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Die warming plate and preparation method thereof

A technology for insulation boards and molds, which is applied to the field of molded mold insulation boards and their preparation, can solve the problems of poor pressure resistance, cracking, frequent replacement, etc., and achieves the effects of good heat resistance, long service life and high degree of automation.

Inactive Publication Date: 2012-10-17
GUANGXI NANNING CHUANGZHIHUI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum silicate board and graphite board have good heat insulation performance, but poor pressure resistance performance, easy to be impacted and cracked during the molding process, frequent replacement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A mold insulation board comprises the following raw materials: glass fiber cloth, polyimide resin, absolute ethanol, and hexamethylenetetramine.

[0010] A preparation method of the mold insulation board, the process steps are as follows:

[0011] (1) Configuration of impregnating solution: Add 250g of absolute ethanol, 250g of polyimide resin and 7.5g of hexamethylenetetramine into a glass container for ultrasonic dispersion for 20 minutes, mix well to form an impregnating solution with suitable viscosity, And use it up within 24 hours under constant temperature conditions.

[0012] (2) Impregnation process of glass fiber cloth

[0013] First cut the glass fiber cloth into a square of 30cm×30cm, soak it in the impregnating solution for 15 minutes, and then put it into a blast drying oven for drying, the temperature is controlled at 50°C, the drying time is 18 hours, and then cooled to Set aside at room temperature.

[0014] (3) Hot pressing curing process

[0015] ...

Embodiment 2

[0019] A mold insulation board comprises the following raw materials: glass fiber cloth, polyimide resin, absolute ethanol, and hexamethylenetetramine.

[0020] A preparation method of the mold insulation board, the process steps are as follows:

[0021] (1) Configuration of impregnation solution: Add 375g of absolute ethanol, 250g of polyimide resin and 10g of hexamethylenetetramine into a glass container for ultrasonic dispersion for 20 minutes and mix evenly to form an impregnation solution with uniform dispersion viscosity , and use it up within 24 hours under constant temperature conditions.

[0022] (2) Impregnation process of glass fiber cloth

[0023] First, cut the glass fiber cloth into a square of 30cm×30cm, put it into the impregnating solution for 20 minutes, and then put it into the blast drying oven for drying, the temperature is controlled at 70°C, the drying time is 16 hours, and then cooled to Set aside at room temperature.

[0024] (3) Hot pressing curing...

Embodiment 3

[0029] A mold insulation board comprises the following raw materials: glass fiber cloth, polyimide resin, absolute ethanol, and hexamethylenetetramine.

[0030] A preparation method of the mold insulation board, the process steps are as follows:

[0031] (1) Configuration of impregnation solution: Add 500g of absolute ethanol, 250g of polyimide resin and 12.5g of hexamethylenetetramine into a glass container for ultrasonic dispersion for 20 minutes and mix evenly to form a uniformly dispersed impregnation with suitable viscosity solution, and use it up within 24 hours under constant temperature conditions.

[0032] (2) Impregnation process of glass fiber cloth

[0033] First, cut the glass fiber cloth into a square of 30cm×30cm, put it into the impregnating solution for 25 minutes, and then put it into a blast drying oven for drying, the temperature is controlled at 80°C, the drying time is 14 hours, and then cooled to Set aside at room temperature.

[0034] (3) Hot pressin...

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Abstract

The invention relates to a die warming plate and a preparation method thereof in a compression molding process. The die warming plate comprises the components of: 40-80% of a framework which is glass fiber fabric, 10-30% of polyimide resin, 3-6% of a curing agent which is hexamethylenetetramine, and a soaking liquid solvent which is dehydrated alcohol, wherein the ratio of dehydrated alcohol to polyimide resin is 1-2. The preparation method comprises the steps of: composite soaking liquid preparation, glass fiber fabric soaking, thermoforming, and solidification heat treatment. The die warming plate is advantaged in simple technology, low energy consumption, low cost, high strength, good durability, and good reliability.

Description

technical field [0001] The invention relates to a compression-molded mold insulation board and a preparation method thereof. Background technique [0002] Strengthening the insulation measures of the mold can reduce the heat loss of the mold, make the mold reach the predetermined production temperature in a short period of time, reduce energy waste, reduce energy consumption, and save costs. At present, the commonly used mold insulation boards mainly include asbestos boards (asbestos cloth), aluminum silicate boards and graphite boards. Asbestos board (asbestos cloth) has the advantages of low cost, good heat insulation performance and relatively high pressure resistance, but asbestos fiber is a strong carcinogen, its use has been strictly prohibited abroad, and it is being phased out domestically. Aluminum silicate board and graphite board have good thermal insulation performance, but poor pressure resistance performance, they are easily cracked by impact during the moldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K13/04C08K7/14C08K5/3492B29C43/58B29C71/02
Inventor 尹彩流王秀飞蓝奇文国富梁建烈
Owner GUANGXI NANNING CHUANGZHIHUI MATERIAL TECH
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