In plastic treatment, filler is to use one of most extensive additive, and in the additive in all sorts of types, the dosage of calcium carbonate is the biggest, its price also lowest, apply the most extensive also, in plastic finished product, calcium carbonate serves as a kind of inorganic filler, can drop not merely the raw material capital of plastic finished product, and be on sure degree return can useful substitution is certain and plastic modifier, arrive to drop already the capital of plastic commodity, rise to improve the result of the certain function of plastic finished product again, become a kind of cheap plastic modifier, those who follow technology of calcium carbonate profession is ceaseless begin, the ceaseless progress of technology and equipment, the bead diameter of calcium carbonate can be accomplished finer and finer, and even reach accept rice level, the gimmick of outside processing also increases ceaselessly yuan change, make calcium carbonate increases ceaselessly in the dosage in plastic treatment profession, use is more and more extensive.
Calcium carbonate is applied mediumly in Chinese plastic industry very wide, carry dosage is most is polyethylene, polypropylene and polyvinyl chloride finished product, finished product of polyethylene, polypropylene basically has: Plastic textile bag, textile bag and bale belt, box of calcic model rows of tiles on a roof: Plastic film, polyvinyl chloride finished product basically has: The data end the shop such as remove from office of plastic floor, floor: Leatheroid reachs synthetic leather, polyvinyl chloride is in charge of jacket of cable of profile of window of door of steel of model of path, pvc and power to wait to catchment, the bazaar of these commodity has an amount very big, occupy the 50% above of market of all and plastic commodity about.
In recent years, follow calcium carbonate to exceed fine to refine those who reach outside processing technology to begin, what the bead diameter of calcium carbonate already was handled now is very fine, arrive from 1 micron rice of a few accept, namely so called exceed fine calcium carbonate of the rice that reach pay, the effect of these calcium carbonate already already exceeded the concept of extender now now, change holds two function of modifier concurrently to provide extender, attend to exceed fine calcium carbonate mensurably surely, the tensile strength that can increase molecular polymer data greatly, fight impact strength and appearance bright and clean degree, be a kind of petty gain, efficient modifier. Consequently, reasonable choose calcium carbonate, arrive at a technology to drop the capital of commodity, can increase the intent of the function of commodity again, need has a new knowledge to the calcium carbonate of all sorts of function.
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