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微胶囊红磷阻燃剂在低密度聚乙烯材料中的应用研究 总被引:5,自引:1,他引:5
研究了微胶囊红磷不同包覆、用量、粒径及与其它阻燃剂的协效作用等因素对低密度聚乙烯(LDPE)材料的阻燃性、力学性能及抑烟性能的影响。蜜胺树脂囊材包覆与蜜胺树脂/硼酸锌双层囊材包覆微胶囊红磷在聚乙烯(PE)中的阻燃性最好;8phr的微胶囊红磷添加量即可使材料的阻燃性能达UL 94V-0级,极限氧指数(LOI)从17.4%上升到22.5%;在添加量范围内对材料的力学性能影响很小;二元体系中,微胶囊红磷/氢氧化铝,微胶囊红磷/氢氧化镁与微胶囊红磷/硼酸锌复配具有良好的阻燃协效作用,协效指数分别为1.6、1.4和2.3,微胶囊红磷/硼酸锌二元复合体系有良好的抑烟协效作用,三元体系中,微胶囊红磷/硼酸锌/十溴联苯醚、微胶囊红磷/氢氧化铝/氢氧化镁和微胶囊红磷/硼酸锌/三聚氰胺体系有很好的阻燃协效作用,协效指数分别为2.6、2.1与2.0。 相似文献
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微胶囊化红磷阻燃剂的研制及应用 总被引:2,自引:0,他引:2
论述了红磷包覆的必要性及包覆方法。分别采用酚醛树脂、脲醋树脂对红磷进行微胶囊化,检测了红磷包覆前后PH3的释放量,研究微胶囊化红磷对MC-尼龙的阻燃性能。 相似文献
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微胶囊红磷阻燃剂的研究进展 总被引:5,自引:0,他引:5
介绍了红磷阻燃剂的基本特性与应用及微胶囊化技术,研究了微胶囊化技术在红磷阻燃剂中的应用,探讨了微胶囊红磷阻燃剂目前所存在的优化包覆、白度、粒度、复配协效、相容性、消烟抑烟、多功能化以及阻燃抑烟机理等问题.综述了微胶囊红磷阻燃剂的国内外研究进展情况.提出了多功能化、超细化、白度化、复配协效、消烟技术等研究方向. 相似文献
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微胶囊红磷阻燃剂在软质聚氨酯泡沫塑料中的应用研究 总被引:13,自引:0,他引:13
研究了微胶囊红磷不同包覆、用量、粒度及与其它阻燃剂的协效作用等因素对软质聚氨酯泡沫塑料的阻燃性能、力学性能及抑烟性能的影响。三聚氰胺~甲醛树脂/硼酸锌双层囊材包覆微胶囊红磷在聚氨酯中的阻燃性最好;3份的微胶囊红磷添加量即可使材料的阻燃性能达UL94V-0级,氧指数(LOI)从17.7%上升到28.8%;在适当的添加量范围内对材料的力学性能影响很小;粒径的逐渐减小,材料氧指数值逐渐增大,阻燃性提高,拉伸强度和伸长率随粒径增大而略有降低;二元体系中,微胶囊红磷/硼酸锌与微胶囊红磷/十溴联苯醚复配具有很好的阻燃协效作用,协效指数分别为2.4和1.4,三元体系中,微胶囊红磷/韧弭酸锌什溴联苯醚体系有很好的阻燃协效作用,协效指数为1.6,LOI为34.9%。 相似文献
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微胶囊红磷在软质PVC电缆料的应用研究 总被引:3,自引:0,他引:3
研究了微胶囊红磷不同包覆、用量、粒径及与其他阻燃剂的协效作用等因素对软质聚氯乙烯(PVC)电缆料的阻燃性能、力学性能及抑烟性能的影响。蜜胺树脂/硼酸锌双层囊材包覆微胶囊红磷在PVC中的阻燃性最好;6份的微胶囊红磷添加量即可使材料的阻燃性能达UL94 V-0级。随着微胶囊红磷颗粒粒径减小,材料氧指数增大,阻燃性提高,拉伸强度和断裂伸长率有所提高。二元体系中,微胶囊红磷/氢氧化铝、微胶囊红磷/氢氧化镁和微胶囊红磷/硼酸锌复配具有良好的阻燃协效作用。微胶囊红磷/三氧化钼、微胶囊红磷/二茂铁二元复合体系对PVC有明显的抑烟作用,最大烟密度(有焰)分别下降为62.9和144.9。微胶囊红磷/硼酸锌二元复合体系有良好的抑烟协效作用。微胶囊红磷/硼酸锌/十溴联苯醚和微胶囊红磷/氢氧化铝/氢氧化镁三元复合体系有很好的阻燃和抑烟协效作用。 相似文献
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本文分别介绍了卤系阻燃剂、磷系阻燃剂、硅系阻燃剂和氮系阻燃剂,从机理上分析各类阻燃剂的阻燃效果、应用效果,并指出无卤高效环保型阻燃剂的研究是今后发展方向。 相似文献
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Chin-Hsing Chen 《Polymer-Plastics Technology and Engineering》2019,58(3):316-327
One kind of microencapsulated flame retardant containing melamine polyphosphate(MPP) and hydrophobic resin layer as core and shell material was synthesized by in situ polymerization technology. The structures and properties of microencapsulated MPP were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and water contact angle. Thermal behaviors of the composites containing microencapsulated MPP were analyzed by thermogravimetric analysis. Flame retardant tests indicated that the microencapsulated MPP with the polymer resin led to an improvement of the hydrophobicity. Results revealed that the flame retardancy of the composites was improved at the same fillers loading through the microencapsulation technology, which the char yields reached (~26.9wt%) and flame retardance grade (LOI-38%) with optimized MPP addition (~40%) to polymer matrix. 相似文献
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微胶囊化红磷阻燃剂的应用 总被引:3,自引:0,他引:3
详细介绍了微胶囊化红磷阻燃剂的性能及其在聚丙烯、不饱和聚酯、环氧树脂、硬质聚氨酯泡沫、聚乙烯、聚酰胺等高分子树脂中的应用配方,并说明了微胶囊化红磷阻燃母料的制备过程. 相似文献
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A novel double-layered microencapsulated red phosphorus (DMRP) has been prepared through chemical precipitation of aluminum trihydrate (ATH) and in situ polymerization of melamine formaldehyde (MF) resin on the red phosphorus (RP) powder surface, and its structure was characterized by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The influence of DMRP on flame retardance and thermal stability of poly(lactic acid) (PLA) was thoroughly investigated by means of X-ray diffractometry (XRD), limiting oxygen index (LOI), vertical burning test, and thermogravimetric analysis (TGA). With an optimum mass ratio of RP/ATH/MF = 72.25%/12.75%/15%, it has been found that PLA with the addition of DMRP at 25 wt % loading level shows good flame retardance compared to plain RP as well as the conventional microencapsulated red phosphorus (CMRP), and can achieve UL94 V-0 rating along with an LOI increase from 20.5 to 29.3. The TGA and XRD studies indicate that the interaction occurs among all three components: RP, ATH, and MF resin. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
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磷系阻燃剂现状与展望 总被引:17,自引:0,他引:17
综述了磷系阻燃剂最近几年的发展状况,全面介绍了这几年开发研制成功的磷系阻燃剂,并介绍了它们的合成方法及其应用,最后展望了磷系阻燃剂的发展方向。 相似文献
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Design and characteristic analysis of a new nozzle for preparing microencapsulated particles by RESS
Ya-qing Liu Xiao-ying Li Fa-xing Zhang You-yi Sun Gui-zhe Zhao 《Journal of Coatings Technology and Research》2009,6(3):377-382
A new nozzle was designed for the technology of making microencapsulated particles by rapid expansion of supercritical solution
(RESS). The design is based on the theory of gas dynamics in which the potential energy of high stagnation pressure is converted
totally into effective velocity energy. Therefore, a high momentum of the exit jet can be obtained for improving the capability
of removing molten debris quickly. Furthermore, the microencapsulated red phosphorus particles were prepared by RESS with
the new nozzle, and the structure and property of the microencapsulated red phosphorus particles were characterized by the
SEM images, droplet concentration distributions, and moisture absorption ratio. The results show that the process can effectively
encapsulate the red phosphorus particles with the paraffin. 相似文献