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The problem of transparent silicone tube
Do silicon hose transparent formula, using sulfur vulcanization system, and the filler is precipitated silica, is said to have ureas silica activated agent transparency better, in particular what name? Is there any other good activator or curing system?
Precipitated silica for fumed silica. Such as zinc carbonate instead of zinc oxide preferably with DCP or double 2. 5 instead of sulfur or TMTD cured, of course, have very high physical requirements even. Check out the best index each filling rate, refractive index is more similar, more transparent. Peroxide curing system of transparent plastic material, high transparency, but the choice of white carbon black is not good color slightly a little red (yellow) color. I want to with conventional vulcanization system, use the carbon black, but can not use the accelerator of, at 0.5 to 0.8%, and color is not yellow, partial yellow can. Need to make efficient crosslinking curing agent, but silica filled, less dosage of curing accelerator is poor, more difficult.
Shenzhen odd and silicone rubber hose manufacturers analysis: to promote the selection of M, TMTD, such as the use of a better transparency, such as coke burning allows the use of DM as a deputy promoter. DEG, IR actually do very transparent, just started out very transparent, but cooled down a layer of fog will play. Due to the high requirements on physical properties, hardness in a is greater than 36 degrees Shao around, taking into account the effect of chemical properties, so the promoter was not high. Want to use a lot of accelerators, but the amount of large, other properties (chemical) will not be qualified.
It has always wanted to improve the physical properties of the transparent formulation in the condition of the use of very few accelerators and the curing agent. However, due to the high chemical properties of the products, so can only consider the use of active agents and fill up the good performance of the filling material. Is a good material for a transparent formulation of the reinforcing properties, or a very efficient vulcanization, accelerator? Now just use the precipitated white carbon black, white carbon black raw materials are those fill strong performance good, at the same time, the promotion and curing system has little effect on the species? Is the issue of transparency or the extent of the problem of the degree of crosslinking, said to be only used in sulfur curing, it is recommended to add a little 0.5PHR TRA in your original system.
This paper is from Shenzhen,, id=439?
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