The performance and processing process of non -metallic materials are changing with each passing day, making its unprecedented speeds applied to the car. The average dosage of non-metal materials per car has been increased from 68.4 kg in 1981 to 150-180 kg. At the same time, the market has put forward higher requirements for the corresponding performance of such materials, such as the impact of the condensation of the volatile substance on the car interior material on the windshield of the driver's driving, the permeability of the plastic fuel tank, the inner tire, and safety The obstruction of the airbags and so on. In response to these problems, the corresponding detection methods, testing standards, and testing instruments have also been launched and continuously improved.
The atomization detection of interior parts
Automotive interior decorative materials, such as engineering plastics, textiles, leather, non -woven fabrics, etc. Various adhesives used in installing these materials, under the action of high temperature, the easily volatilized ingredients will evaporate, and form a condensed on the car window or windshield, causing the driver's poor vision and seriously affecting driving safety. At present, there are already tests in foreign countries. The relevant test standards followed are in 75201, ISO 6452, SAE J1756, etc. Some domestic automobile and interior production enterprises may also pay enough attention to related testing in order to improve the quality of product quality or to develop overseas markets.
There are two test methods: gloss test method and weight test method. The former is measured by changing the changes in the gloss before and after the atomization of the glass plate. In addition, the fog value or atomization-condensed quality that can be trial can also be quantified to obtain the volatile amount of the toxic and harmful substances of the sample; To how much the atomization phenomenon of the front lights of the car will affect the lighting.
The breathable and humidity detection of the seat material
During the long journey, drivers and passengers often sit in the car a few times in the car. Even dozens of hours, the ventilation and humidity performance of car seat materials is higher than other places. Good seat cushions and chairs should be soft and elastic, and have good breathability and humidity, so that the sweat of drivers and passengers can be discharged smoothly and makes people feel comfortable.
The detection method of the breathableness is: Take the samples of the specified size in the test cavity, and take the time on one side of the sample to form a certain pressure difference on both sides of the sample. The measurement gas is measured in a certain period of time to calculate the breathability through the flow of the sample given in a certain period of time; or keep the pressure difference on both sides of the sample through the flow of the sample, and calculate the air circulation resistance. This test method follows IOS10655-2003.