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Ca/Mg/Zn composite stabilizer for polyvinyl chloride and preparation method thereof

A composite stabilizer, polyvinyl chloride technology, applied in the field of plastic processing, to achieve the effect of bright surface

Inactive Publication Date: 2010-10-27
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the above problems, Ca / Mg / Zn stabilizer for polyvinyl chloride of the present invention and preparation method aim at solving the following technical problems

Method used

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  • Ca/Mg/Zn composite stabilizer for polyvinyl chloride and preparation method thereof
  • Ca/Mg/Zn composite stabilizer for polyvinyl chloride and preparation method thereof
  • Ca/Mg/Zn composite stabilizer for polyvinyl chloride and preparation method thereof

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Embodiment 1

[0028] according to figure 1 The preparation method of Ca / Mg / Zn composite stabilizer stabilizer for polyvinyl chloride is to mix 5 parts of elemental Ca, 10 parts of elemental Mg, and 20 parts of elemental Zn, and heat the mixture to 180°C to melt the mixture to form a Ca / Zn complex and Mg / Zn complex, then add 10 parts of functional zeolite and auxiliary stabilizer, mix well, extrude and granulate with a twin-screw extruder, and then pulverize the granules to obtain powder.

Embodiment 2

[0030] according to figure 1 Preparation method of Ca / Mg / Zn composite stabilizer stabilizer for polyvinyl chloride, 5 parts of calcium stearate, 10 parts of zinc laurate, 5 parts of hydrotalcite, mix well, heat the mixture to 160 ° C to melt the mixture to form Ca / Zn complex and Mg / Zn complex are added with 10 parts of functional zeolite and auxiliary stabilizer, mixed evenly, extruded and granulated with a twin-screw extruder, and then pulverized to obtain powder.

Embodiment 3

[0032] according to figure 1 Preparation method of Ca / Mg / Zn composite stabilizer stabilizer for polyvinyl chloride, 5 parts of calcium stearate, 10 parts of zinc laurate, 5 parts of magnesium carbonate, mix well, heat the mixture to 160 ° C to melt the mixture to form Ca / Zn complex and Mg / Zn complex are added with 10 parts of functional zeolite and auxiliary stabilizer, mixed evenly, extruded and granulated with a twin-screw extruder, and then pulverized to obtain powder.

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Abstract

The invention relates to a Ca / Mg / Zn composite stabilizer for polyvinyl chloride and a preparation method thereof. The stabilizer is prepared by adding functional zeolite and auxiliary stabilizer based on Ca salt, Mg salt and Zn salt, and mainly comprises 5-6 parts of Ca / Zn and Mg / Zn complex compounds, 0.1-5.0 parts of functional zeolite and 0.1-5.0 parts of auxiliary stabilizer. The prepared method of the Ca / Mg / Zn composite stabilizer for polyvinyl chloride comprises the following steps: heating the simple substances and compounds of Ca, Mg and Zn elements till melting at the temperature 140-180 degrees centigrade, preparing Ca / Zn and Mg / Zn complex compounds, adding functional zeolite, high-temperature lubricant, antioxidant and the auxiliary stabilizer such as processing agent and mixing at a high speed, and pelleting through an extruder, and crashing into powder from granules. In the invention, 2-3 parts of stabilizer is added in 100 parts of PVC, the cost is low, and the stabilizer has self-lubricating property.

Description

Technical field [0001] The invention relates to the field of plastic processing, and in particular to a Ca / Mg / Zn composite stabilizer composition for polyvinyl chloride and a preparation method thereof. technical background [0002] PVC came out more than 120 years ago. Due to its poor thermal stability, heat stabilizers are often added. The first one used was PbO, followed by lead salts, organotin, Ba / Cd, Ca / Zn and other stabilizers. Our country has mainly used lead salt stabilizers for a long time. From the 1990s to the present, the detoxication of stabilizers has mainly focused on Ca / Zn stabilizers. There is still a big gap between domestic Ca / Zn stabilizers and imported products. PVC hard products The Ca / Zn stabilizer used still relies on imports. In order to improve the stabilizing effect of Ca / Zn stabilizer, the patent CN163 1963A uses organotin to improve the stabilizing effect of Ca / Zn. However, because organotin contains heavy metal Sn and has a strong odor, people...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/08C08K3/34C08K5/098C08K3/22C08K3/26
Inventor 许家友周细濠谢丽琼
Owner GUANGZHOU UNIVERSITY