Title:
PROCESSING METHOD FOR HIGH-PRESSURE-RESISTANT POLYURETHANE WINDING PULTRUSION PIPELINE
Document Type and Number:
WIPO Patent Application WO/2023/108802
Kind Code:
A1
Abstract:
A processing method of a high-pressure-resistant polyurethane winding pultrusion pipeline. The method comprises: coating a core mold with a pipeline lining material to form a tubular lining layer, and annularly winding the surface of the lining layer with fibers to form an annular fiber winding layer; performing cross winding on the surface of the annular fiber winding layer with fibers to form a cross fiber winding layer; and entering a dipping process, injecting double-component polyurethane material into a pressurized dipping process under high pressure to carry out permeation dipping treatment, and after the dipping is completed, entering a curing process for polyurethane curing treatment at a high temperature to obtain a corresponding cured high-pressure-resistant polyurethane winding pultrusion pipeline. According to the processing method, the defect of water leakage caused by micro-cracks in the pipeline can be effectively avoided, and the effects of super high-pressure resistance, water leakage prevention and the like of the pipeline are realized.
Inventors:
WANG PENGYUE (CN)
HUANG JIAN (CN)
DING JIE (CN)
QIAN YANG (CN)
WANG CHAOFENG (CN)
HUANG JIAN (CN)
DING JIE (CN)
QIAN YANG (CN)
WANG CHAOFENG (CN)
Application Number:
PCT/CN2021/141423
Publication Date:
June 22, 2023
Filing Date:
December 27, 2021
Export Citation:
Assignee:
ERA CO LTD (CN)
International Classes:
B29C70/54; B29C70/52; F16L9/14; F16L57/02; B29L23/00
Foreign References:
| CN106641481A | 2017-05-10 | |||
| CN108943773A | 2018-12-07 | |||
| CN101728036A | 2010-06-09 | |||
| US20080210329A1 | 2008-09-04 | |||
| US20170122467A1 | 2017-05-04 |
Attorney, Agent or Firm:
TAIZHOU FANGYUAN PATENT ATTORNEY FIRM (GENERAL PARTNERSHIP) (CN)
Download PDF: