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A biodegradable polyurethane releasing agent and a preparing method thereof

A biodegradable polyurethane technology, applied in the field of high-resolution additives, can solve the problems of inconspicuous demoulding effect and high cost, and achieve good heat insulation effect, low cost and good demoulding effect

Inactive Publication Date: 2015-07-08
SUZHOU JINGRO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

③ Fluorine series - the best isolation performance, less pollution to the mold, but high cost polytetrafluoroethylene; fluororesin powder; fluororesin coating, etc.
[0004] Chinese patent (201410370841.1) discloses a polyurethane water-based release agent, using water as a solvent, adding emulsified wax liquid, methyl silicone oil emulsion, modified silicone oil emulsion and some other additives, although the release agent has a certain biological Degradability, but the demoulding effect is not obvious, and the cost is high

Method used

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  • A biodegradable polyurethane releasing agent and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A biodegradable polyurethane release agent, in parts by weight, comprises the following components:

[0033] 10 parts of natural wax liquid, 20 parts of amino silicone oil emulsion,

[0034] 5 parts of polydimethylsiloxane emulsion,

[0035] 1 part of silica airgel, 2 parts of other additives,

[0036] 20 parts of deionized water.

[0037] Its preparation method comprises the following steps:

[0038] A preparation method of biodegradable polyurethane release agent, comprising the following steps:

[0039] (1) 10 parts of natural wax liquid, 5 parts of polydimethylsiloxane emulsion, 20 parts of amino silicone oil emulsion and deionized water were mixed and stirred evenly, and ultrasonicated for 2 hours at a power of 500W to obtain a mixed emulsion;

[0040] (2) Transfer the mixed emulsion obtained in step (1) to an autoclave, add 1 part of silica airgel and 2 parts of other additives, seal, heat up to 40°C, and ultrasonicate in a water bath for 40 minutes to obtain ...

Embodiment 2

[0042] A biodegradable polyurethane release agent, in parts by weight, comprises the following components:

[0043] 20 parts of natural wax liquid, 30 parts of amino silicone oil emulsion,

[0044] 10 parts of polydimethylsiloxane emulsion,

[0045] 8 parts of silica airgel, 5 parts of other additives,

[0046] 30 parts of deionized water.

[0047] Its preparation method comprises the following steps:

[0048] A preparation method of biodegradable polyurethane release agent, comprising the following steps:

[0049] (1) 20 parts of natural wax liquid, 10 parts of polydimethylsiloxane emulsion, 30 parts of amino silicone oil emulsion and deionized water were mixed and stirred evenly, and ultrasonicated for 5 hours at a power of 800W to obtain a mixed emulsion;

[0050] (2) Transfer the mixed emulsion obtained in step (1) to an autoclave, add 8 parts of silica airgel and 5 parts of other additives, seal it, raise the temperature to 60°C, and ultrasonicate in a water bath for ...

Embodiment 3

[0052] A biodegradable polyurethane release agent, in parts by weight, comprises the following components:

[0053] 12 parts of natural wax liquid, 22 parts of amino silicone oil emulsion,

[0054] 6 parts of polydimethylsiloxane emulsion,

[0055] 2 parts of silica airgel, 3 parts of other additives,

[0056] 22 parts of deionized water.

[0057] Its preparation method comprises the following steps:

[0058] A preparation method of biodegradable polyurethane release agent, comprising the following steps:

[0059] (1) 12 parts of natural wax liquid, 6 parts of polydimethylsiloxane emulsion, 22 parts of amino silicone oil emulsion and deionized water were mixed and stirred evenly, and ultrasonicated at a power of 550W for 2.5 hours to obtain a mixed emulsion;

[0060] (2) Transfer the mixed emulsion obtained in step (1) to an autoclave, add 2 parts of silica airgel and 3 parts of other additives, seal it, heat up to 45°C, and ultrasonicate in a water bath for 45 minutes to ...

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Abstract

A biodegradable polyurethane releasing agent is disclosed. The releasing agent comprises following components by weight: 10-20 parts of natural liquid wax, 20-30 parts of amino silicone oil emulsion, 5-10 parts of polydimethylsiloxane emulsion, 1-8 parts of silica aerogel, 2-5 parts of other auxiliary agents and 20-30 parts of deionized water. A preparing method of the releasing agent is also disclosed. The releasing agent is good in biodegradability, safe, nontoxic, good in releasing effects, and free of influence on product quality and molds after releasing. The preparing method is simple and low in cost.

Description

Technical field: [0001] The invention relates to the field of high-resolution auxiliary agents, in particular to a biodegradable polyurethane release agent. Background technique: [0002] The release agent is a functional substance between the mold and the finished product. Mold release agents are chemically resistant and do not dissolve when in contact with the chemical composition of different resins (especially styrene and amines). The release agent also has heat and stress resistance, and is not easy to decompose or wear; the release agent adheres to the mold and does not transfer to the workpiece to be processed, and does not hinder painting or other secondary processing operations. Due to the rapid development of injection molding, extrusion, calendering, molding, lamination and other processes, the amount of release agent has also increased significantly. [0003] The release agent is classified by usage: internal release agent, external release agent; by service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/62
Inventor 黄超
Owner SUZHOU JINGRO TECH
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