A kind of polyurethane filling material with high water content and low heat generation for coal mine and its preparation method

A filling material and low heat generation technology, which is applied in the field of high water content and low heat generation polyurethane filling material for coal mines and its preparation field, can solve the problems of insufficient compressive strength, high foaming temperature, pollute the environment, etc., and can achieve adjustable foaming ratio , the effect of strong permeability and low viscosity

Active Publication Date: 2018-07-03
SHANXI YUBANG NEW POWER SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing polyurethane filling materials for coal mines generally have problems such as strong odor, polluting the environment, insufficient compressive strength and too high foaming temperature, and there are great potential safety hazards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Component A selects polyether polyol 220A: 350kg and 330N: 500kg; polyester polyol 3152: 200kg; triethanolamine: 100kg; amine catalyst triethylenediamine: 1.5kg; organometallic catalyst T-12: 0.6kg ; plasticizer dibutyl phthalate 5kg; flame retardant TCEP: 150kg and DMMP: 50kg; emulsifier phenylethylphenol polyoxyethylene ether: 5kg; physical foaming agent 141B: 200kg; chemical foaming agent water : 20kg; water: 300kg. Add each monomer material into the reaction kettle in turn, and mix for 2.5 hours at a temperature of 25° C. and a stirring speed of 100 r / min to obtain a combined material.

[0033] Component B is polymethylene polyphenylisocyanate PM200: 700kg, PM400: 300kg and dichloromethane: 50kg; acetate: 50kg from Yantai Wanhua Polyurethane Co., Ltd. The monomer materials were sequentially added into the reactor, and mixed for 2.5 hours at a temperature of 25° C. and a stirring speed of 100 r / min to obtain a combined material.

[0034] Mix components A and B with...

Embodiment 2

[0036] Component A: polyether polyol 210: 300kg and 330N: 400kg; polyester polyol AK-POL-3002: 200kg; flame retardant polyether polyol FR-7190: 100kg; triethanolamine: 80kg; amine catalyst triethylene Diamine: 1.0kg; organometallic catalyst T-12: 0.8kg; plasticizer dibutyl phthalate: 5kg; flame retardant TCEP: 150kg and TEP: 80kg; antistatic agent emulsifier phenethylphenol Polyoxyethylene ether: 10kg; physical blowing agent: 150kg; water: 150kg. The monomer materials were sequentially added into the reactor, and the combined materials obtained were mixed for 2.5 hours at a temperature of 15° C. and a stirring speed of 200 r / min.

[0037] Component B is polymethylene polyphenyl isocyanate PM200: 800kg, PM400: 200kg and acetate: 50kg from Yantai Wanhua Polyurethane Co., Ltd. The monomer materials were sequentially added into the reactor, and the combined materials obtained were mixed for 1.5 hours at a temperature of 30° C. and a stirring speed of 300 r / min.

[0038] Mix comp...

Embodiment 3

[0040] Component A takes polyether polyol 210: 150kg, 220A: 210kg and 330N: 440kg; polyester polyol AK-POL-3002: 100kg; flame-retardant polyether polyol FR-7190: 100kg; triethanolamine: 85kg; Catalyst triethylenediamine: 2.5kg; organometallic catalyst T-12: 0.6kg; flame retardant TCPP: 170kg and DMMP: 50kg; emulsifier phenylethylphenol polyoxyethylene ether: 15kg; physical blowing agent: 50kg; chemical blowing agent: 180kg; water: 150kg. The monomer materials were sequentially added into the reactor, and the combined materials obtained were mixed for 3 hours at a temperature of 20° C. and a stirring speed of 250 r / min.

[0041] Component B is polymethylene polyphenylisocyanate PM200: 750kg, PM400: 250kg and acetate: 50kg from Yantai Wanhua Polyurethane Co., Ltd. The monomer materials were sequentially added into the reactor, and mixed at a temperature of 25° C. and a stirring speed of 240 r / min for 1.5 hours to obtain a combined material.

[0042] Mix components A and B at h...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
hydroxyl valueaaaaaaaaaa
compressive strengthaaaaaaaaaa
Functional group degreeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of polymer material synthesis, and particularly relates to a coal mine high-water-content and low-heat-generation polyurethane filling material and a preparation method thereof. The filling material is formed by carrying out slurry injecting foaming on a double-liquid type polymer component A and a component B, wherein the component A and the component B are subjected to mixing casting on a region to be filled according to a mass ratio of 0.5-1.5:1 during the use, the component A is a combination material of a polyether or polyester polyol and an auxiliary agent, and the component B is a combination material adopting an organic polyisocyanate compound as the main body. According to the present invention, the filling material has characteristics of low viscosity, good fluidity, green environmental protection, high compressive strength and high foaming ratio; after the foaming, due to the high water content of the material, the material has excellent bearing capacity and excellent deformation capacity, such that the problems of top coal breaking, caving and the like during the tunneling process can be effectively avoided; and the safety factor of the underground-mine operation is significantly improved through the low foaming temperature during the slurry injecting process.

Description

technical field [0001] The invention relates to a material used for filling coal (rock) bodies in coal mines and related industries, especially [0002] The invention relates to a polyurethane filling material with high water content and low heat generation for coal mines and a preparation method thereof. Background technique [0003] In the coal mining industry, there are often abandoned old holes and slippery holes (coal bunkers). The roof of the roadway in the working face needs to be filled and sealed, and have a relatively high compressive strength; However, the existing polyurethane filling materials used in coal mines have a strong odor, which will cause harm to personnel and pollute the environment, and the reaction temperature generally exceeds 100°C, which is likely to cause spontaneous combustion of organic polyurethane foam materials, and even explosion of gas and coal, resulting in safety accidents. . Therefore, insufficient compressive strength and high foami...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08J9/14C08J9/08
CPCC08G18/3281C08G18/4018C08G18/4816C08G18/6622C08G18/7664C08J9/08C08J9/141C08J9/144C08J9/146C08J2203/184C08J2375/06C08J2375/08C08G2110/0008
Inventor 闫宇欣林鹏柏广峰薛纪波
Owner SHANXI YUBANG NEW POWER SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap