Long glass fiber reinforced hard polyurethane synthetic material sleeper and method for preparing the same

A technology of long glass fiber and rigid polyurethane, which is applied in the direction of rails, other household appliances, household components, etc., can solve the problems of installation accuracy limitation, reduce the amount of consumption, and post-processing difficulties, and achieve easy processing and installation, and improve installation accuracy , the effect of good economic benefits

A technology of long glass fiber and rigid polyurethane, which is applied in the direction of rails, other household appliances, household components, etc., can solve the problems of installation accuracy limitation, reduce the amount of consumption, and post-processing difficulties, and achieve easy processing and installation, and improve installation accuracy , the effect of good economic benefits

CN101323701AInactive Publication Date: 2008-12-17NANJING FORESTRY UNIV
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  • Long glass fiber reinforced hard polyurethane synthetic material sleeper and method for preparing the same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Configuration of Synthetic Materials

[0031] Polyol A is a polyether polyol with ethylene glycol as an initiator;

[0032] Polyol B is a polyether polyol with glycerol as an initiator;

[0033] Polyol C is a polyether polyol with mannitol as an initiator;

[0034] Polyol D is a polyether polyol taking sucrose as a starter;

[0035] The quaternary ammonium salt catalyst is the quaternary ammonium salt generated by the reaction of triethylenediamine and phosphoric acid;

[0036] The metal salt catalyst is zinc isooctanoate;

[0037] I component polyol composition mass fraction

[0038] Polyol A 8

[0039] Polyol B 52

[0040] Polyol C 30

[0041] Polyol D 10

[0042] The amount of quaternary ammonium salt catalyst is 0.3% of the amount of polyol component in component I

[0043] The amount of metal salt catalyst is 0.05% of the amount of polyol component in component I

[0044] The amount of silicone foam stabilizer is 1.6% of the amount of polyol in component I ...

Embodiment 2

[0058] Configuration of Synthetic Materials

[0059] Polyol A is polyether polyol with ethylene glycol and propylene glycol as initiator;

[0060] Polyol B is a polyether polyol with trimethylolpropane as an initiator;

[0061] Polyol C is a polyether polyol with methyl glucoside as an initiator;

[0062] Polyol D is a polyether polyol taking sucrose as a starter;

[0063] The quaternary ammonium salt catalyst is the quaternary ammonium salt generated by the reaction of pentamethyldiethylenetriamine and formic acid;

[0064] The metal salt catalyst is potassium isooctanoate;

[0065] I component polyol composition mass fraction

[0066] Polyol A 12

[0067] Polyol B 58

[0068] Polyol C 25

[0069] Polyol D 5

[0070] The amount of quaternary ammonium salt catalyst is 0.8% of the amount of polyol component in component I

[0071] The amount of metal salt catalyst is 0.2% of the amount of polyol component in component I

[0072] The amount of silicone foam stabilizer ...

Embodiment 3

[0086] Configuration of Synthetic Materials

[0087] Polyol A is a polyether polyol with diethylene glycol as an initiator;

[0088] Polyol B is a polyether polyol with glycerin and trimethylolpropane as initiators;

[0089] Polyol C is a polyether polyol with methyl glucoside as an initiator;

[0090] Polyol D is a polyether polyol taking sucrose as a starter;

[0091] The quaternary ammonium salt catalyst is the quaternary ammonium salt generated by the reaction of two (2-dimethylaminoethyl) ethers and acetic acid;

[0092] The metal salt catalyst is lead acetate;

[0093] I component polyol composition mass fraction

[0094] Polyol A 8

[0095] Polyol B 22

[0096] Polyol C 40

[0097] Polyol D 30

[0098] The amount of quaternary ammonium salt catalyst is 1.3% of the amount of polyol component in component I

[0099] The amount of metal salt catalyst is 0.5% of the amount of polyol component in component I

[0100] The amount of silicone foam stabilizer is 1.8% o...

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Abstract

The invention discloses a sleeper made of hard polyurethane synthesized material intensified by long glass fiber and a preparation method thereof; the sleeper has low densityííand long service life and is easy to be processed and installed, and the preparation method thereof is also simple. The sleeper made of hard polyurethane synthesized material intensified by long glass fiber is made from the following materials by weight proportion: 100 portions of composite material of polyurethane raw liquor and 30 portions to 50 portions of long glass fiber; wherein the composite material of polyurethane raw liquor consists of polyol component I and isocyanate component II, and the weight ratio of the component I to the component II is 1: 1 to 1: 1.25.

Description

technical field [0001] The invention relates to a sleeper and a preparation method thereof, in particular to a long glass fiber reinforced rigid polyurethane synthetic material sleeper and a preparation method thereof. Background technique [0002] Railway is currently one of the most important means of transportation in the world. With the development of railways towards high speed, heavy load and environmental protection, the requirements for rails are getting higher and higher. Sleepers are an important part of rails, and their materials and structures are Constantly developed and updated. Currently used sleepers mainly include wooden sleepers, steel sleepers and concrete sleepers. As a sleeper commonly used in traditional railway tracks, although wood sleepers have the advantages of low cost, high elasticity, light weight, and good insulation, they also have insurmountable shortcomings, mainly in: easy weathering and cracking, short service life, generally only 15 year...

Claims

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Application Information

Patent Timeline
17 Dec 2008
Publication
CN101323701A
IPC
C08L75/04; C08K7/14; C08J5/04; C08G18/40; E01B3/44; B29C70/34; B29B7/00; C08G101/00; B29L31/10
Inventors
罗振扬; 李书龙