Microwave foaming device for melamine resin

A technology of microwave foaming and melamine resin, which is applied in the directions of removing smoke and dust, cleaning methods and utensils, chemical instruments and methods, etc. High tear strength, not easy to drop powder, low brittleness

Inactive Publication Date: 2017-01-04
郑州峰泰纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a microwave foaming device for melamine resin, which solves the problems of uneven foaming, high brittleness, easy powder drop and low tensile strength of the melamine resin foam produced by the existing production device

Method used

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  • Microwave foaming device for melamine resin

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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, this embodiment provides a microwave foaming device for melamine resin, which includes a microwave cavity 1 and a drying and curing cavity 2 in sequence according to the material conveying direction, and a pre-foaming microwave cavity 3 is arranged in front of the microwave cavity 1 , two rows of small microwave sources 4 are respectively arranged on the top wall and the bottom wall of the pre-firing microwave cavity, and each row has five small microwave sources 4, and the power of each small microwave source 4 is 1kW. A microwave source 5 with a power of 20kW is arranged on the wall. The production device pre-foams the cavity before the microwave cavity 1, and then foams, which effectively avoids the problem of uneven foam density caused by the uneven radiation of the melamine resin during the foaming process. Moreover, a plurality of microwave sources are evenly arranged in the pre-foaming microwave cavity 3, which can make the microwave r...

Embodiment 2

[0026] Such as figure 1 As mentioned above, this embodiment provides a microwave foaming device for melamine resin. In this embodiment, the microwave frequency of the pre-foaming microwave cavity 3 is 915 MHz, which is the same as the microwave frequency of the microwave source in the microwave generating cavity. Therefore, The device does not require a microwave backstop.

[0027] Other structures of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a microwave foaming device for melamine resin and belongs to the technical field of microwave foaming. The microwave foaming device sequentially comprises a microwave cavity and a drying and cooking cavity in the material conveying direction, wherein a pre-foaming microwave cavity is formed in the front of the microwave cavity, two rows of small microwave sources are arranged on each of the top wall and the bottom wall of the pre-foaming microwave cavity, each row comprises five small microwave sources, the power of each small microwave source is 1 kW, and a microwave source with the power being 20 kW is arranged on the top wall of the microwave cavity. The pre-foaming microwave cavity is formed in the front of the microwave cavity of the production device, pre-foaming is performed before foaming, and the problem of foam density unevenness caused by uneven radiation in the resin foaming process is effectively solved.

Description

technical field [0001] The invention relates to the technical field of microwave foaming, in particular to a microwave foaming device for melamine resin. Background technique [0002] Melamine resin, also known as melamine-formaldehyde resin, is a polymer obtained by the reaction of melamine and formaldehyde. A cross-linking reaction occurs during processing and molding, and the product is an infusible thermosetting resin. It is customary to call it amino resin together with urea-formaldehyde resin. [0003] Melamine resin foam is a kind of flame retardant foam plastic made by special foaming process based on melamine formaldehyde resin. It is light in texture, has excellent flame retardancy, heat insulation, thermal stability, sound absorption and noise reduction, safety and sanitation and good secondary processability, and can be widely used in construction, machinery, chemical industry, transportation and other fields. The curing of melamine formaldehyde resin is throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/34B08B15/04C08G12/32
CPCB29C44/3415B08B15/04B29C44/34C08G12/32
Inventor 李洋洋
Owner 郑州峰泰纳米材料有限公司
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