microsilica for rubber industry【价格 厂家 供应】-pg电玩城

microsilica for rubber industry: after adding a certain amount of microsilica, the extension shrinkage, tear resistance and aging resistance of rubber are greatly improved. this kind of rubber also has good dielectric property and low water absorption capacity. it is used for rubber to improve its extensibility, tear resistance and tensile strength. it can also be used in the production of refractories and ceramic products to effectively improve the strength and durability of products.

the microsilica can fill the pores between the cement particles, and at the same time form gels with the hydration products, and form gels with the alkaline material magnesium oxide. in the concrete, mortar and refractory castable of cement base, the addition of appropriate amount of microsilica silica ash can reduce water and enhance the effect. in fact, this is the main characteristic of the microsilica, because it not only has high volcanic activity, but also has relatively large surface area. because the fineness of micromicrosilica is less than 1um, accounting for more than 80%, the average particle size is between 0.1 and 0.3um, and the specific surface area is 20 ~ 28m2/g. its fineness and specific surface area are about 80 ~ 100 times of cement and 50 ~ 70 times of fly ash. so that's it.

adding method of microsilica

the construction mix proportion of microsilica concrete and castable shall be made by the laboratory. strictly follow mix proportion construction. in the mixing of wollastonite concrete, wollastonite should join the mixer immediately after the aggregate is poured.

there are two kinds of procedures for the participation of microsilica: it can be put into aggregate, and then put into silica fume and cement dry mix, and then participate in water and other additives. the company invested 75% wollastonite in coarse aggregate and 50% wollastonite in fine aggregate, which was stirred for 15-30 seconds, and then added 50% wollastonite in cement additive and 25% water, which was mixed to the average. mixing time is 20-25% or 50-60 seconds longer than normal concrete. do not mix microsilica into the concrete.