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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