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Nano-modification waterborne polyurethane pressure-sensitive adhesive for protective film and preparation method of nano-modification waterborne polyurethane pressure-sensitive adhesive

A water-based polyurethane, nano-modified technology, applied in fibrous fillers, adhesive additives, dyed organosilicon compound treatment, etc., to achieve the effect of excellent temperature resistance

Inactive Publication Date: 2013-04-10
GUANGDONG TAMAY NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regarding nano-modified TiO 2 The patent of polyurethane used for protective film has not been reported yet

Method used

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  • Nano-modification waterborne polyurethane pressure-sensitive adhesive for protective film and preparation method of nano-modification waterborne polyurethane pressure-sensitive adhesive
  • Nano-modification waterborne polyurethane pressure-sensitive adhesive for protective film and preparation method of nano-modification waterborne polyurethane pressure-sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of nano-modified TiO 2 :

[0043] 50g nano TiO 2 (particle size of 100nm) was dispersed in 2.4kg of toluene, ultrasonically dispersed for 10 minutes, added 35g ethyltrimethoxysilane, 2.5g triethylamine, reflux reaction at 120°C for 5 hours, filtered after the reaction, and used anhydrous Washed with ethanol and dried in a vacuum oven for 24 hours to obtain nano-modified TiO 2 .

[0044] 2. Preparation of nano-modified water-based pressure-sensitive adhesive:

[0045] 100g of polyoxypropylene diol (molecular weight 1000), 23.3g of isophorone diisocyanate, 0.2g of triethylamine, 0.5g of dimethylol propionic acid and 0.6g of diethylene glycol were stirred and mixed, under nitrogen protection Raise the temperature to 90°C and react for 2 hours, then cool down to 40°C after fully reacting and add nano-modified TiO 2 . 2g, 0.8g of sodium polyacrylate and 350g of distilled water, fully stir the mixed solution until uniform and keep it warm for 1 hour, afte...

Embodiment 2

[0049] 1. Preparation of nano-modified TiO 2 :

[0050] The method is the same as in Example 1.

[0051] 2. Preparation of nano-modified water-based pressure-sensitive adhesive:

[0052] Stir and mix 100 g of polyethylene glycol (molecular weight 1000), 23.3 g of isophorone diisocyanate, 0.15 g of triethylamine, 0.4 g of dimethylol propionic acid and 0.5 g of diethylene glycol, and heat up under nitrogen protection React at 90°C for 2 hours, cool down to 40°C after fully reacting and add nano-modified TiO 2 3g, 0.6g of sodium polyacrylate and 350g of distilled water, fully stir the mixed solution until uniform and keep it warm for 1 hour, after cooling, the pressure-sensitive adhesive solution is obtained.

Embodiment 3

[0056] 1. Preparation of nano-modified TiO 2 :

[0057] The method is the same as in Example 1.

[0058] 2. Preparation of nano-modified water-based pressure-sensitive adhesive:

[0059] 100g of polyoxypropylene diol (molecular weight 1000), 17.6g of hexamethylene diisocyanate, 0.2g of triethylamine, 0.4g of dimethylol propionic acid and 0.5g of diethylene glycol were stirred and mixed, under nitrogen protection Raise the temperature to 90°C and react for 2 hours, then cool down to 40°C after fully reacting and add nano-modified TiO 2 3g, 0.7g of sodium polyacrylate and 350g of distilled water, stir the mixture until uniform and keep it warm for 1 hour, after cooling, the pressure-sensitive adhesive solution is obtained.

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Abstract

The invention provides a nano-modification waterborne polyurethane pressure-sensitive adhesive for a protective film. The waterborne pressure-sensitive adhesive comprises polyurethane and modified nano titanium dioxide particles, wherein the nano-modification TiO2 particles are combined with polyurethane by a chemical reaction; and the weight percentage is 1-10%. The invention further provides a preparation method of the nano-modification waterborne polyurethane pressure-sensitive adhesive. The nano-modification waterborne polyurethane pressure-sensitive adhesive has a good adhesion force with polyethylene and polypropylene films and other films; nano TiO2 of the adhesive is dispersed in a polyurethane emulsion well; the nano particles do not have any adverse effects on the appearance of the prepared protective film; and the temperature resistance, the moisture resistance and the weather resistance of the nano-modification waterborne polyurethane pressure-sensitive adhesive can be improved remarkably.

Description

technical field [0001] The invention relates to a water-based polyurethane pressure-sensitive adhesive and a preparation method thereof, more specifically, the invention relates to a nano-modified water-based polyurethane pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Protective film is a material used to protect the surface of commodities, so that various metal products, aluminum materials, stainless steel plates, glass, plastics and other commodities are prevented from being polluted and scratched during the process of manufacturing, transportation, storage and use. The protective film generally uses polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) or polyethylene terephthalate (PET) film as the substrate, and then coats the substrate in emulsion or The pressure-sensitive adhesive in the solution state is heated to remove the solvent, and the protective film is obtained by winding. Compared with solvent-based pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C08G18/75C08G18/66C08G18/48C09C1/36C09C3/12
Inventor 李卓民许钟武张刚
Owner GUANGDONG TAMAY NEW MATERIALS
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