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Polyurethane mixed component series

detail

It is a two-component mixed component designed for the production of high-grade cold-cured high-rebound polyurethane foam products. The product performance is formulated according to the People's Republic of China industry standard QB/T2080-95. Component A consists of high-activity polyether polyol, surfactant, cross-linking agent, foaming agent and other components; component B is composed of isocyanate TDI, MDI, modified TDI. The operation is convenient and the product performance is superior.

Product list:

Brand	Product name	Scope of application
HW-0301	High density high rebound mixed component	Car, motorcycle, bicycle saddle
HW-0302	Medium density high rebound mixed component	Car, train, sofa cushion
HW-0303	Low density high rebound mixed component	Car, train, sofa seat back, toy

Physical properties:

Item\ Index\Component	Component A	Component B
Appearance	Milky white viscous liquid	Dark brown liquid
Specific gravity g/cm3	1.08±0.05	1.25±0.05
Viscosity CPS/25°C	1500±200	200±50
Hydroxyl value mgKOH/g	50±10
NCO %		35-46

Reaction time:

Item\Time S\ Model	HW-0301	HW-0302	HW-0303
Cream time	10-12	8-10	6-10
Gelation time	80-90	60-80	60-70
Demoulding time	200-300	200-240	180-240

Performance Index of Products:

Item\ Index\ Model	HW-0301	HW0302	HW-0303
Density Kg/m3	60-80	45-55	35-40
Tensile strength, Kpa≥	100	80	75
Elongation%≥	90	100	110
Rebound rate%≥	55	60	60
Tear strength N/cm≥	2.5	1.75	1.7
Maximum change rate of tensile strength after dry heat aging (140 ° C, 16 h)	±30	±30	±30
Maximum change rate of tensile strength after damp heat aging (105 ° C, 100% RH, 3 h)	±30	±30	±30
75% compression set (70 ° C, 22h)% ≤	10	10	10
Hardness when indented 25%, N, ≥	180	120	120
Hardness when indented at 65%, N, ≥	468	315	315
65%/25% indentation ratio, ≥	2.6	2.6	2.6

Packing: galvanized barrel, 200KG / barrel

Storage: six months

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