TRIBOROGICAL PROPERTIES OF CARBON TYPE COMPOSITES WITH FRICTION-MODIFYING FUNCTION

具有减摩功能的碳类复合材料的摩擦性能

基本信息

批准号：
09650171
负责人：
SASAKI Masami
金额：
$ 1.66万
依托单位：
TOKAI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

This study describes tribological characteristics of carbon-type composite materials particle mixed composite (A) and fiber reinforced composite (B). Especially, carbonized products, so-called Carbon Precursor, which prepared from thermosetting resin named COPNA (Condensed Polynucleus Aromatic Resin) at about 500ﾟC were payid attention to intermediate materials between organic and inorganic substances. The COPNA resin were prepared from Fluorene(fused polycyclic hydrocarbon) and 1,4-benzendimethaaol with p-toluenesulfonic acid as a catalyst. The cured resin at 210ﾟC and the carbonized product at about 500ﾟC were analysed by IR, TGA, GC-MS to study the polymerization process and initial carbonization process.(A) Particle mixed composite (non-porous material)Two series of flat testing specimens were prepared from Fluorene-based COPNA resin(FC), above-mentioned, and commercial pitch-based COPNA resin (5K) composites filled with 0-40 mass% graphite. Their lubricating properties such as the … More dependence of friction coefficient on load, sliding speed and temperature, were evaluated, using a cylinder/plate type tribometer.Main results are as follow. (1) The load carrying capacity increases and the friction coefficient(mu) decreases with graphite filled content : min. mu=0.04 for FC composite and mm. mu =0.03 for SK composite. (2) Both PC and SK composites give higher limitting PV values, l0-20 MPa m/s, than others reported. (3)The friction of the FC composite increases abruptly at about 300ﾟC during increasing of temperature, but that of the carbonized product holds with a lower value, mu <0.05, up to 550ﾟC.(4) Some very thin films with modified graphite on the rubbing surfaces are observed in good lubrication conditions. This indicates it is expectable to be a bearing material of lower friction. Under oil lubrication, however, the carbonized composite showed higher friction and excessive wear because of less compatibility against oil.(B) Fiber reinforced composite (porous material)Flat testing specimens were prepared from carbon fiber paper and COPNA resin . Their friction behaviors such as the dependence of friction coefficient on load, sliding speed and temperature, were evaluated, under non-lubrication and oil lubrication condition , using above- mentioned tribometer.Both cured and carbonized composites showed great friction change with load, speed, and temperature under non-lubrication condition. Especially, the carbonized composite has higher and more stable friction properties than the cured composite, but the weak point was less mechanical strength in relation to anti-wear property Less

这项研究描述了碳型复合材料颗粒混合复合材料（A）和纤维增强复合材料（B）的摩擦学特征。尤其是，碳化产物，所谓的碳前体，这些碳前体是由约500 c的热固性树脂（称为Copna（冷凝的多核芳香族树脂））制备的，请注意有机物质和无机物质之间的中间材料。 COPNA树脂是从氟（融合的多环芳烃）和1,4-苯二甲乙烷中制备的，并用p-toluenesulfonic酸作为催化剂。通过IR，TGA，GC-MS分析210 c和大约500 c的碳化产物的固化树脂，以研究聚合过程和初始碳化过程。（a）粒子混合复合材料（非孔子材料）两种平面测试由基于液体的COPNA copna resin（FC），浓度（FC），浓度（FC），浓度（FC），并构成（FC），并构成（FC），并构成（FC），并将其（FC）组成（fc），浓度（fc），并构成。 0-40质量％石墨。使用圆柱/板型摩擦仪，评估了它们对摩擦系数对载荷，滑动速度和温度的更依赖性的润滑特性，如下。（1）承载能力的增加，摩擦系数（MU）随着石墨填充含量而减小：最小值。 FC复合材料和MM的MU = 0.04。 MU = 0.03的SK复合材料。（2）PC和SK复合材料具有比其他报道的更高的限制PV值，L0-20 MPA m/s。（3）FC复合材料的摩擦在温度升高时在约300℃下突然增加，但是碳化产物的摩擦值较低，其值较低，MU <0.05，高达550 ﾟC。（4）在良好的润滑条件下观察到一些非常薄的薄膜在摩擦表面上进行了修饰的石墨。这表明它预计将是摩擦较低的轴承材料。然而，在油润滑下，碳化复合材料显示出更高的摩擦和过量磨损，这是由于对油的兼容性较小。（b）用碳纤维纸和COPNA树脂制备纤维增强复合（多孔材料）扁平测试样品。它们的摩擦行为，例如使用上述摩擦仪，在不润滑和油润滑条件下对摩擦系数的依赖性，滑动速度和温度的依赖性，使用上述摩擦计在不润滑和油润滑状态下进行评估。均经过固化和碳化的成分，表明在载荷，速度，速度和不润滑状态下，较高的且较高的均具有较高的特性。关于反衣特性较少