1. Curing conditions
Room temperature curing:
Crosslinking reaction can occur at ambient temperature (usually around 25 ℃) without the need for additional heating. Its curing depends on the high reactivity of polysilazane itself (such as reacting with moisture in the air or hydroxyl groups on the substrate surface), but the complete curing time is relatively long (usually 3-7 days).
High temperature curing:
External heating (such as above 110 ℃) is required to trigger cross-linking reaction, and the curing speed is fast (such as initial curing in 10 minutes), but complete curing still takes several days. High temperature can accelerate the cross-linking of molecular chains, forming a more stable three-dimensional network structure.
2. Performance characteristics
Hardness and heat resistance:
Room temperature curing type usually has higher hardness (such as pencil hardness up to 8H), and ultimately has stronger heat resistance (such as temperature resistance above 800 ℃).
The high-temperature curing type has a slightly lower hardness after curing (such as 4-6H), and long-term use temperature may be limited (such as only withstanding 300 ℃), but the hardness can be further improved through subsequent high-temperature treatment (such as 700-1000 ℃) (such as reaching 13GPa).
Chemical stability:
Room temperature curing type has better resistance to water, solvents, and corrosive substances, making it suitable for harsh environments; High temperature curing type may have slightly lower stability due to partial decomposition during the curing process.
3. Application scenarios
Room temperature curing:
Suitable for large equipment, complex structures, or substrates that cannot be heated (such as plastics and electronic components), requiring high hardness, high temperature resistance, and long-term protection (such as aerospace coatings and anti-corrosion of nuclear power equipment).
High temperature curing:
Suitable for scenarios that require rapid film formation (such as production line coating), or fields that require low heat resistance but short-term protection (such as ordinary industrial component coating).
4. Typical product examples
Room temperature curing type:
Such as the SN3600 from Hangzhou Wanguan Technology, which can quickly dry at room temperature (1 hour) and withstand high temperatures of 800 ℃ after complete curing, is used in ships, chemical pipelines, etc.
High temperature curing type:
NS3800 needs to be heated at 110 ℃ for 10 minutes for initial curing, which is suitable for small components that require rapid production, but its long-term temperature resistance is only 300 ℃.
summarize
The core difference between the two lies in the influence of curing conditions on the degree of crosslinking and the final structure. Room temperature curing relies on natural reactions, with more comprehensive performance but time-consuming; High temperature curing accelerates the process through heating, which is suitable for specific efficiency requirements. When selecting, it is necessary to consider the characteristics of the substrate, the usage environment, and production efficiency comprehensively.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.     
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.