含热熔胶聚烯烃管材的回收方法

• Format: Patent
• Language: Chinese
• Published: 15.06.2016
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MAKING GRANULES OR PREFORMS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PIPES; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

本发明提供一种含热熔胶聚烯烃管材的回收方法，包括：将未辐照含热熔胶热收缩套管的回收管材，采用单螺杆密炼挤出机重新造粒，即密炼机在100-150℃熔融共混后，再采用单螺杆挤出机造粒；挤出步骤：将上述方法得到的回收母料，按0-15％比例添加到相应的外层聚烯烃母料中，所述回收母料的添加量不为0，经机械混合后，利用单螺杆挤出机(配相应的口模、芯棒)在100-150℃下挤出，得到挤出单壁管；辐照步骤：挤出管材在2.0MeV以上能量电子加速器辐射交联，辐照剂量为7.0Mrad-15.0Mrad；扩张步骤：辐照后管材在100-150℃下，采用真空扩张设备或油加热扩张设备或机械设备扩张2-3倍，冷却、定型，得到辐射交联型热收缩套管产品。本发明提供的方法可以对含热熔胶的聚烯烃管材进行回收，以节约成本。