ELASTIC CHIP COMPOSITION FOR FLOOR LAYER USING RECYCLED NATURAL RUBBER CAPABLE OF PROVIDING AN ELASTIC CHIP MAINTAINING INHERENT ELASTICITY FOR LONG TIME WHILE MINIMIZING CHEMICAL BAD INFLUENCE, AND A MANUFACTURING METHOD OF AN ELASTIC CHIP FOR FLOOR LAYER USING THE SAME

摘要

PURPOSE: An elastic chip composition is provided to maintain stable elasticity even under various mechanical and chemical impacts, long term solar light, or temperature changes between winter and summer.;CONSTITUTION: An elastic chip composition using recycled natural rubber comprises 25-35 weight% of desulfurized waste natural rubber, 15-25 weight% of waste natural rubber powder, 10-20 weight% of calcium carbonate of which particle size is 30-50 micron, 15-25 weight% of precipitated calcium carbonate of which particle size is 0.3-5 micron, 0.5-1.0 weight% of peroxides having a mixing ratio of 1:0.10 and 1:0.40, and 0.1-3.0 weight% of performance improver. The waste rubber chip consists of 15-25 % of rubber chips having particle size of 30-50 micron, and residual rubber chips having particle size of 0.3-5 micron.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Color of patterns; (BB) Color of a rubber chip; (CC) Before change; (DD) After chagne; (EE,FF) Yellow; (GG,JJ,MM,PP,SS) Color changed; (HH) Yellow-green; (II) Yellow-green + Yellow; (KK) Orange; (LL) Orange + Red; (NN) Oatmeal; (OO) Brown + Oatmeal; (QQ) Sky-blue; (RR) Blue + Sky-blue + Ivory