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Modified cardanol-based polyether polyol and high-fire-resistant hard polyurethane foam prepared by modified cardanol-based polyether polyol and preparation method thereof

A technology of cardanol-based polyether and polyether polyol, which is applied in the field of high flame-retardant rigid polyurethane foam and its preparation, can solve the problems that have not been reported, affect the overall performance of the foam, and are easy to separate out, so as to achieve good heat preservation effect, Improve the intrinsic flame retardant properties and good mechanical stability

Inactive Publication Date: 2016-02-03
滕州市科米特新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "GB50016-2014 Fire Protection Code for Building Design" officially implemented on May 1, 2015 has made detailed regulations on the different fire protection levels of building exterior wall insulation materials (see Table 1). For common polyurethane insulation materials, it can generally reach B2 level Standards are only applicable to low-rise buildings, but for the B1 or even A-level standards required by medium and high-rise buildings, such polyurethane materials that can achieve real large-scale applications have not yet been reported
Although the process of directly adding flame retardants to foaming raw materials is simpler and the cost is the lowest, there are defects such as easy precipitation and affecting the overall performance of the foam. It can reach about LOI25%. Structural flame retardant (flame retardant polyether) has no such concerns. It exists in the structure of polyurethane and will not precipitate; it participates in the foaming reaction of polyurethane and generally does not affect the overall performance of the foam; in the formula It can even add up to 100 servings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]Install a reflux condenser on the four-necked bottle, add 302g of cardanol, 72g of paraformaldehyde, and 25g of melamine into the four-necked bottle, stir and mix evenly under nitrogen protection, raise the temperature to 80°C, add 200g of diethanolamine dropwise, and add the time for 1 hour, then react at 90°C for 4 hours, continue to heat up to 110°C, dehydrate under reduced pressure to make the moisture less than 1.0%, continuously feed 80g of ethylene oxide and 162g of propylene oxide for reaction, control the temperature at about 130°C The pressure was maintained at 0.4-0.6MPa. When the pressure dropped to normal pressure, the polymerization reaction was completed. The temperature was kept at 110°C for 2 hours, and the vacuum was pumped for 30 minutes to obtain a modified cardanol Mannich polyether polyol with a hydroxyl value of 470mg / gKOH, 25 °C viscosity is 5500mPa·s. Then weigh 60g of the above polyether polyol, 40g of polyester polyol, 3g of foam stabilizer (AK...

Embodiment 2

[0023] Install a reflux condenser on the four-necked bottle, add 302g of cardanol, 72g of paraformaldehyde, and 66g of tribromoaniline into the four-necked bottle, stir and mix evenly under nitrogen protection, raise the temperature to 80°C, add dropwise 200g of diethanolamine, dropwise Adding time is 1h, then react at 90°C for 4h, continue to heat up to 110°C, dehydrate under reduced pressure to make the moisture less than 1.0%, continuously feed 80g of ethylene oxide and 162g of propylene oxide for reaction, and control the temperature at about 130°C. The pressure in the kettle is kept at 0.4-0.6MPa. When the pressure drops to normal pressure, the polymerization reaction is completed, and the temperature is kept at 110°C for 2 hours, and the vacuum is pumped for 30 minutes to obtain a modified cardanol Mannich polyether polyol with a hydroxyl value of 402mg / gKOH , The viscosity at 25°C is 6500mPa·s. Then weigh 60g of the above polyether polyol, 40g of polyester polyol, 3g of...

Embodiment 3

[0025] Install a reflux condenser on the four-necked bottle, add 302g of cardanol, 72g of paraformaldehyde, and 25g of melamine into the four-necked bottle, stir and mix evenly under nitrogen protection, raise the temperature to 80°C, add dropwise 230g of diethylenetriamine, dropwise Adding time is 2h, then react at 90°C for 4h, continue to heat up to 110°C, dehydrate under reduced pressure to make the moisture less than 1.0%, continuously feed 80g of ethylene oxide and 162g of propylene oxide for reaction, and control the temperature at about 130°C, The pressure in the kettle is kept at 0.4-0.6MPa. When the pressure drops to normal pressure, the polymerization reaction is completed, and the temperature is kept at 110°C for 2 hours, and the vacuum is pumped for 30 minutes to obtain a modified cardanol Mannich polyether polyol with a hydroxyl value of 509mg / gKOH , The viscosity at 25°C is 5700mPa·s. Then weigh 60g of the above polyether polyol, 40g of polyester polyol, 3g of fo...

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Abstract

The invention discloses a modified cardanol-based polyether polyol and high-fire-resistant hard polyurethane foam prepared by the modified cardanol-based polyether polyol and a preparation method thereof. The polyether polyol takes cardanol, paraformaldehyde, diethanolamine, diethylenetriamine, tribromoaniline, melamine, oxirane and epoxypropane as raw materials, the raw materials are reacted for synthesis of cardanol Mannich polyether polyol, a hydroxyl value is 200-700mg / gKOH, the moisture is less than or equal to 1.0%, the viscosity is 1000-12000 mPa.s (at 25 DEG C), and the cardanol-based polyether polyol can be taken as a polyhydric alcohol component which can be used in the hard polyurethane foam. The product has advantage of adjustable functionality, contains a flame-retardant group, and has good compatibility with a cyclopentane foaming agent.

Description

technical field [0001] The invention relates to a modified cardanol-based polyether polyol, a highly flame-retardant rigid polyurethane foam prepared by using the modified cardanol-based polyether polyol and a preparation method thereof. Background technique [0002] In recent years, major fires caused by building exterior wall insulation materials, especially rigid polyurethane foam (RPUF), have occurred from time to time, causing heavy casualties and property losses, and having a bad social impact, which seriously restricts polyurethane insulation. The development of materials, flame retardant research is imminent. In the "GB8624-2012 Classification of Combustion Performance of Building Materials and Products" implemented on October 1, 2013, it is clearly required that for wall insulation foam plastics, B1 grade materials must meet the limit oxygen index LOI ≥ 30%, B2 grade materials Must meet LOI ≥ 26%. The "GB50016-2014 Fire Protection Code for Building Design" officia...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/50
Inventor 郭亚莉钟东南孙志武陈志强
Owner 滕州市科米特新材料有限责任公司
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