Cots testing knowledge Daquan

2021-09-15

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　　The rubber roller is a roll-shaped product made of metal or other materials as the core and covered with rubber by vulcanization. It is generally composed of outer rubber, hard rubber layer, metal core, roll neck and vent hole. Its processing includes roll core sandblasting, bonding treatment, glue forming, wrapping cloth, wire winding, vulcanization tank vulcanization and surface processing. . Mainly used in papermaking, printing and dyeing, printing, food processing, metallurgy, plastic processing and so on. According to the use, it can be divided into: papermaking rubber roller, printing and dyeing rubber roller, printing rubber roller, grain hulling rubber roller, metallurgical rubber roller and mimeograph rubber roller, etc.; according to the surface shape, it can be divided into: flat roller and pattern rubber roller; according to the material, it can be divided into: Divided into: butyl rubber roller, nitrile rubber roller, polyurethane rubber roller and silicone rubber rubber roller, etc.

　　scope of test:

　　According to the application: papermaking rubber roller, printing and dyeing rubber roller, printing rubber roller, grain hulling rubber roller, metallurgical rubber roller and mimeograph rubber roller, etc.;

　　According to the surface morphology: flat roller and pattern rubber roller;

　　By material: rubber roller, butyl rubber roller, rubber roller, neoprene rubber roller, fluorine rubber roller, ethylene propylene rubber roller, carbon fiber roller, polyurethane rubber roller, silicone rubber rubber roller, etc.

　　Test items:

　　Density, thermal conductivity, formaldehyde, REACH, ROHS, corrosion resistance, low temperature resistance, light transmittance, haze, yellowness index, whiteness, swelling ratio, water content, acid value, hardness, impact properties, tensile properties , Bending performance, electrical performance, safety performance, low temperature performance, resilience performance, tear testing, vertical combustion, ignition temperature, oxygen index, horizontal combustion, hot rod, thermal deformation temperature, thermal decomposition temperature, high and low temperature impact, Glass transition temperature, melting temperature, xenon lamp aging, ultraviolet aging, hot air aging, hydraulic resistance, insulating properties, soluble heavy metals, o-phthalic plasticizers, composition analysis, principal component analysis, comparative analysis, unknown substance analysis, map Analysis, failure analysis, full component analysis, molecular weight analysis, qualitative and quantitative analysis, material identification, formula, etc.

　　Testing standard:

　　GB/T 21538-2008 Coating rubber roller for sheet metal

　　GB/T 29898-2013 Grain and Oil Machinery Cots Rice Huger

　　GB 9897-1988 Technical conditions of papermaking rubber rollers

　　HG/T2287-2008 Printing rubber roller

　　GB/T 23659-2017 Copier rollers for copiers

　　HG/T2013-2001 Cots Part III: Fabric Pre-shrinking Rubber Blankets

　　HG/T3954-2007 Metallurgical rubber roller

　　HG/T 2447-2003 Cots Part 4: Printing and Dyeing Cots

　　HG/T3953-2007 Rubber roller for woodworking machinery

　　HG/T2697-2017 Cots Part 2: Polyurethane Cots

　　ISO7267-2-2008 Determination of Surface Hardness of Cots Part 2: Method of Shore Durometer Type