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Manufacturing process of foamed silica gel product

A technology of foamed silica gel and manufacturing process, which is applied in the field of manufacturing process of foamed silica gel products. It can solve the problems of work hardening, loss of internal gas, and uneven foaming of foamed silica gel products, so as to achieve good foam molding and uniform increase. degree of effect

Inactive Publication Date: 2020-06-19
合肥艺光高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the manufacturing process of existing foamed silica gel products, because the foaming needs to be uniform, they are all mixed and produced by a relatively complicated process. After mixing, not only the internal gas is lost, but also the so-called work hardening phenomenon occurs, that is, the internal The tissue is in a state of tension, which causes the problem of uneven foaming inside the foamed silicone product after it is manufactured. For this reason, we propose a manufacturing process for the foamed silicone product

Method used

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  • Manufacturing process of foamed silica gel product
  • Manufacturing process of foamed silica gel product

Examples

Experimental program
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Effect test

Embodiment 1

[0024] see figure 1 , the present invention provides a technical solution: a manufacturing process for foamed silica gel products, characterized in that it comprises the following steps:

[0025] A), mix the raw materials for the preparation of foamed silica gel with a stirring device, and then mix the foaming agent with the prepared raw materials after mixing, stirring at a low speed for 8 minutes and stirring at a high speed for 2 minutes, and when stirring at a low speed, the speed of the stirring device is 2000 rpm, the temperature of low-speed stirring is 25 degrees, when high-speed stirring, the speed of the mixing equipment is 5000 rpm, the temperature of low-speed stirring is 30 degrees, the high and low speed scheme is used for raw material mixing, which is convenient to increase the uniformity of raw material mixing ;

[0026] B) Place the prepared raw materials that have been mixed above in a holding container, and let them stand for 10 minutes, keep the temperatur...

Embodiment 2

[0037] The other steps and conditions of this embodiment are consistent with those of Embodiment 1, and the standing time in step B is 15 minutes.

[0038] The foamed silica gel products obtained in Examples 1 and 2 are Product A and Product B respectively. The densities of Product A and Product B are shown in the table below. From the table data, it can be known that the density of the foamed silica gel products is relatively small compared to the standing time. The length is related, and the second implementation with a longer resting time will result in a higher density of product B, so the interval of the resting time can be selected according to the cost.

[0039]

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Abstract

The invention discloses a manufacturing process of a foamed silica gel product. The process comprises the following steps: mixing preparation raw materials of foamed silica gel through stirring equipment, then mixing a foaming agent with the mixed preparation raw materials, wherein stirring is carried out at a low speed for 6-8 minutes, and stirring is carried out at a high speed for 2-4 minutes;placing the mixed preparation raw materials in a containing container, keeping standing for 10-15 minutes, and maintaining the temperature between 25-30 DEG C; then injecting the standing preparationraw materials into a forming die; and foaming and molding the forming die filled with the mixed preparation raw materials to obtain a foamed silica gel product. A high-speed and low-speed scheme is adopted for mixing the raw materials, so that the mixing uniformity of the raw materials is increased conveniently, and the raw materials are pretreated in a standing mode, so that the raw materials which have the work hardening phenomenon can be loosened, the shaping operation is facilitated, the raw materials of gas can be recovered in the standing process through the process, and later better foaming forming is facilitated.

Description

technical field [0001] The invention belongs to the technical field of foamed silica gel products, and in particular relates to a manufacturing process of foamed silica gel products. Background technique [0002] Foamed silica gel is also called addition type silica gel. It is composed of silica gel and curing agent at a ratio of 1:1. It becomes a soft elastic material after white vulcanization. It is an environmentally friendly material, and the products produced are non-toxic, tasteless, safe and hygienic. Foamed silica gel is a two-component heating vulcanized silicone rubber, which is a white or skin-colored oily liquid. After vulcanization, it becomes a soft elastic material, and the foaming volume is 3-4 times the original size. It can produce rubber products such as human body, insoles, shoulder pads, patches, and non-slip pads, and flexible silicone rubber products such as human bodies, insoles, shoulder pads, patches, and non-slip pads. Tear strength: 55Kn / m; Duct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/34B29K83/00
CPCB29C44/02B29C44/3442B29K2083/00
Inventor 胡国胜
Owner 合肥艺光高分子材料科技有限公司