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Polyurethane self-endothermic low-temperature filling material and preparation method thereof

A technology of filling material and polyurethane, which is applied in the field of polyurethane self-absorbing low-temperature filling material and its preparation, can solve problems such as insufficient storage stability, foam crisp temperature, and high corrosiveness of raw materials, and solve problems such as poor flame retardancy, Easy transportation and good fluidity

Active Publication Date: 2015-03-25
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a polyurethane self-absorbing heat-absorbing low-temperature filling material, which solves the problems of traditional filling materials such as high corrosiveness of raw materials, irritating smell when foaming, insufficient storage stability, and relatively brittle foam, as well as common polyurethane materials. The problem of high internal temperature and poor flame retardancy; the invention also provides its preparation method

Method used

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  • Polyurethane self-endothermic low-temperature filling material and preparation method thereof
  • Polyurethane self-endothermic low-temperature filling material and preparation method thereof
  • Polyurethane self-endothermic low-temperature filling material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The polyurethane self-absorbing heat low-temperature filling material is prepared from the following components according to the following steps:

[0027] (1) Prepare 100Kg of component A material, weigh polyether polyol a (3 functionality, molecular weight 3500, EO accounts for 15%) 24.6Kg, polyether polyol b (4 functionality, molecular weight 350 ethylenediamine based polyether polyol) 36.7Kg, foam stabilizer (L6950, American Momentive) 1.2Kg, water 24.6Kg, pentamethyldiethylenetriamine 0.3Kg, dimethylaminoethoxyethanol 0.3Kg, water-soluble Flame retardant (FR425, Suzhou Anhongtai) 12.3Kg, put the weighed polyether polyol and water into the mixing tank and stir, then add the weighed foam stabilizer, catalyst, flame retardant, add the reaction In the kettle, stir evenly at room temperature, and after the sampling test is qualified, it can be loaded into barrels.

[0028] (2) Prepare 100Kg of component B material, put accurately measured polymethylene polyphenyl polyis...

Embodiment 2

[0031] The polyurethane self-absorbing heat low-temperature filling material is prepared from the following components according to the following steps:

[0032] (1) Prepare 100Kg of component A material, weigh polyether polyol a (3 functionality, molecular weight 6000, EO accounts for 25%) 23.5Kg, polyether polyol b (4 functionality, molecular weight 430 ethylenediamine polyether polyol) 19.3Kg, foam stabilizer (B8532, Evonik Degussa) 0.8Kg, water 42.7Kg, pentamethyldiethylenetriamine 0.2Kg, trimethylenediamine 0.3Kg, dimethyl Aminoethoxyethanol 0.4Kg, water-soluble flame retardant (FR425, Suzhou Anhongtai) 12.8Kg, put the weighed polyether polyol and water into the mixing tank and stir, then add the weighed foam stabilizer , catalyst, and flame retardant are added to the reaction kettle in turn, stirred evenly at room temperature, and can be loaded into barrels after sampling and testing are qualified.

[0033] (2) Prepare 100Kg of component B material, and accurately measu...

Embodiment 3

[0036] The polyurethane self-absorbing heat low-temperature filling material is prepared from the following components according to the following steps:

[0037] (1) Prepare 100Kg of component A material, weigh polyether polyol a (3 functionality, molecular weight 5000, EO accounts for 15%) 24.5Kg, polyether polyol b (4 functionality, molecular weight 350 ethylenediamine polyether polyol) 24.5Kg, foam stabilizer (L6970, American Momentive) 1Kg, water 44.1Kg, dimethylaminoethoxyethanol 1Kg, water-soluble flame retardant (FR425, Suzhou Anhongtai) 4.9Kg, Put the weighed polyether polyol and water into the mixing tank and stir, then add the weighed foam stabilizer, catalyst, and flame retardant, and add them to the reactor in turn, stir evenly at room temperature, and after sampling and testing pass, Ready to pack.

[0038] (2) To prepare 100Kg of component B material, put accurately measured polymethylene polyphenyl polyisocyanate 44V20 (Bayer) 90Kg, flame retardant TCPP 10Kg in...

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Abstract

The invention belongs to the technical field of preparation of polyurethane materials, and particularly relates to a polyurethane self-endothermic low-temperature filling material and a preparation method thereof. The polyurethane self-endothermic low-temperature filling material consists of a component A and a component B, wherein the component A consists of polyol, water, an auxiliary agent and a fire retardant; the component B consists of polyisocyanate and a fire retardant. The polyol, the auxiliary agent, the fire retardant and the polyisocyanate are selected, a large amounts of water is added into a reaction system, and heat generated by the reaction system is taken away through evaporation of the unreacted water, so that the internal reaction temperature is not higher than 95 DEG C and the problem of poor fire retardance is solved at a time; the polyurethane self-endothermic low-temperature filling material is good in fire retardance, and liquid raw material is convenient to transport, low in viscosity, good in fluidity and good in storage stability; the raw material is environment-friendly and pollution-free, does not contain a volatile solvent, does not produce any toxic gas, and is harmless to a human body; the preparation method is simple and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of polyurethane material preparation, and in particular relates to a polyurethane self-absorbing heat low-temperature filling material and a preparation method thereof. Background technique [0002] With the large-scale mining of coal mines in my country, it is often encountered that the roadway and the roof of the coal mining face are under high pressure, the top coal is broken, and the problem of collapse occurs during the excavation process, and then the filling material is injected into the upper cavity of the roof caving area, and then the roadway surrounding Grouting reinforcement, excavation and mining will be carried out after the roof of the roadway has fallen and the surrounding rock at the side is reinforced; on the other hand, the cavity in the goaf is likely to accumulate gas and cause explosion hazards, so the goaf needs to be filled. At present, phenolic materials, urea-formaldehyde materials o...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/50C08G18/48C08K5/521C08G101/00
CPCC08G18/482C08G18/4829C08G18/5024C08G18/7664C08K5/521C08G2110/0083
Inventor 郝德开张丽唐国涛王超边宪磊
Owner SHANDONG INOV NEW MATERIALS CO LTD
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