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Combined polyether for high flame-retardant water heater water tank and its preparation method and application

A flame retardant water heater combined with polyether technology, which is applied in the field of polyurethane, can solve the problems of increased cells, etc., and achieve the effects of improving fluidity, improving flame retardant performance, and increasing crosslinking density

Active Publication Date: 2019-08-20
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its low boiling point (15°C), HFC-245fa can improve the fluidity of the foam during the foaming process, and to a certain extent, it will cause the increase of cells inside the foam; HFC-365mfc has a boiling point higher than 25°C, and foaming equipment Can be used without major modification, however it is somewhat flammable

Method used

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  • Combined polyether for high flame-retardant water heater water tank and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Prepare component A, 200kg, weigh polyether polyol A: YNW-7001 (Shandong Yinuowei New Material Co., Ltd.), 42kg, polyether polyol B: YNW-482 (Shandong Yinuowei New Material Co., Ltd.) Materials Co., Ltd.), 37kg, polyester polyol C: PS-7001 (Nanjing Jinling Stepan Chemical Co., Ltd.), 27kg, foam stabilizer: Y-16268 (Maitive High-tech Materials Co., Ltd.), 2.2kg, chemical hair Foaming agent: deionized water, 2.3kg, catalyst: PC5, 0.5kg, PC8, 1.3kg, Y-27, 1.5kg, PC41, 0.6kg, PC46, 0.6kg, flame retardant: TCPP, 21kg, TEP 21kg, Physical blowing agent: a mixture of HFC-365mfc and HFC-245fa in a mass ratio of 95:5, a total of 43kg.

[0043] Add the weighed polyether polyol A, polyether polyol B, polyester polyol C, foam stabilizer, chemical foaming agent, catalyst, flame retardant and physical foaming agent into the reaction kettle in sequence, Stir at room temperature for 0.5 hour and mix thoroughly.

[0044] (2) B component diphenylmethane diisocyanate, 240kg.

[0045...

Embodiment 2

[0047] (1) Prepare component A, 200kg, weigh polyether polyol A: YNW-7001 (Shandong Yinuowei New Material Co., Ltd.), 36kg, polyether polyol B: YNW-482 (Shandong Yinuowei New Material Co., Ltd.) Material Co., Ltd.), 41kg, polyester polyol C: PS-7001 (Nanjing Jinling Stepan Chemical Co., Ltd.), 25kg, foam stabilizer: Y-16268 (Maitive High-tech Materials Co., Ltd.), 2.5kg, chemical hair Foaming agent: deionized water, 2.4kg, catalyst: PC5, 0.6kg, PC8, 1.4kg, Y-27, 1.6kg, PC41, 0.4kg, PC46, 1.1kg, flame retardant: TCPP, 23kg, TEP 23kg, Physical foaming agent: a mixture of HFC-365mfc and HFC-245fa at a mass ratio of 95:5, a total of 42kg.

[0048]Add the weighed polyether polyol A, polyether polyol B, polyester polyol C, foam stabilizer, chemical foaming agent, catalyst, flame retardant and physical foaming agent into the reaction kettle in sequence, Stir at room temperature for 0.5 hour and mix thoroughly.

[0049] (2) B component diphenylmethane diisocyanate, 260kg.

[0050] ...

Embodiment 3

[0052] (1) Prepare component A, 200kg, weigh polyether polyol A: YNW-7001 (Shandong Yinuowei New Material Co., Ltd.) 41kg, polyether polyol B: YNW-482 (Shandong Yinuowei New Material Co., Ltd.) Co., Ltd.), 41kg, polyester polyol C: PS-7001 (Nanjing Jinling Stepan Chemical Co., Ltd.), 20kg, foam stabilizer: Y-16268 (Momentive High-tech Materials Co., Ltd.), 2.8kg, chemical foaming Agent: deionized water, 2.4kg, catalyst: PC5, 0.5kg, PC8, 1.2kg, Y-27, 1.5kg, PC41, 0.5kg, PC46, 1.1kg, flame retardant: TCPP, 21.5kg, TEP 21.5kg , Physical foaming agent: HFC-365mfc and HFC-245fa according to the mass ratio of 95:5 mixture of a total of 45kg.

[0053] Add the weighed polyether polyol A, polyether polyol B, polyester polyol C, foam stabilizer, chemical foaming agent, catalyst, flame retardant and physical foaming agent into the reaction kettle in sequence, Stir at room temperature for 0.5 hour and mix thoroughly.

[0054] (2) B component polymethylene polyphenylisocyanate, 250kg.

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Abstract

The invention belongs to the technical field of polyurethane, and specifically relates to premixed polyols for a high-fire-retardant water tank of a water heater, a preparation method and application thereof. The premixed polyols for the high-fire-retardant water tank of the water heater comprises a component A and a component B, wherein the component A comprises 15-25% by weight of polyether polyol A, 15-25% by weight of polyether polyol B, 10-15% by weight of polyester polyol C, 1-2% by weight of a foam stabilizer, 1-2% by weight of a chemical foaming agent, 1-2.7% by weight of a catalyst, 20-30% by weight of a fire retardant, and 18-25% by weight of a physical foaming agent; the component B is polydiphenyl methane diisocyanate. According to the premixed polyols for the high-fire-retardant water tank of the water heater, the independently-prepared polyether and fire-retardant polyester are matched, and fire retardant is added, so that the obtained polyurethane foam is high strength and high in fire resistance; meanwhile, the product has the characteristics of being high in heat insulation effect, smooth in surface, and free from defects.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a combined polyether for a water heater tank with high flame retardancy and its preparation method and application. Background technique [0002] At present, the plastic foam industry dominated by polyurethane foam is the main battlefield for the elimination of HCFCs in China, and as the main force of HCFC series products, HCFC-141b is bound to be eliminated. [0003] Hydrofluorocarbons as alternatives to chlorofluorocarbons include 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1,1,1,3,3-pentafluorobutane (HFC-365mfc) etc. These compounds do not contain chlorine atoms in their molecules, and their ODP (ozone depletion potential) value is zero. Due to its low boiling point (15°C), HFC-245fa can improve the fluidity of the foam during the foaming process, and to a certain extent, it will cause the increase of cells inside the foam; HFC-365mfc has a boiling point hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08J9/14C08J9/08C08K5/521C08G101/00
Inventor 张佳佳徐业峰念以亭张丽萍单明礼
Owner SHANDONG INOV NEW MATERIALS CO LTD
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