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High-molecular material foaming device and application method thereof

A polymer material and foaming device technology, which is applied in the field of polymer material foaming, can solve the problems of limiting radio frequency heating, etc., and achieve the effects of rapid and efficient foaming, good working conditions and broad application prospects.

Pending Publication Date: 2018-08-07
QUANZHOU NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, polymer foaming has special requirements for foaming molds. It must be a material that can penetrate microwaves before it can be used to make foaming molds. For example, metal materials cannot be used as foaming molds, which is extremely The application of radio frequency heating is limited, because in the foaming process of many polymer foamed products, the foaming mold is required to have sufficient pressure resistance, temperature resistance and other properties

Method used

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  • High-molecular material foaming device and application method thereof

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Embodiment 1

[0024] A foaming device for polymer materials, suitable for foaming PU, TPU, EVA, PE, PP, PU, ​​SEBS and other elastomer materials or blended materials. Even for non-polar or low-polar polymer materials that do not absorb radio frequency, they can also be used as radio frequency absorbers by blending highly polar materials, such as -OH, -NH in the molecular structure 2 , -COOH and other highly polar functional groups, or macromolecules that can form intramolecular or intermolecular hydrogen bonds in the molecular structure; and non-macromolecular chemical substances such as water molecules, alcohols, glycerin, graphite, salt, etc. Both can be used as radio frequency absorbers to realize radio frequency heating of polymer materials. Such as figure 1 As shown, including foaming mold and high frequency power supply 6. The high-frequency power supply 6 is a known technology. The above-mentioned foaming mold includes an upper mold 1 and a lower mold 2 , an insulating spacer is a...

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Abstract

The invention discloses a high-molecular material foaming device. The high-molecular material foaming device mainly comprises a foaming mold and a high-frequency electric source, wherein the foaming mold comprises an upper mold and a lower mold, insulated spacers are arranged between the upper mold and the lower mold at intervals, after the high-frequency electric source is powered on, a high-frequency oscillation electric field is generated between the upper mold and the lower mold, in the high-frequency oscillation electric field, polar molecules and / or functional groups inside a to-be-foamed base metal can incessantly switch directions along with the high-frequency oscillation electric field to collide with each other, mutual friction generates heat so as to enable the temperature of the to-be-foamed base metal in a mold chamber to rise, a foaming agent can be heated and decomposed to generate gas, the foaming material expands to fill the whole mold chamber so as to realize foamingof the foaming material. By adopting the foaming device, the rapid, efficient and uniform foaming of a high-molecular material can be realized. The high-molecular material foaming device has a broad application prospect in the material foaming field.

Description

technical field [0001] The invention relates to the technical field of polymer material foaming, in particular to a polymer material foaming device and a method for using the same. Background technique [0002] At present, polymer foam materials are widely used in heat insulation, sound insulation, shock absorption, shoemaking and other fields. At present, the commonly used foaming methods of polymer materials include physical foaming and chemical foaming. The chemical foaming method means that after blending the chemical foaming agent with the polymer material, at a certain temperature, the chemical foaming agent is decomposed by heat, generates gas, expands, and foams the polymer material. At present, the heating method is mainly electric heating. method, because the electric heating process heats the polymer material through heat conduction, that is, the foaming mold is first heated by the electric heating plate, and the foaming mold transfers the heat to the foaming mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/58B29C44/34B29K23/00B29K75/00B29K96/04
CPCB29C44/02B29C44/3415B29C44/58B29K2023/12B29K2023/083B29K2023/06B29K2096/04B29K2075/00B29K2075/02
Inventor 朱君秋吴清实罗水源
Owner QUANZHOU NORMAL UNIV
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