content or high structure carbon black fine particles, must adopt the two stage mixing can be distributed evenly, also can use inverse mixed mixing.

4: chloroprene rubber

Chloroprene rubber process performance changes with the temperature is obvious, in a mixing machine mixing, temperature is at 40 ℃ -50 ℃temperature range, high sticky roller. Rubber kneading, roller spacing to gradually by the major small, lest the gluing roller. Mixing with magnesium oxide should first, to scorch, finally adding zinc oxide. Mixer confidential tried, can adopt two stage mixing method, try to reduce the discharge temperature, not to exceed 110 ℃, to scorch. Zinc oxide in the second stage mixing when the tablet press joining.

  Home Abotus Product  News   Technical   Categories  Online Jobs Contact us  

Address:Dong guan city,Guang dong province,China phone:0769-22402993 Cell:13416659506

WELLNA RUBBER&PLASITC CO.LTD Back-stage management