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Analysis of the misunderstanding of the hardness and elasticity of silicone rubber tube
Novice always do not understand the difference between the hardness and elasticity of silicone rubber hose, always feel that these two properties are relevant, there is contact.
It is said that the simple point of elasticity is the ability of the moment to recover, the hardness is a long time to force deformation.
Silicone tube tensile stress and hardness with increasing crosslink density to increase. The traditional curing system can obtain higher fixed and extended stress.
And hardness. 80 degrees above the rubber material in addition to the addition of carbon black and other reinforcing agent is better than the best also add a little resin, etc., but also add a little more hard, etc.
In fact, for the antiscorching agent benzoic acid surfactant two glycol has hardened, below 50 degrees down to refuel and lengthen the plastication to lower Mooney
To reduce the hardness of other really do not know what a good way.
There are a lot of ways to change the way of the filling agent or the change of processing oil, but it is how to see the results.
In short, silica gel tube stretch stress and hardness are used in the characterization of vulcanizates stiffness of very important indicators, the two are enable characterization
The force required to produce a certain deformation of the vulcanized rubber. The tensile stress corresponds to the tensile deformation, and the hardness corresponds to the compressive deformation. Come again
The elastic deformation of rubber is the elastic deformation of the rubber. Like rubber molecules
This can interfere with the movement of the molecular chain, and then there is the force acting on the rubber molecules.
A part of it is used to overcome some of the viscosity of the molecules, and the other part of the molecule chain
Deformation, they constitute the viscoelasticity of rubber. So we know that there is a high elasticity of rubber, and sticky.
This paper is from Shenzhen,, id=556?
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