硅酸盐填充ABS复合材料的性能研究

以固相ABS三单体接枝物(ABS-g-VM)作为相容剂，分别采用云母和高岭土对ABS进行填充改性。研究了填料用量对ABS复合材料的力学性能和动态力学性能的影响。结果表明，云母以片层状结构分布于ABS中，可有效提高ABS的强度和刚度，具有较好的综合力学性能；同时还可有效地降低复合材料在发生玻璃化转变温度时的动态力学损耗。     

白云母改性与填充ABS工程塑料的试验研究

利用硅烷WD-70对白云母进行表面改性处理,与丙烯腈-丁二烯-苯乙烯共聚物(ABS)复合加工制备复合材料,研究了白云母填料用量对ABS复合材料的力学性能的影响.结果表明,白云母以片层状结构分布于ABS中,可有效提高ABS的刚度,在保持较好综合力学性能的基础上,能起到大大降低成本的作用.     

包覆红磷阻燃ABS的性能研究

研究了包覆红磷对丙烯腈／丁二烯／苯乙烯共聚物（ABS）复合材料的阻燃行为和力学性能的影响，并对其阻燃机理进行了探讨。结果表明，包覆红磷能显著降低ABS复合材料的热释放速率、有效燃烧热、质量损失速率，当包覆红磷用量为25％（质量分数，下同）时，ABS复合材料能达到UL94V-0级阻燃要求；包覆红磷对ABS复合材料的阻燃以凝聚相阻燃为主；包覆红磷对ABS的力学性能尤其是冲击强度有较大影响，当包覆红磷用量为30％时阻燃ABS的冲击强度由130kJ／m^-2降为25kJ／m^-2。     

影响聚丙烯基木塑复合材料力学性能因素

研究了偶联剂、相容剂、木粉用量和木质填料种类对以聚丙烯（PP）为基体树脂制备小塑复合材料力学性能的影响。结果表明，以硅烷偶联剂处理木粉或直接加入相容剂均使复合材料力学性能得到提高；木粉用量的提高使复合材料冲击强度下降，弯曲强度、弯曲模量、拉伸强度则大幅提高；在分别以粒径为0．14mm木粉和0．22mm木粉、竹粉、花生壳粉、稻壳粉制备复合材料，以粒径为0．14mm木粉与PP制备的复合材料力学性能最好。     

纳米CaCO3填充ABS/PP合金复合物研究

通过熔融共混使纳米CaCO3粒子周围包覆上一层TPE橡胶,制备出纳米CaCO3母料,用其与PP、ABS共混复合制备出ABS/PP合金纳米填料复合物.该复合材料力学性能及熔体流动性能测试结果表明,纳米CaCO3含量在试验用量范围内,ABS纳米CaCO3复合物的拉伸强度随填料含量的增加而增加,当母料含量为17%,母料中纳米CaCO3填料含量为60%左右时有较佳的冲击性能;ABS/PP纳米CaCO3复合物在PP含量9%～10%时有最好的拉伸强度和冲击强度;纳米CaCO3填料含量对复合物的拉伸强度影响不大,随其用量增加对冲击强度有明显的提高;熔体流动性能在PP含量10%左右时达最大,但随填料含量增加而下降.     

永丰超白大方解石粉在ABS中的应用

选取3种不同细度的由永丰超白大方解石制成的超细碳酸钙(CC)(CC–1250,CC–2500,CC–6000CC)作为无机填料,以丙烯腈–丁二烯–苯乙烯塑料(ABS)为基体,采用双螺杆挤出机制备了ABS/CC复合材料,研究了CC的细度和用量对ABS力学性能、熔体流动速率(MFR)和密度的影响。结果表明,在相同的CC(20份)用量下,细度适中的CC–2500在ABS中的分散性最好,由其制备的ABS复合材料具有最好的综合力学性能和加工流动性以及最小的密度。随CC–2500用量的增加,复合材料的拉伸强度和弯曲强度逐渐减小,MFR先增加后降低,密度逐渐增大,而缺口冲击强度总体呈降低的趋势,但在CC–2500用量为20份时有所回升,基本与CC–2500用量为5份时的数值相当。当CC–2500用量为20份时,复合材料的综合性能最好,拉伸强度、弯曲强度、简支梁和悬臂梁冲击强度分别达到37.25 MPa,54.98 MPa,18.42 k J/m~2和22.87 k J/m~2,MFR为12.33 g/10 min,密度为1.081 g/cm~3。扫描电子显微镜结果显示,即使在用量较高的情况下,CC–2500仍可以均匀地分散在ABS基体中。     

封端聚羟基硬脂酸酯脂肪胺超分散剂的合成及其应用研究

通过缩聚反应制备聚12-羟基硬脂酸酯，将软脂酸、3-二甲氨基丙胺与聚12-羟基硬脂酸酯反应，生成封端聚羟基硬脂酸酯脂肪胺（HTPF）超分散剂。采用红外光谱、核磁共振氢谱对产物结构进行表征。通过沉降实验与扫描电镜分析HTPF对于炭黑的分散效果。将HTPF加入ABS/炭黑色母粒中，研究HTPF的用量对ABS/炭黑色母粒流变性能以及力学性能的影响。结果表明：相较纯色母粒，随着HTPF用量的增加，复合材料的损耗模量和储能模量逐渐降低，并且复合材料出现剪切变稀行为。随着HTPF用量的增加，复合材料的力学性能逐渐提升。当HTPF用量为40%时，复合材料的拉伸强度、冲击强度达到最大，为45.9 MPa和8.54 kJ/m2；当HTPF用量为50%时，复合材料的弯曲强度达到80.22 MPa。     

纳米ZnO／ABS复合材料的制备及性能研究

制备了改性纳米ZnO／丙烯腈-丁二烯-苯乙烯共聚物复合材料，研究改性纳米ZnO用量对复合材料维卡软化温度及紫外线老化前后力学性能的影响。结果表明：适量添加改性纳米ZnO既可有效提高ABS复合材料的维卡软化温度及各种力学性能，又可赋予复合材料优良的耐老化性能。改性纳米ZnO用量为3％时，ABS复合材料的维卡软化温度达102℃，比纯ABS树N（98．7℃）提高3．2℃；紫外线老化前后复合材料的拉伸强度较纯ABS树脂分别提高37．4％和44．6％、断裂伸长率提高0．9％和357％、硬度提高45．4％和29％、缺口冲击强度提高13.8％和44．7％、无缺口冲击强度提高12．4％和44.4％。     

悬浮浸渍拉挤成型长玻纤增强ABS复合材料工艺研究

摘要：浮液浸渍玻璃纤维，烘干，熔融状态下拉挤成棒型，切粒，注射成型。研究了玻纤用量对复合材料力学性能的影响。研究结果表明，复合材料的冲击强度、拉伸强度随玻纤用量的增加而提高。悬浮法是较好的制备纤维增强ABS复合材料的方法。     

PVC/ABS复合材料的制备及增韧改性

分别采用乙烯–乙酸乙烯酯共聚物(EVAC)、氯化聚乙烯(CPE)和苯乙烯–丁二烯–苯乙烯共聚物(SBS)三种弹性体为增韧剂,研究增韧剂种类及用量对聚氯乙烯(PVC)/丙烯腈–丁二烯–苯乙烯塑料(ABS)复合材料冲击强度、拉伸强度和极限氧指数的影响,并对纳米CaCO_3填充改性PVC/ABS复合材料的力学性能、熔体流动速率和极限氧指数(LOI)进行探讨。结果表明,采用CPE增韧改性的PVC/ABS复合材料的力学性能和阻燃效果均优于EVAC和SBS改性体系;PVC/ABS/CPE/CaCO_3复合材料的缺口冲击强度在纳米CaCO_3用量为6份时达到极大值,随着纳米Ca CO3用量的增加,拉伸强度和弯曲强度逐渐下降,LOI有所降低,在纳米CaCO_3用量为4份时材料的加工流动性较好。     

ABS/蒙脱土纳米复合材料的制备、结构及性能

将SAN／蒙脱土纳米复合材料与ABS高胶粉熔融共混得到ABS／蒙脱土纳米复合材料。对纳米复合材料的机械性能进行了表征．结果发现蒙脱土的加入一定程度上提高了ABS的杨氏模量和弯曲模量，但冲击强度有明显的降低。采用XRD、TEM和SEM对纳米复合材料的结构进行表征，结果表明在共混过程中，蒙脱土片层的物理特性导致其基本分布在橡胶粒子的表面．甚至造成粒子的变形和破裂；ABS／蒙脱土纳米复合材料在冲击过程中，蒙脱土片层的分散状态导致橡胶粒子不能发生塑性变形，冲击断面呈多孔形态。     

PP/MMT复合材料的制备与性能研究

以聚丙烯(PP)回收料为基体,改性蒙脱土(MMT)为填充剂,通过熔融共混的方法制备了PP/MMT复合材料,探讨了MMT用量对PP/MMT复合材料的热行为、机械性能及流动性能的影响。结果表明:少量MMT的加入可明显提高复合材料的力学性能,其拉伸强度提高26%,断裂伸长率提高520%,冲击强度提高11%。MMT的加入可提高复合材料的结晶温度,但对其熔点的影响不大;随着MMT的添加,PP/MMT复合材料的流动性能得到了很好的改善,当MMT的含量为1 wt%时,其熔融指数达到最大值,体系的粘度变小。     

高密度聚乙烯／蒙脱土纳米复合材料的制备与性能研究

采用马来酸酐接枝乙烯醋酸乙烯酯（EVA-g-MAH）和马来酸酐接枝低密度聚乙烯（PE-LD-g-MAH）为相容剂，制备了高密度聚乙烯傣脱土（PE-HD／MMT）纳米复合材料。用X射线衍射和扫描电镜对有机蒙脱土和PE-HD／MMT复合材料的结构进行了表征，研究了蒙脱土和相容剂含量对制备的纳米复合材料力学性能及热性能的影响。结果表明，相容剂的加入有利于插层。MMT在复合材料中呈纳米级分散。其层间距可由2．10nm增大至3．85nm。MMT含量为3％（质量分数，下同）、EVA-g-MAH含量为15％时，复合材料的综合力学性能最好，冲击强度和拉伸强度分别较PE-HD提高43．7％和5.8％。     

In-situ growth of layered double hydroxide on montmorillonite nanosheets to improve the flame retardant performance of ABS resin

Layered double hydroxide (LDH) is a widely used flame retardant in polymer materials; however, the poor dispersion due to its high hydrophilic nature results in disappointing thermal stability and fire safety. In this work, LDH was in-situ grown on the disordered montmorillonite (MMT) nanosheets to obtain the hybrid of LDH and MMT nanosheets (LDH@MMT, simplified as LM). Various techniques, including X-ray diffraction, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, and transmission electron microscope were used to characterize the microstructure of LM. In addition, the acrylonitrile-butadiene-styrene (ABS) composite containing LM and intumescent flame retardant (IFR) was prepared, and its mechanical and flame-retardant properties were also measured. The characterization results demonstrate that the LM exhibits a periodically alternating layered structure. The Limiting Oxygen Index (LOI) of the ABS composite reaches 27.2% with a V-0 rating in the UL-94 vertical burning test, while its flexural strength and tensile strength decrease by only 17.82% and 13.45%, respectively. Furthermore, the heat release rate, total heat release, smoke production rate, and carbon monoxide production rate of the ABS composite present a significant decline in cone calorimeter tests compared with those of pure ABS. The results further indicate that the hybridization could effectively improve the flame-retardant performance of ABS composites and perform lesser impacts on their mechanical properties.     

Poly(styrene-co-acrylonitrile)/montmorillonite organoclay mixtures: a model system for ABS nanocomposites

Dispersion of clay particles in acrylonitrile-butadiene-styrene (ABS) and styrene-acrylonitrile copolymer (SAN) nanocomposites with montmorillonite (MMT) have been compared to assess whether ABS/MMT nanocomposite behavior can be adequately modeled using the simpler SAN/MMT system. Electron microscopy photomicrographs show that clay particles in ABS/MMT composites reside in the SAN matrix phase and accumulate at the rubber particle surfaces. In mixtures of four organoclays with the two polymers, WAXS (wide angle X-ray scattering) peak height and shift in gallery height was the same for a given organoclay. Aspect ratios determined through image analysis were also the same in each polymer. Modulus enhancement as measured by an exfoliation efficiency index showed the same patterns for each organoclay in the two matrices, but the ABS/MMT composites had consistently lower efficiencies than in SAN/MMT composites. This trend is expected to be due to the variations in orientation of clay particles in ABS/MMT composites at the rubber particle surface. In summary, SAN/MMT composites represent a good model system for ABS/MMT.     

PP／PPMA／Org—MMT复合材料的制备与性能研究

采用熔融插层法制备PP／PPMA／Org-MMT复合材料，考察接枝物含量、不同聚丙烯、不同接枝率接枝物以及不同成型工艺对PP／PPMA／Org-MMT复合材料的制备与力学性能的影响。结果表明，采用PP（F401）、高接枝率接枝物和模压工艺可获得较好的插层效果。接枝物含量为10％时，PP／PPMA／Org-MMT复合材料的拉伸强度达到最大值。     

废纸浆/ABS复合材料的性能研究

研究了废纸浆、马来酸酐接枝苯乙烯-乙烯/丁烯-苯乙烯(SEBS-g-MAH)用量以及发泡对废纸浆/丙烯腈-丁二烯-苯乙烯(ABS)复合材料的力学性能和吸水率的影响;通过扫描电镜SEM分析了SEBS-g-MAH对未发泡和发泡废纸浆/ABS复合材料的增容效果.结果表明:废纸浆用量为30份和SEBS-g-MAH用量为20份时,未发泡和发泡复合材料的拉伸性能和缺口冲击强度都达到最佳;吸水率随纸浆用量的增加而增加,SEBS-g-MAH用量为20份时,未发泡和发泡材料吸水率都达到最低.发泡后的复合材料的拉伸强度降低,冲击性能和吸水率升高.SEBS-g-MAH能有效地改善ABS和纸浆的界面相容性.     

Electron beam irradiation of zinc borate flame retardant containing acrylonite-butadiene-styrene (ABS) composites

The effects of electron beam radiation and zinc borate on the mechanico-physical properties and flame resistivity of magnesium hydroxide (MOH)- acrylonitrile butadiene styrene (ABS) composites have been investigated. The increasing of irradiation dosages has gradually improved the tensile strength and gel content of all samples by inducing the degree of crosslinking networks formed in ABS matrix. Analysis shows that higher amount of zinc borate is desirable to achieve promising tensile strength because zinc borate can attach into the interfaces between MOH particles and ABS matrix. Moreover, the addition of zinc borate could also retard the flammability of ABS as evidenced by LOI results. The crosslinking networks formed could improve fire resistance by reducing the melt dripping phenomenon. This is expected because the crosslinking networks can effectively minimize the oxygen gas to penetrate through the polymer structure to participate actively in the combustion activity.     

High‐performance hydrogenated nitrile butadiene rubber composites by in situ interfacial design of nanoclays

Considering industrial requests, it has become a hot issue to prepare advanced rubber composites with high strength and great toughness. Despite enhanced strength and stiffness, rubber composites suffer markedly reduced extensibility and toughness. Herein, a novel interfacial strategy is proposed to fabricate amine‐modified montmorillonite (MMT)/hydrogenated nitrile butadiene rubber composites by designing in situ ionic bond interfaces. The well‐distributed interfaces, which are composed of protonated amine groups on the MMT surfaces and electronegative methacrylic acid (MA), were constructed by adding a slurry with a small amount of MMT and MA to rubber. After the vulcanization, self‐polymerization of MA developed nanoparticles and grafting structures onto rubber chains to bond MMT by strong ion attractions. Although the crosslinking degree of rubber was reduced, the dispersion of MMT and its interfacial interactions with rubber were improved remarkably, as demonstrated by morphology observations, dynamic mechanical analysis and infrared spectra. As a result, the strength, modulus, elongation, toughness and gas barrier properties of the rubber composites were simultaneously strikingly improved relative to composites without MA modifiers. We believe that this work provides a promising methodology of fabricating high‐performance rubber composites. © 2019 Society of Chemical Industry