Commonly used products in the field of polyurethane foam

2021-11-24   Pageview:93

Application areas: polyurethane rigid foam, soft foam, self-curing leather, shoe material
Characteristics: Delayed, heat-sensitive
Effects: Extend emulsion time, extend drawing time
Use system: MDI/TDI/PAPI/mixed isocyanate

DY-215
Special amine delayed gel type catalyst, provides excellent pre-fluidity of products, delays drawing time, does not affect post-ripening of products, accelerates demoulding of products.
DY-225
Diol solution of modified bis(dimethylaminoethyl) ether, delayed foaming catalyst, delaying emulsion time, improving flowability and shortening demoulding time
DY-300
Delayed gelation catalyst, improved flowability, good open-hole property. Used for molding high resilience, self-crusting, etc.
DY-400
Delayed foaming catalyst, can improve the bearing capacity of foam. Used for molding high resilience, self-crusting, microcellular foam, etc.
DY-8154
Modified triethylene diamine diol solution, delayed gel catalyst, can improve flowability and shorten demoulding time.

 

 

 

 

 

 

 

 

 

 

 

 

In the application, pay attention to the finely divided mica (diameter <10pm can easily become dust in the air and easy to be absorbed by people), it should always be processed and used in a well-ventilated place, for the larger size of 100 mesh or larger Particles are rarely inhaled, so they can be considered safer. The maximum allowable volume (TLV) of mica dust is the same as that of talc.

Although the amount of mica powder used in decorative fire-resistant coatings and ultra-thin fire-resistant coatings is small, it has certain characteristics in extender pigments, such as temperature resistance, acid resistance, alkali resistance, high insulation, and a certain gloss. It has excellent weather resistance, polytetrafluoroethylene wax msds good chemical resistance, low thermal conductivity, and stability at high temperatures, so it is one of the indispensable fillers in some fireproof coatings.

Mica powder is a high-quality filler used in fire-resistant coatings, which can reflect light and heat and reduce the damage of ultraviolet rays and other light and heat to the coating film. At the same time, it can increase the acid and alkali resistance and electrical insulation of the coating.

Improve the frost resistance, toughness and compactness of the coating, reduce the air permeability of the coating, prevent spots and cracks, and improve oil and water erosion resistance. Mica powder does not absorb water, has a light bulk density, and has a density of 2.65g/cm. The thermal expansion coefficient can be adjusted according to requirements. Therefore, it is widely used as a reinforcing filler in thick steel structure fireproof coatings, prestressed concrete floor fireproof coatings and tunnel fireproof coatings. Main performance It can control shrinkage and cracks, maintain plasticity, reduce the dry density of fireproof coatings, and improve fireproofing and heat insulation, acid resistance, alkali resistance, and heat resistance of fireproof coatings.

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