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How to test the density of silicone rubber?
Silicone tube with a rubber mixing process in the production of, because the role of silicone tube production of different hardness will be different, so the mixing density test is very important, then how to test for silicone rubber density? Need to pay attention to what factors? Also important is the mixing of rubber quickly seized requires determination of the density, but we mixed compound tablet after a lot of bubbles, porosity, such density measurement is not accurate, how to solve this problem?
Bubble and how to get rid of the pores, open a lot of pressure on the machine to press and the hole, can not get rid of. Mix fast check should be detected after curing, the density of ah, all rubber is vulcanized, after measuring the density! No density before curing. The mixing density, originally is apparent density, there are relatively large error, but the use of solid incompressible assumption can be through the measurement of vulcanized rubber and rubber mix density and get porosity. First tried several times to pass a small thin bubble out, then revulcanization.
Density measurement can not vulcanizate, quickly seized is quality control services, cut a small piece of nonporous foam compound into the fluid density, do some take his average can determine the density standard. Dial a few times or find a extruder to squeeze out a short section on the line, are done after the density test, the non vulcanized rubber material due to the problem of porosity, density is extremely inaccurate. Plus sulfur glue material is not parked? Not to detect the density of sulfide, is the time problem, or testing standards? But only in the presence of carbon black for bulk detection.
This paper is from Shenzhen,, id=567?
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