Multi-layer co-extrusion cooling pipe and preparation method

• Main Authors: FENG ZHIJIAN, REN HAOPENG
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention discloses a multi-layer co-extrusion cooling pipe and a preparation method. The invention relates to the technical field of cooling pipes, in particular to a cooling water path pipe in anew energy automobile battery pack. The invention provides the multi-layer co-extrusion cooling pipe which is resistant to permeation and environment stress cracking and is suitable for new energy vehicle battery pack heat dissipation application occasions, and the preparation method. A multi-layer structure of the pipe is manufactured through co-extrusion of multiple layers of molds and then curing molding; the pipe comprises at least one protective layer and at least one modified high-density polyethylene (HDPE) layer; the protective layer and the modified HDPE layer are arranged at intervals; bonding layers are arranged between the layers arranged at intervals; and the modified HDPE layer is made of silane crosslinked high-density polyethylene. According to the multi-layer co-extrusioncooling pipe and the prep