ABOUT

HD-SM-8870 PU Adhesive Systems

Beijing Maohua PU Building Materials Co., Ltd.

HD-SM-8870PU is double-component system designed by Beijing Bora Polyurethane Products Co.,Ltd for the bond needed of continuous or discontinuous EPS sandwich panels,etc. B-component is modified polyisocyanate(MDI), while A-component is made up of polyether polyalcohol, blowing agent,catalyst and stabiliser,etc.

*  HD-SM-8870 is featuring of low viscosity and applying to the technique requirements of vertical and horizontal continuous or discontinuous production.
*  HD-SM-8870 has excellent adhesive performance, especially applied to two-paint and one-drying steel board.
*  HD-SM-8870 has wide application for board temperature and environment temperature.

Physical Properties：

A Component		B Component
Item	Index	Item	Index
Hydroxy Content (MgKOH/g)	425±25	-NCO Content(%)	30-32
Viscosity (25℃)(MPa.s)	200±50	Viscosity (25℃)(MPa.s)	200±40
Specific Gravity (25℃)(g/cm3)	1.18±0.05	Specific Gravity (25℃)(g/cm3)	1.235±0.015

        Proportion of Weight：A：B = 1：1 （Or according to the requirement of technique A：B = 1：1.5）
        reaction time：（Data of Laboratory Test, Working Temperature at 25℃）

Reaction Time	HD-SM-8870
CT（sec）	10-12
GT（sec）	18-20
RT（sec）	22-25
TFT（sec）	35-40

Foam Performance：Bond Strength (mPa）≥0.78

        Packaging：Galvanized Zinc Metal Barrel。A Component：200kg/barrel；B Component：250kg/barrel
        Shelf Life：6 Months