Abstract:

Objective Quartz fibers and their fiber mats are known for their high temperature resistance, strength and insulation and are widely used in the aerospace industry. However, how to composite quartz fibers and their fiber mats to give them the integrity and washout resistance of aerospace materials. Therefore, we performed composite weaving using an integrated weaving method and investigated the thermal insulation properties of quartz/fiber mats three-dimensional spacer fabrics.This study aims to provide valuable insights into the weaving of quartz fibers and the overall structural thermal insulation properties of three-dimensional fabrics.

Method Quartz/fiber felt three-dimensional fabrics, quartz yarn and fiber felt with better thermal insulation properties using a one-piece knitting method for knitting, fabric thickness instrument to measure the quartz/fiber felt three-dimensional spacing fabrics, calculating the number of single-layer quartz fiber fabrics of equal thickness, placing the fabric on the top of the heating plate, the sensor to measure the temperature of the fabric's upper and lower surfaces, calculating the rate of retention of the thermal insulation.

Results According to the variation of the fabric thermal insulation performance, the thermal insulation performance of quartz/fiber mat 3-D spacer fabrics is much higher than that of quartz fiber fabrics of the same thickness. By comparing thermal insulation retention of ordinary quartz fiber fabrics with quartz/fiber mat 3-D fabrics. Quartz/fiber felt three-dimensional fabrics of thermal insulation performance is significantly better than the same thickness of ordinary quartz fiber fabrics, spacer fabrics of thermal insulation temperature retention rate of up to 300 ℃, the retention rate of 64.3% is ordinary quartz fabrics insulation effect of 4.14 times, so it shows that the quartz/fiber felt three-dimensional spacer fabrics can be better applied to the application of heat-insulating materials.

Conclusion The following conclusions were drawn from the experiments. The quartz/fiber mat three-dimensional spacer fabrics showed a linear decrease in insulation temperature retention of 64.3%, 64.2%, 60.7%, 58.4%, and 56.4% with the increase in temperature during the testing process, which was attributed to the fact that the quartz fiber mats were partially damaged to the fabric insulation structure after being heated to too high a temperature, resulting in a decrease in the heat insulation capacity. In the test of ordinary single-layer ordinary quartz fiber fabric, with the increase of temperature, its thermal insulation temperature retention rate is 15.4%, 15.5%, 15.9%, 17.2%, 18.6%, and quartz/fiber mats three-dimensional spacer fabrics thermal insulation performance in contrast to spacer fabrics for the ordinary quartz fabrics 4 times, thus verifying that quartz/fiber mats three-dimensional spacer fabrics thermal insulation performance is excellent.

Key words: quartz yarn, fiber mat, three-dimensional fabric, spacer fabric, thermal insulation