Guangdong Guyan Electronic Material Company
TECHNICAL DATA SHEET(TDS)
GY100A-U
DESCRIPTION
            GY 100A-U is intended for use as a latent accelerator for the dicyandiamide cure of epoxy resins. It belong to an aromatic substituted urea compound without halogen element. The addition of GY 100A-U to epoxy/dicyandiamide formulations reduces the time and/or temperature required to cure these shelf stable one part products. GY 100A-U Provides the greatest degree of acceleration to epoxy/dicyandiamide formulations. Suggested use levels of GY 100A-U are ≤5 phr. Curing can be accomplished in about 36 minutes at 100℃ and in less than 4 minutes at temperatures≥140℃.Cure times are dependent on the composition of the formulated product and the particular end application. Room temperature(25℃) shelf lives(time to double viscosity)of >3 months can be obtained when≤ 1 phr is used with epoxy/ dicyandiamide. Some of the factors can effect shelf life including formulation ingredients and production process. Insoluble ingredients to GY 100A-U is suitable for prolonging shelf lives. The most significant advantage of GY 100A-U is rapid cure as a latent accelerator. The cured product is shiny, yellowish and semitransparent.

APPLICATIONS
As a latent accelerator in the dicyandiamide cure of
epoxy resins used in:
        Adhesives
        Coatings(liquid or powder)
        Encapsulations
        Reinforcements
        prepreg

TYPICAL PROPERTIES
Appearance                  Powder
Color                          white
Odor                          almost none
Melting Point,℃       180
Particle size,d90       10um
Solubility(100A-U/solvent;w/w):
methanol(100/1000);
ethanol(100/1000);
1,2-ethandiol(60/1000);
DMSO(350/1000);
benzyl alcohol(350/1000);
2-methoxyethanol(350/1000);
DMF(500/1000)

HEALTH＆SAFETY PRECAUTIONS
         GY 100A-U is a micro powder. It will cause respiratory irritation with prolonged dust inhalation. It’s necessary to wear goggle and mask in the process of production and transportation. The dust explosion may be caused if it is dispersed into the air.

PACKAGING
Paper carton(net weight 10KG)
                                   Accelerated epoxy/dicyandiamide

FORMULATION, pbw		A	B	C
Epoxy resin(EEW:190)		100	100	100
dicyandiamide		8	8	8
fumed silica		1	1	1
GY 100A-U		1	3	5
Shelf Life(25℃)
Time to double viscosity,weeks		12	9	7
Curing time,min./ ℃	100	60	40	36
	110	30	20	18
	120	22	15	12
	130	10	8	7
	140	7	5	4
Tg,℃		134	127	117

DISCLAIMER

The above information is believed to be reliable , but it’s only based on our laboratory results. No representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results. All customer assumes all risk and liability of any use.