定向钻穿越3PE防腐层碳纤维复合材料防护技术

3PE carbon fiber composite material protection technology in directional drilling project

尝试通过在3PE防腐层表面涂刷自制的聚乙烯粘接增强剂实现碳纤维/环氧树脂基复合防护层与聚乙烯层的有效粘接。实验结果表明:在3PE防腐层外涂刷聚乙烯粘接增强剂,可以有效改善环氧树脂与聚乙烯层的粘接性,环氧树脂对聚乙烯的室温剪切强度由1.73MPa增至3.02MPa,剥离强度由2.4N/cm增至100.6N/cm。通过弯曲、冲击和耐划伤实验,测试了整个防护体系的性能,结果表明:该复合材料与聚乙烯层间形成有效粘接,且具有良好的柔韧性和抗冲击性能,可以承受130kg载荷的耐划伤测试。

Effective bonding between carbon fiber/epoxy resin matrix composite protection layer and polyethylene layer is achieved with self-made polyethylene adhesive enhancer brushed on the 3PE layer. Experimental results show that the polyethylene adhesive enhancer brushed on the 3PE layer can effectively improve bonding condition between epoxy resin and polyethylene layer, and the room temperature shear strength of epoxy resin on the polyethylene layer increases from 1.73 MPa to 3.02 MPa and peel strength improves from 2.4 N/cm to 100.6 N/cm. Performance of the whole protection system is tested through bending, impact and scratch resistance tests. The results indicate that effective bonding forms between the composite material and polyethylene layer with good flexibility and impact resistance and can bear a scratch resistance test up to a 130-kg load. （6 Figures, 10 References）