Functional polymers

Song, Zhongjiang; R�nby, Bengt; Gupta, Amitava; Borsig, Eberhard; Vogl, Otto

doi:10.1007/bf00275975

Cited by 13 publications

(2 citation statements)

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“…Some methods, such as surface coating,7, 8 surface film layers,9, 10 and antidegradation additives,11–13 have been used to impede the environmental degradation of thermosetting resins. Though some good results were gained,11–15 there is a limitation with these methods. Organic additives are easy to lose and less effective for thermosetting resins 11–13.…”

Section: Introductionmentioning

confidence: 99%

Degradation of nano ZnO‐glass fiber‐unsaturated polyester composites

Peng

Liu

Yang

et al. 2009

J of Applied Polymer Sci

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Degradation behavior of ZnO-glass fiber-unsaturated polyester composite under exposure to a metal halide lamp is investigated by means of DSC and FTIR. The FTIR results show that the UV photons can increase the carbonyl group on the surface, but ZnO can decrease the carbonyl content and further contribute to the breaking of single bond of carbon to oxygen on the surface. All of the results indicate that for pure unsaturated polyester under the UV exposure in air, the major reaction is photo-initiated oxidation, whereas for the composites with ZnO, decarbonylation is the major effect. In addition, when the content of ZnO is not higher than 4 wt %, the composites are still transparent, and its effects on the crosslinking process and thermal stability are insignificant. Thus, ZnO can be used as a stabilizer of unsaturated polyester for the glass fiber reinforced polymer industry.

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Section: Introductionmentioning

confidence: 99%

Degradation of nano ZnO‐glass fiber‐unsaturated polyester composites

Peng

Liu

Yang

et al. 2009

J of Applied Polymer Sci

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“…1 Recently, a number of polymerizable ultraviolet stabilizers of the 2(2-hydroxyphenyl)2H-benzotriazole family have been reported 2 -10 ; they include vinyl and isopropenyl derivatives, 2 -5 acrylates and methacrylates, 6 -8 and some methoxy derivatives. 9 • 10 Some of these compounds were incorporated into polymers by copolymerization; others, for example 2(2-hydroxy-4-vinyl pheny 1 )2H-benzotriazole (2H5V), by grafting [into polybutadiene 11 or onto the polymers with aliphatic carbon hydrogen bond such as polypropylene or poly-(methyl methacrylate) 12 ]; 2H5V was also incorporated into unsaturated polyesters 13 or other crosslinked polymers. 14 2H5V was shown to haye been placed firmly in the polymer matrix and remained in position even under severe degradation conditions.…”

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confidence: 99%

Functional Polymers XLV. Incorporation of Dihydroxy 2(2-Hydroxyphenyl) H-Benzotriazole Derivatives into Polyesters

Gomez

Vogl

1986

Polym J

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ABSTRACT:2(2,4-Dihydroxyphenyl)2H-4-hydroxybenzotriazole and 2(2,4-dihydroxyphenyl)2H-1,3-di(4-hydroxybenzotriazole) were incorporated in amounts of I to !Omol% into examples of typical aliphatic or aromatic polyesters, either by direct synthesis from the monomers or by transesterification from already prepared polyesters. The polyesters showed UV spectra typical for the 2(2-hydroxyphenyl)2H-benzotriazole unit in amounts approximately corresponding to the feed composition. Some complications in the direct incorporation of dihydroxy-2(2-hydroxyphenyl)2H-benzotriazoles into polyesters were encountered when the diacid chloride method was used for the preparation of the polyesters; branched and crosslinked polyesters were obtained.

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Synthèse, polymérisation et copolymérisation d'un dérivé 2h‐benzotriazolylphényl de l'acétate de vinyle

Camps

Monthéard

1988

Makromol. Chem.

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1 -(4-Acetoxy)-3-(2H-benzotriazolylphenyl)vinyl acetate (4) was synthesized. The polymerization of 4 afforded polymer 5 with a relatively low molecular weight (= 2000). Copolymerizations of 4 (3,7 wt.-Vo) were carried out with styrene and methyl methacrylate to copolymers 6 and 7, respectively. Polymer 5 and copolymers 6 and 7 were characterized by I H and I3C NMR and by IR and UV spectroscopy. Their UV spectra show a strong absorption in the near UV spectrum. 4 may thus be considered as a potential comonomer for UV protection.

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Functional polymers

Cited by 13 publications

References 0 publications

Degradation of nano ZnO‐glass fiber‐unsaturated polyester composites

Degradation of nano ZnO‐glass fiber‐unsaturated polyester composites

Functional Polymers XLV. Incorporation of Dihydroxy 2(2-Hydroxyphenyl) H-Benzotriazole Derivatives into Polyesters

Synthèse, polymérisation et copolymérisation d'un dérivé 2h‐benzotriazolylphényl de l'acétate de vinyle

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