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Zinc soap-mannitol composite heat stabilizer for polyvinyl chloride, preparation method and application

A compound heat stabilizer and polyvinyl chloride technology, applied in the field of preparation of zinc soap-mannitol compound heat stabilizer for polyvinyl chloride, can solve the problems of poor PVC compatibility, easy precipitation, high melting point of pentaerythritol, and achieve lubricity. Excellent, good coloring, good internal and external lubricity effect

Inactive Publication Date: 2017-10-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pentaerythritol has a high melting point, poor compatibility with PVC, and is easy to precipitate

Method used

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  • Zinc soap-mannitol composite heat stabilizer for polyvinyl chloride, preparation method and application
  • Zinc soap-mannitol composite heat stabilizer for polyvinyl chloride, preparation method and application
  • Zinc soap-mannitol composite heat stabilizer for polyvinyl chloride, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Zinc stearate (18.96g, 0.03mol) and mannitol (5.47g, 0.03mol) were added to a 500mL three-necked flask at a molar ratio of 1:1, mechanically stirred at a stirring rate of 100rpm, and under a nitrogen atmosphere, The reaction was carried out in an oil bath at 200° C. for 2 hours. After cooling, the product is ground into fine powder, and sieved with a 200-mesh steel sieve to obtain the zinc stearate-mannitol compound.

[0029] Fourier transform infrared spectrometer was used to characterize the chemical structure of zinc stearate, mannitol and zinc stearate-mannitol complex, the results are as follows figure 1 shown. Potassium bromide grinding tablet method is used to prepare samples, and the scanning range is 4000~400cm -1 .

[0030] figure 1 Among them, a is the infrared spectrum of zinc stearate, b is the infrared spectrum of zinc stearate-mannitol complex, and c is the infrared spectrum of mannitol. like figure 1 As shown in a, 2848cm -1 and 2918cm -1 It is t...

Embodiment 2

[0032] Zinc stearate (18.96g, 0.03mol) and mannitol (1.82g, 0.01mol) were added into a 500mL three-necked flask at a molar ratio of 3:1, mechanically stirred at a stirring rate of 50rpm, and under a nitrogen atmosphere, React in an oil bath at 180°C for 4 hours. After cooling, the product is ground into fine powder, and sieved with a 200-mesh steel sieve to obtain the zinc stearate-mannitol compound.

Embodiment 3

[0034] Zinc laurate (13.92g, 0.03mol) and mannitol (0.55g, 0.003mol) were added into a 500mL three-necked flask at a molar ratio of 10:1, mechanically stirred at a stirring rate of 250rpm, under a nitrogen atmosphere, in React in an oil bath at 140°C for 8 hours. After cooling, the product was ground into a fine powder and sieved with a 200-mesh steel sieve to obtain the zinc laurate-mannitol complex.

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Abstract

The invention discloses a zinc soap-mannitol composite heat stabilizer for polyvinyl chloride (PVC) and a preparing method and application thereof. The heat stabilizer is a composition generated after zinc soap reacts with mannitol and is prepared from zinc soap, zinc soap-mannitol complex, mannitol and dehydrated mannitol. The raw material source is wide, the technology is simple and environmentally friendly, cost is low, production efficiency is high, and product performance is easy to control. The composite heat stabilizer is high in initial coloration property, well compatible with a PVC matrix, easy to disperse, capable of effectively improving the long-term heat stability of PVC, high in inside and outside lubricity, excellent in comprehensive performance, and capable of solving the problem of poor heat stability of existing environment-friendly PVC heat stabilizers.

Description

technical field [0001] The invention relates to the field of polymer material additives, in particular to a zinc soap-mannitol composite heat stabilizer for polyvinyl chloride, a preparation method and application. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized plastic varieties, and its current output ranks second. It has excellent mechanical properties, good electrical properties, chemical corrosion resistance, flame retardancy, and low gas and water vapor permeability. Features. With its excellent comprehensive performance, diverse varieties and low price, PVC is widely used in construction, chemical industry, electronic and electrical and packaging materials and other industries. PVC has good processing performance and can be processed by extrusion, blow molding, injection molding, calendering, coating, etc. It is mainly used to produce hard products such as pipes, sheets, and profiled materials, and soft products such as ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/098C08K5/053C08L23/28C08L33/04
CPCC08K5/053C08K5/098C08K2201/014C08L27/06C08L2201/08C08L2205/035C08L23/286C08L33/04C08L91/06C08K5/09
Inventor 朱理智申屠宝卿吴亦建
Owner ZHEJIANG UNIV