Powdered styrene- butadiene rubber(PSBR)was prepared by adding polymeric electrolyte encapsulant and ultrafine calcium carbonate to styrene- butadiene rubber latex by coacervation.

• 将高分子电解质包覆剂和超细碳酸钙加入丁苯胶乳中，通过共凝聚法制得粉末丁苯橡胶（PSBR）。