ntensity will not decrease, the weight will not reduce; If put it under the high temperature of 350 degrees for 120 hours, the weight only decreased by abou 0.6%; Under the situation of -180 degrees, it will not chap and keep the original pliability;
（2）Hardly to adhere any material; It is easy to wash away the blot or other dust such as resin, coating material, etc.
（3） Chemical corrosion resistant, it could resist acid, alkali, aqua fortis and various kinds of organic liquid corrosion;
（4