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Release agent, manufacturing method thereof and rotational moulding technology using release agent

A manufacturing method and release agent technology, applied in the direction of coating, etc., can solve problems such as difficult to remove oligomer agglomeration, produce fluorocarbons, and damage the environment, so as to reduce mold scale production, improve compactness, and shorten production The effect of cycle length

Active Publication Date: 2019-07-09
CRM PLASTIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing plastic processing process, there are problems of mold scale in the process of using molds, including the decomposition products of plastic resin, the precipitation of additives or stabilizers, the decomposition of mold release agents, and the residues of high temperature reactions, which adhere to the mold. Difficult-to-remove oligomer clumps form on the inner side of
Existing inorganic mold release agents tend to leave mold scale and traces on the product surface during use; organic mold release agents are similar to inorganic mold release agents, and are easy to decompose during use, leaving more mold scale; high Although the polymer release agent produces less mold scale and can be used many times, it is expensive and some of them will produce fluorocarbons during use, polluting and damaging the environment, so it needs to be improved

Method used

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  • Release agent, manufacturing method thereof and rotational moulding technology using release agent
  • Release agent, manufacturing method thereof and rotational moulding technology using release agent
  • Release agent, manufacturing method thereof and rotational moulding technology using release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0050] A release agent, the preparation steps of the release agent are as follows:

[0051] S1: under normal temperature and pressure, add 20 parts of absolute ethanol into the reactor by mass fraction;

[0052] S2: add 50 parts of ethyl silicone oil and 20 parts of wax components into the reaction kettle for heating and stirring according to parts by mass, the heating temperature is 66°C, fully dissolve and then cool to normal temperature;

[0053] S3: add 20 parts of gas phase silica and 7 parts of sodium dodecyl benzene sulfonate in the reaction kettle by mass fraction and stop stirring after stirring.

Embodiment B1

[0076] A release agent, the preparation steps of the release agent are as follows:

[0077] S1: under normal temperature and pressure, add 20 parts of absolute ethanol into the reactor by mass fraction;

[0078] S2: add 50 parts of metered ethyl silicone oil and 20 parts of wax components into the reactor for heating and stirring by mass parts, and the heating temperature is 66 ° C, and it is fully dissolved and cooled to normal temperature;

[0079] S3: add 20 parts of fumed silica, 7 parts of sodium dodecylbenzene sulfonate and 5 parts of aluminum ethoxide into the reaction kettle by mass fraction and stop stirring after stirring.

[0080] The release agent obtained in Example A1 and Example B1 was subjected to an anti-dropping durability test.

[0081] Anti-shedding durability test: Use different sample release agents to perform rotational molding of the same product and the same mold. After each production cycle is completed, check the coverage of the release agent on the...

Embodiment C1

[0087] The steps are the same as in Example A1, and the proportions of each raw material in parts by mass are: 50 parts of ethyl silicone oil, 22 parts of fumed silica, 7 parts of sodium dodecyl benzene sulfonate, 20 parts of anhydrous ethanol, wax 20 components.

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Abstract

The invention relates to the field of plastic forming, and discloses a release agent, a manufacturing method thereof and a rotational moulding technology using the release agent. The release agent isprovided and formed by mixing following raw materials including, by mass, 50 parts of ethyl silicone oil, 20-25 parts of gas phase white carbon black, 7-10 parts of sodium dodecyl benzene sulfonate, 20-40 parts of absolute ethyl alcohol and 20-28 parts of a wax component, wherein the wax component is formed by mixing paraffin and microcrystalline wax according to the mass ratio of 1:1, the effectof die dirt generation reducing is achieved, and the gas phase white carbon black and the wax component are used for filling so that cost can be reduced.

Description

technical field [0001] The invention relates to the field of plastic molding, in particular to a mold release agent, a manufacturing method thereof, and a rotational molding process using the same. Background technique [0002] Rotational molding, also known as rotational molding, is a thermoplastic hollow molding method. The method is to first add plastic raw materials into the mold, and then the mold is continuously rotated along two vertical axes and heated. Under the action of , it is gradually and uniformly coated and melted onto the entire surface of the cavity, formed into the desired shape, and then cooled and shaped to form a product, which is suitable for processing large-scale hollow products with complex shapes. At the same time, the choice of mold release agent is particularly important in the process of rotomolding large-scale hollow products with complex shapes. The adhesion between the plastic material and the mold makes the rubber and plastic material easy ...

Claims

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Application Information

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IPC IPC(8): B29C33/64B29C41/06B29C41/34
CPCB29C33/64B29C41/06B29C41/34
Inventor 陈建培
Owner CRM PLASTIC INC
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