Rigid Polyurethane Foam PUR System Polyether Polyol for Sandwich Panel Insulation

• Molecular Principal Chain: Naphthenic Polymer
• Color: Brown
• Appearance: Light Yellow Transparent Viscous Liquid
• 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.: LYR1721
• Hydroxyl Value Mgkoh/G: 500-800
• Dynamic Viscosity (25ºC) MPa.S: 400-500
• Density (20ºC) G/Ml: 1.1±0.02
• Storage Temperature ºC: 10-25
• 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

DESCRIPTION
LYR1721 is a formulated polyol consisting of,surfactants,catalysts,fire retardant and CFC free blowing agent.The polyol offers increased resistance to burning and spread of flames.The polyol blend is specifically developed as one part of a two components system for rigid polyurethane insulated pannel with continuous process.
It is widely used in manufacture of composite board,sandwich panel,inorganic panel applied for door,wall,roofing,air condition duct and so on.
Panels manufactured with LYR1721 system will display higher degree of compression and tensile strength in addition to its thermal and Eco-Efficiency performance.The higher percentage of closed cell is considered excellent barrier for air,water and noise.
PHYSICAL and CHEMICAL PROPERTIES    

	POLYOL	ISOCYANATE	Test Method
Apperance	Clear amber liquid	Dark brown viscous liquid
Viscosity@20ºC	500-800cps	170-230cps	ASTM D 445
Specific gravity@20ºC	1.11±0.01gm/cc	1.23±0.01gm/cc	ASTM D 891
OH content	400±50 mgKOH/g		ASTM 4274
NCO		30-32%	ASTM D 5155
Mixing Ratio	100	100-110

RECOMMENDED PROCESS CONDITIONS
System temperature:20±2ºC
Compoment temperature:22±2ºC
Mould temperature:30-35ºC
TYPICAL FORM PERFORMANCE                   

Testing items	Test method		Index
	Chinese standard	Referance Standard
Closed-cell rate (%)  ≥	GB/T10799-2008	ISO 4590:2002	90
Core density,kg/m3  ≥	GB/T 26689-2011		35
Initial Thermal conductivity (W/m.k)       ≤	GB/T 10295-1988	ISO 8301:1991(E)	0.023
Compressive strength,mpa     ≥	GB/T 8813-2008	ISO 844:1978	130
Dimensional stability (%)	GB/T 8811-2008	ISO 2796:1980	2
48h  70°C     ≤
48h  -30°C    ≤			1.5

BURNING CHARACTERISTICS           

Self extinguishing to (DIN-4102)

Classification-B1,B2,B3

HANDLING and STORAGE               
LYR1721 Polyol and PU systems should be stored at room temperature below 25ºC in sealed drums.Agitate contents before use particularly after long standing.Precautions should be observed to avoid prolonged or repeated skin contact with the products or its introduction in or near to the eyes.If skin contact occurs all contaminated clothing should be removed and the effected skin area wiped with a cloth or paper towels saturated with ethanol or equivalent solvent followed by washing with soap and water.Goggle or eye shields should be worn when there is a danger of splashing or eye contact.With the exercise of such care LYR1721 System should not present any undue hazard to health under normal working conditions(Protective clothing and eye protection is recommended when handling Polyol).