Polystyrene blow molding release agent

A technology of polystyrene and mold release agent, applied in the field of mold release agent, can solve the problems of decreased production efficiency, insufficient heat resistance and self-cleaning performance, deterioration of components, etc., and achieves improved temperature, good mold release lubrication effect, Improve the effect of functional effects

Inactive Publication Date: 2018-12-21
HEFEI TONGYOU ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary wax-based release agents use liquid paraffin or microcrystalline wax with a lower melting point. These components and organic solvents, etc., greatly reduce the release effect under high temperature conditions, and need to be re-sprayed after every 1-2 releases , leading to a great drop in production efficiency, and also causing pollution and damage to the environment
The heat resistance and self-cleaning properties of other release aid components in common release agents are also relatively insufficient, and there are even problems such as deterioration of components due to high state, insufficient dispersibility, affecting release effect and damaging injection molded products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A polystyrene blow mold release agent, according to the mass parts, the blow mold release agent contains the following ingredients: 100 parts of organic solvent, 4 parts of polyethylene wax, 10 parts of methyl silicone resin, 3 parts of release aid, 2 parts of alkyl phenol, 10 parts of ashless dispersant.

[0033] The ashless dispersant is polyisobutylene succinimide. In the preparation process of polyisobutylene succinimide, the average molecular weight of the selected polyisobutylene substituent is 1500-2000.

[0034] The average molecular weight of polyethylene wax is 2000-3000.

[0035] The alkylphenol is 1,2-didecylphenol.

[0036] The organic solvent is white oil.

[0037] In this embodiment, the preparation method of the release aid is: according to the mass parts, 35 parts of calcium salicylate, 50 parts of mineral oil, 5 parts of dodecylbenzene sulfonic acid, 1 part of hydroxystearic acid and 10 parts of Deionized water is added to the reactor, the temperature of the r...

Embodiment 2

[0043] A polystyrene blow mold release agent, according to the mass parts, the blow mold release agent contains the following ingredients: 120 parts of organic solvent, 8 parts of polyethylene wax, 15 parts of methyl silicone resin, 7 parts of release aid, 5 parts of alkyl phenol, 13 parts of ashless dispersant.

[0044] The ashless dispersant is polyisobutylene succinimide. In the preparation process of polyisobutylene succinimide, the average molecular weight of the selected polyisobutylene substituent is 1500-2000.

[0045] The average molecular weight of polyethylene wax is 2000-3000.

[0046] The alkylphenol is 2,4-didecylphenol.

[0047] The organic solvent is cyclohexanone.

[0048] In this embodiment, the preparation method of the release aid is: according to the mass parts, 35 parts of calcium salicylate, 50 parts of mineral oil, 5 parts of dodecylbenzene sulfonic acid, 1 part of hydroxystearic acid and 10 parts of Deionized water is added to the reactor, the temperature of t...

Embodiment 3

[0054] A polystyrene blow mold release agent, according to the mass parts, the blow mold release agent contains the following ingredients: 108 parts of organic solvent, 6 parts of polyethylene wax, 13 parts of methyl silicone resin, 5 parts of release aid, 3.5 parts of alkylphenol, 12 parts of ashless dispersant.

[0055] The ashless dispersant is polyisobutylene succinimide. In the preparation process of polyisobutylene succinimide, the average molecular weight of the selected polyisobutylene substituent is 1500-2000.

[0056] The average molecular weight of polyethylene wax is 2000-3000.

[0057] The alkylphenol is 2,4-dinonylphenol.

[0058] The organic solvent is 180# solvent gasoline.

[0059] In this embodiment, the preparation method of the release aid is: according to the mass parts, 35 parts of calcium salicylate, 50 parts of mineral oil, 5 parts of dodecylbenzene sulfonic acid, 1 part of hydroxystearic acid and 10 parts of Deionized water is added to the reactor, the tempera...

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PUM

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Abstract

The invention relates to the technical field of release agents, in particular to a polystyrene blow molding release agent. The blow molding release agent comprises the following components including an organic solvent, polyethylene wax, methyl silicone resin, a release accelerating agent, alkylphenol and a non-ash dispersing agent. The release accelerating agent is a lubricating type calcium salicylate type substance with high temperature resisting performance. The non-ash dispersing agent is polyisobutene succinimide, and in the preparing process of the polyisobutene succinimide, the averagemolecular weight of selected polyisobutene substituent groups is 1500-2000; the average molecular weight of the polyethylene wax is 2000-3000; the alkylphenol is one of 1,2-didecyl phenol, 2,4-didecylphenol and 2,4-dinonyl phenol; and the organic solvent is selected from one of white oil, cyclohexanone and 180# solvent gasoline. The polystyrene blow molding release agent is good in stability, high in chemical inertness, prominent in high temperature resisting performance and very suitable for polystyrene blow molding release use.

Description

Technical field [0001] The invention relates to the technical field of release agents, in particular to a polystyrene blow molding release agent. Background technique [0002] Polystyrene refers to a polymer synthesized from styrene monomer through radical addition polymerization. It is a colorless and transparent thermoplastic with a high glass transition temperature. Therefore, it is often used to make various types of polymers that need to withstand the temperature of boiling water. Disposable containers, and disposable foam lunch boxes, etc. The glass transition temperature of polystyrene is 80-105℃, the embrittlement temperature is about -30℃, the melting temperature is 140-180℃, and the decomposition temperature is above 300℃. Since the mechanical properties of polystyrene decrease significantly with the increase of temperature and its heat resistance is poor, the continuous use temperature is about 60℃, and the highest should not exceed 80℃. The usual polystyrene is an a...

Claims

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Application Information

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IPC IPC(8): B29C33/64
CPCB29C33/64
Inventor 李丹丹
Owner HEFEI TONGYOU ELECTRONICS TECH CO LTD
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