A method for efficiently heating polymers using microwaves

A polymer and microwave heating technology, applied in the field of polymer materials, can solve problems such as unoptimized and efficient implementation methods, and achieve the effects of increasing convenience, improving product quality, and reducing energy consumption

Active Publication Date: 2020-04-14
BAMSTONE NEW MATERIAL TECH (WUHAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the patent mainly proposes a concept of microwave heating of thermoplastic materials, and an efficient implementation method has not been optimized.

Method used

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  • A method for efficiently heating polymers using microwaves
  • A method for efficiently heating polymers using microwaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In 100 parts of polyethylene powder, add 2 parts of tetrapod zinc oxide whiskers and mix well. Put the above powder into a flat vulcanizer, heat and pressurize to make a microwave-heatable polyethylene board, wherein the volume addition of zinc oxide whiskers is 0.35%, and cool to room temperature for later use.

[0019] The above-mentioned microwave-heatable polyethylene plate was put into a microwave oven at a room temperature of 25° C., and was taken out after heating for 2 minutes. It was found that the polyethylene plate had melted.

Embodiment 2

[0021] Add 1 part of needle-shaped zinc oxide whiskers to 100 parts of polyethylene powder, and mix well. Put the above powder into a flat vulcanizer, heat and pressurize to make a microwave-heatable polyethylene board, wherein the volume addition of zinc oxide whiskers is 0.18%, and cool to room temperature for later use.

[0022] Put the above-mentioned microwave-heatable polyethylene plate into a microwave oven at room temperature of 25°C, take it out after heating for 2 minutes, and test its surface temperature to be 83°C.

[0023] After continuing to heat in the microwave oven for 2 minutes, it was taken out, and it was found that the polyethylene plate had melted.

Embodiment 3

[0025] Add 1 part of chrysanthemum-like zinc oxide whiskers to 100 parts of 40% solid content phenoxy resin methyl ethyl ketone solution, mix well, then paint on a piece of glass fiber grid cloth, and let it dry naturally to make glass fiber Reinforced phenolic resin board with 0.37% volume addition of zinc oxide whiskers.

[0026] Put the above-mentioned glass fiber reinforced phenolic resin plate into the microwave oven at room temperature of 25°C, take it out after heating for 2 minutes, it was found to be softened, and its surface temperature was measured to be 173°C.

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Abstract

The invention discloses a method for efficiently heating a macromolecular polymer by microwave. The method comprises adding a small amount of a dielectric loss ceramic material with high microwave absorbing efficiency into a macromolecular polymer or its monomer or its oligomer so that the traditional low dielectric loss microwave transparent macromolecular polymer unable to heat with microwave and its monomer and oligomer can be rapidly heated under the action of microwave. The method realizes fast, controllable and uniform heating of the macromolecular polymer and its monomer and oligomer, improves production efficiency, improves product quality, reduces energy consumption and increases the automatic control easiness. The used microwave-sensitive additive is a ceramic material with high microwave absorbing properties and satisfies fast heating requirements under the condition of a small use ratio of 0.1-5% based on the macromolecular polymer volume. The method produces small influence on polymer performances and has a wide application range.

Description

technical field [0001] The invention relates to a microwave heating method for polymers, belonging to the field of polymer materials. Background technique [0002] The general traditional method of heating polymers is to heat the surrounding environment, heat the surface of the material first by heat radiation, conduction or convection of hot air, and then conduct it into the interior of the material. This method has low efficiency, long heating time, uneven heating and large thermal stress. The biggest feature of microwave heating is that microwaves are generated inside the object to be heated, and the heat source comes from the inside of the object. "Simultaneous heating" greatly shortens the heating time, and the heating efficiency is high, which is conducive to improving product output. The inertia of microwave heating is very small, which can realize the rapid control of temperature rise and fall, which is beneficial to continuous production and automatic control. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L71/10C08L63/00C08L25/06C08K7/08C08J3/28
CPCC08J3/28C08J2323/06C08J2325/06C08J2363/00C08J2371/00C08K7/08C08L23/06C08L71/00C08L63/00C08L25/06
Inventor 刘伟王钧王浩杨小利
Owner BAMSTONE NEW MATERIAL TECH (WUHAN) CO LTD
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