Effect of surface modified Sb2O3 on properties of flame⁃retardant ABS/DBDPE/ Sb2O3 composites

doi:10.19491/j.issn.1001-9278.2025.03.015

Abstract

Abstract:

Four surface modifiers， NDZ⁃201， GR⁃A118， KH⁃550 and DPAK， were used to modify Sb₂O₃ particles by wet ball milling. The structure and morphology of Sb₂O₃ before and after modification were characterized by FTIR， XRD and SEM. ABS/DBDPE/Sb₂O₃ composite was prepared by extrusion granulation and injection molding. The effect of Sb₂O₃ modified by four surface modifiers of 2 % on the composite properties was studied. The results show that Sb₂O₃ modified by four surface modifiers has a certain effect on the comprehensive properties of the composite. After surface modification， the machinability of the composite is obviously improved. After modification， good flame retardancy and thermal properties are maintained， and all vertical combustion passes the UL 94 V⁃0 grade. After modification， the mechanical properties are improved in different degrees， and the impact properties are improved obviously. The NDZ⁃201⁃modified composite presented impact strength of 46.99 kJ/m². This result is 36.01 % higher than the impact strength of unmodified composite. Moreover， the bending strength of the modified composite was also improved to some extent. NDZ⁃201 and DPAK exhibit good modification effect， facilitating an improvement in the machining and mechanical properties of composites.

Key words: acrylonitrile?butadiene?styrene resin, surface modification modified, antimony trioxide, flame retardant property

CLC Number:

TQ325.2

WU Benze, LI Bin, LEI Yuan, HUANG Shaojun, LYU Wenjun, YU Chuanbai. Effect of surface modified Sb₂O₃ on properties of flame⁃retardant ABS/DBDPE/ Sb₂O₃ composites[J]. China Plastics, 2025, 39(3): 81-85.

Figures/Tables 9

样品名称	ABS含量/g	DBDPE含量/g	改性Sb₂O₃含量/g		抗滴落含量剂/g
样品名称	ABS含量/g	DBDPE含量/g	用量	偶联剂种类	抗滴落含量剂/g
D/S/ABS	87	8	4	未改性	0.3
D/K⁃S/ABS	87	8	4	KH⁃550	0.3
D/N⁃S/ABS	87	8	4	NDZ⁃201	0.3
D/G⁃S/ABS	87	8	4	GR⁃A118	0.3
D/D⁃S/ABS	87	8	4	DPAK	0.3

Tab.1. Formula sheet for ABS/DBDPE/ modified Sb2O3

Fig.1. FTIR （a） and XRD （b） spectra of Sb2O3 particles before and after modification

Fig.2. Sb2O3 particle activation index （a） and SEM images ［（b）、（c）］ before and after modification

Fig.3. TG （a） and DTG curves （b） of Sb2O3 particles before and after modification

Fig.4. Melt flow rate of flame retardant ABS composite before and after modification

Fig.5. Mechanical properties of ABS composites and SEM images of the impact section

Fig.6. DMA curves of flame retardant ABS composites

样品	UL 94等级	极限氧指数/%	有无熔滴
D/S/ABS	V⁃0	22.5	无
D/K⁃S/ABS	V⁃0	22.7	无
D/N⁃S/ABS	V⁃0	22.3	无
D/G⁃S/ABS	V⁃0	22.4	无
D/D⁃S/ABS	V⁃0	22.1	无

Tab.2. Flame retardant properties of ABS composite materials

样品	热变形温度/℃	维卡温度/℃
D/S/ABS	79.7	98.6
D/K⁃S/ABS	79.2	99.2
D/N⁃S/ABS	80.1	97.9
D/G⁃S/ABS	78.1	98.3
D/D⁃S/ABS	78.0	98.1

Tab.3. Thermal deformation temperature and softening point of ABS composite materials

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Effect of surface modified Sb₂O₃ on properties of flame⁃retardant ABS/DBDPE/ Sb₂O₃ composites

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