A kind of rigid polymer microsphere with core shell structure was synthesized by multi step composite emulsion polymerization technique.
通过多步复合乳液聚合方法合成了一种具有核壳结构的刚性聚合物微球。
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The pure polymer gel has low mechanical strength, but the new multi-function composite gel has high mechanical strength, which can control the down-hole loss circulation effectively.
Poly(vinyl alcohol) (PVA) is a multi-hydroxyl polymer, which can be prepared from natural gas, thus becomes more and more important in the situation of petroleum scarcity.