A modified reaction device and preparation process of an environment-friendly PVC heat stabilizer

By using a multi-unit continuous closed-loop production system and PLC control, the problems of zinc burning and low equipment efficiency in calcium-zinc composite PVC heat stabilizers have been solved, achieving efficient and environmentally friendly PVC heat stabilizer production.

CN122321773APending Publication Date: 2026-07-03HUANGSHAN JIABAO NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANGSHAN JIABAO NEW MATERIAL TECH CO LTD
Filing Date
2026-04-02
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing calcium-zinc composite PVC heat stabilizers are prone to zinc burning, resulting in unstable product quality. Furthermore, the preparation equipment suffers from problems such as uneven material mixing, low temperature control accuracy, and inability to achieve continuous production.

Method used

Design a multi-unit continuous closed-loop production system that includes raw material pretreatment, mixing and dispersion, modification reaction, cooling and molding, and finished product collection. The system adopts a PLC control system to achieve automation and is equipped with a high-speed disperser, constant temperature control and exhaust gas treatment components to ensure uniform mixing of materials and precise temperature control.

Benefits of technology

It effectively inhibits zinc burning, improves product thermal stability, increases production efficiency, reduces material waste, meets green and environmentally friendly production requirements, and ensures product quality stability and consistency.

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Abstract

The application discloses a kind of modification reaction equipment and preparation process of environment-friendly PVC heat stabilizer, belong to PVC heat stabilizer production field.Equipment contains sequentially connected raw material pretreatment, mixed dispersion, modification reaction, cooling forming, finished product collection unit, form continuous closed loop structure, realize automation control with matched PLC control system, each unit is equipped with tail gas treatment component with targeted optimization structure.Preparation process is mainly with calcium zinc stearate soap as stabilizer, trimethylolpropane-water talc as auxiliary stabilizer, stearic acid-phosphite as modifier, after pretreatment, mixed dispersion, 140-160 DEG C / 0.1-0.15MPa modification reaction, cooling pelletizing, screening detection product, catalyst is added twice, unqualified product reflux reprocessing.The application solves the problem of existing calcium zinc composite stabilizer zinc burning, product quality instability, realizes continuous environmental protection production, and the product heat stabilizing performance is excellent, and production efficiency, raw material utilization rate is high, adapts to PVC multiple product production demand.
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