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Bi-component fast-curing plastic cement and preparation method thereof

A rapid curing, two-component technology, applied in the field of polymer functional materials, can solve the problems of poor plasticity, long curing time, and difficult expansion, etc., and achieve the effect of convenient curing forming, fast curing speed and convenient expansion

Active Publication Date: 2020-12-11
中电保力(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects of poor toughness, poor plasticity, difficulty in expansion, and easy pulverization and fragmentation after long-term work, long curing time and complicated steps in application in the prior art, the present invention provides a A polymer clay based on polyurethane. The product is two-component. When using it, the two-component can be directly kneaded into a suitable shape by hand. The curing time is fast, the mechanical properties are good after curing, and the hardness and toughness are satisfactory. Corrosion, good weather resistance, is a new type of polyurethane cement with excellent comprehensive performance

Method used

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  • Bi-component fast-curing plastic cement and preparation method thereof
  • Bi-component fast-curing plastic cement and preparation method thereof
  • Bi-component fast-curing plastic cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0051] Take 20g of Kunlun 52# ​​paraffin and heat it above 60°C to liquefy the paraffin, put it into 50mL of 30wt% hydrogen peroxide, stir and react at 40°C for 15 minutes, then quickly transfer it to an ice-water bath to cool to room temperature, the paraffin is condensed into particles, filtered, and washed with water until medium Afterwards, put the surface hydroxyl-modified paraffin into a vacuum oven and dry at 25-30° C. to obtain modified paraffin 1. After testing, the number of hydroxyl groups on the surface of the obtained modified paraffin wax is 0.132 mmol / g.

preparation example 2

[0053] Other methods and conditions were the same as those in Preparation Example 1, except that the reaction time was 20 minutes to obtain modified paraffin wax 2, and the number of surface hydroxyl groups of the obtained modified stone 2 was 0.164 mmol / g.

preparation example 3

[0055] Other methods and conditions were the same as those in Preparation Example 1, except that the reaction time was 30 minutes to obtain modified paraffin wax 3, and the number of surface hydroxyl groups of the obtained modified paraffin wax 3 was 0.253 mmol / g.

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Abstract

The invention provides double-component fast-curing plastic cement which is composed of a component A and a component B. The component A comprises polyether polyol, a curing agent, surface hydroxyl modified paraffin, a thickening agent and solid filler. The component B comprises polyether polyol, a catalyst, a cross-linking agent, surface hydroxyl modified paraffin, a thickening agent and a solidfiller. Paraffin with a certain hydroxyl on the surface is introduced into the two components so that certain surface lubricity is provided, and hands of an operator cannot be stuck during kneading; meanwhile, hydroxyl on the surface can react with isocyanate so that the compatibility is good after curing and the material is prevented from cracking, powdering and deforming due to migration. In addition, due to good compatibility, the cement obtained after curing has very good weather resistance in high-temperature, high-humidity, high-salt and other environments, and can play a role in protecting and plugging electrical equipment for a long time in a severe environment.

Description

technical field [0001] The invention belongs to the field of polymer functional materials, and in particular relates to a two-component fast-curing plastic clay and a preparation method thereof. Background technique [0002] In order to prevent electrical equipment, wires, etc. from leaking, they are generally sealed and protected with anti-leakage tape. However, this method cannot isolate electrical equipment from contact with water vapor, and cannot achieve a complete sealing effect. Long-term use has a greater potential safety hazard of short circuit. At the same time, after some equipment, including connectors, wires are oxidized, the resistance increases and the heat generation increases significantly, which affects the service life of cables and wires, and is easy to burn out the wires and cause accidents. [0003] In the prior art, some cement is often used to block and protect electrical equipment and wire joints. Traditionally, red mud is used for dehydration cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L91/06C08K13/04C08K7/26C08K3/26C08K13/02C08K3/34
CPCC08L75/08C08L2205/03C08L2201/08C08K2003/265C08K2201/003C08K2201/006C08L91/06C08K13/04C08K7/26C08K3/26C08K13/02C08K3/34
Inventor 袁振王少华王宇川
Owner 中电保力(北京)科技有限公司
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