车用针刺无纺布复合蜂窝板材料的性能研究

发布时间：2018-01-17 03:30

  本文关键词：车用针刺无纺布复合蜂窝板材料的性能研究　出处：《东华大学》2015年硕士论文　论文类型：学位论文

  更多相关文章： 针刺无纺布 蜂窝板 耐磨性 剥离强度

【摘要】：随着汽车产业的快速发展，，与其相关联的汽车零部件产业发展也突飞猛进，汽车用纺织品由于其性能优良，工艺简单，成本较低等优势，成为汽车制造业越来越青睐的原材料。同时，聚丙烯蜂窝板结构的大量开发与运用，使得材料轻量化趋势越来越明显。 本课题的研究对象正是当下最受汽车生产商，甚至是航天器制造商欢迎的高性能纺织品复合蜂窝板。在汽车后备箱内表面安装的板材，是由改性PP蜂窝板和PP/PET针刺无纺布复合在一起的板材，使材料表面拥有地毯的簇绒感，又不失刚度。 本课题主要以企业提供的PP/PET针刺无纺布和改性PP蜂窝板为研究对象，主要以针刺布与蜂窝板复合工艺为研究内容，主要实验包括： 一、结合生产实践，分别对热压温度、热压时间、热压压力三个因素进行单因子实验，主要以剥离强度和耐磨性能为评价指标，研究其对PP/PET针刺布和改性PP蜂窝板复合的影响，并得到了相应曲线图。剥离强度方面，热压温度越高，热压时间越长，热压压力越大，剥离强度越大，但表面平整度下降；耐磨性方面，随着热压温度、热压时间、热压压力的增大，耐磨性能先增大后降低。 二、根据企业提供不同种类的针刺无纺布，通过分析研究，选取PP/PET的不同配比、不同克重的针刺无纺布分别与改性PP蜂窝板进行热压，对制得样品进行剥离强度和耐磨性能测试。结合实验数据和实际生产，针刺无纺布PP/PET的配比是40/60时，剥离强度和耐磨性方面都比较好，克重为150g/m2时，测试指标即可达到要求。 三、通过前期试验与研究，开发出创新型加工工艺的针刺无纺布与蜂窝板复合，即PP纺粘布与PP/PET针刺无纺布结合的形式再与改性PP蜂窝板热压的方式，结合了PP低熔点和PET耐磨性的双重优点，制得样品与传统混纺制得的PP/PET针刺无纺布对比研究，结果表明新型方法生产的针刺无纺布在剥离强度和耐磨性方面都有提高。 四、最后以热压温度、热压压力、热压时间为三因素，以前期实验为理论基础，分别设置三个水平，设计三因素三水平正交试验，探索研究最佳工艺组合方案为热压温度180℃，热压时间10s，热压压力0.2Mpa。
[Abstract]:With the rapid development of automobile industry, the auto parts industry is developing rapidly. Because of its excellent performance, simple process and low cost, automotive textiles have many advantages. At the same time, with the development and application of polypropylene honeycomb structure, the trend of lightweight materials becomes more and more obvious. The research object of this topic is the high performance textile composite honeycomb plate which is most popular among automobile manufacturers and even spacecraft manufacturers. The plate is installed on the inner surface of the automobile trunk. It is made of modified PP honeycomb sheet and PP/PET needle-punched non-woven sheet, which makes the material surface have the tufted feeling of carpet without losing rigidity. This topic mainly takes the PP/PET needling non-woven cloth and the modified PP honeycomb board provided by the enterprise as the research object, mainly takes the needle punching cloth and the honeycomb plate compound technology as the research content, the main experiment includes: The main contents are as follows: 1. Combined with the production practice, the single factor experiments were carried out on the three factors of hot pressing temperature, hot pressing time and hot pressing pressure, mainly taking peel strength and wear resistance as the evaluation index. The effect on the composite of PP/PET needled cloth and modified PP honeycomb sheet was studied, and the corresponding curves were obtained. The higher the hot pressing temperature, the longer the hot pressing time and the greater the hot pressing pressure. The greater the peeling strength is, the lower the surface smoothness is. In terms of wear resistance, with the increase of hot pressing temperature, hot pressing time and hot pressing pressure, the wear resistance first increases and then decreases. Secondly, according to the different kinds of needled non-woven fabric provided by the enterprise, through the analysis and research, select the different ratio of PP/PET, different grams of weight of needle-punched non-woven fabric and modified PP honeycomb respectively for hot pressing. The peeling strength and wear resistance of the samples were tested. Combined with the experimental data and actual production, when the ratio of PP/PET of needled non-woven fabric was 40/60, the peel strength and wear resistance of the samples were better. When the gram weight is 150 g / m ~ 2, the test index can meet the requirement. Thirdly, through the previous experiment and research, the needle-punched non-woven fabric and honeycomb plate composite of innovative processing technology were developed. The combination of PP spunbonded fabric and PP/PET needle-punched non-woven fabric combined with the hot pressing of modified PP honeycomb plate combined the advantages of low melting point of PP and wear resistance of PET. The results show that the peeling strength and wear resistance of the needle-punched non-woven fabrics produced by the new method have been improved. Finally, with the three factors of hot pressing temperature, hot pressing pressure and hot pressing time as the theoretical basis, three levels are set up, and three factors and three levels orthogonal test are designed. The optimum process combination is hot pressing temperature 180 鈩

本文编号：1436140