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Novel calcium / zinc composite heat stabilizer composition and use thereof

A composite heat stabilizer and composition technology, applied in the field of polymer materials, to achieve good compatibility and high stabilization efficiency

Active Publication Date: 2009-05-27
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain problems in the compatibility of these small molecular zinc salts with chlorine-containing resins, and they cannot be well dispersed in chlorine-containing resins to better exert their stabilizing effect.

Method used

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  • Novel calcium / zinc composite heat stabilizer composition and use thereof

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Experimental program
Comparison scheme
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Embodiment 1-12

[0021] The zinc soap, calcium soap, polyol, and antioxidant are mixed uniformly in a high-speed mixer in proportion to prepare the calcium / zinc heat stabilizer composition of the present invention. The specific formula design is shown in Table 1.

[0022] Table 1 Heat stabilizer composition formula

[0023]

[0024] Remarks: MMA stands for methyl methacrylate; based on 100g of chlorine-containing resin, the units in the table are all g.

[0025] The composition prepared in the above example, 40 parts by mass of dioctyl phthalate (DOP) and 100 parts by mass of PVC resin (S-1000) are mixed uniformly in a high-mixer, and the roll temperature is 140°C and the roll distance Plasticized into pieces on a 1mm double-roll mixer, then cut pellets and fill them into test tubes, aged in an oil bath at 180°C, and then measure the static thermal stability according to the national standard GB / T2917.1-2002 Congo red method, and record the thermal stability time , The results are shown in Table...

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PUM

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Abstract

The invention relates to a calcium / zinc composite thermal stabilizer composition with superior thermal stability and application thereof. The composition is prepared by uniformly mixing calcium soap, macromolecular zinc soap, polyatomic alcohol and an antioxidant according to the mixture ratio under the conditions of normal temperature and normal pressure. The composite stabilizer composition has good thermal stability and coloring resistance on chlorine-containing resin, has the characteristics of non-toxicity, no heavy metal pollution and so on, avoids high cost of an organic tin stabilizer and toxicity of a lead stabilizer and a cadmium stabilizer, and has certain practical value.

Description

Technical field: [0001] The invention relates to the field of polymer materials, in particular to a calcium / zinc composite heat stabilizer composition with excellent thermal stability and its application in the fields of chlorine-containing resin extrusion, injection molding and the like. Background technique: [0002] Chlorine-containing resins, especially rigid vinyl chloride resins, have the advantages of being difficult to burn, high mechanical properties, and low prices, and have been used in water and sewage pipes, rain gutters, window frames, etc. It is the second largest general-purpose thermoplastic after polyolefins, but vinyl chloride resins have poor stability to heat and light. Its flow temperature is 136°C, and its decomposition temperature is 140°C. The difference between the two is only 4°C, which is suitable for processing and use. It brings a lot of inconvenience, so it is essential to use various additives to improve its processing and use performance. The earl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/098C08K5/053C08K5/134C08L33/02C08L35/00C08L27/06C08L23/28C08L27/24C08K13/02C08K5/372
Inventor 陈苏陈莉杨健张冬黄旭
Owner NANJING UNIV OF TECH
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