echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Active Ingredient News > Drugs Articles > Test technology for fogging of automobile interior materials

    Test technology for fogging of automobile interior materials

    • Last Update: 2009-01-16
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    3 The harm of fogging of automobile interior materials 3.1 fogging test technology The volatile substances in automobile interior materials will condense on the windshield after being heated and volatilized This kind of condensation of volatile substances in automobile interior parts on the glass sheet is called fogging, also known as fogging, and its condensation is also called condensation component The fogging of automobile interior materials will hinder the vision through the windshield, and will affect the safety of driving under adverse light conditions At the same time, because most of the condensation components are harmful organic volatiles, the level of fogging can also reflect the level of organic volatiles in interior materials Therefore, the automobile manufacturers in the developed countries have formulated the limit standards for the fogging of automobile interior materials 3.2 development of fogging test technology in the 1970s, some large European automobile factories began to study the fogging characteristics of automobile interior parts In the early 1980s, German automobile standard drafting committee and synthesis The Drafting Committee of material standards jointly formed a "fogging" working group to systematically study the testing methods and reproducibility of fogging In 1992, the corresponding standard din75201 "determination of the windscreen fogging characteristics of trim materials in motor vehicles" was issued Later, the American Society of automotive engineers and the international organization for Standardization (ISO) modified some of the standards based on din75201, and issued relevant standards ISO 6452 and SAE J1756 According to the above standards, the main automobile manufacturers in the world have issued the enterprise standards for the determination of fogging, and put forward the relevant requirements for the fogging characteristics of automobile interior parts 3.3 principle of test method: the volatile matter in automobile interior materials volatilizes to the air after being heated When the hot air meets the cooling object, the volatile matter condenses into liquid and attaches to the cooling object The fogging process is the evaporation condensation process Put the sample into the fogging cup, cover the fogging cup with a sealing ring and a glass ring (or a piece of weighed aluminum foil), and install a cooler on it The fogging cup is heated in a thermostat The sample is heated in the atomizing cup, and the volatile matter in the sample begins to volatilize, and the evaporated gas condenses on the glass plate which has been cooled down At the end of the condensation process, remove the glass plate, and place it in the state specified in the standard for the specified time Then use the glossmeter to measure the glossy value of the glass plate, and compare it with the initial glossy value of the glass plate before the test, so as to obtain the fogging value of the tested material Or use the transmittance meter to measure the parallel light transmittance of the glass plate after the test, and the parallel light of the glass plate before the test The glass fuzziness of the tested material is obtained by comparing the transmittance The sample is heated in a fogging cup, and the evaporated gas condenses on the cooled aluminum foil After the condensation process, take off the aluminum foil, weigh its mass with electronic balance, subtract the mass of the aluminum foil itself, and get the mass of the atomized condensate of the tested material - condensation component 3.4 the main equipment required for the fogging test of the test equipment are atomizer, glossmeter and high-precision balance The structure of fogger mainly includes temperature control pool, cooling system, fog cup, etc the structure diagram of fogger is shown in Figure 3-1 Only glass plate is used when measuring the fogging value, and only aluminum foil is used when measuring the weight of condensation Temperature control pool: the purpose of temperature control pool is to heat the fogging cup according to the specified temperature requirements The temperature control range is 60 ~ 120 ℃, the temperature accuracy is ± 0.5 ℃, and it can be heated to the specified temperature within 20 minutes Cooling part: used for cooling glass (or aluminum foil) The temperature control range is generally 20 ~ 60 ℃, and the temperature accuracy is ± 1 ℃ The cooling piece shall be made of non corrosive materials, and the contact surface with the glass piece shall be flat Fogging Cup: glass cup or stainless steel cup, smooth in the cup, the size of fogging cup varies according to different standards 3.5 international and foreign standards and requirements international and foreign standardization organizations have issued the following standards for the determination of fogging characteristics of trim materials in the interior of automobile: ISO 6452:200 (E) Autos - rubber, plastics, leatherette - Determination of haze characteristics of automotive interior parts Determination of the windscreen fogging characteristics of trim materials in motor vehicles (DIN 75201) SAE J1756 issued DEC94 test procedure to determine the fogging characteristics of interior automotive materials 3.6 standards and requirements of major foreign automobile enterprises at present, major foreign automobile enterprises have formulated corresponding standards for the determination of fogging property of automobile interior materials The main standards are as follows: Volkswagen technical standard: pv3920 determination of fogging value of non-metallic interior materials pv3015 determination of condensation components Mitsubishi standard: es-x83231 Standard Test Method for fogging of interior materials Nissan technical standard: NES m0161 test method for fogging of interior materials Peugeot Citroen material test standard: D45 1727 fogging water condensation of interior lining and accessories materials GM engineering standard: gm9305p determination of fogging characteristics of automotive interior decoration materials Ford engineering materials specification: reference to SAE J1756 Toyota Motor Technical Standard: tsm0503g test method for glass fuzziness of non-metallic materials There are three main measurement parameters, namely, the gloss retention rate (fogging value) after fogging, the reduction rate (fuzziness) of light transmittance of glass plate after fogging, and the quality of condensate (condensation component)  
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.