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High temperature resistance lubrication mold release agent for glassware molding

A glassware and high temperature resistant technology, applied in the field of high temperature resistant release agent compositions, can solve the problems of poor adhesion, poor lubricity of metal molds, and many times of brushing, and achieve good high temperature resistance and excellent adhesion. Effect

Inactive Publication Date: 2013-05-15
天津市硅酸盐研究所有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there are many disadvantages in the existing release agents: 1. Poor adhesion to the metal mold, easy to be taken away by the glass liquid; 2. Corrosive to the metal mold; 3.
The number of times of brushing is large, and the consumption is large 4
Poor lubricity to metal molds

Method used

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  • High temperature resistance lubrication mold release agent for glassware molding
  • High temperature resistance lubrication mold release agent for glassware molding

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example

[0020] Example: Release agent composition for glassware molding

[0021] The first choice is to prepare the base oil of the release agent for glassware molding of the present invention. In a blending kettle with a stirrer, add 45wt% refined castor oil and 55wt% refined mineral oil, and add 3wt% viscosity index improver polyisoprene ethylene copolymer, stirred at 60-70°C for 1-2 hours to obtain the base oil of the present invention, and then blend the composition according to the following formula.

[0022]

[0023]

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Abstract

The invention relates to a high temperature resistance mold release agent composition for glassware molding. The composition comprises: (a) a refined plant lubrication oil or a refined mineral lubrication oil, (b) at least a viscosity index improver selected from a styrene-isoprene copolymer or a polyisoprene copolymer, (c) at least a thickener selected from zinc stearate, sodium stearate or magnesium stearate, (d) at least an anti-wear agent selected from molybdenum disulfide or silica, and (e) at least an inorganic lubricant selected from graphite, boron nitride or talc powder. The composition has multiple effects of excellent oxidation stability, excellent lubricity, high temperature resistance and the like, and can meet requirements of high temperature resistance mold release agents for molding of glassware with different viscosity grades.

Description

technical field [0001] The invention relates to a high-temperature-resistant release agent composition, more precisely a high-temperature-resistant release agent composition for glassware molding. technical background [0002] In the process of producing glass products, it is necessary to use metal molds to cool and solidify high-temperature liquid glass into glass products in a very short period of time. The working temperature on the surface of the metal mold is generally 600-900°C. Under such temperature conditions, the glass liquid is easy to adhere to the surface of the metal mold, resulting in difficulty in blanking and the appearance of micro-cracks on the surface of the glass product, which affects the surface finish of the glass product. In order to ensure that the surface of glass products has both dense and uniform internal quality and clean and beautiful appearance quality, it is necessary to periodically brush the release agent on the surface of the inner cavity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B40/02
Inventor 王长虹金钰樊小伟
Owner 天津市硅酸盐研究所有限公司
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