Railway Engineering Research Institute of China Academy of Railway Sciences Corporation Limited

China

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        World 1
IPC Class
C08G 18/48 - Polyethers 2
E01B 3/44 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from other materials only if the material is essential 2
B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers 1
B29C 70/28 - Shaping operations therefor 1
C08G 101/00 - Manufacture of cellular products 1
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Found results for  patents

1.

Fiber-reinforced rigid polyurethane foam composite railway sleeper with high fiber content and manufacturing method thereof

      
Application Number 16326219
Grant Number 10538615
Status In Force
Filing Date 2017-08-14
First Publication Date 2019-06-20
Grant Date 2020-01-21
Owner
  • RAILWAY ENGINEERING RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED (China)
  • CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED (China)
Inventor
  • Niu, Bin
  • Zeng, Zhibin
  • Su, Yonghua
  • Zhao, Tibo

Abstract

3 and a fiber content greater than 60% is manufactured.

IPC Classes  ?

  • B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
  • C08G 18/08 - Processes
  • C08G 18/48 - Polyethers
  • C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
  • C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
  • E01B 3/44 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from other materials only if the material is essential
  • B29C 70/28 - Shaping operations therefor
  • C08G 101/00 - Manufacture of cellular products

2.

HIGH-FIBER-CONTENT FIBER-REINFORCED RIGID POLYURETHANE FOAM COMPOSITE RAILWAY SLEEPER AND METHOD FOR MANUFACTURING SAME

      
Application Number CN2017097346
Publication Number 2018/033041
Status In Force
Filing Date 2017-08-14
Publication Date 2018-02-22
Owner
  • RAILWAY ENGINEERING RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED (China)
  • CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED (China)
Inventor
  • Niu, Bin
  • Zeng, Zhibin
  • Su, Yonghua
  • Zhao, Tibo

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.

IPC Classes  ?

  • E01B 3/44 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from other materials only if the material is essential
  • C08G 18/48 - Polyethers