Photosensitive polypropylene material and preparation method thereof

A polypropylene material and polypropylene technology, applied in the field of photosensitive polypropylene material and its preparation, can solve the problems such as difficult to improve the effect of stain cleaning, and achieve the effect of promoting easy cleaning effect, low process condition requirements, and few reaction steps

Active Publication Date: 2022-02-25
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the addition of maleic anhydride grafted PP can indeed improve the polarity of PP, but it is still difficult to improve the effect of stain cleaning

Method used

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  • Photosensitive polypropylene material and preparation method thereof
  • Photosensitive polypropylene material and preparation method thereof
  • Photosensitive polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] (1) Preparation of azobenzene functional monomer: add 0.5g triethylamine in 500mL chloroform, then add 50g glycidyl methacrylate (A), add functional azobenzene compound (B), the moles of both The ratio is A:B=0.9. After dissolving and stirring evenly, heat to 50°C and react at a constant temperature for 8 hours, then cool to room temperature, adjust the pH value to neutral with hydrochloric acid, and remove the solvent by rotary evaporation to obtain a crude product, which is reconstituted with ethanol. Crystallization and purification to obtain the final product azobenzene functional monomer. Wherein the molecular formula of the functional azobenzene compound (B) is:

[0076]

[0077] Among them, R 2 for a hydrogen atom.

[0078] (2) Preparation of photosensitive functionalized polypropylene: stir polypropylene, functional monomers, azobenzene functional monomers and peroxides evenly, then add them to a twin-screw extruder for melt extrusion, and use reactive extr...

Embodiment 2

[0083] (1) Preparation of azobenzene functional monomer: add 0.05g triphenylphosphine in 500mL benzene, then add 50g glycidyl methacrylate (A), add functional azobenzene compound (B), both The molar ratio is A:B=1.0, after dissolving and stirring evenly, heat to 80°C, react at constant temperature for 8 hours, then cool to room temperature, use hydrochloric acid to adjust the pH value to neutral, and remove the solvent by rotary evaporation to obtain a crude product, which is carried out with ethanol Purify by recrystallization to obtain the final product azobenzene functional monomer. Wherein the molecular formula of the functional azobenzene compound (B) is:

[0084]

[0085] Among them, R 2 for -CH 3 .

[0086] (2) Preparation of photosensitive functionalized polypropylene: stir polypropylene, functional monomers, azobenzene functional monomers and peroxides evenly, then add them to a twin-screw extruder for melt extrusion, and use reactive extrusion to obtain the pho...

Embodiment 3

[0090] (1) Preparation of azobenzene functional monomer: add 0.25g tetrabutylammonium bromide in 500mL xylene, then add 50g glycidyl methacrylate (A), add functional azobenzene compound (B), The molar ratio of the two is A:B=0.95. After dissolving and stirring evenly, heat to 150° C., react at a constant temperature for 8 hours, then cool to room temperature, use hydrochloric acid to adjust the pH value to neutral, and remove the solvent by rotary evaporation to obtain a crude product. Ethanol is used for recrystallization and purification to obtain the final product azobenzene functional monomer. Wherein the molecular formula of the functional azobenzene compound (B) is:

[0091]

[0092] Among them, R 2 for -OH.

[0093] Preparation of photosensitive functionalized polypropylene: mixing polypropylene, functional monomers, azobenzene functional monomers and peroxides evenly, adding them to a twin-screw extruder for melt extrusion, and using reactive extrusion to obtain t...

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Abstract

The invention discloses a photosensitive polypropylene material and a preparation method thereof. Novel photosensitive functional polypropylene is added into the polypropylene material, azo groups contained in the polypropylene material can generate conformational change under specific illumination, the azo groups are matched with polar groups to well weaken the bonding strength of dirt on the surface of polypropylene, so that polypropylene is easy to clean. In addition, a lubricant and an anti-static agent added into the photosensitive easy-to-clean polypropylene material also have a remarkable effect on dirt and dust adsorbed by static electricity, so that the polypropylene material is easier to clean. The preparation method provided by the invention has the advantages of simple and easily available raw materials, few reaction steps, low process condition requirements, high reaction yield and low cost, and can be used for large-scale industrial production.

Description

technical field [0001] The invention relates to a photosensitive polypropylene material and a preparation method thereof, and belongs to the field of polymer material synthesis and application. Background technique [0002] With the improvement of living standards and the advancement of science and technology, more and more automated and intelligent equipment has entered daily life. Electronic appliances will encounter a variety of stains during use, liquid such as grease, beverages and sauce stains, etc., solid such as dust, mud, etc. Different stains will show different degrees of adhesion on polymer materials, giving It is very difficult to clean, it is not easy to remove, or it will leave marks after removal, and it can still be stained again after removal. For example, for electrical appliances such as dishwashers, the pigment in ketchup can easily penetrate into the polymer material, and the polymer material exposed to such stains for a long time will turn yellow and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08F255/02C08F220/32C08F220/36C08F222/06
CPCC08L23/12C08F255/02C08L51/06C08F220/325C08F220/365C08F222/06Y02P20/52
Inventor 王绍杰刘雪婷陆佳伟陈连清孙天舒姚威宇
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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