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Heat exchanger, ceramic as well as preparation method and application of ceramic

A heat exchanger and ceramic technology, applied in the field of heat exchangers, can solve problems such as poor corrosion resistance of metal heat exchangers

Active Publication Date: 2022-04-12
SONGSHAN LAKE MATERIALS LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a heat exchanger, ceramics and its production method and application, to partially or completely improve or even solve the existing metal heat exchanger resistance The problem of poor corrosion

Method used

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  • Heat exchanger, ceramic as well as preparation method and application of ceramic
  • Heat exchanger, ceramic as well as preparation method and application of ceramic
  • Heat exchanger, ceramic as well as preparation method and application of ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] 1. Slurry formula

[0089] SiC powder (D50=5μm): 2000g, SiC powder (D50=1.5μm): 1000g, Si powder (D50=20μm): 1130g, thermosetting phenolic resin: 1380g, Tween 20: 18g, dodecylbenzenesulfonic acid : 30g, industrial alcohol (purity=97%): 2500g.

[0090] 2. Preparation process

[0091] Step 1, design the three-dimensional model of the heat exchanger, and prepare the polymer porous material model of the heat exchanger through 3D printing and photo-curing;

[0092] Step 2, weighing the raw materials according to the formula, mixing and ball milling for 6 hours to prepare SiC-Si-phenolic resin slurry;

[0093] Step 3, immerse the polymer porous material model printed in step 1 into the slurry in step 2, take it out and centrifuge it, and blow it evenly with compressed air, the pressure of the compressed air is 0.5MPa, dry and solidify in an oven at a temperature of 50°C Keep warm for 30mins, heat up to 120°C and keep warm for 10mins; repeat dipping, centrifugation, purging...

Embodiment 2

[0097] 1. Slurry formula

[0098] SiC powder (D50=10μm): 600g, SiC powder (D50=5μm): 900g, SiC powder (D50=1.5μm): 1500g, Si powder (D50=10μm): 2000g, thermoplastic phenolic resin: 2880g, Uroto Product: 57.6g, castor oil: 30g, triolein: 10g, absolute ethanol: 3150g.

[0099] 2. Preparation process

[0100] Step 1, design the three-dimensional model of the heat exchanger, and prepare the polymer porous material model of the heat exchanger by 3D printing photocuring (same as Example 1);

[0101] Step 2, weighing the raw materials according to the formula, mixing and ball milling for 5 hours to prepare SiC-Si-phenolic resin slurry;

[0102] Step 3, immerse the polymer porous material model printed in step 1 into the slurry in step 2, take it out and centrifuge it, and use compressed air to blow it evenly. Keep warm for 10mins, heat up to 120°C and keep warm for 20mins; repeat dipping, centrifugation, purging, drying and curing until all surfaces of the porous polymer material ...

Embodiment 3

[0106] 1. Slurry formula

[0107] SiC powder (D50=5μm): 2000g, SiC powder (D50=1.5μm): 1000g, Si powder (D50=20μm): 1130g, thermosetting phenolic resin: 1380g, Tween 20: 18g, dodecylbenzenesulfonic acid : 30g, industrial alcohol (purity=97%): 2500g.

[0108] 2. Preparation process

[0109] Step 1, design the three-dimensional model of the heat exchanger, and prepare the polymer porous material model of the heat exchanger through 3D printing and photo-curing;

[0110] Step 2, weighing the raw materials according to the formula, mixing and ball milling for 6 hours to prepare SiC-Si-phenolic resin slurry;

[0111] Step 3, immerse the polymer porous material model printed in step 1 into the slurry in step 2, take it out and centrifuge it, and blow it evenly with compressed air, the pressure of the compressed air is 0.5MPa, dry and solidify in an oven at a temperature of 50°C Keep warm for 30mins, heat up to 120°C and keep warm for 10mins; repeat dipping, centrifugation, purging...

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Abstract

The invention discloses a heat exchanger, ceramic and a preparation method and application thereof, and belongs to the field of heat exchangers. The method for manufacturing the heat exchanger comprises the following steps: providing a substrate, wherein the substrate is provided with a porous polymer template and a covering layer combined with the polymer template; wherein the coating layer mainly comprises silicon carbide, silicon and a high polymer material in a mixed state, and the high polymer template and the high polymer material can be carbonized through thermal cracking; and pyrolyzing the substrate in a vacuum or inert atmosphere and sintering after the pyrolyzing, so that the silicon reacts with carbon generated in the pyrolyzing process to be converted into silicon carbide. The heat exchanger obtained through the method is mainly a silicon carbide phase, so that the heat exchanger has the advantages of corrosion resistance, heat conduction, high strength and the like, and can provide longer service life.

Description

technical field [0001] The present application relates to the field of heat exchangers, in particular, to a heat exchanger, ceramics and their production methods and applications. Background technique [0002] A Stirling engine is an engine that uses an external heat source to achieve a reversible cycle (Stirling cycle). The Stirling engine pushes the piston to do work through the pressure difference generated by the working medium (hydrogen, nitrogen, argon, helium, etc.) in the cylinder undergoing periodic thermal expansion and exothermic contraction, thereby realizing the conversion of thermal energy and mechanical energy. Therefore, the Stirling engine is also called an external combustion engine. Its working efficiency is between the general gasoline engine and diesel engine. [0003] The external heat sources of the Stirling engine include combustible fossil energy, biomass energy, solar energy, and various industrial waste heat and waste heat. Since the combustion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/65F02G1/057C04B38/06
Inventor 吴泽霖任志恒付超朱凯
Owner SONGSHAN LAKE MATERIALS LAB