| 废旧胶粉/聚氨酯共混材料的制备及其性能研究 |
| Preparation and Properties of WRP/TPU Blends |
| 投稿时间：2019-05-28 修订日期：2019-05-28 |
| DOI：10.12136/j.issn.1000-890X.2020.08.0584 |
| 中文关键词: 废旧胶粉 聚氨酯 氨基甲酸酯 1，4-丁二醇 共混材料 拉伸性能 相容性 |
| 英文关键词: WRP TPU carbamate 1,4-butanediol blend material tensile properties compatibility |
| 基金项目: |
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| 中文摘要: |
| 以—NCO封端的氨基甲酸酯预聚体和废旧胶粉（WRP）为主要原料，采用原位法制备WRP/TPU共混材料，考察WRP含量对WRP/TPU共混材料性能的影响。结果表明：WRP/TPU共混材料中WRP质量分数为0. 02时，TPU的相对分子质量较大及其分布较宽；随着WRP质量分数的增大，WRP/TPU共混材料的拉伸强度和拉断伸长率呈先提高后降低的趋势，WRP质量分数为0. 02时WRP/TPU共混材料的拉伸性能最佳；WRP/TPU共混材料的FTIR谱体现出TPU和WRP的特征峰，且相较于TPU，WRP/TPU共混材料的特征峰向低波数方向移动；WRP与TPU有较好的相容性，WRP/TPU共混材料只有1个玻璃化温度。 |
| 英文摘要: |
| Waste rubber powder（WRP）/polyurethane（TPU） blends were prepared by using in situ method with —NCO terminated carbamate prepolymer and WRP as main materials，and the effect of WRP content on the properties of WRP/TPU blends was investigated. The results showed that，when the mass fraction of WRP was 0. 02，the relative molecular weight of TPU was larger and its distribution was wider.With the increase of the mass fraction of WRP，the tensile strength and elongation at break of WRP/TPU blends increased first and then decreased，and the tensile properties of TPU/WRP blends were the best when the mass fraction of WRP was 0. 02. The FTIR spectra of WRP/TPU blends showed the characteristic peaks of TPU and WRP，and compared with TPU，the characteristic peaks of the FTIR spectra of WRP/TPU blends moved to the direction of low wave number. WRP and TPU had good compatibility，and WRP/TPU blends had only one glass transition temperature. |
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