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2019-08-29 07:47
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Company Profile
Gloriaful Industry Co., LimitedBy certification [File Integrity]
Contact: seogoogle(Mr.)
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Area: Beijing
Address: Beijing
Website: http://www.glorisochem.com/ http://seogoogle.jnyjgm.com/
IDENTIFICATION
Chemical name: N, N"-(4-methyl-1,3-phenylene)bis [N',N'- dimethylurea] 80% N, N''-(methyl-m-phenylene)bis [N', N'-dimethylurea] 20%
Synonym: mixed isomers of 80/20 Toluene Bis Dimethyl Urea; Dyhard UR500; TDI URON; Omicure U-410
CAS Number: 17526-94-2, 26604-41-1
Structure formula:
A highly active accelerator for thermosetting epoxy curing systems, while still with latency based on substituted urea , greatly promote highly blocked hardeners of DICY during epoxy curing process.
SPECIFICATION
Appearance |
White powder |
Assay |
Min. 95% |
Melting point |
Min . 180℃ |
Particle size 98.0% |
Max. 10 μm |
Volatiles |
Max. 1.0% |
APPLICATION
UR500 provides the most reactive acceleration to epoxy/dicyandiamide formulations:
★ Prepregs for composites e.g. wind power, automotive, marine engineering and aerospace industry
★ Encapsulation materials for electronic industry
★ Powder coatings for chemical-resistance
★ Reinforcements for car, ship industry
UR500 can be a sole curing agent for thermosetting epoxy formulation without dicyandiamide hardener:
★ Prepregs for composites with low enthalpy development
★ Laminates of thick layers
ADVANTAGES
The highest reactivity among the whole series of UR urea accelerators
Latency of 2 months still can be obtained
More environmental friendly for our green earth
Ideal ability of using alone as a curing agent
Highly activity of UR500 makes a fast curing process even under the temperature low at 80°C, while causes less effect on Tg. When controlling the percentage of adding of UR500, Shelf life still exceed 3 month. Mixed isomers maintaining functions bring the costs less expensive. No irritation &low toxicity help UR500 to in a popular and brighter prospect.
FORMULATION CASES
Formulation |
1 |
2 |
3 |
UR500 |
1.0 phr |
3.0 phr |
8.0phr |
Dicyandiamide Micronized |
6.5 phr |
6.5 phr |
|
Liquid bisphenol-A-epoxy resin |
100 phr |
100 phr |
100 phr |
DSC –Onset [°C] |
143 |
138 |
150 |
DSC –Tg [°C] |
150 |
142 |
98 |
Gel time 140°C [min] |
4 |
3 |
14 |
Shelf life (double viscosity) at 23°C [days] |
70 |
60 |
60 |
Result values may be varied based on different used resin matrix.
Fillers and other additives to formulation can also change properties.
Packing and storage
--10 or 15kg per Box,carton,kraft bags, FIBC or customized
--Keep sealed in original package ,under a cool and dry condition ,avoid humidity. recommended storage period no exceeds 12 months.
For further information about UR500 ,please leave a message and we will get you prompt response
http://www.glorisochem.com/