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Water-soluble nano composite polyester-polyurethane coating material, and its preparing method

A polyester-polyurethane and nano-composite technology is applied in polyurea/polyurethane coatings, coatings, devices for coating liquids on surfaces, etc. The performance of coating materials and resin coating materials is reduced to achieve the effects of high hardness, good wear resistance and good construction performance.

Inactive Publication Date: 2006-10-25
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 waterborne nanocomposite polyester polyurethane 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

[0031] In a four-necked flask equipped with a thermometer, a condenser, and a stirrer, add 10 grams of nano-zirconia, 0.2 mol of polyether triol (100 grams) with a molecular weight of 1000, and stir and mix at 1000 rpm for 20 minutes. Synthesize for 20 minutes, during the reaction, control the ultrasonic frequency at 1500kHz, and the reaction temperature at 80°C, add 0.3mol succinic acid (35.4 grams), 0.4mol hexahydrophthalic anhydride (67.2 grams), 0.3mol azelaic acid (56.4 grams ), 0.8mol cyclohexanedimethanol (115.2 grams), 0.4mol9,10-dihydroxy octadecanoic acid (29.2 grams), add 0.3 grams of dibutyltin dilaurate, heat up to 150-170 ° C for 6 hours, continue Raise the temperature to 190-210°C and react for 3 hours to obtain a nanocomposite polyester resin.

[0032]Slowly cool the nanocomposite polyester resin to 70°C, pour it into a dispersing kettle, add ammonia water to neutralize the acid in the resin to make the neutralization degree 120%, add measured deionized water t...

Embodiment 2

[0034] In the four-necked flask that thermometer, condenser, stirrer are housed, add the polyether diol (40 gram) of 20 gram nano zinc oxides, 0.5mol ethylene glycol (31 gram), 0.2mol molecular weight 200, at 1500rpm Stir and mix at a rotating speed for 30 minutes, and use sonochemical synthesis for 50 minutes. During the reaction, control the ultrasonic frequency at 1000kHz, and the reaction temperature at 20°C. Add 1.0mol phthalic acid (150g), 0.5mol 2-ethyl-2-propyl -1,3-propanediol (73 grams), 0.3mol dimethylolpropionic acid (30.6 grams), add 0.2 grams of stannous octoate, heat up to 100-120 ° C for 3 hours, heat up to 140-160 ° C for reaction 3 After 1 hour, continue to raise the temperature to 180-200° C. for 2 hours, then raise the temperature to 220-240° C. for 1 hour to obtain a nanocomposite polyester resin.

[0035] Slowly cool the nanocomposite polyester resin to 90°C, pour it into a dispersion kettle, add N-methylethanolamine to neutralize the acid in the resin, a...

Embodiment 3

[0037] In a four-necked flask equipped with a thermometer, a condenser, and a stirrer, add 75 grams of nano-silica, 0.2 mol of polyethylene glycol (160 grams) with a molecular weight of 800, and stir and mix at 1000 rpm for 20 minutes. Synthesize for 40 minutes, during the reaction, control the ultrasonic frequency to 2000kHz, and the reaction temperature to 100°C, add 0.8mol of isophthalic anhydride (118.4 grams), 0.2mol of pentadecanedioic acid (48 grams), 0.8mol of 1,5-hexanedi Alcohol (94.4 grams), 0.4mol dimethylol butyric acid (59.2 grams), add 0.4 grams of dibutyltin dilaurate, heat up to 140-160 ° C for 5 hours, continue to heat up to 190-210 ° C for 4 hours, A nanocomposite polyester resin is obtained.

[0038] Slowly cool the nanocomposite polyester resin to 80°C, pour it into a dispersion kettle, add N-ethylmorpholine to neutralize the acid in the resin, and make the neutralization degree 80%, add measured deionized water, and make the resin The solid content is 40...

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PUM

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Abstract

The invention relates to a watercraft nanometer compounding polyester polyurethane coating material and the manufacture method that taking coupling and solidifying of the water craft nanometer compounding polyester resin with watercraft sealed polyisocyanate to gain the invention. It has stable performance, good transmittance, and high rigidity. It could be used for wood 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 nanocomposite polyester polyurethane 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): C09D175/06B05D7/02B05D7/06B05D7/14
Inventor 游波武利民廖慧敏
Owner FUDAN UNIV
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