歡迎光臨
    手機網站|聯系我們:021-32535039
    上海鼎徵儀器儀表設備有限公司主營:Taber耐磨試驗機,馬丁代爾摩擦試驗機,PV1210鹽霧循環試驗箱,ATLAS氙燈老化試驗機,38DLPLUS超聲波測厚儀
    站內搜索
    聯系我們
    電  話: 021-32535039
    傳  真: 021-32535039
    手  機: 13472521719
    聯系人: 謝文清
    郵  箱: xiewenqing2000@126.com
    地  址: 上海市嘉定區德富路1198號803室太湖世家國際大廈
    技術文章
    PV3987高光耐磨測試標準
    2021-03-09
    上海鼎徵儀器儀表設備有限公司
    滿足大眾PV3987高光耐磨試驗標準會用到我公司代理的 BYK4563光澤度儀,德國Erichsen249耐磨儀、美國taber5900往復式耐磨試驗機 Rubbing adapter C 刮擦頭
    上海鼎徵儀器儀表設備有限公司
    滿足大眾PV3987高光耐磨試驗標準會用到我公司代理的 BYK4563光澤度儀,德國Erichsen249耐磨儀、美國taber5900往復式耐磨試驗機 Rubbing adapter C  刮擦頭
    Scrub Resisitance(Micro-Scrach Resistance)of High-Gloss Surfaces in the Vehicle interrior

     
    Preface
    This satandard supersedes the “Audi AG Provisional Test Specification”and Test Specification PV3975(“Matindale Scrub Resistance”)
    Previous issues
    PV3987:2016-08
    Changes
    The folloowing changes have been made to PV3987:2016-08
    - section 3.1“Test equipment”:exanple changed
    1 Scope
    This PV describes a method for testing the micro-Scratch resistance and scrub resistance on high-gloss surfaces
    A surface is referres to as high-glossy if the gloss level measurement at an angle of 60° is >70GU。Further gloss level measurements are performed with a measuring angle of 20°
     
    This test method is suitable for determining the properties of uncoated (Eg PA PMMA)and coat-ed high-gloss surfaces (eg paint ,in-mold decoration(IMD),in-mold labeling(IML))when they are exposed to low-force friction loads。The load is roughly equivalent to that of the cleaning process the test must be performed on plane surfaces
     
    The test determines the relative chang in gloss that is generated by rubbing/Scrubbing with polishing paper on the high-gloss surface
     
    2 Designation
    Scrub resistance (Micro-scratch resistabce)as per PV3987
     
    3 Testing
    3.1 Test equipment
    Test  equipment Crochmeter as per DIN EN ISO105-X12 or a different testing device with which the required test conditions can be set(testing force 9N,Testing path:104±3mm)
    Test  head Rubbing adapter C as per DIN55654 (see figure1)
    Test equipment/rubbing medium Rolishing paper as per DIN55654:Abrasive grain made of aluminum oxide,semi-open coat density of grain,grain 5um,bonding of grain with full synthetic resin on flexible ,extruded PES film (eg 3M261X)
    Cut the polishing paper to an exact width of 25mm and a minimum length of 75mm
    Gloss measuring device Measure the gloss level using a reflectometer (as per DIN EN ISO 2813) at angle of 20°
     
    3.2 Specimen preparation
    A minimum Specimen size of 150mmx100mm is required to perfprm the test
    Conditioning
    There must be at least 7 days between specimen preparation and testing
    For conditioning ,plan for 45h in a standard atmosphere as per VW50554-23/50-2 condition hydrophilic materials(eg polyamides)for 7 days in a standard atmosphere
    Specimen preparation
    Clean the specimen gently under luder lukewarm running water using only your wet hand
     
    A mild laboratory flushing agent that does not leave a greasy residue can be used as a cleaning agent
    The surfaces to be tested must not be damaged as a result of cleaning
    Then rinse the specimen thoroughly with clear water
    Dry the specimen by blowing it off with oil-free compressed air
    After cleaning,condition hydrophilic materrials once again for 24h in a standard atmosphere
     
     
    3.3 Test procedure
    1 condition (see section3.2)
    2 clean (see section3.2,for hydrophilic materials ,repeat conditioning if necessary)
    3 Meassure the gloss level befor scratching,Measure the gloss level at a measuring angle of 20°
    4 Rub/Scratch:Befeor each rubbing process,Clamp in a new rubbing medium。One rubbing
     Process comprise 5 double strokes。Rub with a load of 9N。If the rubbed track is not uniform
    (streaky spotted),perform a repeat test
    5 After rubbing,store the specimens at room temperature for 24h
    6 Measure the gloss level on the track 。Align the gloss measuring device in such a way
     That  themeasuring direction is 90° relative to the rubbing direction。Make sure that the measuring hole of the gloss measuring device rests on the rubbed surface。Do not measure the first and last 10mm of the rubbed track。
     
    3.4 Evaluation/assessment
    Determine the scrub resistance as a relative change in gloss level(%)with respect to the initial
    Gloss level。The measuring angle is 20°
    Calculate the relative change in gloss level as follow:
    (initial gloss level - gloss level after rubbing)x 100 / initial gloss level
     
    4 Applicable documents
    The following documents cited in this standard are necessary to its application
    Some of the cited documents are translations from the German original。The translations of German terms in such documents may differ from those used in this stand,resulting in terminologocal inconsistency
     
    版權所有© 上海鼎徵儀器儀表設備有限公司
    聯系人:謝文清   聯系電話:021-32535039   手機:13472521719   傳真:021-32535039   聯系地址:上海市嘉定區德富路1198號803室太湖世家國際大廈
    滬ICP備12035321號   技術支持:谷瀑環保   管理入口
    国产在线亚洲精品观看不卡按摩_一区二区三区无码高清视频_正在播放国产剧情亂倫