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Plastic product isolation releasing agent and preparing method thereof

A technology for plastic products and release agents, which is applied in the field of isolation and release agents for plastic products and its preparation, in-situ preparation of nano-calcium carbonate modified silicone oil emulsions and its preparation, and can solve problems such as easy agglomeration and poor dispersion. Achieve the effects of reducing the number of brushing, protecting the surface of the mold, repairing micro pits and damage

Active Publication Date: 2019-03-12
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, because the surface of calcium carbonate contains calcium ions, hydroxyl groups, etc., showing the characteristics of surface hydrophilic and oleophobic, it is easy to agglomerate in the polymer material system and cannot be well dispersed. Surface modification is required to improve its interaction with organic materials and polymer materials. compatibility

Method used

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  • Plastic product isolation releasing agent and preparing method thereof
  • Plastic product isolation releasing agent and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 50 parts of silicone oil with an average viscosity of 1000cp, 2.5 parts of cetyl trimethylammonium bromide (1631-Br) and 2.5 parts of dodecyl dimethyl betaine (BS-12) as emulsifier, and measure 10 parts of deionized water, weigh 0.8 part of stearic acid, 0.2 part of ethanol, and 0.2 part of anhydrous calcium chloride to prepare a calcium chloride aqueous solution with a concentration of 1.0M with deionized water, and add it to a reaction vessel with a stirring reflux device , Stir at 50°C to form a transparent solution. According to the molar ratio of calcium ions to carbonate ions of 1:1, slowly add anhydrous sodium carbonate powder into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding. After the addition is complete, the temperature of the system is raised to 50 -60°C, stirred and refluxed for 36 hours, added deionized water, stopped heating, stirred slowly, lowered the temperature and reversed the phase, and obtain...

Embodiment 2

[0024] Weigh 30 parts of silicone oil with an average viscosity of 1000cp, 15 parts of silicone oil with an average viscosity of 500cp, 11 parts of hexadecyltrimethylammonium bromide (1631-Br) as an emulsifier, and 10 parts of deionized water. 1 part of propylene glycol, 3 parts of ethanol, 1.5 parts of oleic acid, and 1.5 parts of anhydrous calcium chloride were prepared with deionized water to make a calcium chloride aqueous solution with a concentration of 1.5M, and added to a reaction vessel with a stirring reflux device, at 50 ° C Stir to form a clear solution. According to the molar ratio of calcium ion to carbonate ion is 1:1, slowly add anhydrous sodium carbonate powder or 2.5M aqueous sodium carbonate solution into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding After the addition is complete, the temperature of the system is raised to 60-65 ° C, stirred and refluxed for 24 hours, added deionized water, stopped heating, ...

Embodiment 3

[0026] Weigh 50 parts of silicone oil with an average viscosity of 500cp, 12.5 parts of hexadecyl trimethylammonium bromide (1631-Br) and 7.5 parts of dodecyl dimethyl betaine (BS-12) as emulsifier, and measure 15 parts of deionized water, weighed 5 parts of ethanol, 2 parts of oleic acid, 3 parts of sodium oleate, and 3 parts of anhydrous calcium chloride were prepared with deionized water to prepare a calcium chloride aqueous solution with a concentration of 2.5M. In the reaction vessel of the device, stir at 50°C to form a transparent solution. According to the molar ratio of calcium ion to carbonate ion is 1:1, slowly add anhydrous sodium carbonate powder or 2.5M aqueous sodium carbonate solution into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding After the addition is complete, the temperature of the system is raised to 65-75°C, stirred and refluxed for 18 hours, added deionized water, stopped heating, stirred slowly, coole...

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Abstract

The invention discloses a plastic product isolation releasing agent and a preparing method thereof, and belongs to the field of plastic machining auxiliaries. The agent is prepared as follows firstly,silicone oil, an emulsifying agent, water-soluble salt calcium chloride and sodium carbonate serve as raw materials for preparing W / O active nano calcium carbonate silicone oil composite emulsion, water adding for phase inversion is carried out, and the O / W silicone oil nano calcium carbonate emulsion is obtained. In the plastic product machining process, the plastic product isolation releasing agent well achieves isolation of a raw material and a mold, and the mold surface is easy to clean. Due to adding of the nano calcium carbonate, the micro pits and damage on the mold surface can be repaired, the service life of the mold is prolonged, the product surface defects are reduced, and the yield is improved.

Description

technical field [0001] The invention relates to an isolation release agent for plastic products and a preparation method thereof, in particular to an in-situ preparation of nano calcium carbonate modified silicone oil emulsion and a preparation method thereof, belonging to the field of plastic processing aids. Background technique [0002] As an important auxiliary agent in the process of plastic product processing, metal mold release agent can improve product appearance and performance, and improve product quality. Commonly used release agents include waxes, silicone oils, soaps, etc., each of which has its own characteristics; while the commonly used isolation release agents are mainly low-viscosity silicone oils, etc., which have problems in the use process such as large dosage, few demoulding times, and low cost. High fatal flaw; moreover, the mold temperature of commonly used plastic products is 30-120°C, with a wide temperature range, and different mold release agents ...

Claims

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Application Information

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IPC IPC(8): B29C33/64
CPCB29C33/64
Inventor 褚艳红庄玉伟郭辉赵俊杰邢会华曹艳霞张国宝刘清曹键
Owner HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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