Heat-resistant composite light stabilizer for plastics and preparation method thereof

A technology of hindered amine light stabilizer and composite light, applied in the field of plastic additives, can solve the problems of lack of oxidation resistance, reduced service life, easy to be oxidized and decomposed, etc., achieve good industrialization prospects, improve heat resistance, compatibility good effect

Inactive Publication Date: 2020-03-17
WEIFANG UNIVERSITY
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  • Application Information

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Problems solved by technology

Although the light stabilizer formed by the ternary compound system can be better compatible with plastic products and avoid the blind spot of the light stabilizer caused by local unevenness, the three light stabilizers are all long-chain piperidinyl stearic acid Ester structure, high cost, lack of antioxidant additives, easy to be oxidized and decomposed, reducing service life

Method used

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  • Heat-resistant composite light stabilizer for plastics and preparation method thereof
  • Heat-resistant composite light stabilizer for plastics and preparation method thereof
  • Heat-resistant composite light stabilizer for plastics and preparation method thereof

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preparation example Construction

[0036] The preparation method of the heat-resistant composite light stabilizer for plastics of above-mentioned embodiment 1-6, comprises the following steps:

[0037] (1) Modified nano-TiO 2Particle preparation: Add the organic solvent into the reaction kettle, add butyl hydroxyanisole and auxiliary antioxidant, and stir evenly at room temperature to obtain an antioxidant solution; add nano-titanium dioxide preheated to 80-100°C into the antioxidant solution, Then add calcium stearate, stir at 800-1000r / min at a high speed for 40-60min to obtain a modified mixture, filter, dry, and ultrafinely pulverize to obtain modified nano-TiO with a particle size range of 10-15μm 2 particle. Among them, the superfine pulverization uses a fluidized bed airflow pulverizer, and its air consumption is 6m 3 / min, the working pressure is 0.7-0.9MPa.

[0038] (2) Mixing: ultrasonically disperse the hindered amine light stabilizer composition for 6 minutes and add it into the reaction kettle. ...

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Abstract

The invention relates to the technical field of plastic auxiliary agents, and in particular relates to a heat-resistant composite light stabilizer used for plastics and a preparation method of the composite light stabilizer. The composite light stabilizer comprises the following raw materials in parts by weight: 100-160 parts of modified nano TiO2 particles, 10-25 parts of a hindered amine light stabilizer composition, 0.1-0.5 part of distearyl pentaerythritol diphosphite, and 0.06-0.3 part of dioctyl phthalate; and the preparation method comprises the steps of preparation of the modified nanoTiO2 particles, material mixing and post-treatment. The method provided by the invention uses the nano TiO2 particles modified by an antioxidant solution as a main component and is combined with thebinary light stabilizer composition, so that the composite light stabilizer provided by the invention has good compatibility, significantly improves heat resistance, ultraviolet radiation resistance and light aging resistance of plastic film products, and greatly reduces costs.

Description

technical field [0001] The invention relates to the field of plastic additives, in particular to a heat-resistant composite light stabilizer for plastics and a preparation method thereof, in particular to a heat-resistant composite light stabilizer used in the processing of plastic film products and a preparation method thereof. The light stabilizer has excellent anti-ultraviolet and anti-light aging properties. Background technique [0002] Due to its own structure, when exposed to sunlight or strong fluorescence, the appearance and physical and mechanical properties of polymer materials will decline, such as photoaging such as loss of luster, cracks, tensile strength, and impact strength. Especially plastic film products, long-term exposure to high heat or ultraviolet light, whether there is oxygen or not, will accelerate photoaging, reduce service life, and limit the scope of application. [0003] At present, the light stabilizers added to polyethylene plastic films main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/06C08K9/04C08K3/22C08K5/524C08K5/12C08K5/3435C08K5/13C08K5/098C08L23/06C08J5/18
CPCC08J5/18C08J2323/06C08K3/22C08K5/098C08K5/12C08K5/13C08K5/3435C08K5/524C08K9/04C08K13/06C08K2003/2241C08K2201/011C08K2201/014
Inventor 郑秋闿范晶晶
Owner WEIFANG UNIVERSITY
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