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Wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating

A technology of composite heating and microwave heater, applied in the field of rubber foaming, can solve the problems of high energy consumption, unenvironmental protection, low qualified rate of finished products, etc., and achieve the effects of good temperature uniformity, energy saving, and uniform cell size

Inactive Publication Date: 2020-02-07
JIHUA 3517 RUBBER PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant investigations and studies, the original foaming technology basically adopts the method of heating air to form hot air circulation to heat and foam the thin rubber sheet from the outside to the inside. The basic heating sources usually use electric heating, infrared rays, heat transfer oil, and natural gas. These methods have high energy consumption, are not environmentally friendly, and have a low qualified rate of finished products.

Method used

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  • Wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating
  • Wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating
  • Wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Follow the steps below:

[0030] Step A, mixing the rubber, foaming agent, and vulcanizing agent evenly, and extruding them through a calender to obtain an unvulcanized and foamed wide-width thin rubber sheet;

[0031] Step B. Use a steam coil radiator to heat the air in the foaming furnace at a heating temperature of 130°C. The steam boiler provides the steam source for the steam coil radiator. At the same time, a hot air circulation system is used, that is, through the high temperature resistant fan and the foaming furnace The pipeline is connected to form a loop to circulate the air in the foaming furnace. After heating for a period of time, the temperature in the foaming furnace is evenly distributed and basically stable;

[0032] The length obtained in step C and step A is 500mm, the width is 300mm, the thickness is 1.3mm, and the density is 1.1-1.4g / cm 3 , the wide-width thin rubber sheet with a moisture content of <2% is fed into the foaming furnace through the ...

Embodiment 2

[0036] Follow the steps below:

[0037] Step A, mixing the rubber, foaming agent, and vulcanizing agent evenly, and extruding them through a calender to obtain an unvulcanized and foamed wide-width thin rubber sheet;

[0038] Step B. Use the steam coil radiator to heat the air in the foaming furnace at a heating temperature of 146°C. The steam boiler provides the steam source for the steam coil radiator. At the same time, a hot air circulation system is used, that is, through the high temperature resistant fan and the foaming furnace The pipeline is connected to form a loop to circulate the air in the foaming furnace. After heating for a period of time, the temperature in the foaming furnace is evenly distributed and basically stable;

[0039] The length obtained in step C and step A is 500mm, the width is 300mm, the thickness is 1.5mm, and the density is 1.1-1.4g / cm 3 , the wide-width thin rubber sheet with a moisture content of <2% is sent into the foaming furnace through t...

Embodiment 3

[0043] Follow the steps below:

[0044] Step A, mixing the rubber, foaming agent, and vulcanizing agent evenly, and extruding them through a calender to obtain an unvulcanized and foamed wide-width thin rubber sheet;

[0045] Step B. Use the steam coil radiator to heat the air in the foaming furnace at a heating temperature of 150°C. The steam boiler provides the steam source for the steam coil radiator. At the same time, a hot air circulation system is used, that is, through the high temperature resistant fan and the foaming furnace The pipeline is connected to form a loop to circulate the air in the foaming furnace. After heating for a period of time, the temperature in the foaming furnace is evenly distributed and basically stable;

[0046] The length obtained in step C and step A is 500mm, the width is 300mm, the thickness is 1.8mm, and the density is 1.1-1.4g / cm 3, the wide-width thin rubber sheet with a moisture content of <2% is sent into the foaming furnace through th...

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Abstract

The invention discloses a wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating. The technology comprises the following steps that step A, rubber, a foaming agent and a vulcanizing agent are mixed, and pressing is performed through a calender to form a wide-width thin rubber sheet; step B, air in a foaming furnace is heated through a steam radiator, so that the temperatures in the furnace are evenly distributed; step C, the wide-width thin rubber sheet is conveyed into the foaming furnace for heating, an infrared heating pipe of a feedingsegment is heated, so that the surface layer is quickly cured and formed, and under the combined effect of energy feedback microwaves radiated by a leaky antenna on a microwave heater wave guide pipeand air hot in the foaming furnace, the thin rubber sheet is evenly heated, vulcanized and foamed from inside to outside; step D, after foaming is completed, discharging is conducted. The invention aims at providing the wide-width thin rubber sheet foaming technology based on infrared ray, steam and microwave composite heating. According to the foaming technology, the wide-width thin rubber sheetis heated and foamed from inside to outside, the labor efficiency is improved, energy is saved, and the product qualification rate is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rubber foaming, in particular to a wide-width thin rubber sheet foaming process based on infrared, steam and microwave composite heating. Background technique [0002] Foamed materials are relatively ubiquitous dense materials, and their most general common characteristics are low density, light weight, large specific area, high specific mechanical properties, and good damping properties. Due to its excellent physical and mechanical properties and high cost performance, foamed materials have become an excellent engineering material with dual properties of function and structure. It is a class of functional structural materials that are widely used and have great application potential. The application of this kind of material involves industries such as aviation, aerospace, atomic energy, medicine, environmental protection, metallurgy, mechanical construction, electrochemistry and petrochemical industry, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/34B29C35/04B29C35/08C08J9/04C08L21/00
CPCB29C44/3415B29C35/049B29C35/045B29C35/08C08J9/04B29C2035/046B29C2035/0855B29C2035/0822C08J2321/00Y02P20/10
Inventor 李辉江曾轶唐玉华
Owner JIHUA 3517 RUBBER PROD
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