以大理石废料与回收塑料为原料研制聚酯混凝土

Polymer Concrete from Marble Wastes and Recycled Poly(ethylene terephthalate)

以苯乙烯改性聚酯(SP)与大理石废料为原料研制聚酯混凝土(PC)。所用的不饱和聚酯(UP)是PET塑料与醋酸酐及脂肪酸发生解聚所生成的聚合物反应后所制得。之后将UP与苯乙烯单体按重量比60∶40的比例混合制成SP,进而研制出PC。研究目的是探讨PC作为聚酯基建筑材料使用的适应性。以大理石废料与PET塑料瓶为原料研制PC,减少废物的积累,对环境保护起到积极作用,同时因节省其他填充材料的消耗而产生经济效益。该文还探讨了在不同实验条件下PC试块的力学性能,同时通过测试其抗化学腐蚀性和吸水性评价其耐久性。从所得数据可以作出结论,该PC在20%Na_2CO_3、10%NaOH溶液、自来水、地下水和海水中具有好的抗化学腐蚀性,除此之外,所研制的PC视孔率低,吸水率低,空隙小。

A polymer concrete （PC） was synthesized by mixing styrenated polyester （SP） and marble wastes as fillers. The unsaturated polyester （UP） used was prepared from the reaction of oligomers obtained from the epolymerization of polyethylene terephthalate （PET） soft drink bottles with maleic anhydride and adipic acid. The UP was then mixed with the styrene monomers at a ratio of 60 ： 40 by weight to obtain the SP used for the synthesis of the PC. The aim of this work is to study the suitability of the prepared PC to be used as polymer based building aterials. Using marble and PET soft drink bottle wastes for the preparation of the PC affects the environment positively, by voiding the accumulation of these wastes. Saving the raw materials of polymer and fillers for other applications is another economical advantage of preparing the PC from the recycled PET and marble waste. Mechanical integrity of the PC was studied as blocks prepared under different experimental conditions, Chemical resistance and water bsorption were also followed to evaluate the durability of the products obtained, In addition, the flammability of the SP and the PC prepared was also studied, Based on the data obtained, it could be concluded that the PC under onsideration has good chemical resistance for 20% Na2CO3, 10% NaOH, tap water, ground water and sea water. Besides the cceptable chemical resistance, the prepared PC shows low apparent porosity, low water absorption, and small open pores.