Basic understanding of rubber
Rubber is a high elastic polymer material，due to rubber has high elasticity that other materials do not have, it is also called an elastomer.
Its basic characteristics are as follows:
(1) with rubbery elasticity.
(2) with viscoelastic.
(3) has the effect of shock absorption and buffering.
(4) Temperature dependent large.
(5) with electrical insulation.
(6) There is aging phenomenon.
(7) must be vulcanized.
(8) must be added with the coordination agent.
(9) small specific gravity, low hardness, good softness, poor air permeability.
Three basic processes in the production of rubber raw materials
1. Plasticizing: plasticizing is to cut off the raw rubber, and plasticize and homogenize the raw rubber to help the mixing and refining operation of the coordination agent. The effect is to improve the dispersion of drugs, prevent the production of friction heat in the operation, and the phenomenon of burning rubber, and then change the processability of rubber .
2. Mixing: mixing is to evenly mix the compound drugs into the raw rubber completed by plasticizing, and the quality of mixing directly affects the quality of the products. If drug dispersion is uneven, molecular structure is not fully crosslinked, rubber will not achieve the desired physical properties.
3. Pressing out: pressing out the raw rubber completed by mixing, the excess air contained in the rubber will be pressed out and the required thickness will be completed to facilitate the shape fixing operation in the mold.
Rubber forming
The molecular structure of raw rubber is an elastomer with unsaturated long bond. So it is necessary to have appropriate drug additives and external environmental factors (such as time, temperature, pressure, etc.) in the molding elements, in order to destroy its unsaturated bond, recombine them into saturated bond, and completely force out the contained air with the aid of vacuum. In this way, characteristics of formed rubber be brought into play. If there is any defect in the molding process (such as wrong formula, insufficient time, improper temperature, etc.), it will cause the loss of physical properties, the release of excess drugs, deformation, accelerated aging, and various serious adverse phenomena .
Back
Its basic characteristics are as follows:
(1) with rubbery elasticity.
(2) with viscoelastic.
(3) has the effect of shock absorption and buffering.
(4) Temperature dependent large.
(5) with electrical insulation.
(6) There is aging phenomenon.
(7) must be vulcanized.
(8) must be added with the coordination agent.
(9) small specific gravity, low hardness, good softness, poor air permeability.
Three basic processes in the production of rubber raw materials
1. Plasticizing: plasticizing is to cut off the raw rubber, and plasticize and homogenize the raw rubber to help the mixing and refining operation of the coordination agent. The effect is to improve the dispersion of drugs, prevent the production of friction heat in the operation, and the phenomenon of burning rubber, and then change the processability of rubber .
2. Mixing: mixing is to evenly mix the compound drugs into the raw rubber completed by plasticizing, and the quality of mixing directly affects the quality of the products. If drug dispersion is uneven, molecular structure is not fully crosslinked, rubber will not achieve the desired physical properties.
3. Pressing out: pressing out the raw rubber completed by mixing, the excess air contained in the rubber will be pressed out and the required thickness will be completed to facilitate the shape fixing operation in the mold.
Rubber forming
The molecular structure of raw rubber is an elastomer with unsaturated long bond. So it is necessary to have appropriate drug additives and external environmental factors (such as time, temperature, pressure, etc.) in the molding elements, in order to destroy its unsaturated bond, recombine them into saturated bond, and completely force out the contained air with the aid of vacuum. In this way, characteristics of formed rubber be brought into play. If there is any defect in the molding process (such as wrong formula, insufficient time, improper temperature, etc.), it will cause the loss of physical properties, the release of excess drugs, deformation, accelerated aging, and various serious adverse phenomena .