ASTM D4677-1987(2007) Standard Classification for Rubber Compounding Materials&x2014 Titanium Dioxide《橡胶配料的标准分类 二氧化钛》.pdf
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1、Designation: D 4677 87 (Reapproved 2007)Standard Classification forRubber Compounding MaterialsTitanium Dioxide1This standard is issued under the fixed designation D 4677; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This classification covers the compounding materialknown as titanium dioxide. It is generally used in rubbercompound
3、s to impart whiteness to selected products. Typicalchemical and physical properties are included.1.2 This standard does not purport to address all of thesafety problems, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health
4、practices and determine the applica-bility of regulatory limitations prior to use. Table 12. Referenced Documents2.1 ASTM Standards:2D 185 Test Methods for Coarse Particles in PigmentsD 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD 1208 T
5、est Methods for Common Properties of CertainPigmentsD 1394 Test Methods for Chemical Analysis of WhiteTitanium PigmentsD 3720 Test Method for Ratio of Anatase to Rutile inTitanium Dioxide Pigments by X-Ray Diffraction3. Significance and Use3.1 Titanium dioxide is used in rubber compounding as acolor
6、ant to impart whiteness to any desired end product. It isused in sidewalls of automobile tires.3.2 It is chemically inert and slightly basic with a pH of 7.0to 8.0. The free-chalking, weathering properties of anatasetitanium-dioxide provide a (self-cleaning) white appearance inoutdoor applications.4
7、. Basis of Classification4.1 Titanium-Dioxide By Types:4.1.1 Type IAnatase, free-chalking.4.1.2 Type IIRutile, low/medium chalk resistance.4.1.3 Type IIIRutile, high-chalk resistance.5. Composition and Properties5.1 The titanium-dioxide commonly used in rubber is theanatase Type 1 material. It is ge
8、nerally 97 to 99 % TiO2incomposition. Some antase grades have an inorganic surfacetreatment (that is, oxides of aluminum or silicon), some havean organic treatment; most have very little treatment.5.2 The rutile titanium-dioxide consists of many grades fora multitude of end use applications. They ar
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