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Alkaline phenolic resin organic ester curing agent suitable for winter

A phenolic resin, organic ester technology, applied in casting molding equipment, molds, cores, etc., can solve problems such as difficult to use, and achieve the effect of high mechanical performance

Active Publication Date: 2011-10-19
LIAONING FU-AN HEAVY INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the current use of organic ester curing agents, it is difficult to use when the temperature is less than 5°C
Restricting the production and use of organic ester hardening alkaline phenolic resin no-bake sand process in northern winter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A basic phenolic resin organic ester curing agent suitable for winter, which is composed of the following components in the stated weight ratio: 600 parts of gamma-butyrolactone, 60 parts of carbonate compound dimethyl carbonate, acetate compound 200 parts of methyl ester, 10 parts of stannous chloride as a curing catalyst. The preparation method is to mix the above ingredients uniformly at room temperature.

Embodiment 2

[0014] A basic phenolic resin organic ester curing agent suitable for winter, which is composed of the following components according to the stated weight ratio: 650 parts of gamma-butyrolactone, 100 parts of carbonate compound diethyl carbonate, acetate compound 300 parts of ethyl or butyl ester, 15 parts of stannous chloride as curing catalyst. The preparation method is to mix the above ingredients uniformly at room temperature.

Embodiment 3

[0016] A basic phenolic resin organic ester curing agent suitable for winter, which consists of the following components in the stated weight ratio: 700 parts of gamma-butyrolactone, 50 parts of diphenyl carbonate carbonate compound, 50 parts of acetate compound 250 parts of ethylene glycol ester, 20 parts of stannous chloride as a curing catalyst. The preparation method is to mix the above ingredients uniformly at room temperature.

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PUM

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Abstract

The invention relates to an alkaline phenolic resin organic ester curing agent suitable for winter, which is characterized by comprising the following components in portions by weight: 600-700 portions of gamma-butyrolactone, 50-100 portions of carbonic ester compounds, 200-300 portions of acetic ester compounds and 10-20 portions of curing catalyst. The organic ester curing agent has the advantages of high curing strength and good mechanical properties, and can be used at lower temperature in winter, thereby effectively solving the problem that northern foundry enterprises use ohenolic resinfor production in winter.

Description

technical field [0001] The invention relates to an organic ester curing agent, in particular to an alkaline phenolic resin organic ester curing agent suitable for winter. Background technique [0002] Organic ester hardened alkaline phenolic resin no-bake sand is an advanced molding process, which mixes raw sand, alkaline phenolic resin and organic ester curing agent evenly before molding. Since it does not contain N, S, P and other elements, it has The casting quality is good and the environmental pollution is small. Due to the current use of organic ester curing agents, it is difficult to use when the temperature is less than 5°C. It limits the production and use of organic ester hardening alkaline phenolic resin no-bake sand process in northern winter. Contents of the invention [0003] The purpose of the present invention is to provide a kind of alkaline phenolic resin organic ester curing agent suitable for use under the condition of relatively cold temperature, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/22
Inventor 张洪生
Owner LIAONING FU-AN HEAVY INDUSTRY CO LTD
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