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A kind of foaming product that uses air to replace foaming agent and preparation method thereof

An air foaming and foaming agent technology, applied in the field of materials, can solve the problems of large amount of foaming agent and environmental pollution, and achieve the effects of better performance, better mechanical properties and safe use.

Active Publication Date: 2019-07-16
武汉托素新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And some foaming agents (sodium bicarbonate) will produce a large amount of carbon dioxide after decomposition, and the foaming agent itself has the problem of environmental pollution in the process of production

Method used

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  • A kind of foaming product that uses air to replace foaming agent and preparation method thereof
  • A kind of foaming product that uses air to replace foaming agent and preparation method thereof

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preparation example Construction

[0013] The preparation method of the foamed product that replaces the foaming agent with air provided in the embodiment of the present invention includes the following steps: put the material to be foamed into the air foaming mold, and pour it into the air foaming mold under the condition of 135-145°C The air is fed into the air foaming mold so that the pressure is 11.5-13 MPa, foaming, pressure relief and mold opening to obtain a foamed product.

[0014] Preferably, under the condition of 140° C., air is introduced into the air foaming mold to a pressure of 12 MPa in the air foaming mold. On the one hand, the above temperature and pressure matching conditions are beneficial to improve the foaming performance, increase the number of small-diameter cells, and balance the thickness ratio between the surface layer and the inside of the foamed product, thereby obtaining better mechanical properties; on the other hand, it can reduce burrs and stress and prolong die life.

[0015] ...

Embodiment 1

[0036] The raw materials are mixed, kneaded in an internal mixer at a temperature of 80°C, and then tableted or granulated to obtain the raw material. Vulcanize or cross-link the initial material at 150°C, the vulcanization or cross-linking time is based on the thickness of the material to be foamed, and the time for vulcanization or cross-linking of each 10mm thick material to be foamed is 10 minutes. Then cool it down to room temperature for 20 hours to obtain the material to be foamed.

[0037] Wherein, the raw material contains the EVA of 90 parts by weight, the calcium carbonate of 20 parts by weight and the BIPB crosslinking agent of 0.8 parts by weight.

[0038] Put the material to be foamed into the air foaming mold, and pass air into the air foaming mold under the condition of 135° C. until the pressure in the air foaming mold is 11.5 MPa, and then foam. The foaming time is calculated according to the thickness of the foamed product required, and the foaming time for...

Embodiment 2

[0040] The raw materials are mixed, kneaded in an internal mixer at a temperature of 100°C, and then tableted or granulated to obtain the raw material. Vulcanize or cross-link the initial material at 170°C, the vulcanization or cross-linking time is based on the thickness of the material to be foamed, and the time for vulcanization or cross-linking of each 10mm thick material to be foamed is 15 minutes. Then cool it down to room temperature for 26 hours to obtain the material to be foamed.

[0041] Wherein, the raw material contains the EVA of 110 parts by weight, the calcium carbonate of 40 parts by weight and the BIPB crosslinking agent of 1.2 parts by weight.

[0042] Put the material to be foamed into the air foaming mold, and pass air into the air foaming mold under the condition of 145° C. until the pressure in the air foaming mold is 13 MPa, and then foam. The foaming time is calculated according to the thickness of the required foaming product, and the foaming time fo...

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Abstract

The invention relates to a foaming product adopting air to replace a foaming agent and a preparation method of the foaming product, and belongs to the field of materials. The preparation method comprises steps as follows: a to-be-foamed material is placed in an air foaming mould, air is introduced into the air foaming mould at 135-145 DEG C until intensity of pressure in the air foaming mould is 11.5-13 MPa, foaming, pressure reliving and mould opening are performed, and the foaming product is obtained. The preparation method is simple, the process is easy to control, the foaming agent is notrequired, air is directly used for replacing the foaming agent, and the foaming product is safe and environmentally friendly. The foaming product prepared with the method is non-toxic and odorless, safe to use and better in performance.

Description

technical field [0001] The invention relates to the field of materials, and in particular to a foamed product in which air is used to replace a foaming agent and a preparation method thereof. Background technique [0002] At present, almost all rubber and plastic products foamed with foaming agents have problems of unpleasant smell or excessive formamide to varying degrees. And some blowing agent (sodium bicarbonate) can produce a large amount of carbon dioxide after decomposition, and blowing agent itself has the problem of environmental pollution in the process of production. Contents of the invention [0003] One of the objects of the present invention is to provide a method for preparing a foamed product in which air is used instead of foaming agent. The preparation method is simple, the process is easy to control, no foaming agent is used, and air is directly used instead of foaming agent, which is safe and environmentally friendly. [0004] The second object of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/30C08L23/08C08L23/06C08L7/00C08L9/06C08L23/16C08K13/02C08K3/26C08K3/22C08K5/09
CPCC08J9/0023C08J9/0066C08J9/0095C08J9/30C08J2307/00C08J2323/06C08J2323/08C08J2409/06C08J2423/06C08J2423/08C08J2423/16
Inventor 吴汉平吴迪
Owner 武汉托素新材料科技有限公司
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