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Composite calcium-zinc heat stabilizer composition as well as preparation method and application thereof

A heat stabilizer and composite calcium-zinc technology, applied in the field of composite calcium-zinc heat stabilizer composition and its preparation, can solve the problems of poor long-term thermal stability, prolong the thermal stability time of PVC pipe materials, etc., and achieve the effect of excellent effect

Inactive Publication Date: 2021-10-01
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of poor long-term thermal stability described in the prior art, the present invention provides a composite calcium-zinc thermal stabilizer composition, which comprises modified fumed silica, terminal hydroxyl Pentaerythritol adipate and calcium zinc heat stabilizer can effectively prolong the heat stability time of PVC pipe materials, and have excellent long-term heat stabilization effect on PVC

Method used

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  • Composite calcium-zinc heat stabilizer composition as well as preparation method and application thereof
  • Composite calcium-zinc heat stabilizer composition as well as preparation method and application thereof
  • Composite calcium-zinc heat stabilizer composition as well as preparation method and application thereof

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preparation example Construction

[0061] Among them, in the preparation method of hydroxy-terminated adipate A, the molar ratio of hydroxy-terminated adipate to pentaerythritol is 1:2, the esterification reaction temperature is 150° C., and the reaction time is 4 hours. The prepared hydroxy-terminated pentaerythritol adipate The acid value of A is 0.2mgKOH / g, and the hydroxyl value is 90mgKOH / g;

[0062] In the preparation method of hydroxy-terminated adipate B, the molar ratio of hydroxy-terminated adipate to pentaerythritol is 1.5:2, the esterification reaction temperature is 150°C, and the reaction time is 4h. The prepared hydroxy-terminated pentaerythritol adipate B The acid value is 0.35mgKOH / g, and the hydroxyl value is 70mgKOH / g;

[0063] In the preparation method of pentaerythritol adipate C, the molar ratio between adipic acid and pentaerythritol is 1:2, the esterification reaction temperature is 170°C, and the reaction time is 2 hours. The pentaerythritol adipate C The acid value is 0.31mgKOH / g, and...

Embodiment 1～13

[0069] Embodiments 1 to 13 respectively provide a composite calcium-zinc heat stabilizer composition, the contents of each component are shown in Table 1, and the preparation method is: mix the components uniformly according to Table 1 to obtain the composite calcium-zinc heat stabilizer composition .

[0070] The component content (parts by weight) of the composite calcium-zinc heat stabilizer composition of table 1 embodiment 1~13

[0071]

[0072]

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Abstract

The invention discloses a composite calcium-zinc heat stabilizer composition as well as a preparation method and application thereof. The composite calcium-zinc heat stabilizer composition comprises the following components in parts by weight: 10 parts of a calcium-zinc heat stabilizer, 0.2-2 parts of modified fumed silica and 0.2-2 parts of hydroxyl-terminated pentaerythritol adipate; and the modified fumed silica is fumed silica modified by a silane coupling agent. The hydroxyl-terminated pentaerythritol adipate has good compatibility with PVC, so that the heat stability is improved, and the precipitation of a heat stabilizer is reduced; and the surface of the modified fumed silica modified by a silane coupling agent has silanol groups, so that the modified fumed silica can easily adsorb substances capable of forming hydrogen bonds with the silanol groups. The composite calcium-zinc heat stabilizer composition with excellent heat stability is obtained through cooperative use and synergistic interaction of the modified fumed silica, the hydroxyl-terminated pentaerythritol adipate and the calcium-zinc heat stabilizer.

Description

technical field [0001] The invention relates to the technical field of PVC heat stabilizers, and more specifically, relates to a composite calcium-zinc heat stabilizer composition and a preparation method and application thereof. Background technique [0002] PVC pipe has excellent flame retardancy, wear resistance, chemical corrosion resistance, mechanical properties, electrical insulation and other advantages, and has been widely used in industry, construction, municipal, agriculture and other fields. There are tertiary chlorine and tertiary hydrogen structures in the PVC molecular chain, and its bond energy is low, so it is easy to remove HCl to generate free radicals, causing the PVC molecular chain to be unstable. 2 , high temperature, and light conditions will degrade and age. The decomposition temperature of PVC resin is about 130°C, but the molding temperature of PVC resin is above 180°C. Therefore, in order to realize the processability of PVC resin, it is necessar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K7/26C08K5/11C08K5/098C08L27/06
CPCC08K9/06C08K7/26C08K5/11C08K5/098C08L27/06C08L2203/18C08L2201/08C08K2201/014
Inventor 宋科明李统一陈国南郑先伟
Owner GUANGDONG LIANSU TECH INDAL