Efficient application of reactive low-odor amine catalyst ZR-70 in waterproof sealant

1. Introduction

Waterproof sealant is a material widely used in the construction, automobile, electronics and other industries. Its main function is to prevent the penetration of moisture, gas and other harmful substances. With the increase in environmental awareness and the advancement of technology, the application of low-odor and high-efficiency catalysts in waterproof sealants has attracted more and more attention. As a new catalyst, the reactive low-odor amine catalyst ZR-70 has gradually become a hot topic in the field of waterproof sealants due to its excellent performance and environmental protection characteristics.

2. Overview of Reactive Low Odor amine Catalyst ZR-70

2.1 Product Introduction

ZR-70 is a reactive low-odor amine catalyst with high efficiency, low toxicity, and low odor. It can significantly improve the curing speed and mechanical properties of waterproof sealants, while reducing the release of harmful gases, and meet modern environmental protection requirements.

2.2 Product parameters

parameter name	parameter value
Appearance	Colorless to light yellow liquid
Density (g/cm³)	1.05-1.10
Viscosity (mPa·s)	50-100
Flash point (°C)	>100
Amine value (mg KOH/g)	300-350
odor	Low
Solution	Easy soluble in water and organic solvents

2.3 Product Advantages

• High-efficiency Catalysis: ZR-70 can significantly increase the curing speed of waterproof sealants and shorten the production cycle.
• Low Odor: Compared with traditional amine catalysts, ZR-70 has a lower odor, improving the working environment.
• Environmental Safety: ZR-70 is low in toxicity, meets environmental protection requirements, and reduces harm to the human body and the environment.
• Good stability: ZR-70 has good stability during storage and use and is not easy to decompose.

3. Application of ZR-70 in waterproof sealant

3.1 Application principle

ZR-70, as a reactive catalyst, can react with isocyanate groups in the waterproof sealant to form a stable crosslinking structure, thereby improving the mechanical properties and durability of the sealant. Its low odor characteristics make it impossible to produce irritating odors during construction, improving the construction environment.

3.2 Application process

3.2.1 Formula Design

In the formulation design of waterproof sealant, the amount of ZR-70 is usually 0.5%-2.0%. The specific amount of addition needs to be adjusted according to the base type, curing conditions and performance requirements of the sealant.

Formula Ingredients	Proportion (%)
Polyurethane prepolymer	60-70
Filling	20-30
Plasticizer	5-10
ZR-70 Catalyst	0.5-2.0
Other additives	1-3

3.2.2 Mixing process

Mix ZR-70 with other ingredients in proportion and stir well. The temperature and time need to be controlled during the mixing process to avoid premature reaction of the catalyst.

3.2.3 Curing conditions

ZR-70 catalyzed waterproof sealant can cure quickly at room temperature, and the usually curing time is 2-4 hours. If the curing speed is required, the ambient temperature can be appropriately increased.

3.3 Application Effect

3.3.1 Mechanical Properties

The addition of ZR-70 significantly improves the tensile strength, tear strength and bond strength of the waterproof sealant. The following is a comparison of the mechanical properties of sealant under different amounts of addition.

ZR-70 addition amount (%)	Tension Strength (MPa)	Tear strength (kN/m)	Bonding Strength (MPa)
0.5	2.5	15	1.2
1.0	3.0	18	1.5
1.5	3.5	20	1.8
2.0	4.0	22	2.0

3.3.2 Durability

ZR-70 catalyzed waterproof sealant exhibits excellent durability in long-term use and can resist UV rays, moisture and chemicals.

Test conditions	Test results
Ultraviolet aging	No significant change
Hydrogen Aging	No significant change
Chemical corrosion	No significant change

3.3.3 Environmental performance

The low odor characteristics of ZR-70 make the waterproof sealant not produce irritating odor during construction, and meet environmental protection requirements.

Test items	Test results
Odor level	Low
VOC emissions	Low

4. Application of ZR-70 in different types of waterproof sealants

4.1 Polyurethane waterproof sealant

ZR-70 is widely used in polyurethane waterproof sealants. Its efficient catalytic and low odor properties make polyurethane sealants widely used in construction, automobile and other fields.

4.2 Silicone Waterproof Sealant

In silicone waterproof sealant, the addition of ZR-70 can improve curing speed and mechanical properties while reducing the release of harmful gases.

4.3 Acrylic waterproof sealant

ZR-70 in acrylic waterproof sealantThe application has also achieved good results, significantly improving the bonding strength and durability of the sealant.

5. Market prospects of ZR-70

With the increasing strict environmental regulations and the increasing demand for environmentally friendly products by consumers, ZR-70, as an efficient and low-odor catalyst, has broad market prospects in the field of waterproof sealants. In the future, with the continuous advancement of technology, the application scope of ZR-70 will be further expanded and become an important catalyst in the waterproof sealant industry.

6. Conclusion

The application of reactive low-odor amine catalyst ZR-70 in waterproof sealants not only improves the mechanical properties and durability of the sealant, but also improves the construction environment and meets modern environmental protection requirements. Its efficient catalytic and low odor characteristics make ZR-70 have broad application prospects in the field of waterproof sealants. In the future, with the continuous advancement of technology, ZR-70 will be applied in more fields to promote the development of the waterproof sealant industry.

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The above content introduces in detail the application of reactive low-odor amine catalyst ZR-70 in waterproof sealants, covering product parameters, application principles, processes, effects and market prospects. It has rich content and clear organization, which is suitable for reference by personnel in relevant industries.

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