The new ordinary siliceous material supply / silicone grade silica

※ quality indicators technical parameters of ordinary silica (HG ╱ T 3061-1999) Testing items DBP absorption value, cm3 ╱ g 2.00 ~ 3.50 silica content,% ≥ 90 total copper content, mg ╱ kg ≤ 30 manganese content, mg ╱ kg ≤ 50 iron content, mg ╱ kg ≤ 1000 Heating loss,% 4.0-8.0 Loss on ignition,% ≤ 7.0 pH value of 5.0-8.0 45μm sieve residue,% ≤ 0.5 color better than, equal to standard curing time, min - 500% fixed Shen stress, Mpa ≥ 6.3 Tensile strength, Mpa ≥ 17.0 Elongation,% ≥ 675 grade silica gel silica mass index (see product chart) ※ Applications silica As an environmentally friendly, high performance additives, mainly used in rubber products (including high temperature vulcanized silicone rubber), textile, paper, pesticides, food additives fields.