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Car seals can improve the airtightness and prevent the wind and rain from intruding into the car. Once the car seals aging breakage, will cause the car leakage, increase the car driving wind noise, rain leakage and easy to make the body rust, many people have suffered a lot because of this problem. So the car door seals and other rubber sealing products in the production process of some of the problems that may lead to door seals and other rubber sealing strip surface bubble phenomenon, what is the reason? Let's take a look.
Bubble cause analysis
( 1 ) mixing rubber in the mixing of additives dispersed unevenly.
( 2 ) more impurities in the vulcanising agent, small molecules of impurities in advance into the decomposition, bubble residue products.
(3) mixing temperature is low, there is water, water evaporation is not clean, high temperature when the rubber in the open machine with sulfur when sulfur is easy to melt, or burnt.
( 4 ) The rubber material parking time is not enough or no parking on the production and use.
(5) The rubber is not uniformly heated, and the surface is not smooth when it comes out of the mould.
( 7 ) Rubber in the opening machine, hot refining, the surface wrapped in air, out of the rubber has a nested air phenomenon.
(8 ) not fully vulcanised, not cooked look bubbles.
(9 )The temperature of the rolls of the refiner, the temperature of the rubber supply in the hot refining and the temperature of the rubber discharge in the extrusion are not strictly controlled, and there are bubbles on the surface of the semi-finished parts.
Bubble cause analysis
( 1 ) mixing rubber in the mixing of additives dispersed unevenly.
( 2 ) more impurities in the vulcanising agent, small molecules of impurities in advance into the decomposition, bubble residue products.
(3) mixing temperature is low, there is water, water evaporation is not clean, high temperature when the rubber in the open machine with sulfur when sulfur is easy to melt, or burnt.
( 4 ) The rubber material parking time is not enough or no parking on the production and use.
(5) The rubber is not uniformly heated, and the surface is not smooth when it comes out of the mould.
( 7 ) Rubber in the opening machine, hot refining, the surface wrapped in air, out of the rubber has a nested air phenomenon.
(8 ) not fully vulcanised, not cooked look bubbles.
(9 )The temperature of the rolls of the refiner, the temperature of the rubber supply in the hot refining and the temperature of the rubber discharge in the extrusion are not strictly controlled, and there are bubbles on the surface of the semi-finished parts.
