Preparation and Properties of Fluorine Modified UV Curing Six-Arm Flame Retardant Polyurethane
Received date: 2019-05-29
Revised date: 2019-10-15
Online published: 2019-12-01
Trifluorooctyl octanol（TEOH-6）， isophorone diisocyanate（IPDI）， triethano-lamine（TEOA）and hexachlorocyclotriphosphonate were used to prepare fluorine-containing diol（DE-TEOH）. A six-arm flame retardant monomer was synthesized by using p-hydroxybenzaldehyde and sodium borohydride. Isophorone diisocyanate（IPDI）， polycarbonate diol（PCDL）dimethylolpropionic acid（DMPA），fluorine-containing diol（DE-TEOH），pentaerythritol triacrylate（PETA）were used as the main raw material to synthesis —NCO semi-capped linearpolyurethane. Then the six-arm flame retardant monomer was added into the polyurethanesystem and the fluorine，nitrogen and phosphorus composite modified water-based UV-curing six-arm flame retardant polyurethane（UV-WFPU）was made by a soap-free reverse emulsificationprocess. The structure of UV-WFPU was characterized by IR and 1H NMR，and the propertiesof the film were studied. The effect of amount of fluorine-containing diol and incorporation ofsix-arm flame-retardant monomer on the structure and performance of the film wasinvestigated. The results showed that compared with the traditional polyurethane，the incorporation of six-arm flame retardant monomer could greatly improve the flame retardantperformance of the film，and the limiting oxygen index（LOI）was increased by 45%. With the increasing of DE-TEOH，the water absorption rate of the film was descreased and the contactangle and the thermal stability were increased.
CHEN Kun , TAO Ba-Mang , HU Xu-Can , LIU Jing , LIU Jia-Cheng . Preparation and Properties of Fluorine Modified UV Curing Six-Arm Flame Retardant Polyurethane[J]. Paint & Coatings Industry, 2019 , 49(12) : 1 -8 . DOI: 10.12020/j.issn.0253-4312.2019.12.1
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