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Special engineering material for reinforcement and preparing method therefor

An engineering material and special technology, applied in the field of special engineering materials for reinforcement and their preparation, can solve the problems of high reaction temperature and high cost

Inactive Publication Date: 2014-03-12
SHANDONG YOUGU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the polyurethane reinforcement materials in the prior art have problems such as high reaction temperature and high cost.

Method used

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  • Special engineering material for reinforcement and preparing method therefor
  • Special engineering material for reinforcement and preparing method therefor
  • Special engineering material for reinforcement and preparing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Component A takes 31Kg of polyoxypropylene diol, 24Kg of polyethylene adipate diol, 19Kg of chain extender 3,3'-dichloro-4,4'-diaminodiphenylmethane, and plasticizer Dioctyl adipate 5.2Kg, flame retardant zinc borate (FB) 19.3Kg, catalyst N, N-dimethylbenzylamine 1.5Kg, weighed polyether polyol, polyester polyol, chain extender Put the agent, plasticizer and flame retardant into the reaction kettle and stir, then add the catalyst and stir fully at room temperature, which is component A.

[0058] B component is toluene diisocyanate.

[0059] Take components A and B and mix them according to the volume ratio of 1:1 to form a consolidated body. Under normal working conditions, its performance indicators are as follows:

[0060] Reaction temperature: 100°C

[0061] Bond strength: 3.1MPa

[0062] Tensile strength: 18MPa

[0063] Compressive strength: 72MPa

[0064] Flame retardancy: Alcohol blowtorch has a flame burning time of 0.16s, a flameless burning time of 3.7s, a...

Embodiment 2

[0066] Component A is polyoxypropylene triol 43Kg, polyethylene adipate propylene glycol ester diol 19Kg, chain extender hydroquinone-β-hydroxyethyl ether 14Kg, plasticizer dioctyl adipate 7.4Kg, Flame retardant zinc borate (FB) 13.7Kg, catalyst N, N-dimethylbenzylamine 2.9Kg, weighed polyether polyol, polyester polyol, chain extender, plasticizer, flame retardant Add it into the reaction kettle and stir, then add the catalyst and stir well at room temperature, which is component A.

[0067] B component is toluene diisocyanate.

[0068] Take components A and B and mix them according to the volume ratio of 2:1 to form a consolidated body. Under normal working conditions, its performance indicators are as follows:

[0069] Reaction temperature: 115°C

[0070] Bond strength: 3.7MPa

[0071] Tensile strength: 23MPa

[0072] Compressive strength: 75MPa

[0073] Flame retardancy: Alcohol blowtorch has a flame burning time of 0.33s, a flameless burning time of 5.2s, an alcohol l...

Embodiment 3

[0075] Component A takes 59Kg of trimethylolpropane polyether, 10Kg of polydiethylene glycol adipate, 8Kg of chain extender hydroquinone-β-hydroxyethyl ether, and 8Kg of plasticizer toluene diphenyl phosphate 8.9Kg, flame retardant chlorinated paraffin 9.5Kg, catalyst N-methylmorpholine 4.6Kg, add the weighed polyether polyol, polyester polyol, chain extender, plasticizer, flame retardant to Stir in the reaction kettle, then add the catalyst and stir fully at room temperature, which is component A.

[0076] B component is toluene diisocyanate.

[0077] Take components A and B and mix them according to the volume ratio of 1:2 to form a consolidated body. Under normal working conditions, its performance indicators are as follows:

[0078] Reaction temperature: 127°C

[0079] Bond strength: 5.8MPa

[0080] Tensile strength: 29MPa

[0081] Compressive strength: 81MPa

[0082] Flame retardancy: Alcohol blowtorch has a flame burning time of 0.65s, a flameless burning time of 7....

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Abstract

The invention relates to a special engineering material for reinforcement and a preparing method therefor. The special engineering material for reinforcement is composed of a component A and a component B, and the volume ratio between the component A and the component B ranges from 1:4 to 4:1. The component A comprises, by weight, 30-80 parts of polyether polyol, 5-25 parts of polyester polyol, 1-20 parts of a chain extender, 5-20 parts of a fire retardant, 5-10 parts of a plasticizer, and 0.2-6 parts of a catalyst. The component B comprises isocyanate and / or a modified derivative of the isocyanate. Compared with a conventional material, the special engineering material for reinforcement has greatly reduced cost, has greatly reduced reaction temperature, and is of improved flame resistance, and a polyurethane consolidating product obtained after a mixing reaction is characterized by super-high mechanical properties, low deformation, high bearing strength and high tensile strength. The deformation is within 10%, the bearing strength can reach more than 70 MPa, and the tensile strength is greater than 16 MPa.

Description

technical field [0001] The invention relates to a special engineering material for reinforcement and a preparation method thereof, more specifically, to an engineering material for polyurethane reinforcement. Background technique [0002] At present, the main safety problems that plague the safe production of coal mines are natural disasters such as bumps and caving in underground geological environments such as roadways. Traditional reinforcement technologies are inefficient, labor-intensive and time-consuming. Make coal mines and other underground projects have great technical difficulties in dealing with problems such as the caving of slabs. [0003] Polyurethane-based new polymer grouting material has the advantages of moderate viscosity, adjustable setting time, light weight after consolidation, low thermal conductivity, and chemical corrosion resistance. It can fundamentally solve the above problems and has been used in many large and medium-sized coal mines. Extensi...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/48C08K3/38C08K5/11C08K5/523C08K5/521
CPCC08G18/6618C08G18/4018C08G18/6607C08G18/7614C08K3/32C08K3/38C08K5/11C08K5/12C08K5/34928C08K5/42C08K5/521C08K5/5333C08K2003/323C08L75/08C08L2201/02C08L91/06C08K5/523
Inventor 刘鹏郭茹张宁宁王红雷
Owner SHANDONG YOUGU NEW MATERIAL TECH CO LTD
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