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在聚苯硫醚(PPS)树脂基体中引入聚酰胺66(PA66),随着PA66含量增加,PPS/PA66共混物的拉伸强度和弯曲强度逐渐下降,结合PPS/PA66共混物的相形貌分析,提出了通过玻璃纤维(GF)的引入,制备具有互锁结构的PPS/PA66/GF三元体系复合材料,达到同时提高复合材料的强度、刚度及韧性的目的。分别考察了短玻璃纤维(SGF)和中长玻璃纤维(LGF)增强PPS/PA66的综合性能。结果表明,GF的引入显著提高了共混物的力学性能,同时,PPS/PA66/SGF和PPS/PA66/LGF复合材料的扫描电子显微镜和动态力学性能分析都表明共混物内部形成了一个高度互锁的结构。 相似文献
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镁离子改性MPP对玻璃纤维增强聚酰胺66的阻燃研究 总被引:1,自引:0,他引:1
研究了三聚氰胺聚磷酸盐(MPP)和镁离子改性三聚氰胺聚磷酸盐(Mg-MPP)分别对玻璃纤维增强聚酰胺66(PA66)的阻燃效果、热降解行为以及力学性能的影响。结果表明,在相同添加量的情况下,添加Mg-MPP比添加加PP有着更高的阻燃效率,氧指数提高了近16%。同时还提高了材料的热稳定性,起始分解温度提高26.5℃,残炭量增加。此外,Mg—MPP阻燃玻璃纤维增强PA66的力学性能明显优于MPP阻燃玻璃纤维增强PA66,其拉伸强度、弯曲强度和悬臂梁缺口冲击强度分别比后者提高了11.8%、6.5%和18.5%。 相似文献
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选取不同短切玻璃纤维(SGF)含量的聚酰胺66(PA66)/SGF复合材料,研究对比PA66/SGF复合材料与热固性环氧树脂基绝缘材料的物理性能、力学性能和绝缘性能。结果表明,随着SGF含量的增加,PA66/SGF复合材料的密度增大,但均低于热固性环氧树脂基绝缘材料标准;弯曲强度、拉伸强度和冲击强度增大,当SGF含量达到20 %以上时,复合材料的综合力学性能达到热固性环氧树脂基绝缘材料标准;击穿强度和耐电弧时间增加,优于热固性环氧树脂基绝缘材料标准。因此,PA66/SGF复合材料作为高压开关设备绝缘件材料是可行的,但实际应用还需进一步的工程应用研究。 相似文献
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浸润剂对短切玻纤增强尼龙66性能影响的研究 总被引:2,自引:0,他引:2
利用双螺杆挤出机制备短玻纤增强尼龙66(GF/PA66)复合材料,采用不同组成的浸润剂处理玻璃纤维,研究其对GF/PA66的微观结构及性能的影响。结果表明,在T435D中加入乙烯基树脂或三聚氰胺后,玻纤增强尼龙66复合材料的拉伸强度、弯曲强度、简支梁冲击强度均有不同程度的提高,并通过扫描电镜观察到PA66基体与玻纤相界面的微观结构在一定程度上得到了改善,但在T435D中加入三聚氰胺在三种浸润剂配方中效果最佳。 相似文献
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为提高三聚氰胺聚磷酸盐(MPP)和二乙基次膦酸盐(OP)协效阻燃玻纤(GF)增强尼龙66(PA66)的综合性能,引入少量的无机阻燃剂硼酸锌(ZB)作为协效剂,系统研究了不同添加量的ZB对阻燃材料的阻燃性能、热稳定性、力学性能和白度的影响。结果表明,当MPP和OP的总添加量为15%,复配0.5%的ZB时,阻燃GF增强PA66的垂直燃烧阻燃等级达到UL94 V–0级,且热释放总量由MPP/OP体系的15.4 k J/g降为13.7 k J/g;ZB的引入促进了连续、致密炭层的形成,增强了凝聚相阻燃;ZB增强了阻燃材料的热稳定性,ZB复配量为1.0%的阻燃材料的初始降解温度提高到了301℃,有效避免了加工过程中的降解;当ZB添加量为1.0%时,阻燃材料的拉伸强度和缺口冲击强度分别为100.9 MPa和4.22 k J/m~2,均优于未添加阻燃剂的纯GF增强PA66;同时,样品的白度得到了明显提升,有利于阻燃GF增强PA66的工业化应用。 相似文献
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玻纤增强PA66复合材料的耐乙二醇性能研究 总被引:1,自引:1,他引:1
研究了玻璃纤维(GF)、乙二醇对PA66/GF复合材料性能和微观结构的影响。结果表明:GF质量分数为30%~40%时,复合材料的综合力学性能最佳;GF-2在型号为10IL的尼龙66(PA66)中分散效果好,增强性能显著;乙二醇浸泡后复合材料的拉伸强度、模量等下降50%以上,冲击强度提高;GF的存在一定程度上提高了复合材卡斗在乙二醇浸泡后力学性能的保持率。SEM观察表明:乙二醇对复合材料的破坏主要表现为乙二醇对PA66基体的增塑作用和对PA66/GF界面层的破坏作用。 相似文献
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将表面处理后的空心玻璃微珠(t-HGS)加入到玻璃纤维(GF)增强尼龙66(PA66)体系中,对不同用量t-HGS/GF/PA66复合材料的力学性能及密度进行研究。结果表明:当添加10份t-HGS和30份GF时,t-HGS/GF/PA66复合材料的拉伸强度、弯曲模量和缺口冲击强度分别为170.92 MPa,8.92 GPa和9.21 kJ/m~2,力学性能最优;而t-HGS/GF/PA66复合材料的密度随t-HGS用量的增加而降低;用该材料制备的汽车制件相比普通制件减重9.1%,轻量化效果显著,且该材料的力学性能完全满足汽车行业标准。 相似文献
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《塑料工业》2019,(10)
选择双螺杆挤出机来制备以尼龙(PA)6T/66与PA10T为基础的玻璃纤维(GF)增强复合材料,分析马来酸酐接枝聚烯烃弹性体(POE-g-MAH)增韧剂对PA复合材料的力学特性改变作用。研究结果表明:将POE-g-MAH加入含20%GF的PA66复合材料基体后,试样的弯曲、拉伸强度以及弯曲弹性模量都发生了减小;对于含GF为20%的PA10T,弯曲弹性模量逐渐减小,拉伸与弯曲强度则先增大后减小。在加入了5%POE-g-MAH的复合材料断面中,出现了较多数量的褶皱,POE-g-MAH能够使GF和PA6T/66之间形成更良好的界面结合性能,显著提高界面相容性。加入偶联剂会导致PA6T/66体系力学性能的明显改善。加入POE-g-MAH可以改善树脂的界面相容性能,提高GF和树脂的结合强度。 相似文献
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Based on previous work, 70 vol % PA66/30 vol % PPS blend was selected as a matrix, and the PA66/PPS blend reinforced with different content of glass fiber (GF) was prepared in this study. The mechanical properties of PA66/PPS/GF composites were studied, and the tribological behaviors were tested on block‐on‐ring sliding wear tester. The results showed that 20–30 vol % GF greatly increases the mechanical properties of PA66/PPS blend. When GF content is 20 vol %, the friction coefficient of composite is the lowest (0.35), which is decreased by 47% in comparison with the unfilled blend. The wear volume of the GF‐reinforced PA66/PPS blend composite decreases with the increase of GF content. However, the wear‐resistance is not apparently improved by the addition of GF in the experimental range for comparison with unfilled PA66/PPS blend. The worn surface and the transfer film on the counterface were examined by scanning electron microscopy (SEM). The observations revealed that the friction coefficient of composite depends on the formation and development of a transfer film. The wear mechanism involves polymer matrix wear and fiber wear. The former consists of melting wear and plastic deformation of the matrix, while the latter includes fiber sliding wear, cracking, rupturing, and pulverizing. The contributions of the matrix wear and the fiber wear determine the ultimate wear volume of PA66/PPS/GF composite. In addition, the abrasive action caused by the ruptured glass fiber is also a very important factor. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 523–529, 2006 相似文献
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偶联剂对短玻纤增强PA66微观结构及性能影响研究 总被引:13,自引:0,他引:13
利用双螺杆挤出机制备短玻纤增强尼龙66(GF/PA66)复合材料,研究多种偶联剂对GF/PA66的微观结构及性能的影响。结果表明,偶联剂的加入,不仅使GF在PA66基体中基本呈均匀分布,而且使材料的结构及性能有较大的改善;复合偶联剂All00 A B的改性效果优于单独使用A1100;复合偶联剂中All00的最佳含量为1.5%;随着GF含量的增加,材料的综合性能提高,但当GF含量大于35%时,材料的综合性能开始有所降低;All00 A B改性的GF/PA66的失效机理为界面的脱粘、脱粘后的摩擦和纤维的拔出。 相似文献
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The properties of 30 wt% short glass fiber (SGF) reinforced acrylonitrile-butadiene-styrene (ABS) terpolymer and polyamide 6 (PA6) blends prepared with extrusion were studied using the interfacial adhesion approach. Work of adhesion and interlaminar shear strength values were calculated respectively from experimentally determined interfacial tensions and short beam flexural tests. The adhesion capacities of glass fibers with different surface treatments of organosilanes were evaluated. Among the different silanes tested, γ-aminopropyltrimethoxysilane (APS) was found to be the best coupling agent for the glass fibers, possibly, because of its chemical compatibility with PA6. Tensile test results indicated that increasing amount of PA6 in the polymer matrix improved the strength and stiffness of the composites due to a strong acid–base interaction at the interface. Incorporation of PA6 to the SGF reinforced ABS reduced the melt viscosity, broadened the fiber length distributions and increased the toughness of the composites. Fractographic analysis showed that the incorporation of PA6 enhanced the interactions between glass fibers and the polymeric matrix. 相似文献