改性端羟基聚丁二烯液体橡胶光热双重固化材料的制备及性能表征

The Preparation and Characterization of Modified Hydroxy-terminated Polybutadiene Liquid Rubber Photothermal Dual Curing Material

以经过丙烯酰氯改性的端羟基聚丁二烯液体橡胶、铝粉、氯化钾、过氧化苯甲酰(BPO)、光引发剂819作为原料制备了光热双重固化橡胶材料。分析测试了改性端羟基聚丁二烯液体橡胶光热双重固化材料的断裂拉伸强度和吸水率。讨论了光引发剂用量对材料力学性能、吸水性的影响。实验结果表明,随着光引发剂使用量的增加,橡胶材料的断裂拉伸强度降低,吸水能力变差。使用6份和10份光引发剂的光热双重固化材料分别显示了最大断裂拉伸强度(0.69MPa)和最小断裂拉伸强度(0.61MPa),最高吸水率(49.20%)和最低吸水率(25.92%)。

A photothermal dual curing rubber material is prepared with the acrylic acid chloride modified hydroxyl-terminated polybutadiene liquid rubber, aluminum powder, potassium chloride, benzoyl peroxide(BPO) and photoinitiator 819 as the raw materials. The tensile strength and water absorption of the synthesized material are analyzed and tested. The effects of the amount of photoinitiator on the mechanical properties and water absorption of materials are discussed. The experimental results show that as the amount of photoinitiator increases, the tensile strength at break of the rubber material decreases, and the water absorption capacity becomes worse. The photothermal dual curing materials which uses 6 and 10 parts of photoinitiator shows the maximum tensile strength at break(0.69 MPa) and the minimum tensile strength at break(0.61 MPa), and the highest water absorption(49.20%)and the lowest water absorption(25.92%)respectively.