雷射烧结粉末，雷射烧结物件及制造雷射烧结物件之方法;LASER SINTERING POWDER, LASER SINTERING ARTICLE, AND A METHOD OF MAKING A LASER SINTERING ARTICLE

摘要

本发明包括一种雷射烧结粉末组合物，其包括：大于30wt.%至90wt.%之氢化苯乙烯-丁二烯/苯乙烯-苯乙烯(S(EB/S)S)嵌段共聚物或氢化苯乙烯-丁二烯-苯乙烯(SEBS)嵌段共聚物或其混合物；10wt.%至小于70wt.%之C3-C8聚烯烃或两种或更多种聚烯烃之混合物；0至20wt.%之矿物油；0.2wt.%至1wt.%之一或多种抗氧化剂；0至5wt.%之着色剂；0至20wt.%之表面改质剂，其中该等上述成份之总量为100wt.%；及基于100重量份数之该雷射烧结粉末组合物视情况0至5重量份数之粉末流动剂。该组合物在190℃/2.16kg质量下具有至少20克/10min之熔体流速。本发明亦包括雷射烧结物件及其制造方法。; 10 to less than 70 wt.% of a C3to C8polyolefin, or a mixture of two or more polyolefins, 0 to 20 wt.% mineral oil, 0.2 to 1 wt.% of one or more antioxidants, 0 to 5 wt.% colorant, 0 to 20 wt.% surface modifying agent, wherein the total of the above ingredients is 100 wt.%, and optionally 0 to 5 parts by weight of a powder flow agent, based on 100 weight parts of the laser sintering powder composition. The composition has a melt flow rate of at least 20 grams/10min. at 190℃/2.16 kg mass. The invention also comprises laser sintered articles and methods for making the same.