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Polyvinyl chloride ultraviolet stabilizer, polyvinyl chloride prepared from same and method for preparing same

A technology of polyvinyl chloride and light stabilizer, applied in the polymer field, can solve the problems of poor extraction resistance, compatibility of volatile PVC substrates, low light stabilization efficiency, etc., and achieves low manufacturing cost and improved light stability. Effect

Active Publication Date: 2009-09-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is a kind of PVC ultraviolet light stabilizer proposed for the deficiencies in the prior art, the PVC and preparation method thereof of ultraviolet light resistance prepared by it, To solve the problems of easy migration, poor extraction resistance, easy volatilization, poor compatibility with PVC substrates, and low light stabilization efficiency of light stabilizers in the prior art

Method used

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  • Polyvinyl chloride ultraviolet stabilizer, polyvinyl chloride prepared from same and method for preparing same
  • Polyvinyl chloride ultraviolet stabilizer, polyvinyl chloride prepared from same and method for preparing same
  • Polyvinyl chloride ultraviolet stabilizer, polyvinyl chloride prepared from same and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of the anti-ultraviolet light stabilizer in Example 1 is to place the pretreated r-LS and PVC resin powder in the vibration milling device according to the ratio at about 30 ° C, and mix and vibrate for 8 hours (rotation speed 800 rpm / points), a new light stabilizer can be prepared.

[0036] The preparation methods of other examples are basically the same as those of Example 1.

[0037] Provide the embodiment and the test result of the light-resistant PVC containing the photostabilizer provided by the invention below

[0038] Example 1:

[0039] 3phr novel ultraviolet light stabilizer I, 1phr dibasic lead phosphite, 2phr tribasic lead sulfate, 0.5phr stearic acid are added in the PVC resin (PVC-SG8 of Yibin Tianyuan chemical factory) of 100phr respectively, in double Mix in a roller mixer at about 170°C for about 8 minutes, and then press at about 180°C to form sheets and plates of required thickness for testing. (1#: PVC sample added with 0.5phr rea...

Embodiment 2

[0043] 1.8phr novel light stabilizer II, 1phr dibasic lead phosphite, 2phr tribasic lead sulfate, 0.5phr stearic acid are added in the PVC resin (PVC-SG8 of Yibin Tianyuan Chemical Factory) of 100phr respectively, in double Knead at about 170°C for about 10 minutes in a roller kneader, and then press at about 180°C to form sheets and plates of required thickness for performance testing after accelerated aging. (1#: PVC sample added with 0.5phr reactive light stabilizer; 2#: PVC sample added with 1.8phr light stabilizer after vibration grinding)

[0044]

Embodiment 3

[0046] 3phr new light stabilizer III, 1phr dibasic lead phosphite, 2phr tribasic lead sulfate, 0.5phr stearic acid are added in 100phr PVC resin (PVC-SG8, Yibin Tianyuan Chemical Factory) respectively. Knead in a kneader at about 170°C for about 10 minutes, and then press at about 180°C to form sheets and plates of required thickness for performance testing after accelerated aging. (1#: PVC sample added with 0.5phr reactive light stabilizer; 2#: PVC sample added with 3phr vibration-milled light stabilizer)

[0047]

[0048]

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PUM

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Abstract

The invention discloses a PVC ultraviolet stabilizer, light resistant PVC containing the ultraviolet stabilizer and a method for preparing the ultraviolet stabilizer. The main components of the novel PVC ultraviolet stabilizer include a reaction type light stabilizer and PVC resin. The main components of the light resistant PVC include PVC resin, an ultraviolet stabilizer, a thermal stabilizer and a lubricant. The method for preparing the light stabilizer comprises the following step: putting the reaction type light stabilizer and the PVC resin in vibration grinding equipment in weight proportion for a solid phase mechanochemical reaction to prepare the novel ultraviolet stabilizer. For PVC products containing the light stabilizer, the long-term retention rate of the comprehensive property is greatly improved. The ultraviolet stabilizer can be applied to various products such as polyvinyl chloride pipes, profiled bars, panels and the like.

Description

technical field [0001] The invention relates to the technical field of polymers, more specifically to an ultraviolet light stabilizer for polyvinyl chloride (PVC) and PVC containing the ultraviolet light stabilizer, as well as a preparation method for the ultraviolet light stabilizer. technical background [0002] The conventional technical means of anti-ultraviolet aging of PVC materials is to add a certain amount of organic ultraviolet light stabilizers to the material body, such as phenyl salicylate, o-hydroxybenzophenone, o-hydroxytriazoles and triazines. However, the commonly used organic UV light stabilizers have small molecular weight and are easy to migrate. When used outdoors for a long time, they will be gradually lost due to surface volatilization and extraction by rainwater and other liquids, resulting in a greatly reduced light stabilization efficiency in PVC materials. Therefore, in order to prevent the physical loss of the light stabilizer and improve the ligh...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/3475C08K5/3432C08K5/13
Inventor 郭少云张晓飞皮红陈跃
Owner SICHUAN UNIV
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