橡胶嵌缝条在水泥混凝土路面接缝中的粘结性能研究

发布时间：2018-06-23 02:33

本文选题：橡胶嵌缝条 + 填缝材料　；参考：《济南大学》2017年硕士论文

【摘要】：近年来,我国水泥混凝土路面发展很快,其在我国道路建设中占据着主导地位。水泥混凝土路面寿命的长短与水泥混凝土路面填缝材料性能的优劣有直接关系,如何得到性能优良兼顾成本低廉的高性价比填缝材料,是困扰众多研究者多年的技术难题。目前,国内应用较多的是聚氨酯型填缝材料,当有水存在时异氰酸酯基会与水反应并释放CO2气体,使接缝材料胶层起泡而影响性能,雨雾天气限制了聚氨酯型填缝材料的正常施工。本研究旨在研究出一种可以带水施工的复合型水泥混凝土路面填缝材料。制备了一种水性胶粘剂复合橡胶条作为接缝材料。同时制备了一种水溶性超支化聚酰胺-酯改性水性胶粘剂,水溶性超支化聚合物末端大量的极性基团会增加接缝界面与橡胶嵌缝条的粘结强度。还制备了一种界面剂预先涂刷于接缝基层,降低了接缝表面结构缺陷对填缝材料粘结强度造成的不良影响。该填缝材料绿色环保,施工操作简单,成本低廉。本研究主要由以下几部分组成:1.复合型填缝材料的制备首先用聚合物乳液与助剂制备出水性胶粘剂,然后复合9种不同种类橡胶嵌缝条作为填缝材料。对复合型填缝材料进行粘结强度、耐高温、负温抗裂性、热压冷拉、耐老化性能测试。通过性能测试,优选出了聚氨酯橡胶嵌缝条-填缝材料和天然橡胶嵌缝条-填缝材料。2.水溶性超支化聚酰胺-酯合成及表征(WHPAE)首先用丁二酸酐与二异丙醇胺反应合成AB2型增长单体,再以三羟甲基丙烷为核分子制备出超支化聚合物,通过控制核分子与AB2型增长单体的比例得到第一代、第二代、第三代超支化聚合物。再用丁二酸酐对上述超支化聚合物进行改性,得到末端为羧基的超支化聚合物,最后用二乙醇胺与端羧基超支化聚合物反应得到第一代、第二代、第三代水溶性超支化聚酰胺-酯溶液(WHPAE)。用红外谱图、羟值测定、元素分析测试手段对WHPAE进行表征,通过对测试结果分析得出合成的产物是结构比较完整。3.对水性胶粘剂改性后填缝材料的性能测试把合成的WHPAE添加到水性胶粘剂中,在复合橡胶嵌缝条作为填缝材料进行粘结强度性能测试。结果表明胶粘剂改性后,填缝材料粘结强度得到了提高。WHPAE G1的最佳添加量为8%,WHPAE G2和WHPAE G3的最佳添加量为6%。4.路面接缝界面剂的制备及性能测试用合成的不同代数的水溶性超支化聚酰胺-酯溶液、水性胶粘剂和水按1:2:4的配比制备出路面接缝界面剂。在填入填缝材料前将界面剂涂刷于接缝界面基层,晾干后再填入填缝材料。实验结果表明用界面剂处理接缝后,填缝材料与接缝的粘结强度得到了提高。
[Abstract]:In recent years, cement concrete pavement has developed rapidly in China, which occupies a leading position in road construction in China. The length of life of cement concrete pavement is directly related to the performance of cement concrete pavement jointing material. How to obtain high performance and low cost ratio filling material with good performance and low cost is a technical problem that has been puzzling many researchers for many years. At present, polyurethane filling materials are widely used in our country. When there is water, isocyanate group will react with water and release CO _ 2 gas, which will make the joint material foam and affect its performance. Rain and fog weather restricted the normal construction of polyurethane type joint filling materials. The purpose of this study is to develop a composite cement concrete pavement jointing material which can be constructed with water. A kind of waterborne adhesive compound rubber strip was prepared as joint material. A water-soluble hyperbranched polyamide-ester modified waterborne adhesive was also prepared. A large number of polar groups at the end of the water-soluble hyperbranched polymer increased the bond strength between the joint interface and the rubber seam strips. An interfacial agent was also prepared to prebrush the joint base to reduce the negative effect of the surface structure defects on the bonding strength of the filler. The joint filling material is green and environmental friendly, easy to operate and low in cost. This research mainly consists of the following parts: 1. The preparation of composite seams was made by using polymer emulsion and additives to prepare waterborne adhesives, and then 9 different kinds of rubber stitching strips were used as filling materials. The bonding strength, high temperature resistance, negative temperature crack resistance, hot pressing and cold drawing, aging resistance of the composite filler were tested. Through the performance test, the polyurethane rubber joint material and the natural rubber intercalation material. 2. 2 were selected. Synthesis and characterization of water-soluble hyperbranched polyamide-ester (WHPAE) A _ 2 growth monomer was synthesized by the reaction of succinic anhydride with diisopropanolamine, and then the hyperbranched polymer was prepared by using trihydroxymethyl propane as nuclear molecule. The first generation, second generation and third generation of hyperbranched polymers were obtained by controlling the ratio of nuclear molecules to AB2 growth monomers. The hyperbranched polymers were modified with succinic anhydride to obtain hyperbranched polymers with carboxyl end groups. Finally, the first and second generation of hyperbranched polymers were obtained by the reaction of diethanolamine with carboxyl terminal hyperbranched polymers. Third generation water-soluble hyperbranched polyamide-ester solution (WHPAE). WHPAE was characterized by IR spectrum, hydroxyl value determination and elemental analysis. The result showed that the synthesized product was relatively complete. The properties of the water-based adhesive were tested by adding the WHPAE to the waterborne adhesive. The adhesive strength was tested by using the composite rubber intercalation strip as the filling material. The results showed that the bond strength of the filler was improved by the adhesive modification. The optimum addition amount of 8WHPAE G2 and WHPAE G3 was 6. 4. Preparation and performance testing of pavement joints Interfacial agents were prepared with different algebraic water-soluble hyperbranched polyamide-ester solutions, water-borne adhesives and water at 1:2:4 ratio for the preparation of pavement joint interfacial agents. Apply the interface agent to the interface base before filling in the seam filling material, then dry and fill in the seam filling material. The experimental results show that the bond strength between the filler material and the joint is improved after the interface agent is used to treat the joint.
【学位授予单位】：济南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ336;U416.2

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