A kind of PVC heat stabilizer and preparation method thereof

A heat stabilizer and stabilizer technology, which is applied in the field of PVC heat stabilizer and its preparation, can solve the problems of poor heat stability of PVC, and achieve the effects of high heat stabilization efficiency, cost reduction, and production cost reduction

Active Publication Date: 2019-05-07
SHAOXING HONGRUN FIRE CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC has the disadvantage of poor thermal stability, and heat stabilizers must be properly added during processing to inhibit the thermal degradation of PVC.

Method used

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  • A kind of PVC heat stabilizer and preparation method thereof
  • A kind of PVC heat stabilizer and preparation method thereof
  • A kind of PVC heat stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A PVC heat stabilizer, the components of which are: 100 parts of alkali slag stabilizer; 33 parts of fatty acid zinc; 11 parts of β-diketone; 28 parts of phosphite.

[0043] The steps of the specific preparation method are as follows:

[0044] (1) Take the waste liquid after the alkali production by the ammonia-soda method, after precipitation, remove the lower layer of slurry-like waste residue, add it dropwise in the aqueous sodium stearate solution, continue to stir, and carry out the double decomposition reaction. After the reaction is over, the reaction product is press-filtered and washed with water and drying to obtain the alkali slag stabilizer;

[0045] (2) The alkali slag stabilizer is mixed with zinc stearate, β-diketone and phosphite to obtain a PVC heat stabilizer.

[0046] The waste liquid chemical composition after the ammonia-soda method alkali production of certain alkali factory involved in the present embodiment is as follows (in the volume of waste li...

Embodiment 2

[0054] Except that the mass fraction of calcium stearate in the alkali slag stabilizer used in this embodiment is 95%, the dosage and preparation method of the remaining components are exactly the same as those in Example 1.

Embodiment 3

[0058] Except that the mass fraction of calcium stearate in the alkali slag stabilizer used in this embodiment is 85%, the dosage and preparation method of the remaining components are exactly the same as those in Example 1.

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Abstract

The invention discloses a PVC (Polyvinyl Chloride) thermal stabilizer and a preparation method thereof. The PVC thermal stabilizer is prepared from the following components in parts by weight: 100 parts of an alkaline slag stabilizer, 25 to 50 parts of zinc fatty acid, 5 to 20 parts of beta-diketone and 20 to 40 parts of an antioxidant. The preparation method of the alkaline slag stabilizer comprises the following steps: taking waste liquid obtained after preparing alkalithrough an ammonia-alkali process; mixing the waste liquid with soluble stearate and carrying out metathesis reaction; after reacting, carrying out filtering, water washing and drying to obtain the alkaline slag stabilizer. The PVC thermal stabilizer provided by the invention has high thermal stabilization efficiency; the preparation method of the PVC thermal stabilizer reasonably utilizes the waste liquid discharged from an alkali plant, so that water materials are recycled and the cost of a product is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of auxiliary agent preparation, in particular to a PVC heat stabilizer and a preparation method thereof. Background technique [0002] In the field of plastics, polyvinyl chloride (PVC) is one of the five general-purpose plastics, its output is second only to polyethylene (PE), and its products have a wide range of uses. However, PVC has the disadvantage of poor thermal stability, and heat stabilizers must be properly added during processing to inhibit the thermal degradation of PVC. [0003] There are many studies on PVC heat stabilizers, such as: [0004] (1) The invention patent application with the application publication number CN106280064A discloses a PVC heat stabilizer containing calixarene, and its components are calculated in parts by mass: 20-50 parts of fatty acid calcium; 20-50 parts of fatty acid zinc; 8-15 parts of stabilizer; 5-10 parts of calixarene; 3-5 parts of lubricant; 5-8 parts of an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/04C08K5/098C08K5/07C08K7/24C08K7/26C08K5/526
CPCC08K5/07C08K5/098C08K5/526C08K7/24C08K7/26C08K13/04C08K2201/014C08L2201/08C08L27/06
Inventor 李玉浜任洪芳
Owner SHAOXING HONGRUN FIRE CONTROL EQUIP
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