Phosphorus-boron heterochain prepolymer block polyurethane flame-retardant regenerated wood-plastic composite material as well as preparation method and application thereof

A technology of plastic composite materials and recycled plastics, which is applied in the field of phosphorus-bora chain prepolymer block polyurethane flame-retardant recycled wood-plastic composite materials and its preparation, which can solve the problems of flammability and fire hazards, and improve water resistance Effect

Pending Publication Date: 2021-04-06
静宁县恒达有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, natural plants and most synthetic polymer plastics are flammable, easy to burn when exposed to an open flame, and there is a fire hazard during use

Method used

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  • Phosphorus-boron heterochain prepolymer block polyurethane flame-retardant regenerated wood-plastic composite material as well as preparation method and application thereof
  • Phosphorus-boron heterochain prepolymer block polyurethane flame-retardant regenerated wood-plastic composite material as well as preparation method and application thereof
  • Phosphorus-boron heterochain prepolymer block polyurethane flame-retardant regenerated wood-plastic composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0046] 1. The preparation of phosphorus bora chain prepolymer block polyurethane waterborne polymer flame retardant comprises the following steps:

[0047] (1) In a four-neck flask with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control device, add 50ml xylene, 45.5gPDCP-DGB, dilauric acid with a ratio of 1:0.01 to TDI Dibutyltin.

[0048] (2) Turn on stirring and blow nitrogen, and heat the reaction system in step (1) to 60±1°C in a water bath. After the heat preservation system is uniform, add 10.3g TDI and 4.0gDMPA dropwise within 30min, keep the system temperature at 75±1°C, and keep warm for 2h , separation and recovery of the upper xylene.

[0049] (3) Cool down the reaction system after separation and removal of xylene to 45±1°C, then add monoethanolamine and 50ml of water, continue stirring for 1 hour, adjust the pH=9.0, and then adjust the product viscosity to 1200Cp (25°C) with water , to obtain the phosphorus bora...

no. 2 example

[0056] 1. The preparation of phosphorus bora chain prepolymer block polyurethane waterborne polymer flame retardant comprises the following steps:

[0057] (1) In a four-neck flask with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control device, add 50ml xylene, 46.1gPDCP-DGB, dilauric acid with a ratio of 1:0.03 to TDI Dibutyltin.

[0058] (2) Turn on stirring and nitrogen gas, and heat the reaction system in step (1) to 65±1°C in a water bath. After the heat preservation system is uniform, add 9.7g of TDI and 4.1g of DMPA dropwise within 30 minutes, keep the system temperature at 75±1°C, and keep warm for 1.5 h, separating and recovering the upper layer xylene.

[0059] (3) Cool the reaction system after separation and removal of xylene to 45±1°C, then add monoethanolamine and 50ml of water, continue stirring for 1 hour, adjust pH=8.0, and then adjust the product viscosity to 2200Cp (25°C) with water , to obtain the phosp...

no. 3 example

[0066] 1. The preparation of phosphorus bora chain prepolymer block polyurethane waterborne polymer flame retardant comprises the following steps:

[0067] (1) In a four-neck flask with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control device, add 50ml xylene, 45.8gPDCP-DGB, dilauric acid with a molar ratio of 1:0.02 to TDI Dibutyltin.

[0068] (2) Turn on stirring and blow nitrogen, and heat the reaction system in step (1) to 60±1°C in a water bath. After the heat preservation system is uniform, add 10.0g TDI and 4.0gDMPA dropwise within 30min, keep the system temperature at 70±1°C, and keep warm for 2.5 h, separating and recovering the upper layer xylene.

[0069] (3) Cool down the reaction system after separation and removal of xylene to 50±1°C, then add monoethanolamine and 50ml of water, continue stirring for 1 hour, adjust the pH=7.5, and then adjust the product viscosity to 2000Cp (25°C) with water , to obtain the ...

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Abstract

The invention relates to a phosphorus-boron heterochain prepolymer block polyurethane flame-retardant regenerated wood-plastic composite material as well as a preparation method and application thereof, and the regenerated wood-plastic composite material comprises the following components in percentage by mass: 50.0-55.0% of regenerated wood master batch, 30.0-35.0% of regenerated plastic, 5.0-10.0% of filler and 5.0-10.0% of plasticizer, wherein the regenerated wood master batch is prepared from the following components in percentage by weight: 45.0 to 52.0 percent of regenerated wood powder, 3.0 to 5.0 percent of coupling agent and 45.0 to 50.0 percent of phosphorus-boron heterochain prepolymer block polyurethane water-based polymer flame retardant. The wood-plastic composite material obtained by the invention has the synergistic functions of low toxicity, environmental protection, low smoke, zero halogen, long-acting flame retardance, water resistance and fire resistance, and the test results show that the average afterflame time of the wood-plastic composite material is less than or equal to 1s, the average ignition time is less than or equal to 25s, the average carbonization length is less than or equal to 20mm, THR is less than or equal to 38MJ / m<2> and LOI is more than or equal to 30%.

Description

technical field [0001] The invention relates to the technical field of preparation of regenerated wood composite materials, in particular to a flame-retardant regenerated wood-plastic composite material of phosphorus-bora chain prepolymer block polyurethane and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The recycling of herbaceous plants such as crop straws and woody natural plants such as tree pruning and discarded branches, and the recycling of waste products such as agricultural mulch and plastic products can not only protect the environment but also avoid resource waste. It is not only the implementation of rural revitalizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L97/02C08L75/04C08K5/544C08K3/26C08K5/12C08G18/65C08G18/64C08G18/34
CPCC08L101/00C08G18/6541C08G18/6461C08G18/348C08K2003/265C08L2201/02C08L2201/22C08L2205/03C08L97/02C08L75/04C08K5/544C08K3/26C08K5/12
Inventor 李婷崔锦峰杜少辉闫银鹏郭润兰郭军红张建茂李虎林周应萍杨保平田力慕波
Owner 静宁县恒达有限责任公司
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