First, the production process
The coal tar is heated to 120-140 ° C for dehydration, and then cooled to 40 ~ 50 ° C for use. The raw materials such as PVC stearate, perlite powder, chloroformamide, urea and the like are pulverized, added to the rare earth additive and mixed uniformly, and then poured into o-nonyl di-acid dioctyl ester and mixed and stirred for not less than 20 min. Then slowly heat to 140 ° C with constant stirring and constant temperature until the end of foaming.
Second, characteristics and applications
The product is a cavity. It has the advantages of strong adhesion, good durability, wide temperature range, excellent thermal stability, low waterproof and thermal conductivity.
Its performance indicators are as follows:
1 thermal conductivity .0075w / mk (298K);
2 bonding strength>0.2MPa;
3 resistance is not more than 4mm vertically at 80;
4 low temperature flexibility at 35 ° C cold bend 30 does not break;
5 anti-seepage: 30min under dynamic pressure 0.2MPa; impervious to water;
6 immersed in 1% sulfuric acid and saturated calcium hydroxide for 15 days without abnormality;
7 anti-aging property: no abnormality caused by water-cooled xenon lamp for 300h;
8 suitable temperature is 40-80 °C.
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