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A kind of anti-shrinkage agent for plastic processing and preparation method thereof

A technology of anti-shrinkage agent and plastics, which is applied in the field of polymer materials, can solve the problems of poor high-temperature resistance and compatibility of anti-shrinkage agents, and achieve the effects of no dust generation, simple production process, and low energy consumption

Active Publication Date: 2016-10-05
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the technical deficiencies of the high temperature resistance of the anti-shrinkage agent in the plastic processing process and the poor compatibility with the resin in the prior art, the invention provides a kind of anti-shrinkage agent for plastic processing, which consists of glyceryl monostearate Composed of pentaerythritol ester, the anti-shrinkage agent prepared by mixing and melting the two liquid phases not only has excellent support test performance, but also has the advantages of high temperature resistance and good compatibility with resins, and is suitable for popularization and application in the field of plastic processing

Method used

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  • A kind of anti-shrinkage agent for plastic processing and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 A kind of anti-shrinkage agent for plastic processing and its preparation method

[0020] An anti-shrinkage agent for plastic processing, which is prepared from the following components:

[0021] Glyceryl monostearate

[0022] The preparation method of the anti-shrinkage agent is as follows: take glyceryl monostearate from the storage tank coming down from the molecular distillation column and inject it into the liquid-phase mixed-melting reaction kettle, start stirring, and synchronously put the mono / dipentaerythritol ester into the liquid-phase mixed-melt In the kettle, add an appropriate amount of coupling agent or / and chelating agent, after the addition, keep warm at 90°C-100°C under negative pressure conditions, react for 30-50min, vent to reduce the negative pressure, and send it to the powder spraying tower to spray powder, granulator Granulate and compress with a tablet machine to obtain the anti-shrinkage agent.

Embodiment 2

[0023] Example 2 A kind of anti-shrinkage agent for plastic processing and its preparation method

[0024] An anti-shrinkage agent for plastic processing, which is prepared from the following components:

[0025] Glyceryl monostearate

[0026] The preparation method of the anti-shrinkage agent is as follows: take glyceryl monostearate from the storage tank coming down from the molecular distillation column and inject it into the liquid-phase mixed-melting reaction kettle, start stirring, and synchronously put the mono / dipentaerythritol ester into the liquid-phase mixed-melt In the kettle, add an appropriate amount of coupling agent or / and chelating agent, after the addition, keep warm at 90°C-100°C under negative pressure conditions, react for 30-50min, vent to reduce the negative pressure, and send it to the powder spraying tower to spray powder, granulator Granulate and compress with a tablet machine to obtain the anti-shrinkage agent.

Embodiment 3

[0027] Example 3 A kind of anti-shrinkage agent for plastic processing and its preparation method

[0028] An anti-shrinkage agent for plastic processing, which is prepared from the following components:

[0029] Glyceryl monostearate

[0030] The preparation method of the anti-shrinkage agent is as follows: take glyceryl monostearate from the storage tank coming down from the molecular distillation column and inject it into the liquid-phase mixed-melting reaction kettle, start stirring, and synchronously put the mono / dipentaerythritol ester into the liquid-phase mixed-melt In the kettle, add an appropriate amount of coupling agent or / and chelating agent, after the addition, keep warm at 90°C-100°C under negative pressure conditions, react for 30-50min, vent to reduce the negative pressure, and send it to the powder spraying tower to spray powder, granulator Granulate and compress with a tablet machine to obtain the anti-shrinkage agent.

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Abstract

Belonging to the field of high polymer materials, the invention relates to an antishrinking agent for plastic processing and a preparation method thereof. In order to overcome the technological disadvantages of poor high temperature resistance and compatibility with resin of antishrinking agents during plastic processing in the prior art, the invention provides the antishrinking agent for plastic processing. The antishrinking agent is composed of glyceryl monostearate and pentaerythritol ester, the two substances are subjected to liquid phase mixed melting to obtain the antishrinking agent, which not only has excellent supporting degree test performance, but also has the advantages of high temperature resistance and good compatibility with resin, and is suitable for popularization and application in the field of plastic processing.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to an anti-shrinkage agent for plastic processing and a preparation method thereof. Background technique [0002] At present, the foaming process of plastic products after adding a foaming agent usually uses peroxygen compounds, which can increase the foaming temperature and extrusion temperature, which can easily cause scorch problems. On the other hand, peroxygen compounds are also easy to corrode mechanical equipment and molds , thereby reducing the service life of mechanical equipment and molds. Moreover, other auxiliary agents need to be added in the foaming process, but due to the poor compatibility between the auxiliary agent and the foaming agent, the uniformity and support of the foaming agent will also decrease, thereby affecting the quality of the product with the foaming agent added. Usually plastic anti-shrinkage agents can be added to improve the support of the product....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08K5/103C08K5/10
Inventor 徐怀义马银官
Owner GUANGZHOU CARDLO BIOCHEM TECH