Abstract:

The mechanical and thermal properties of lignin/LDPE-EVA blends were investigated with different offers of lignin and compatibilizer. The results indicated that the tensile strength of blends was increased to 25.88MPa（increase by 9% compared to the LDPE-EVA）and the decrease of endothermic peak and improvement of degradation were observed with filling 20 parts of lignin. In addition，the introduction of 10 parts of compatibilizer LDPE-g-MAH was the main reason for the continued increase of strength tensile and decrease of endothermic peak，which improved the compatibility of blends.

摘要：

以天然热塑材料木质素和LDPE-EVA为原料，研究了不同木质素以及增容剂含量对木质素/LDPE-EVA共混材料的力学及热性能影响。结果表明，20份木质素与LDPE-EVA共混效果较好，拉伸强度达到最大（25.88 MPa），较LDPE-EVA聚合物提高了9%，且共混物在100 ℃附近的吸热峰出现一定左移（3.6 ℃），降解性能增加；10份增容剂LDPE-g-MAH的加入使体系拉伸强度达到35.66 MPa，较未加增容剂时提高了26.6%，100℃附近的吸热峰进一步左移（2 ℃），降解性能小幅降低，显著提高了共混物的相容性。