JapaneseChinese

Technical Information adhesive

Use in adhesive applications Use of DURANOL™ allows you to obtain a polyurethane adhesive with excellent moisture heat resistance, hydrolysis resistance, and flexibility. DURANOL™ is used in a wide range of fields such as various structural materials, electronic materials, and general industries.

Hydrolysis resistance of DURANOL™

It can be seen that PCD polyurethanes are hard to decompose when compared to polyether urethanes and polyester urethanes.

Change in the molecular weight of a polyurethane film immersed in hot water at a temperature of 100°C
Change in the molecular weight of a polyurethane film immersed in hot water at a temperature of 100°C
Zoom

[Polyurethane formulation] MDI/Polyol/1,4-BDO=2/1/1

Heat resistance of DURANOL™

PCD polyurethanes show high strength retention even after storage at a high temperature.

Change in the property of a polyurethane film stored at 120°C
Change in the property of a polyurethane film stored at 120°C
Zoom

[Polyurethane formulation] H12MDI/Polyol/IPDA=2/1/1

Chemical resistance of DURANOL™

It can be seen that PCD polyurethanes have a smaller swelling rate due to organic solvent when compared to polyether urethanes and polyester urethanes and copolymerized type DURANOL™ has an excellent swelling rate in particular.

Change in the property of a polyurethane film immersed in oleic acid (23°C) for 1 week
Change in the property of a polyurethane film immersed in oleic acid (23°C) for 1 week
Zoom

[Polyurethane formulation] MDI/Polyol/1,4-BDO=2/1/1

Flexibility of DURANOL™

Generally, although PCD polyurethane tends to lack flexibility, use of liquid type DURANOL™ allows improvement of flexibility.

Tensile test of polyurethane
デュラノール™の柔軟性
Zoom

[Measurement condition]
Polyurethane formulation: MDI / Polyol / 1, 4 - BDO = 2 / 1 / 1
Condition: According to JIS K7311
Test piece: 2 mm × 60 mm strip
Measuring instrument: TENSILON tensile testing machine

Compatibility of DURANOL™ and other polyols

Generally, DURANOL™ has a good compatibility with polyester polyols.
In the case of acrylic polyols, the compatibility depends on their types.

Polyol PCD Polyol:PCD
9 : 1 7 : 3 5 : 5 3 : 7 1 : 9
Polybutylene adipate
(Polyester polyol)
T5650J good good good good good
T5652 good good good good good
G4672 good good good good good
G3452 good good good good good
T4692 good good good good good
Acrylic polyol T5650J good good goodfair fair fair
T5652 fair poor poor poor fairpoor
G4672 fair poor poor poor fairpoor
Polytetramethylene glycol
(Polyether polyol)
T5650J goodfair poor poor poor good
T5652 poor poor poor poor fair
G4672 fairpoor poor poor poor fair
[Judgment] good: Transparent, fair: Uniform but with turbidity, poor: Separation (Temperature: 60±3°C)


旭化成 アルミペーストAsahi KASEI DURANATE™Asahi KASEI SB latex

To top