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High-flame-retardancy polyurethane gas hole sealing material for coal mine and preparation method of high-flame-retardancy polyurethane gas hole sealing material

A sealing material and high flame retardant technology, applied in the field of polyurethane, can solve the problems of difficult to meet the flame retardant requirements and high addition amount, and achieve the effects of good adhesion, good flame retardant performance and stable effect

Inactive Publication Date: 2017-06-13
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional way to improve the flame retardant performance of polyurethane foam is to add flame retardant elements such as halogen, nitrogen, phosphorus, and antimony to the foam. However, this method has a high amount of addition, and it is difficult to meet the flame retardant requirements under the premise of ensuring the physical properties of polyurethane.

Method used

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  • High-flame-retardancy polyurethane gas hole sealing material for coal mine and preparation method of high-flame-retardancy polyurethane gas hole sealing material
  • High-flame-retardancy polyurethane gas hole sealing material for coal mine and preparation method of high-flame-retardancy polyurethane gas hole sealing material
  • High-flame-retardancy polyurethane gas hole sealing material for coal mine and preparation method of high-flame-retardancy polyurethane gas hole sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Prepare 100 kg of component A material, respectively weigh 35 kg of polyether polyol (SA460, Bluestar Dongda), 5 kg of polyether polyol (DL400, Bluestar Dongda), polyester polyol (B175 , a Novel) 10 kg, foam stabilizer (L6950, Momentive, USA) 2 kg, water 1.5 kg, N,N-dimethylcyclohexylamine 0.2 kg, N,N-dimethylbenzylamine 0.8 kg, 1 kg of Dabco TMR-2 (U.S. Air Chemicals), 20 kg of TCPP, 4.5 kg of expanded graphite flame retardant (LM8089, Qingdao Lianmei), 20 kg of fluorodichloroethane, and the weighed polyether polyol , polyester polyol, water, foam stabilizer, catalyst, and flame retardant are put into a mixing tank and stirred, then a physical foaming agent is added, and stirred evenly at room temperature. After sampling and testing pass, it can be loaded into barrels.

[0030] (2) Use 44V20 (Bayer) for the preparation of component B, 100 kg.

[0031] The components A and B are mixed according to the weight ratio of A:B=100:100 to prepare the highly flame-retardan...

Embodiment 2

[0033] (1) Prepare 100 kg of component A material, weigh 42 kg of polyether polyol (450L, Bluestar Dongda), 7.5 kg of polyether polyol (DL1000, Bluestar Dongda), polyester polyol (B503 , Novo) 14 kg, foam stabilizer (B8545, Evonik Degussa) 3 kg, water 2 kg, N,N-dimethylbenzylamine 0.6 kg, Dabco TMR-2 (American Air Chemicals) 0.7 kg , DBU (1,8-diazacycloundecene) 0.2 kg, expanded graphite flame retardant (LM8089, Qingdao Lianmei) 12 kg, fluorodichloroethane 18 kg, weighed polyether Polyols, polyester polyols, water, foam stabilizers, catalysts, and flame retardants are put into a mixing tank and stirred, then a physical foaming agent is added, and stirred evenly at room temperature.

[0034] (2) Use PM200 (Yantai Wanhua) for the preparation of component B, 100 kg.

[0035] The components A and B are mixed according to the weight ratio of A:B=100:100 to prepare the highly flame-retardant polyurethane gas sealing material for coal mines.

Embodiment 3

[0037] Prepare 100 kg of component A material, weigh 38.3 kg of polyether polyol (YNW4110, Yinuowei new material), 9 kg of polyether polyol (MN1000, Bluestar Dongda), and polyester polyol (PS3152, Si Taipan) 8 kg, foam stabilizer (L6952, American Momentive) 1 kg, water 0.8 kg, N,N-dimethylbenzylamine 0.4 kg, Dabco TMR-2 (American Air Chemicals) 0.5 kg, TEP 25 kg, Expanded graphite flame retardant (LM8089, Qingdao Lianmei) 10 kg, 1 fluorodichloroethane 7 kg, weighed polyether polyol, polyester polyol, water, foam stabilizer, catalyst, flame retardant Put the agent into the mixing tank and stir, then add the physical foaming agent, stir evenly at room temperature, after the sampling test is qualified, it can be loaded into barrels.

[0038] (2) To prepare component B, use M20S (BASF), 100 kg.

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Abstract

The invention relates to the technical field of polyurethane, in particular to a high-flame-retardancy polyurethane gas hole sealing material for a coal mine and a preparation method of the high-flame-retardancy polyurethane gas hole sealing material. The hole sealing material is prepared from a component A and a component B, wherein the component A comprises polyhydric alcohol, water, an adjuvant, a flame retardant and a physical foaming agent; the component B is polymethylene polyphenyl isocyanate. Due to the formula design, a high-flame-retardancy polyurethane material which is high in flame retardancy, stable in effect and applied to gas hole sealing is obtained by compounding the polyhydric alcohol, the adjuvant and the flame retardant, and has the advantages of normal temperature reaction, adjustable reaction speed, adjustable foaming rate and high flame retardancy; foam produced by the high-flame-retardancy polyurethane material is high in flame retardancy, high in bonding strength to a coal and rock mass, high in shear strength and toughness after being bonded and impact-resistant; relevant raw materials are low in odor and cannot generate any toxic gas, and the use and environmental protection requirements of the gas hole sealing material can be completely met.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a highly flame-retardant polyurethane gas sealing material for coal mines and a preparation method thereof. Background technique [0002] At present, the commonly used gas sealing materials mainly include yellow mud sealing materials, cement mortar sealing materials and polyurethane sealing materials. Among them, the softness and hardness of yellow mud sealing materials are not easy to control, and the curing time is long, so they cannot be well sealed. Effect: The fluidity of the cement mortar sealing material is poor, it is not easy to penetrate into small gaps, it is easy to cause air leakage, the setting time is long, and the operation is complicated. The polyurethane sealing material is more and more used in the treatment of underground gas drainage due to its characteristics of large expansion ratio, good sealing, strong cohesive force, and adjustable curing time. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08K5/521C08K7/24C08J9/14C08J9/08C09K8/44C08G101/00
CPCC08G18/7671C08G18/4018C08G18/4812C08G18/4816C08G2101/00C08J9/08C08J9/144C08J2203/02C08J2203/142C08J2203/184C08K5/521C08K7/24C09K8/426C09K8/44
Inventor 徐军郝德开唐国涛朱文静刘玄
Owner SHANDONG INOV NEW MATERIALS CO LTD
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