Blend Polyol / ISOCYANATE

Product Overview

Description

 

High Resilience Polyurethane Foam Systems (Full-MDI Series)

DHR-A/DHR-B

Product Introduction

DHR-A (Part A) adopts all water technology, it consists of hyperactivity polyether polyol and POP, crossing linking agent, foaming agent, flame retardant and compound catalyst etc. It reacts with isocyanate DHR-B(compound B), adopting cold moulding technology HR to make cold curing polyurethane foam, which has good mechanism(high resilence, low lag loss) and high compress and load ratio(sag factor). So it has excellent comfortable for seating touch, good anti-fatigue property, feel as latex surface,nice air permeability and flame retardant performance with high productivity, low power, which widely applies to autocar, autobicycle, train, airplane, furniture etc., which applies to saddles, backrest, mattresses and pillow etc.    

Typical properties

	Part A DHR-A(blend polyol)	Part B DHR-B(Isocyanate)
Appearance	Milk white viscous liquid	Dark brown transparent liquid
Hydroxyl value        mgKOH/g	45±10	/
Dynamic viscosity(25℃)mpa.s	1200±200	10±5
Density(20℃)           g/ml	1.05±0.05	1.22±0.05
Storage temperature         ℃	15-25	15-25
Pot life                 month	6	12

Reactivity Property(Material Temperature is 20℃)

	Manual	Machine
Cream time                 s	8—15	6—12
Gel time                    s	50—70	40—60
Mould temperature          ℃	35—55	35—55
Demould time             min	6	5—6

Typical foam performance

Physical properties		Unit	Standard	Test result
Ratio(DHR-A/DHR-B)		-	-	1/0.6	1/0.65	1/0.7
Core density		Kg/m3	40--60	51	50.2	50.1
Rebound		%	≥50	59	58	58
Tensile Strength		KPa	≥100	230	227	226
Elongation at break		%	≥100	120.3	118	111
Tear Strength		N/cm	≥2.0	4.12	4.05	4.02
75% compression set (70℃,22h)		%		8.1	8.3	8.7
Indentation Load Deflection	At 25%	kgf	-	14.4	17.3	20.5
	At 65%	kgf	-	44.8	52.2	59.9
	Sag ratio	-	≥2.6	3.11	3.02	2.92