| 王宇翔,赵新涛,张春辉.树脂在纸基摩擦材料中分布规律的研究[J].中国造纸,2025,(8):51-60 |
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| 树脂在纸基摩擦材料中分布规律的研究 |
| Study on the Distribution of Resin in Paper-based Friction Materials |
| 收稿日期：2025-03-21 修订日期：2025-04-08 |
| DOI：10.11980/j.issn.0254-508X.2025.08.007 |
| 关键词: 纸基摩擦材料 树脂分布 浸渍 |
| Key Words:paper-based friction materials resin distribution impregnation |
| 基金项目:高性能湿式纸基摩擦材料基纸（项目号：D8216860）。 |
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| 摘要:纸基摩擦材料的结构和性能本质上受其表面及内部树脂的影响，树脂分布均匀性决定了纸基摩擦材料内部各组分间的相互作用，从而影响整体的理化特性。为实现树脂在纸基摩擦材料中的均匀分布，探究了树脂含量对树脂在纸基摩擦材料Z向（从网面到毯面）分布的影响。结果表明，随着树脂溶液质量分数提高，纸基摩擦材料的树脂含量增加，孔隙率和平均孔径减小。根据纸基摩擦材料中各个组分对X射线吸收程度的差异，测量树脂含量。当树脂含量较低，体积占比为7%左右时，树脂在纸基摩擦材料Z向分布较均匀。随着树脂含量的增加，由于原纸中纤维、填料和孔隙的不均匀分布，造成树脂在纸基摩擦材料Z向分布不均匀，同时纸基摩擦材料的树脂含量两面差增大。当纸基摩擦材料中的树脂含量较高时，树脂进一步占据纸基摩擦材料内部被空气占据的可用空间，导致其内部树脂继续增多，但树脂含量两面差仅0.5%。 |
| Abstract:Structure and properties of paper-based friction materials are essentially affected by their surface and internal resins， and the uniformity of resin distribution determines the interaction among the internal components of paper-based friction materials， thus affecting the overall physico chemical properties. In order to realize the uniform distribution of resin in paper-based friction materials， the effect of resin content on the Z direction distribution (from mesh to blanket) of resin in paper-based friction materials was investigated. The results showed that with the increase of resin solution mass fraction， the resin content of paper-based friction materials increased， and the porosity and average pore size decreased. According to the difference of X-ray absorption degree of each component in paper-based friction material， the resin content was measured. When the resin content was low and the volume proportion was about 7%， the resin was evenly distributed in the Z direction of the paper-based friction material. With the increase of resin content， due to the uneven distribution of fibers， fillers， and pores in the base paper， the Z direction distribution of the resin in the paper-based friction material was uneven， and the two-sided difference of the resin content of the paper-based friction material increased. When the resin content in the paper-based friction material was high， the resin further occupied the available space occupied by air inside the paper-based friction material， resulting in the continuous increase of the resin inside the paper-based friction material， but the difference between the two sides of the resin content was only 0.5%. |
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