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A kind of high temperature resistant epoxy resin composite phase change material and preparation method thereof

A composite phase change material and epoxy resin technology, which is applied in the field of composite materials, can solve problems such as device wear, epoxy resin is easy to bond, and road performance is low, achieving stable performance, lower quality requirements, and high production efficiency.

Active Publication Date: 2019-02-26
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high temperature resistant epoxy resin composite phase change material and its preparation method, which can solve the problem of low pavement performance under the combined action of repeated loads and periodic environmental factors, and achieve Adjust the temperature of the road surface and improve the high and low temperature performance of the road surface; at the same time, it solves the problem that the epoxy resin is easy to bond and causes greater wear to the device

Method used

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  • A kind of high temperature resistant epoxy resin composite phase change material and preparation method thereof
  • A kind of high temperature resistant epoxy resin composite phase change material and preparation method thereof
  • A kind of high temperature resistant epoxy resin composite phase change material and preparation method thereof

Examples

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Embodiment 1

[0073] Comply with the above technical solutions, such as Figure 1 to Figure 6 As shown, the present embodiment provides a kind of granulation device, including a transmission unit 1, the transmission unit 1 includes a support frame 1-1, and a conveyor belt 1-2 is installed on the support frame 1-1, and the conveyor belt 1 The driving shaft 1-3 of -2 is connected with the speed control box 1-4; it also includes a feeding unit 2, a heating unit 3 and a cutting unit 4; the heating unit 3 and the cutting unit are installed on the support frame 1-1 Unit 4, the heating unit 3 includes a front heating unit 3-1 and a rear heating unit 3-2, and the cutting unit 4 is located between the front heating unit 3-1 and the rear heating unit 3-2;

[0074] The feeding unit 2 includes a wedge-shaped hopper 2-1. The wedge-shaped hopper 2-1 is installed on the front support frame 1-1 of the conveyor belt 1-2. The lower part of the wedge-shaped hopper 2-1 is provided with a discharge hole 2-2. Th...

Embodiment 2

[0090] The present embodiment provides a kind of phase-change microcapsules, in parts by weight, made of the following raw materials: 43 parts of phase-change materials, 21.5 parts of white carbon black particles, 3 parts of ethyl cellulose, 0.5 parts of plasticizer, 32 parts of solvent-based additives.

[0091] in:

[0092] The phase change material is paraffin, which can also be replaced by C12-C20 normal alkanes;

[0093] The plasticizer is a phthalate plasticizer, and a sebacate plasticizer, a citrate plasticizer, a propylene glycol sebacate polyester plasticizer or a phthalate polyester plasticizer can also be used. Replacement of similar plasticizers;

[0094] The solvent-based additive is toluene, which can also be replaced by methanol, absolute ethanol, cyclohexane or acetone.

[0095] The preparation method of phase change microcapsules is as follows:

[0096] Step 1.1, adding a plasticizer to the solvent-based additive according to the ratio of raw materials, sti...

Embodiment 3

[0103] This example provides a high temperature resistant epoxy resin composite phase change material, which is made of the following raw materials in parts by weight: 45 parts of phase change microcapsules, 45 parts of epoxy resin, and 10 parts of curing agent.

[0104] in:

[0105] Phase-change microcapsules adopt the phase-change microcapsules in Example 2.

[0106] The epoxy resin is a bisphenol A type epoxy resin.

[0107] The curing agent is ethylenediamine.

[0108] The preparation method of the high temperature resistant epoxy resin composite phase change material of this embodiment adopts the granulation device described in Example 1, and the preparation method specifically includes the following steps:

[0109] Step 1: Add diluent and curing agent weighed according to the ratio of raw materials to the epoxy resin in turn, stir for 3 minutes at 450 rpm, then slowly add phase-change microcapsules, stir for 3 minutes at 100 rpm, and disperse evenly. Obtain raw materi...

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Abstract

The invention discloses a high-temperature-resistant epoxy resin composite phase change material and a preparation method thereof. Based on the total amount of 100 parts, the high-temperature-resistant epoxy resin composite phase change material is prepared from the following raw materials in parts by weight: 20 to 45 parts of phase change microcapsules, 45 to 60 parts of epoxy resin, a curing agent of which the weight is 22 to 25 percent of that of the epoxy resin, and 0 to 10 parts of a diluent. The preparation method comprises the following steps: preparing the phase change microcapsules according to a raw material proportion, preparing an epoxy resin solution, and adding the epoxy resin into the phase change microcapsules to obtain a raw material mixed solution for the high-temperature-resistant epoxy resin composite phase change material; pouring the raw material mixed solution into a feeding unit of an epoxy resin composite material granulation device, and obtaining a granular epoxy resin finished product by virtue of a heating unit and cropping unit of the device. According to the high-temperature-resistant epoxy resin composite phase change material and the preparation method thereof, the high-temperature-resistant epoxy resin composite phase change material is prepared into solid granules from a viscous state, functions of heating, shaping, cropping and the like on the material can be simultaneously realized, and the finished product is dense in structure and stable in performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a high-temperature-resistant epoxy resin composite phase-change material and a preparation method thereof. Background technique [0002] With the vigorous development of social economy, the level of transportation is increasingly demanding. Good road service performance has been paid more and more attention by people. Under the influence of vehicle load and environment, there are various diseases on the highway pavement. These diseases are closely related to the influence of temperature. Under the combined effect of factors, high and low temperature diseases reduce the performance of the pavement and shorten the service life. [0003] For a long time, people have passively responded to the environmental temperature changes faced during the use of the pavement through measures such as modification of the mixture, adding fibers, and optimizing the gradatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 马骉黄维魏堃常鑫宇
Owner CHANGAN UNIV
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