6. Cross-Linking Agent


1) Composition and Features
Grade Composition Features and uses
NP-300 Special Polyether Nitrogen Included, High Functionality,Dimensional stability
NP-400 Special Polyethe
KR-6350 Special Polyethe Low Viscosity

2)Typical Properties and Physical Properties of Foam
Grade Color(APHA) OH No.
(mgKOH/g)
Total Amine No.
(Perchloric Acid Method)
Water(%) Viscosity
(50¡É, CPS)
NP-300 100max 730¡­770 373¡­403 0.2 max 1400¡­1800
NP-400 100max 680¡­720 405¡­435 0.2 max 6700¡­7100
KR-6350 100max 610¡­660 305¡­325 0.2 max 16000¡­20000
(25¡É, CPS)

3) Properties of Foam Produced by UsingCross-Linking Agents
ITEM Semi-Rigid Foam Rigid Foam
Typical
Foam
Formulation
(part by
weight)
GP-3000 80 75 GP-400 70
NP-400 20 25 NP-300 30
Water 1.0 1.0 Silicone surfactant 1.5
Triethylene Diamine 0.25 0.25 Freon-11 34
Silicone Á¤Æ÷Á¦ 1.0 1.0 C-MDI 126
Diethyl ethanol amine 0.5 0.5    
TDI-80(Index) 105 105    
Condition of Blowing Mixing Time(sec) 7 7 Mixing Time(sec) 5
Rising Time(sec) 70 60 Rising Time(sec) 95
Physical
Property
of Foam
Density(kg/§©) 71.1 68.4 Density(kg/§©) 30.0
Tensile strength(kg/§²) 1.23 1.57 Compression strength
Parallel
perpendicular
(kg/§²)
2.61
1.08
Elongation(%) 59 50
Tear strength(kg/§¯) 0.51 0.62
Indentation load (Kg/50in©÷)
25% Deflection
65% Deflection
45
118
51.5
210
Dimensional stability
70¡É 7days
110¡É 7days
+1.4
+4.02
Compression set(%)
70%Deflection 70¡É 22Hr
14.2 17.0 70¡É 95% RH 7days
-10¡É 7days
+6.2
+0.23