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A plastic additive with anti-ultraviolet aging and moisturizing properties, its preparation method and application

A technology of plastic additives and moisturizing properties, applied in the fields of plastic additives and anti-ultraviolet aging, can solve the problems of easy migration and uneven dispersion of inorganic nanoparticles, and achieve the effects of simple process, excellent anti-ultraviolet aging, and simple preparation process.

Active Publication Date: 2020-08-18
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of easy migration, volatilization and uneven dispersion of inorganic nanoparticles in current organic ultraviolet absorbers, and provide a preparation method and application of an efficient, multifunctional and environmentally friendly plastic additive

Method used

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  • A plastic additive with anti-ultraviolet aging and moisturizing properties, its preparation method and application
  • A plastic additive with anti-ultraviolet aging and moisturizing properties, its preparation method and application
  • A plastic additive with anti-ultraviolet aging and moisturizing properties, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1g of white carbon black (SiO 2 ) and 1g 2-hydroxyl-4-octyloxybenzophenone (UV-531) were mixed in a 100ml three-necked flask, and the organotin catalyst (dibutyltin dilaurate) diluted with 1ml ethanol was added dropwise. The amount of catalyst used is 7.5% of the mass of white carbon black, stirred and reacted at a speed of 400rpm under the condition of 160°C for 9h, the prepared reaction product is put into a vacuum oven, and baked to constant weight under the condition of 60°C to obtain Plastic additive SiO 2 -531.

[0038] The infrared spectrogram (FTIR) of the plastic additive prepared in this embodiment after solvent extraction is as follows: figure 1 As shown, comparing unmodified silica and plastic additives (SiO 2 -531) infrared spectrum, SiO 2 The spectrum of -531 is at 1540cm -1 and 1515cm -1 The skeleton vibration peak of the benzene ring appeared at 1645cm -1 and 1740cm -1 The stretching vibration peak of the carbonyl group appears. The above result...

Embodiment 2

[0046] 1g of white carbon black (SiO 2 ) and 1g 2-hydroxyl-4-octyloxybenzophenone (UV-531) were mixed in a 100ml three-necked flask, and the organotin catalyst (dibutyltin dilaurate) diluted with 1ml ethanol was added dropwise. The amount of catalyst used is 7.5% of the mass of white carbon black, stirred and reacted at a speed of 400rpm under the condition of 140°C for 9h, the prepared reaction product is put into a vacuum oven, and baked to constant weight under the condition of 60°C to obtain Plastic additive SiO 2 -531.

[0047] Infrared spectrum showed that the product prepared in this example was the target product. Thermogravimetric analysis showed that the SiO prepared in this example 2 The mass fraction of ultraviolet absorber in -531 is 0.35%. Its dispersibility, moisture retention and anti-ultraviolet aging properties and compound system (PBAT / SiO 2 / 531), there is no significant improvement.

Embodiment 3

[0049] 1g of white carbon black (SiO 2 ) and 1g 2-hydroxyl-4-octyloxybenzophenone (UV-531) were mixed in a 100ml three-necked flask, and the organotin catalyst (dibutyltin dilaurate) diluted with 1ml ethanol was added dropwise. The amount of catalyst used is 7.5% of the mass of white carbon black, stirred and reacted at a speed of 400rpm under the condition of 170°C for 9h, the prepared reaction product is put into a vacuum oven, and baked to constant weight under the condition of 60°C to obtain Plastic additive SiO 2 -531.

[0050] Infrared spectrum showed that the product prepared in this example was the target product. Thermogravimetric analysis showed that the SiO prepared in this example 2 The mass fraction of ultraviolet absorber in -531 is 3.33%, and its dispersibility, moisture retention and anti-ultraviolet aging performance are compared with the compound system (PBAT / SiO 2 / 531) has been improved. After aging for 48h, the PBAT / SiO prepared from this product 2 T...

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Abstract

The invention discloses a plastic additive with anti-ultraviolet ageing and moisturizing property and a preparation method and application thereof, and belongs to the fields of plastic additives and anti-ultraviolet ageing. A solid phase method is adopted for preparing a novel ultraviolet absorbent and specifically comprises the following steps: mixing an ultraviolet absorbent and inorganic nano particles according to a mass ratio of (0.1-1):1, performing stirring reaction for 7-11 hours at 140-170 DEG C under the catalytic action of an organic tin catalyst, and performing vacuum drying to obtain the plastic additive with anti-ultraviolet ageing and moisturizing property. The plastic additive has an obvious anti-ultraviolet ageing effect on plastics, especially can reduce migration and volatilization of additives in plastic products in a using process, and simultaneously improves the dispersion condition of the inorganic nano particles in plastic substrates; and the preparation methodis simple in operation and is environmentally friendly. The plastic additive is a high-efficiency, multifunctional and environment-friendly plastic additive and has important application prospects inthe plastic industry.

Description

technical field [0001] The invention belongs to the field of plastic additives and anti-ultraviolet aging, and specifically relates to a preparation method and application of a plastic additive with anti-ultraviolet aging and moisturizing properties. Background technique [0002] Slowing down the degradation of polymers is usually by adding additives to polymers, such as antioxidants, UV absorbers, UV screeners, etc. Traditional UV absorbers have two main disadvantages: (1) they are prone to degradation or volatilization during polymer processing; (2) due to their low molecular weight, migration occurs during long-term use of polymers, while UV shielding agents , such as carbon black, etc. will seriously affect the color and transparency of the product. [0003] At present, researchers at home and abroad mainly use two methods to overcome these shortcomings, (1) use a variety of additives to achieve the synergistic effect of complementing each other, among which the compoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K9/04C08K3/36C08J5/18
CPCC08J5/18C08J2367/02C08K3/36C08K9/04C08K2201/011C08L2201/08C08L67/02
Inventor 谢东贾志欣唐钰晗贾德民罗远芳陈明周
Owner SOUTH CHINA UNIV OF TECH