课题围绕“UHMWPE 管材的短流程拉伸流变挤出装置、管材模具的设计；具有阻燃、抗静电、导热耐磨功能的 UHMWPE 管材专用树脂开发；UHMWPE 复合管成型加工 成套集成技术的工程示范线的构建”等关键技术展开研究。 突破了高缠结 UHMWPE 材料的解缠，黏度分子量测定关键 技术，研发出具有抗静电、导热耐磨、阻燃功能的 UHMWPE 管材专用料，构建 UHMWPE 管材挤出示范线、产品成功应 用于矿渣输运工程，用户评价良好。主要研究内容包括：1） 利用低密度聚烯烃蜡和含氟助剂的解缠性能，改善 UHMWPE 流动性和加工性，突破 UHMWPE 耐磨管材挤出 成型加工技术；2）通过纳米无机增强技术和拉伸强化分散 技术，强化 UHMWPE 共混体系球晶尺寸的微细均化，有效 增强了 UHMWPE 共混体系机械性能，提高 UHMWPE 复合 材料的耐磨性能和自润滑性能；3）建立了 1 条稳定运行的 短流程高效 UHMWPE 管材挤出生产线，形成了 2 项 UHMWPE 管材及功能化管材制品的企业标准，填补国内 UHMWPE 管材成型技术空白。目前 UHMWPE 管材（DN 32-120mm）挤出线速度达 14.5-30 m/h，管材拉伸强度达 33 MPa，断裂伸长率达 304%，阻燃性能达 V-0，表面电阻率小 于 106Ω，磨耗量小于 18 mg/1000r，满足工业化应用需求。 课题共申请发明专利 18 件，其中获授权 2 件，发表研究论 文 6 篇。创新点：课题成功研发出适于 UHMWPE 管材、棒 材、板材挤出成型的装备、模头和芯棒，有效提高制品挤出 过程稳定性，实现 UHMWPE 复合管材连续高效挤出，挤出 线速度达 14.7m/h，在合作企业获得推广，执行期内完成 1.59 亿销售，经济效益良好。

The project revolves around the design of short-flow extensional rheological extruder equipment and pipe molds, the development of special resins for flame-retardant, antistatic, thermally conductive and wear-resistant pipes, the construction of an engineering demonstration lines for composite pipe forming and installation, and other key technologies to carry out systematic and comprehensive research work. The main works include: 1) Low-density polyolefin wax and fluorine-containing additives were employed as detangling agents to improve the fluidity and processability of UHMWPE, and facilitate the extrusion molding of UHMWPE wear-resistant pipes. 2) Nano-inorganic reinforcement technology and tensile strengthening dispersion technology were used to strengthen the fine homogenization of the spherulite size of the UHMWPE blend system, and to improve the wear resistance of the UHMWPE pipes special resin and self-lubricating performance. 3) A stable operation short-flow and high-efficiency extrusion process for UHMWPE pipes fabrication was established. And 2 enterprise standards for extreme rheological behavior UHMWPE pipes and functional pipe products were made. These technological achievement promote the technological revolution of efficient extrusion of UHMWPE pipes. At present, the online extrusion speed of UHMWPE pipes (DN 32-120 mm) can be as high as 14.5-30 m/h, the mechanical properties of the pipes possess the tensile strength of 33 MPa, the elongation at break of 304%, in addition, the double-resistance pipe shows V0-grade flame-retardant performance. The surface resistivity is less than 106 Ω, and the mechanical tensile strength and abrasion resistance can meet the needs of industrial applications. 18 invention patents were accepted and 6 papers were published. Innovation points: The project can realize continuous and efficient extrusion molding of pure UHMWPE pipes with an extrusion molding speed of 14.7 m/h. And matching the special die and mandrel for assembly, effectively improve the stability of the product during the extrusion process. In addition, cooperative enterprises intensified their efforts to promote industrialization and industry technology leadership, and exceeded the indicators of project division of tasks. The cooperative enterprises reached an economic benefit of 159 million.