T/GBMA 002-2020 Plastics industry-grade heavy calcium carbonate
T/GBMA 002-2020 Plastics industry-grade heavy calcium carbonate
Basic Information
Scope
Scope: The standard specifies the classification, typification, requirements, test methods, inspection rules, marking, labeling, packaging, transportation, and storage requirements for heavy calcium carbonate used in plastics. This standard applies to heavy calcium carbonate used in the plastics industry, which is made from calcite, marble, or limestone through physical grinding, and to surface-modified heavy calcium carbonate for the plastics industry after surface treatment; Main technical content: 1. Scope 2. Normative application documents 3. Molecular formula and relative molecular mass 4. Terms and definitions 5. Classification and typification 6. Requirements 6.1 Appearance 6.2 Technical requirements 7. Test methods 8. Inspection rules 9. Marking and labeling 10. Packaging, transportation, and storage Appendix 1: Test method for contact angle of heavy calcium carbonate