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Low-conductivity cooling liquid and preparation method thereof

A low-conductivity, coolant technology, applied in the field of coolant, can solve problems such as equipment damage, equipment series electricity, etc.

Pending Publication Date: 2022-03-25
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the cooling of these devices, the conductivity is a crucial indicator. If the conductivity is high, it is easy to make the devices connected in series and eventually lead to damage to the devices.
In addition, new equipment uses new materials, such as copper, lead brass, stainless steel, 2A12 aluminum, 5080 nitrile rubber, fluororubber, etc. The use of these materials also poses new challenges to the coolant

Method used

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  • Low-conductivity cooling liquid and preparation method thereof
  • Low-conductivity cooling liquid and preparation method thereof
  • Low-conductivity cooling liquid and preparation method thereof

Examples

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preparation example Construction

[0033] A preparation method of low-conductivity coolant, comprising the following steps:

[0034] A. Prepare deionized water, test its conductivity to ensure that it meets the requirements of first-grade water, mix qualified deionized water with ethylene glycol at 20-60°C, and stir for 10-30 minutes to form solution 1;

[0035] B: Mix the polyether, polytricarboxylic acid and dicarboxylic acid in the multi-effect composite preservative according to a certain ratio at 50-70°C, and stir for 30-60 minutes;

[0036] C: At 50-70°C, add multi-effect compound preservative and defoamer to solution 1 and stir for 30-60 minutes to form solution 3;

[0037] D: Filter solution 3 through a cation exchange resin to obtain the product.

Embodiment 1

[0039] Embodiment 1, a kind of low-conductivity cooling liquid, comprises the raw material of following parts by weight (this embodiment is in gram):

[0040] Deionized water 50, ethylene glycol 50, multi-effect compound preservative 0.02, defoamer (EX-504) 0.001; among them, the multi-effect compound preservative is polyether, polytricarboxylic acid, sebacic acid according to 1: 0.1:1 mixed; the polyether structure is:

[0041]

[0042] The polytricarboxylic acid structure is:

[0043]

[0044] A preparation method of low-conductivity coolant, comprising the following steps:

[0045] A: Prepare deionized water, test its conductivity to ensure that it meets the requirements of first-class water, mix 50 grams of deionized water and 50 grams of ethylene glycol at 25 ° C, and stir for 30 minutes to form solution 1;

[0046] B: At 50°C, mix 0.02 grams of multi-effect preservative, in which polyether, polytricarboxylic acid, and sebacic acid are mixed at a ratio of 1:0.1:1,...

Embodiment 2

[0053] Embodiment 2, a kind of low-conductivity coolant, comprises the raw material of following parts by weight (this embodiment is in gram):

[0054] Deionized water 10, ethylene glycol 10, multi-effect compound preservative 10, defoamer (CK-C155) 0.005; among them, the multi-effect compound preservative is polyether, polytricarboxylic acid, octadecanedioic acid Made by mixing 1:0.1:1;

[0055] The polyether structure is:

[0056]

[0057] The polytricarboxylic acid structure is:

[0058]

[0059] A preparation method of low-conductivity coolant, comprising the following steps:

[0060] A: Prepare deionized water, test its conductivity to ensure that it meets the requirements of first-class water, mix 10 grams of deionized water with 90 grams of ethylene glycol at 60 ° C, and stir for 10 minutes to form solution 1;

[0061] B: At 70°C, mix 10 grams of multi-effect preservative, in which polyether, polytricarboxylic acid, and octadecanedioic acid are mixed in a ratio...

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Abstract

The invention discloses a low-conductivity cooling liquid and a preparation method thereof. The cooling liquid comprises the following raw materials in parts by weight: 10-50 parts of deionized water, 50-90 parts of ethylene glycol, 0.01-10 parts of a multi-effect compound preservative and 0.001-0.1 part of a defoaming agent. The multi-effect compound preservative is composed of polyether, polytricarboxylic acid and dicarboxylic acid in a mass ratio of 1: (0.1-2): 1. The preparation method comprises the following steps: A, mixing qualified deionized water with ethylene glycol at 20-60 DEG C, and stirring for 10-30 minutes to form a solution 1; b, mixing polyether, polytricarboxylic acid and dicarboxylic acid in the multi-effect compound preservative according to a certain proportion at 50-70 DEG C, and stirring for 30-60 minutes; c, under the condition of 50-70 DEG C, adding a multi-effect compound preservative and a defoaming agent into the solution 1, and stirring for 30-60 minutes to form a solution 3; and D, filtering the solution 3 through cation exchange resin to obtain the product. The cooling liquid has the characteristics of low conductivity, good corrosion resistance and good rubber compatibility.

Description

technical field [0001] The invention belongs to the technical field of cooling liquid, and relates to a cooling liquid and a preparation method thereof, in particular to a low-conductivity cooling liquid and a preparation method thereof. Background technique [0002] With the development of new energy technologies, various electronic devices are widely used, such as lithium batteries, fuel cells, radars, 5G base stations, etc. With the application of these devices, how to run efficiently, stably, and for a long period of time is the biggest challenge. Among them, cooling is one of the first conditions for the normal operation of the equipment because of the high heat generation. For the cooling of these devices, the electrical conductivity is a crucial indicator. If the electrical conductivity is high, it is easy to cause the equipment to be connected in series, which will eventually lead to equipment damage. In addition, new equipment uses new materials, such as copper, le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 程亮李锦仪陈海金
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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