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炭复材料生产中采用树脂和沥青作粘结剂。沥青和树脂在热处理过程中的性质和状态决定了炭复合材料的气孔结构、缺陷性、热性能和机械性能等综合因素。不能将固化的无填充料的试样在炭化过程中所进行的对树脂性状的研究结果简单地用作对同样树脂在塑性材料中的性状研究,因为在填充料(纤维和布)的表面形成了特殊的显微结构,而在填充料表面的树脂层中在加工和成型过程中又产生了新的结构。因此对树脂的研究课题可有如下两个方面。 1.确定以重量损失和线性变化为特征的发生最剧烈物理化学(?)化的温度范围; 2.研究作为复合材料热处理时产生的应力来源之一的树脂和沥青的线膨胀温度系数的构成。用立式石英膨胀仪研究热膨胀。用刻度值为1.0～0.2μm的千分表或光学指示器测定延
Carbon composite materials used in the production of resin and asphalt binder. The nature and state of bitumen and resin during heat treatment determine the combined factors of stomatal structure, defects, thermal and mechanical properties of the carbon composite. The result of a study of the resin properties performed during the carbonization of a cured unfilled sample can not be used simply as a study of the same resin in plastic materials because the surface of the filler (fiber and cloth) forms a special Of the microstructure, and in the filler surface of the resin layer in the processing and molding process has created a new structure. Therefore, the study of the resin can have the following two aspects. 1. Determine the most violent physico-chemical temperature range in which the loss of weight and linearity occurs; 2. Investigate the composition of the temperature coefficient of linear expansion of the resin and bitumen as one of the stressors in the heat treatment of the composite . Thermal Expansion Using a Vertical Quartz Dilatometer. Determine the delay with a dial indicator or optical indicator with a scale value of 1.0 to 0.2 μm