Rigid Manually Operating Process Polyol Mixture PU Foam Insulation for Solar Water Heaters

• Molecular Principal Chain: Naphthenic Polymer
• Color: Brown
• Viscosity 25ºC,MPa.S: 400±50
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: DFR21
• Hydroxy Value Mgkoh/G: 380-20
• Specific Gravity 25ºC: 1.1±0.5
• Component Temperature: 20-23ºC
• Transport Package: Steel Drum/IBC Drum/Tank
• Specification: pure
• Trademark: G-TECH@
• Origin: China
• Production Capacity: 50000mt/Year
• Package Size: 60.00cm * 60.00cm * 102.00cm
• Package Gross Weight: 218.000kg

Product Description

Rigid Manually operating process Polyol Mixture PU Foam Insulation for solar water heaters 

1.General description
DFR21 is a semi resin premix combined polyol, based on polyether polyol, formulated with catalyst,blowing agent,stabilizing agents and other additves(if necessary) according to a parameter.It is a fully formulated polyether polyol developed for the rigid insulation of solar water heaters.It is the mixture of polyol.

2.Technical Quality Conditions:
2.1 Physical characteristics
                                                         
Item                  Unit                    Index
                                                         
Appearance                     light yellow transparent liquid
Viscosity           25ºC,mPa.S               400±50
Hydroxy Value       mgKOH/g                 380±20
Specific gravity         25ºC                  1.1±0.05
                                                          

2.2 Process and reactive characteristics( actual value varied depends on the processing conditions)
2.3.1 Foaming condition
2.3.1.1 Manual mixing
Component temperature:28-30ºC

2.3.1.3 Recommended processing property
                                                    
Item             Unit                 Manual Mixing                                                                         
                                                    
cream time        (S)                 /                      
gel time           (S)                 /                    
tack-free time      (S)                 /                    
free rise density   (kg/M3)              /       
                                                    
Note: ratio varied depends on processing system

2.4 Recommended ratio:

Component	Part by weight
Blend polyol	100
MDI	100-120

 
2.5 Foam characteristics

ITEM			PROPERTY
Apparent core density (kg/m3)                         ≥			/
Initial Thermal conductivity (W/m.k)                     ≤			/
Compressive strength                                 ≥			/
Closed-cell rate  (%)                                 ≥			/
water absorption  (V/V) %                            ≤			/
Dimensional stability(%)	Low temperature (-30±3ºC,24hs)	≤	/
	High temperature (100±3ºC,48hs)	≤	/
Moisture vapour transmission 38ºC,RHO-88%	Ng/Pa.m.s	≤	/

3. Main Applications:
rigid PU foam cores for insulation of water heaters in combination with isocyanate (MDI).