Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HIGH-FIBER-CONTENT FIBER-REINFORCED RIGID POLYURETHANE FOAM COMPOSITE RAILWAY SLEEPER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/033041
Kind Code:
A1
Abstract:
Provided are a high-fiber-content fiber-reinforced rigid polyurethane foam composite railway sleeper and a method for manufacturing same; the sleeper is formed by adhesively bonding a plurality of high-fiber-content fiber-reinforced rigid polyurethane foam composite panels (10) by means of a binder (11), and the outer surface of the sleeper is provided with an anti-corrosion paint film (12); the high-fiber-content fiber-reinforced rigid polyurethane foam composite panels (10) employ polyurethane resin as a matrix material and fiber as a reinforcing material. Using such technical means as a low-hydroxyl and low-functionality hybrid polyether polyol and a coupling agent solves the problem of insufficient impregnation of polyurethane resin with reinforcing fiber, thereby increasing the reinforcing-fiber content; it is thus possible to manufacture a fiber-reinforced rigid polyurethane foam material product having a density higher than 840 kg/m3 and a reinforcing-fiber content of more than 60%, compensating for the technical deficiency of fiber-reinforced polyurethane foam composite panels, making their product specifications and performance more diverse, and satisfying different technical requirements.

Inventors:
NIU, Bin (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
ZENG, Zhibin (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
SU, Yonghua (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
ZHAO, Tibo (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
Application Number:
CN2017/097346
Publication Date:
February 22, 2018
Filing Date:
August 14, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
RAILWAY ENGINEERING RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
CHINA ACADEMY OF RAILWAY SCIENCES (Dan Li, No. 2 Daliushu Road Haidian District, Beijing 3, 100083, CN)
International Classes:
E01B3/44; C08G18/48
Foreign References:
CN106120480A2016-11-16
CN205917533U2017-02-01
CN103497503A2014-01-08
CN101323701A2008-12-17
JP2003206502A2003-07-25
Attorney, Agent or Firm:
BEIJING JUNBO INTELLECTUAL PROPERTY AGENT CO., LTD (Dan Li, Room 1607 Building B,Caizhi International Plaza,No. 18 East Zhongguancun Roa, Haidian District Beijing 3, 100083, CN)
Download PDF: