Application of high temperature resistant polyurethane hardener

With the development of science and technology and the growth of industrial needs, the demand for materials that can maintain stable performance in high-temperature environments is also increasing. High-temperature-resistant polyurethane hardener improves the heat resistance, hardness and wear resistance of polyurethane materials, making them suitable for various high-temperature applications.

1. Characteristics of hardener

High temperature resistant polyurethane hardeners usually have the following characteristics:

• High heat resistance: Able to remain stable at higher temperatures and will not lose hardness or deform due to rising temperatures.
• Good chemical stability: It can still resist the erosion of chemical substances in high temperature environments.
• High hardness and wear resistance: By increasing the cross-linking density, the hardness and wear resistance of the material are improved.
• Low VOC: Meets environmental requirements and reduces emissions of volatile organic compounds.

2. Main ingredients

High temperature resistant polyurethane hardener usually contains the following main ingredients:

• Isocyanate: Such as MDI (diphenylmethane diisocyanate) or TDI (toluene diisocyanate), etc., used to form polyurethane network.
• Polyol: Choose polyols with good heat resistance, such as polyether polyols or polyester polyols.
• Catalyst: Such as organotin catalyst or amine catalyst, used to accelerate the reaction process.
• Fillers and additives: Including fillers such as nano-silica, as well as antioxidants, light stabilizers and other additives, used to improve the overall performance of the material.

3. Application fields

High temperature resistant polyurethane hardeners are widely used in many fields, including but not limited to:

• Automotive Manufacturing: Used to produce automotive parts, such as parts in the engine compartment, insulation materials around the exhaust system, etc.
• Aerospace: Sealing materials, insulation materials and coatings used in high-temperature environments in aircraft manufacturing.
• Power industry: used for cable sheathing, insulation materials, etc., especially equipment operating under high temperature conditions.
• Construction industry: Used in the manufacture of high-temperature resistant coatings, sealants and insulation materials.
• Electronic appliances: Used to produce high-temperature resistant electronic component packaging materials, etc.

4. Specific application cases

• Automotive engine parts: High-temperature resistant polyurethane hardener can be used to manufacture various parts under the hood, such as hoods, heat insulation pads, etc.
• Aerospace sealing materials: In the aerospace industry, used to make seals that can withstand extreme temperature changes, such as those around aircraft engines.
• Power cable sheath: Used to make cable sheath materials that can withstand high temperatures to protect cables from operating normally in high temperature environments.
• High temperature resistant coating for construction: In the construction industry, it is used to manufacture exterior wall coatings, roof waterproof coatings, etc. These coatings need to maintain good performance in high temperature environments.
• Electronic component packaging: Used to manufacture electronic component packaging materials that can withstand high temperatures to protect electronic equipment from operating normally in harsh environments.

5. Precautions for use

• Mixing ratio: Mix hardener and base material strictly according to the recommended ratio to ensure performance.
• Curing conditions: Control the curing temperature and time according to the requirements of the hardener to ensure that the material can be completely cured.
• Safety Measures: Take appropriate safety measures during use, such as wearing protective gloves and glasses, and ensuring the work area is well ventilated.

6. Conclusion

High-temperature-resistant polyurethane hardener improves the heat resistance, hardness and wear resistance of polyurethane materials, allowing them to be used in high-temperature environments keep it steady. With the advancement of technology and the growth of industrial demand, the application scope of this type of hardener will become more and more extensive. In the future, as new material technologies and production processes continue to improve, we can expect to see more high-performance, high-temperature-resistant polyurethane hardeners appear on the market to meet a variety of complex application needs.

Please note that the above provides a general introduction. When using it specifically, it is recommended to refer to the relevant product manuals or consult professional technical personnel for more detailed technical support and suggestions.

Extended reading:

N-Ethylcyclohexylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

CAS 2273-43-0/monobutyltinoxide/Butyltin oxide – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

DBU – Amine Catalysts (newtopchem.com)

bismuth neodecanoate – morpholine

DMCHA – morpholine

amine catalyst Dabco 8154 – BDMAEE

2-ethylhexanoic-acid-potassium-CAS-3164-85-0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62- 3 Evonik Germany – BDMAEE