纤维长度对无石棉密封垫片性能的影响

发布时间：2018-03-15 07:37

本文选题：垫片　切入点：抄取　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：胶乳抄取无石棉纤维密封垫片一种可以用于生活和生产中各个方面的密封元件,与传统石棉密封垫片相比具有污染小、对人体无危害等优点,但其性能尚未及石棉垫片。为提高无石棉垫片的性能,可以从两点入手:一是改变材料配方;二是优化材料制备工艺。目前对于改善无石棉垫片性能的研究大多从材料配方入手,而对工艺上的研究少之又少,因此,通过制备工艺条件来改善无石棉密封垫片的性能是本文的核心内容。主要工作简述如下:1、对复合材料的界面理论及黏接机理进行研究,发现了不同纤维长度对材料结合情况的影响不同,为不同长度纤维对无石棉垫片性能的影响奠定了理论基础;2、通过槽式调频打浆机对纤维进行相应的切断处理,使用鲍尔筛分仪将纤维筛分成不同长度的组分,以备制取实验样本所需;3、利用均匀试验法设计了试验,并制取本文所需的实验样本无石棉垫片,对制备的垫片进行了性能测试及多元线性回归分析,并对数学模型进行了验证;4、通过对制备垫片的性能分析,发现了纤维长度对无石棉密封垫片各项性能的影响关系,尤以芳纶浆粕的影响最为显著。
[Abstract]:A kind of sealing element which can be used in every aspect of life and production. Compared with traditional asbestos sealing gasket, it has the advantages of less pollution and no harm to human body. In order to improve the performance of stone cotton pad, we can start with two aspects: first, change the material formula; At present, most of the research on improving the performance of stone free cotton pad is based on the material formula, but the research on the process is very little, so, Improving the performance of asbestos-free gasket by preparing process conditions is the core of this paper. The main work is as follows: 1. The interface theory and bonding mechanism of composites are studied. It is found that different fiber lengths have different effects on the binding of materials, which lays a theoretical foundation for the effects of different lengths of fibers on the properties of stone-free cotton pads. The fiber is cut off by a slot frequency modulation sizing machine. The fiber sieve is divided into components of different lengths by using the Bauer sieve, which can be used for the preparation of experimental samples. The experiments are designed by using the uniform test method, and the experimental samples without stone cotton pads required in this paper are made. The performance test and multivariate linear regression analysis of the gasket were carried out, and the mathematical model was verified. The influence of fiber length on the performance of asbestos-free gasket was found by analyzing the performance of the gasket. The effect of aramid pulp is the most obvious.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB743

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