Fogging/Condensate is the condensation of volatile substances discharged by car interior parts and materials on the glass. Internal decorative materials such as leather, plastic, textiles, and adhesives of bonding materials contain some volatile substances, especially under the sun, the temperature in the car rises, which will exacerbate this volatile. The volatile gas condenses on the car window or windshield, causing poor sight, which will affect the driver's sight and driving safety; some volatile substances will be harmful to the human body and affect the health of the driver. In order to reasonably control the generation of volatile substances, it is necessary to perform atomization tests for materials used for car interior. Materials that exceed the standard indicators of the fog value will not be used for car interior.
In the 1970s, some large auto manufacturers in Europe have begun to study the fog characteristics of the interior of the car. The Misty working group conducted a systematic research on the reproduction of foggy testing methods and methods, and released the corresponding standard DIN75201 Determination of the WindScreen Fogging Characteristics in Motor Vehicles in 1992. Subsequently, the American Motor Vehicle Engineer Association and the International Standardization Organization made some modifications on the basis of DIN75201 and issued relevant standards ISO 6452 and SAE J1756. Based on the above -mentioned standards in the world's major automobile manufacturing companies, they have promulgated the corporate standards of fogging, and have put forward relevant requirements for the fog characteristics of automobile interior parts. 2. The current status of the management and control of each enterprise through the atomization test of the interior decorative materials of the car, and the control of the volatile substances in these materials to effectively reduce the environmental pollution in the car. An important means of quality.
At present, there are many types of auto interior materials. There are many internationally and domestic standards. These standards involve three test methods: gloss, weight, and mist. See the following table for various standards and the test methods involved: Standard number full name measurement method Volkswagen PV3015 Measurement of Concrete Composition weight method Volkswagen PV3920 Non -Metal Interior Material Fogging Value Misty Method Toyota TSM0503G The measurement of the shallowness method, weight method Germany DIN 75201 Determination of the Materials for Materials used in the internal equipment of the car, the gloss method of the weight method of the United States SAE J1756 Test Method for Determining the Misty Character of Automobile Interior , ISO 6452 Rubber, Plastic, Artificial Revolution -Automobile Interior Misty Fog Character is glossA degree of luster, weight method for China QB/T 2728 Testing of Leather Physics and Mechanical Tests glossy method, weight method Nissan NES M0161 Internal Materials Misty Test Method The foggy of materials fog, weight method, aircraft and other interior materials, such as car interior plastic parts, polyurethane, textiles, leather, adhesives, non -weaving cloth, thermal plastic elastic body and other materials at high temperatures, volatility at high temperatures, they are volatile at high temperatures. Evaluation of the evaporation of ingredients can also be used for the measurement of high temperature atomization phenomenon in front of the car.
6 test bit design, which can be performed at the same time, which can be performed at the same time + blank test running stable operation, accurate data and high precision temperature control test principle. The cup was heated and began to volatilize. The volatile gas condensed on the glass plate or aluminum foil that had been cooled by the cooling cavity. After the condensation process is over, remove the glass plate or aluminum foil, and measure the atomization value or weight of the condensation ingredients of the glass plate or aluminum foil, and compare it with the data before unimaginas to obtain the fabricization volatilization characteristics of the sample.
Three measurement methods: Glossness method: The gas condensed on the low -temperature glass plate by the sample in the foggy cup, the gloss before and after the glass plate condensates before and after The degree value is compared and calculated, and the fog value of the sample can be obtained. (Standard) Misty Method: The gas condensed on the low -temperature glass plate in the low -temperature glass plate in the foggy cup. By comparing and calculated the fog value before and after the glass plate condensate, the sample can be drawn from the sample of the sample Misty value. (Another purchase) Weight method: The gas condensed on the low -temperature aluminum foil that the sample was heated in the foggy cup. By weighting the weight before and after the aluminum foil condensed, the weight of the sample fog -condensed material can be obtained. (Standard, Tianping separately)
The structure is mainly based on high temperature constant temperature tanks, low temperature constant temperature tanks, cooling disks, fog cups, fog glass boards, measuring meters, samplers and accessories Composition can complete testing processes such as sampling, heating, condensation, and testing. Operation steps to prepare samples → turn on high, low -temperature bath tanks and reach set temperature → cleaning the fog cup and fog glass board → Place the sample → Place the fog glass board or aluminum foil → Place the cooling cavity → keep the set temperature on the two slots, keep the set temperature, and keep the set temperature. And run normally until the test requirements time → remove the glass plate or aluminum foil, put it until the specified time → measure the weight of the gloss, mogic or aluminum foil of the glass plate → compare the data