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Composite material and its preparation method

A technology of composite materials and silicon-aluminum materials, applied in the field of materials, can solve problems such as high maximum reaction temperature and poor safety

Active Publication Date: 2021-07-09
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the material obtained by the method disclosed in this patent application has a higher maximum reaction temperature during the preparation process, and the safety of the preparation process is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] In a second aspect, the present invention provides a method for preparing the composite material of the present invention, the method comprising:

[0037] (1) Mix A component and C component to form a gel material prepolymer;

[0038] (2) Mix and solidify the gel material prepolymer obtained in step (1) with component B.

[0039] In the present invention, preferably, in step (1), the mixing conditions include: the time is 0.1-96h, more preferably 0.5-5h.

[0040] In the present invention, preferably, in step (2), the mixing conditions include: the time is 0.1-30 min, more preferably 0.2-3 min.

[0041] On the other hand, those skilled in the art will appreciate that the present invention provides products made of said composite material, which have both high compressive strength and low maximum reaction temperature.

Embodiment 1

[0052] This example is used to illustrate the composite material of the present invention and its preparation method.

[0053] (1) Preparation of component A

[0054] Add 97kg sodium silicate aqueous solution (content is 47% by weight, modulus is 2.6) in reaction kettle, add 3kg N,N-dimethylaminoethyl glycol during stirring, stir 30min, obtain clear, transparent A component.

[0055] (2) Preparation of polyisocyanate prepolymer

[0056] Add 80kg of polyphenyl polymethylene polyisocyanate to the reaction kettle, add 20kg of polyether polyol during stirring, and stir for 60min to obtain a brown polyisocyanate prepolymer with an NCO content of 23%.

[0057] (3) Preparation of B component

[0058] Add 93kg of polyisocyanate prepolymer into the reaction kettle, add 7kg of diethylene glycol butyl ether acetate during stirring, and stir for 30min to obtain brown transparent component B.

[0059] (4) Preparation of composite materials

[0060] Mix 10 kg of component A and 2 kg of...

Embodiment 2

[0062] This example is used to illustrate the composite material of the present invention and its preparation method.

[0063] (1) Preparation of component A

[0064] Add 90kg of sodium silicate aqueous solution (content: 55% by weight, modulus: 2.8) into the reaction kettle, add 10kg of N,N-dimethylcyclohexylamine during stirring, and stir for 30min to obtain clear and transparent A component .

[0065] (2) Preparation of polyisocyanate prepolymer

[0066] Add 80kg of polyphenyl polymethylene polyisocyanate to the reaction kettle, add 8kg of polyester polyol during the stirring process, and stir for 60min to obtain a brown polyisocyanate prepolymer with an NCO content of 27%.

[0067] (3) Preparation of B component

[0068] Add 90kg of polyisocyanate prepolymer to the reaction kettle, add 10kg of castor oil formate during stirring, and stir for 30min to obtain brown transparent component B.

[0069] (4) Preparation of composite materials

[0070] Mix 10 kg of component A...

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Abstract

The invention relates to the field of material technology, and discloses a composite material and a preparation method thereof. The composite material includes component A, component B and component C, and the weight ratio of component A, component B and component C is 1 : 0.7-0.95: 0.0001-0.4, wherein, component A contains alkaline solution and catalyst, based on the weight of component A, the content of the alkaline solution is 80-99.2% by weight, and the content of the catalyst is 0.8-20% by weight; B component contains polyisocyanate prepolymer and solubilizer, based on the weight of B component, the content of the polyisocyanate prepolymer is 80-99% by weight, the content of the solubilizer It is 1‑20% by weight; component C contains silicon-aluminum materials. The composite material of the invention combines high compressive strength with a low maximum reaction temperature.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a composite material and a preparation method thereof. Background technique [0002] At present, the materials commonly used in dam foundation pit reinforcement, coal mine coal rock mass reinforcement, seepage prevention and plugging, and road subgrade load-bearing filling, based on the consideration of safe production, need to have high compressive strength; at the same time, the safety in the material preparation process is considered problem, it is also necessary to have a low maximum reaction temperature. However, there is no composite material that can combine the characteristics of high compressive strength and low maximum reaction temperature at the same time. [0003] US3607794A discloses the reaction process of organic polyisocyanate and alkali metal silicate solution, and illustrates the influence of different reaction ratios on the performance of the consolidated bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L75/06C08L91/00C08K13/02C08K3/34C08K3/36C08K3/22C08K5/103C08K5/12
CPCC08K3/22C08K3/34C08K3/36C08K5/103C08K5/12C08K13/02C08K2003/2206C08K2003/2227C08K2003/2272C08K2201/003C08L75/06C08L75/08C08L91/00C08K3/00
Inventor 张栋卓锦德董阳文成玉赖世燿
Owner CHNA ENERGY INVESTMENT CORP LTD
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