本文關鍵詞：硼改性酚醛樹脂與丁腈橡膠比例對摩擦材料性能的影響，由筆耕文化傳播整理發(fā)布。

硼改性酚醛樹脂與丁腈橡膠比例對摩擦材料性能的影響

Effects of ratio of boron modified phenolic resin to nitrile butadiene rubber on properties of friction materials

[1] [2] [3] [4] [5]

Liu .lunheng, He Chunxia, Liu Jing, Fu Jingjing, Lu Derong （ 1. College of Engineering, Nanjing Agriculture University, Nanjing 210031, China; 2. The Key Laboratory of Intell

[1]南京農業(yè)大學工學院,南京210031; [2]江蘇省智能化農業(yè)裝備重點實驗室,南京210031

文章摘要：為探究硼改性酚醛樹脂與丁腈橡膠的質量比（BPF/NBR）對復合摩擦材料力學性能、耐熱性能和摩擦磨損性能的影響,采用不同比例的丁腈橡膠和硼改性酚醛樹脂作為復合摩擦材料基體,添加碳纖維、鋼纖維、石墨、氧化鋁粉和沉淀硫酸鋇制成復合摩擦材料。對復合摩擦材料的密度、硬度、壓縮強度和摩擦磨損性能進行了測試,用變焦距體視顯微鏡觀察磨損表面,并分析其磨損機理。用差分掃描量熱儀對摩擦材料進行耐熱性分析。結果表明：BPF/NBR質量比對復合摩擦材料的力學性能、耐磨及耐熱性影響較大;當硼改性酚醛樹脂與丁腈橡膠質量比為6∶1時,復合摩擦材料有最高的密度、硬度和壓縮強度,分別為1.933 g/cm~3、105 HRL和134 MPa;當硼改性酚醛樹脂與丁腈橡膠質量比為5∶1時,摩擦材料的磨損量最小;隨著BPF/NBR比例增大,復合摩擦材料表面抗犁削作用增強,黏著轉移減弱。利用丁腈橡膠二次改性硼改性酚醛樹脂能顯著提高硼改性酚醛樹脂的耐熱性能,且硼改性酚醛樹脂與丁腈橡膠的最佳比例介于4∶1和5∶1之間。

Abstr：Phenolic resin, epoxy resin, styrene butadiene rubber and polytetrafluoroethylene can be used as friction material matrix. Due to poor wear resistance, heat resistance and adhesive properties of epoxy resin, styrene butadiene rubber and polytetrafluoroethylene, their applications in friction materials are limited. The advantages of phenolic resin on the heat resistance, adhesive property, mechanical properties, processing properties and lower cost make it become the most commonly used in adhesive base material of composite friction material. However, the pure phenolic resins are brittle, poor toughness, high hardness, poor heat resistance, low strength and large noise during using stage, so modification is an effective method to improve the comprehensive performance. The effects of different ratio of boron modified phenolic resin （BPF） and nitrile butadiene rubber （NBR） on mechanical properties, thermal stability, friction and wear properties of the friction material were investigated. Filled with carbon fibers, steel fibers, graphite particles, A1203 particles and deposit BaSO4 particles, the friction material was prepared with different ratios of boron modified phenolic resin with NBR, which was used as the matrix material. The friction material was formed by die pressing in the temperature of 160~C and in the load of 10 MPa. The density of the friction material was tested by DH-300 electronic densimeter, the hardness of the friction material was tested by XHR-150 plastic Rockwell hardness tester, the compression strength of the friction material was tested by CSS-44100 electronic universal material testing machine, and the friction and wear properties of the friction material was tested by M-2000A friction and wear

文章關鍵詞：

Keyword：:friction materials, phenolic resins, rubber, matrix modification, friction and wear performance, thermal stability

課題項目：國家科技支撐計劃子課題資助項目（2011BAD20B03-02）; 中央高校基本科研業(yè)務費專項基金資助項目（KYZ200921）

  本文關鍵詞：硼改性酚醛樹脂與丁腈橡膠比例對摩擦材料性能的影響，由筆耕文化傳播整理發(fā)布。