HVA-2 the key to improve adhesive heat resistance and bond strength
HVA-2,N,N'-m-phenylene dimaleimide is a multifunctional rubber additive. Besides being widely used in the rubber industry as a vulcanizer, co-vulcanizer, and scorch retarder, it also plays a crucial role in adhesives, primarily due to its ability to significantly improve heat resistance and bond strength.
Certificate of Analysis
|
Product Name |
N,N'-m-phenylenedimaleimide(HA-8) |
|
|
Property |
Limits |
Results |
|
Form |
Free Flowing Powder |
Free Flowing Powder |
|
Color |
Yellow to light Brown |
Yellow |
|
Contamination |
None |
None |
|
Melting Range℃ |
≥195 |
201.8 |
|
Water % |
≤ 0.5 |
0.02 |
|
Ash % |
≤ 0.3 |
0.01 |
|
Oil % |
≤5 |
3.1 |
|
Acidity mgkoH/g |
≤5 |
1.1 |
|
Particle Size On 100 mesh % On 325 mesh % |
0.0Max 0.5Max |
0 0 |
Applications Specific Functions and Effects
Main Function As a heat-resistant modifier (resin monomer), it enhances the overall high-temperature resistance of the adhesive by participating in reactions.
Key Benefits:
1. Significantly Improves Heat Resistance: Enhances adhesive stability in high-temperature environments, preventing failure due to high temperatures.
2. Enhanced Bond Strength: Especially for difficult-to-bond materials such as metals.
Typical Dosage
The recommended addition level in adhesive formulations is generally 5-10 parts.
Applicable Systems For example, Anaerobic Adhesive.
Principle of Action and More Applications
HVA-2 molecules contain active double bonds that can undergo cross-linking reactions under heat or in the presence of an initiator, forming a stable network structure. This is why it can function both as a vulcanizing agent and as a heat-resistant modifier in adhesives.
In addition to its general use as a heat-resistant modifier, search results also mention HVA-2's applications in specific applications:
1.Metal Bonding: When used in high-end hot-melt paints and coatings, HVA-2 can improve adhesion to metals. This property is also suitable for adhesives requiring high-strength metal bonding.
2.Aerospace: Because HVA-2 is an excellent polymer heat-resistant additive, it is also used in heat-resistant materials in the aerospace industry, suggesting its potential application in specialty adhesives requiring extreme heat resistance.
Usage Guidelines and Precautions
When using HVA-2, there are several things to keep in mind:
1.Dosage: In adhesive formulations, the typical dosage is 5-10 parts. The optimal dosage should be determined through specific experiments.
2.Solubility: Understanding its solubility will help you select the appropriate solvent for pretreatment or dilution. HVA-2 is soluble in dioxane, tetrahydrofuran, and hot acetone, but insoluble in petroleum ether, chloroform, benzene, and water.
3.Storage Conditions: This product should be stored in a cool, dry, well-ventilated place, away from light and heat.