Ngawi shengda packing company

Hebei silicone tube manufacturing plant small make up to tell you the difference between the hardness and elasticity of the silicone tube

Flexibility is the ability to instantly restore said simple point, hardness is the ability to force deformation for a long time. Silicone tube stretching stress and hardness is increased with the increase of crosslinking density to increase. Conventional vulcanization system can get high should set out and hardness. Over 80 degrees in addition to the rubber with carbon black reinforcing agent, such as the best but also add some resin, etc., can also add a hard agent, etc., that actually antiscorching agent benzoic acid surfactant diethylene glycol is hard work, 50 degrees to decline to fill up and lengthen the molding to reduce the Mooney to reduce the hardness of the other also dont know what is the good way. The change of hardness can rely on the increase the crosslink density, or in the extender agent or change the way to achieve processing oil, there are many ways, but just to see how the results. In short, silicone tube stretching stress and hardness are used in the characterization of vulcanizates stiffness very important indicators, both are needed to characterize the vulcanizates produce certain deformation force.

Stretch stress corresponding to the tensile deformation and hardness corresponds to the compression deformation. In the way of rubber elastic resilience in the characterization of deformation of rubber bearing, can recover the size of elastic deformation. Such as rubber molecular interactions that would interfere with molecular chain segment motion, then there is the force acting in rubber molecules, McDull we know part of it is used in some viscous resistance between molecules, comprehensive (said) to some other part of the molecular chain will be out of shape, they constitute the viscoelasticity of rubber. So we know rubber both a high elasticity and sticky.