Aqueous nanometer composite polyester amino resin coating material and its preparation method

A technology of water-based amino resin and polyester amino resin, applied in the direction of polyester coating, polyurea/polyurethane coating, coating, etc., can solve the problem of inability to prepare water-based nano-composite resin coating materials and inability to prepare stable nano-composite resin coatings Material, resin coating material performance degradation and other problems, to achieve the effect of high hardness, good wear resistance, and good construction performance

Inactive Publication Date: 2006-12-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing studies have shown that nano-polymer composite coating materials are of positive significance in improving the traditional properties of coatings (such as aging resistance, scratch resistance, abrasion resistance, UV resistance), but the direct application of nanoparticles When blending or in-situ polymerization is added to the resin, the nanoparticles are prone to agglomeration and precipitation, the viscosity of the resin increases, and it is impossible to prepare a stable nanocomposite resin coating material, let alone a waterborne nanocomposite resin coating material
If surface-modified nanoparticles are added to the resin, due to the presence of external additives, the performance of the resin coating material will be reduced
Preparation of water-based nanocomposite polyester amino resin coating materials by in-situ polymerization of nanoparticles has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a four-necked flask equipped with a thermometer, a condenser, and a stirrer, add 30 grams of nano-silica, 1.0 mol of 1,4-butanediol (90 grams), stir and mix at 1000 rpm for 10 minutes, and use sonochemical synthesis For 40 minutes, during the reaction, the ultrasonic frequency was controlled at 1200kHz, the reaction temperature was 50°C, 1.0mol adipic acid (114 grams), 0.8mol cyclohexanedimethanol (115.2 grams), 0.2mol dimethylolpropionic acid (20.4 grams ), add 0.15 grams of dibutyltin dilaurate, heat up to 110-120°C for 2 hours, continue to heat up to 160-180°C, react for 4 hours, then heat up to 200-220°C, react for 2 hours to obtain nanocomposite polymer ester resin. Slowly cool the nanocomposite polyester resin to 80°C, pour it into a dispersion tank, add N,N-dimethylethanolamine to neutralize the acid in the resin, and make the neutralization degree 85%, add measured deionized water, The solid content of the resin is 50 wt%, and the high-hardness water-based n...

Embodiment 2

[0031]In a four-necked flask equipped with a thermometer, a condenser, and a stirrer, add 100 grams of nano-alumina and 0.5 mol of polyethylene glycol (200 grams) with an average molecular weight of 400, and stir and mix for 20 minutes at a speed of 1000 rpm. Synthesize for 60 minutes, during the reaction, control the ultrasonic frequency to 500kHz, and the reaction temperature to 80°C, add 0.6mol of undecanedibasic acid (112.8g), 0.4mol of 1,4-cyclohexanedicarboxylic acid (68.8g), 0.5mol of dicarboxylic acid Diethylene glycol (53 grams), 0.2mol 2-ethyl-2-propyl-1,3-propanediol (29.2 grams), 0.1mol trimethylolpropane (13.4 grams), 0.3mol dimethylolbutyl acid (44.4 g), add 0.10 g of titanium glycolate, heat up to 110-120 °C for 3 hours, heat up to 130-150 °C for 3 hours, continue to heat up to 170-190 °C for 3 hours, to obtain nanocomposite polymer ester resin. Slowly cool the nanocomposite polyester resin to 80°C, pour it into a dispersion kettle, add 3-amino-1-propanol to ne...

Embodiment 3

[0033] In a four-necked flask equipped with a thermometer, a condenser, and a stirrer, add 60 grams of nano-titanium oxide, 1.0 mol of propylene glycol (76 grams), 0.2 mol of 1,6-hexanediol (23 grams), and 0.1 mol of an average molecular weight of 500 The polyether trihydric alcohol (50 grams) is stirred and mixed at 1000 rpm for 10 minutes, and is synthesized by sonochemistry for 30 minutes. During the reaction, the ultrasonic frequency is controlled at 1000 kHz, the reaction temperature is 120 ° C, and 0.5 mol of adipic acid (57.0 grams) is added. , 0.3mol terephthalic acid (37.8 grams), 0.2mol isophthalic anhydride (29.6 grams), 0.1mol2,4-dihydroxybenzoic acid (13.8 grams), add 3 grams of germanium acetate, and heat up to 110-120 ℃ for 1 hour, the temperature is raised to 130-150 ℃ for 3 hours, the temperature is further raised to 160-180 ℃ for 3 hours, and the temperature is raised to 220-240 ℃ for 2 hours to obtain a nanocomposite polyester resin. Slowly cool the nanocomp...

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PUM

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Abstract

The invention relates the aquosity nanometer polyester- amido resin coating material and preparing method. The invention cross-linking cures the aquosity nanometer polyester resin and amido resin to get the aquosity nanometer polyester- amido resin. The product has the advantages of good stabilization, diaphaneity, diaphaneity, brightness and abradability. The brightness of the coating is above 90%, the hardness is improved by 30-150%, and the abradability is improved by 20-70%. The coating can be used in woodware coating material, metal coating material and plastic coating material.

Description

technical field [0001] The invention relates to the field of chemical industry, and relates to a water-based nano-composite polyester amino resin coating material and a preparation method thereof. Background technique [0002] Whether it is metal coating materials, plastic coating materials, or wood coating materials, most of the coating materials currently used are solvent-based coating materials, which have high organic volatile compounds (VOC), and some coating materials contain more than 70% organic solvents. Seriously pollute the environment and endanger people's health. For this reason, developed countries have legislated to limit their VOC emissions, and my country has gradually promulgated the limit standards for harmful substances in decoration materials, which have restricted the VOC in traditional solvent-based coatings. The promulgation of these regulations is greatly conducive to the research and development of water-based coating materials, but so far, whether...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/02C09D175/00
Inventor 游波武利民廖慧敏
Owner FUDAN UNIV
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