Inorganic composite phenol modified urea formaldehyde resin foam and preparation method thereof

A technology of urea-formaldehyde resin foam and urea-formaldehyde resin, which is applied in the field of inorganic composite phenol-modified urea-formaldehyde resin foam and its preparation, can solve the problems of life-threatening, large deformation coefficient, aging resistance, etc., and achieve low thermal conductivity and low product cost , the effect of excellent flame retardant properties

Active Publication Date: 2013-10-09
JIANGSU MEILONG AVIATION COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are two types of thermal insulation materials for buildings: organic thermal insulation materials, such as polystyrene board (PS), polyurethane (SPU), phenolic (PF), etc., have the advantages of light weight and good thermal insulation effect, but have disadvantages It is not resistant to aging, has a large deformation coefficient, and is easy to burn, etc. A

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Preparation of phenol-modified urea-formaldehyde resin

[0054] Mix 65 parts of formaldehyde solution with a concentration of 37% by mass and 10 parts of phenol, adjust the pH value of the system to 8 with 2mol / L sodium hydroxide aqueous solution, raise the temperature to 75°C and keep it warm for 1.5 hours, then add the first batch of 11 parts of urea (55%), heat up to 85°C and heat for 30 minutes; then cool down to 70°C and add the second batch of urea 7 parts (35%), then heat up to 98°C and heat for 30 minutes, then add mass percent Adjust the pH value to 6 with 15% formic acid aqueous solution, and reach the end point when the system becomes white and turbid; then quickly adjust the pH value to 8 with 2mol / L sodium hydroxide aqueous solution, and then add the third batch of urea 2 parts (10%), quickly lower the temperature to 65°C, and keep warm for 50 minutes to obtain the phenol-modified urea-formaldehyde (PUF) resin provided by the invention.

[0055] The vis...

Embodiment 2

[0063] 1. Preparation of phenol-modified urea-formaldehyde resin: the method is the same as in Example 1.

[0064] 2. Preparation of foam

[0065] Weigh 26 parts of hollow glass microspheres and 0.2 parts of γ-glycidoxypropyltrimethoxysilane and mix them in a high-speed kneader at a speed of 1500r / min for 50min, and mix evenly; the material temperature is 40°C;

[0066] Add 60 parts of phenol-modified urea-formaldehyde resin prepared by method 1, and stir at 30°C for 90 minutes to make a composite of phenol-modified urea-formaldehyde (PUF) resin and inorganic filler;

[0067] Weigh 0.6 parts of sodium dodecylbenzenesulfonate, 2.2 parts of sulfuric acid, 1.8 parts of phosphoric acid, and 51 parts of water to prepare a foaming liquid. Use a high-speed mixer to stir 55.6 parts of the foaming liquid rapidly, and at the same time blow in 0.4MPa compressed air through the air compressor, stir for 50s, add the prepared compound of phenol-modified urea-formaldehyde resin and inorgani...

Embodiment 3

[0070] 1. Preparation of phenol-modified urea-formaldehyde resin: the method is the same as in Example 1.

[0071] 2. Preparation of foam

[0072] Weigh 30 parts of aluminum hydroxide and 0.19 parts of γ-(methacryloyloxy)propyltrimethoxysilane and mix them in a high-speed kneader at a speed of 2000r / min for 50min, and mix well; the material temperature is 40°C;

[0073] Add 60 parts of phenol-modified urea-formaldehyde resin prepared by method 1 and stir at 50°C for 45 minutes to make a composite of phenol-modified urea-formaldehyde (PUF) resin and inorganic filler;

[0074] Weigh 0.5 parts of dioctyl sodium sulfosuccinate, 3.0 parts of phthalic acid, and 86.5 parts of water to prepare a foaming liquid. Use a high-speed mixer to stir 90 parts of the foaming liquid rapidly, and at the same time blow in 0.4MPa compressed air through the air compressor, stir for 60s, add the prepared phenol-modified urea-formaldehyde resin and inorganic filler compound, continue stirring for 20s...

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Abstract

The invention provides inorganic composite phenol modified urea formaldehyde resin foam and a preparation method thereof. The preparation method of the inorganic composite phenol modified urea formaldehyde resin foam comprises the following steps of: foaming and forming inorganic filler and phenol modified urea formaldehyde resin to obtain the inorganic composite phenol modified urea formaldehyde resin foam, wherein the weight-part ratio of the inorganic filler to the phenol modified urea formaldehyde resin is (0.1-0.5):1. According to the inorganic composite phenol modified urea formaldehyde resin foam material provided by the invention, the flame retardance is remarkably improved to the A2 level while guaranteeing the light weight and low heat conduction of the urea formaldehyde foam, and the material can be applied to external wall insulation and architectural decoration.

Description

technical field [0001] The invention relates to an inorganic composite phenol-modified urea-formaldehyde resin foam and a preparation method thereof. Background technique [0002] Energy consumption is increasing day by day, and building energy conservation has been paid more and more attention to. It is an effective measure to save energy to do insulation work for the building envelope. Regardless of public buildings or civil buildings, glass, doors, windows and exterior wall renovations are the key to energy conservation. For civil buildings, thermal insulation material cladding is mainly used to achieve energy saving. However, many serious fire accidents in high-rise buildings in recent years have warned us that the flame retardant performance of building insulation materials cannot be ignored. [0003] There are two types of thermal insulation materials for buildings: organic thermal insulation materials, such as polystyrene board (PS), polyurethane (SPU), phenolic (PF...

Claims

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Application Information

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IPC IPC(8): C08J9/30C08L61/34C08K9/06C08K3/00C08K7/28C08K3/22C08K3/34C08K3/26C08K5/098C08G14/08
Inventor 赵彤王娟李昊翁启赛
Owner JIANGSU MEILONG AVIATION COMPONENTS
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