Pre-embeded Hardener Heat Activated In PU Adhesive

Pre-embeded (Enclosed) hardener YH-950 is an active closed hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate; It can be used as an additive of water-based baking system and has the characteristics of low temperature unsealing.

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Description

Pre-embeded hardener heat activated in PU adhesive

Enclosed Type Waterborne Polyurethane Curing Agent

YH-950

DESCRIPTION

TECHNICAL SPECIFICATIONS

Technical Standard

Appearance ----------------Water white to yellowish transparent liquid

Solid Content /% ---------------70.0±2.0

Block isocyanate content --------6.5-7.0

Viscosity (cp. 25℃) ------------500-1000

OTHER DATA

The following are typical features should not be considered as YH-950 product specifications

Typical Data

Average equivalent----------------≈626

Relative Density (g/cm³, 25℃) ------1.03-1.05

Flash point /℃ -------------------≈29℃

COMPATIBILITY

YH-950 can be diluted with esters, ether esters, ketones and other solvents, and can also be diluted with water. The diluted solution should always be tested for compatibility and stability.

PRECAUTIONS FOR STORAGE (USE)

Because YH950 has a certain hydrophilicity, it can be easily dispersed in water under common commercial shear force. It is a curing agent suitable for water-diluting single[1] component polyurethane baking system, which helps to improve the hardness, adhesion, 2 / 2 water resistance and chemical resistance of the coating after film formation.

Technical Data Sheet

The crosslinking effect of YH-950 is affected by the baking temperature and the type of coreactant. Under normal circumstances, when the baking temperature is greater than 90℃, the blocking isocyanate will be released and the crosslinking reaction will begin; The recommended baking temperature is 100℃, and the baking time should be reduced with the increase of baking temperature.