| Study on Nano-calcium Carbonate/NR Composite Prepared by Latex Co-agglomeration under Pressure |
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| DOI： |
| Key Words: NR latex ； nano-calcium carbonate ； composite ； co-agglomeration ； dispersion |
| Author Name | Affiliation | | WU Ming-sheng | Qingdao University of Science and Technology | | LAI Qing-cun | Qingdao University of Science and Technology，Qingdao | | ZOU Yu-rong | Qingdao University of Science and Technology，Qingdao |
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| Abstract: |
| The dispersion of nano-calcium carbonate was prepared by high pressure homogenizer，and the nano-calcium carbonatelNR composite was prepared by latex co-agglomeration under pressure. The microstructure of blended latex filled with nano-calcium carbonate，the physical properties of the resulted films， and the Mooney viscosity，dynamic modulus（G'） and loss factor（tanδ） of the composites were investigated. The results showed that， the dispersion of nano-calcium carbonate treated with high pressure homogenizer was good：low settlement， small particle size，narrow particle distribution and good storage stability. After co-agglomeration under pressure，the dispersion of nano-calcium carbonate in the compound was good. It was found that by using pressure during co-agglomeration，the physical properties of the composite latex film were improved significantly，the Mooney viscosity and G' at low strain amplitude of the compound increased，the tanδ 0f the compound was reduced，and the interaction between rubber and nano-calcium carbonate was improved. |
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