2025-03-11 05:02:44news1Read

Study on improving the wear resistance of the coating by post-mature catalyst TAP

Introduction

In modern industry, the wear resistance of the coating is one of the key factors that determine its service life and performance. To improve the wear resistance of the coating, researchers continue to explore new materials and technologies. As a new catalyst, the post-matured catalyst TAP (Thermally Activated Polymerization) has attracted widespread attention in the field of coatings in recent years. This article will introduce in detail the characteristics, mechanism of action of TAP catalysts and their applications in improving the wear resistance of coatings.

1. Overview of TAP catalyst

1.1 Basic characteristics of TAP catalyst

TAP catalyst is a heat-activated polymerization catalyst that can induce polymerization reactions at specific temperatures. Its main characteristics include:

Thermal activation characteristics: The TAP catalyst remains stable at room temperature and is activated only when it reaches a specific temperature, triggering a polymerization reaction.
High efficiency: TAP catalysts can achieve efficient polymerization reactions at lower concentrations, reducing the amount of catalyst used.
Environmentality: TAP catalyst does not produce harmful substances during the reaction process and meets environmental protection requirements.

1.2 Mechanism of action of TAP catalyst

The mechanism of action of TAP catalyst mainly includes the following steps:

Thermal activation: When the temperature reaches the activation temperature of the TAP catalyst, the catalyst molecules begin to decompose and release active free radicals.
Initiate polymerization: Reactive radicals bind to monomer molecules, trigger polymerization reactions, and form polymer chains.
Channel Growth: The polymer chain continues to grow, forming high molecular weight polymers.
Channel Termination: When the polymer chain reaches a certain length, the reaction terminates to form a stable polymer.

2. Application of TAP catalyst in coatings

2.1 Basic composition of coating

Coating is usually composed of the following parts:

Substrate: The carrier of the coating, such as metals, plastics, etc.
Resin: The main component of the coating determines the basic properties of the coating.
Filler: used to improve the mechanical properties of the coating, such as wear resistance, hardness, etc.
Added agents: used to improve the processing and usage performance of coatings, such as leveling agents, defoaming agents, etc.

2.2 The role of TAP catalyst in coating

The role of TAP catalyst in coating is mainly reflected in the following aspects:

Improve the crosslinking density of the coating: TAP catalyst can induce the crosslinking reaction of the resin, increase the crosslinking density of the coating, thereby enhancing the wear resistance of the coating.
Improve the mechanical properties of the coating: By increasing the crosslink density of the coating, the TAP catalyst can significantly improve the hardness, impact resistance and other mechanical properties of the coating.
Extend the service life of the coating: Since the TAP catalyst can improve the wear resistance of the coating, it can significantly extend the service life of the coating.

3. Experimental study on improving the wear resistance of coatings by TAP catalysts

3.1 Experimental materials and methods

3.1.1 Experimental Materials

Substrate: Aluminum alloy plate
Resin: Epoxy resin
Filler: Silica
Adjusting: Leveling agent, defoaming agent
TAP catalyst: TAP catalyst at different concentrations

3.1.2 Experimental Methods

Coating preparation: Mix epoxy resin, silica, leveling agent, defoaming agent and TAP catalyst of different concentrations evenly, apply it on an aluminum alloy plate to form a coating.
Thermal curing: The coating is heat-cured at a specific temperature to activate the TAP catalyst and initiate a polymerization reaction.
Property Test: The cured coating is subjected to wear resistance, hardness, impact resistance and other performance tests.

3.2 Experimental results and analysis

3.2.1 Wear resistance test

The coating is tested for wear resistance through the Taber wear resistance tester, and the results are shown in the table below:

TAP catalyst concentration (%)	Abrasion (mg)
0	120
0.5	90
1.0	70
1.5	50
2.0	40

It can be seen from the table that as the concentration of TAP catalyst increases, the wear amount of the coating gradually decreases, indicating that the TAP catalyst can significantly improve the wear resistance of the coating.

3.2.2 Hardness Test

The hardness test of the coating is performed through the pencil hardness tester, and the results are shown in the following table:

TAP catalyst concentration (%)	Hardness (H)
0	2H
0.5	3H
1.0	4H
1.5	5H
2.0	6H

It can be seen from the table that as the concentration of TAP catalyst increases, the hardness of the coating gradually increases, indicating that the TAP catalyst can significantly increase the hardness of the coating.

3.2.3 Impact resistance test

The impact resistance test of the coating is performed through an impact tester, and the results are shown in the following table:

TAP catalyst concentration (%)	Impact Strength (J)
0	10
0.5	12
1.0	14
1.5	16
2.0	18

It can be seen from the table that with the increase of the concentration of TAP catalyst, the impact resistance of the coating gradually increases, indicating that the TAP catalyst can significantly improve the impact resistance of the coating.

4. Application prospects of TAP catalysts

4.1 Industrial Application

TAP catalysts have broad application prospects in the industry, especially in areas where high wear resistance coatings are needed, such as automobiles, aerospace, electronics, etc. By using TAP catalyst, the wear resistance of the coating can be significantly improved, the service life of the product can be extended, and the maintenance costs can be reduced.

4.2 Environmental Advantages

TAP catalyst does not produce harmful substances during the reaction process and meets environmental protection requirements. With the increasing stricter environmental regulations, the application of TAP catalysts will become more and more extensive.

4.3 Economic benefits

Although the price of TAP catalysts is relatively high, due to their high efficiency, the amount of catalyst used can be reduced, thereby reducing the overall cost. In addition, by improving the wear resistance of the coating, the service life of the product can be extended and the maintenance and replacement costs can be further reduced.

5. Conclusion

By studying the TAP catalyst in improving the wear resistance of the coating, the following conclusions can be drawn:

TAP catalysts can significantly improve the wear resistance, hardness and impact resistance of the coating.
TAP catalysts have broad application prospects, especially in industrial fields where high wear resistance coatings are required.
TAP catalyst has environmental advantages and meets the environmental protection requirements of modern industry.
Although the price of TAP catalysts is high, their efficiency and economic benefits make them have wide application potential.

To sum up, TAP catalysts have significant advantages in improving the wear resistance of coatings and are expected to be widely used in more fields in the future.

Appendix

Appendix 1: Physical and Chemical Properties of TAP Catalyst

Properties	value
Molecular Weight	200-300 g/mol
Activation temperature	80-120℃
Solution	Easy soluble in organic solvents
Stability	Stable at room temperature

Appendix 2: Coating performance testing method

Test items	Test Method
Abrasion resistance	Taber wear-resistant tester
Hardness	Pencil hardness tester
Impact resistance	Impact Tester

Appendix 3: Summary of experimental data

TAP catalyst concentration (%)	Abrasion (mg)	Hardness (H)	Impact Strength (J)
0	120	2H	10
0.5	90	3H	12
1.0	70	4H	14
1.5	50	5H	16
2.0	40	6H	18

Through the above data and experimental results, the significant effect of TAP catalyst in improving the wear resistance of the coating can be clearly seen. In the future, with the continuous advancement of technology, the application of TAP catalysts will be more extensive, providing strong support for the performance improvement of industrial coatings.

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