PA6/ABS合金的研制

应用Brabender挤出机制备ABS接枝物ABS g MAH,讨论了反应过程中温度、转速、单体MAH和引发剂DCP用量对接枝率的影响,并研究了接枝物对PA6/ABS合金的增容作用,用扫描电镜观察了分散相的微观形态。实验表明,在合适的温度下,转速为30r/min、DCP用量为1%、MAH用量为5%时,ABS g MAH的接枝率可达2 3%;PA6/ABS/ABS g MAH共混物配比为90∶8∶15时,合金的冲击韧性有较大提高,其它性能也有所改善。     

ABS/PP合金材料的研制

利用Brabender挤出机和密炼机分别制备了熔融接枝物PP g MAH,研究了ABS／PP、ABS／PP g MAH、ABS／PP／PP g MAH三种共混物的性能,且作了对比。实验结果表明:PP g MAH的加入,能在一定程度上改善共混物的冲击性能、加工流动性能和耐热性能。     

马来酸酐、苯乙烯双单体接枝ABS及其应用

采用熔融法研究了马来酸酐(MAH)和苯乙烯(St)接枝ABS。结果表明,只用MAH单体时,MAH接枝率随MAH添加量增加而提高,接枝效率一般不超过60％;用St和MAH两种单体时,在MAH添加量保持不变时,MAH接枝率随St添加量的增加而提高,但达到一定量后开始下降。用MAH和St双单体接枝改性的ABS树脂增容的ABS/PC(70/30)合金与未增容的相比,制品缺口冲击强度提高1.5倍。     

偶联剂对玻纤增强ABS复合材料性能的影响

采用偶联剂处理玻璃纤维，制备了ABS／玻璃纤维复合材料，研究了偶联剂的种类、用量、纤维处理方法，以及马来酸酐接枝ABS（ABS－g－MAH）、抗冲改性剂、抗氧剂等助剂对ABS复合材料性能的影响。结果表明，1．5％的KH－550偶联剂与10％的ABS－g－MAH并用可大幅度提高ABS复合材料的力学性能。     

马来酸酐接枝废旧 HDPE的制备与应用

以马来酸酐(MAH)为单体、过氧化二异丙苯(DCP)为引发剂,用熔融接枝法制得改性废旧HDPE(MARPE),研究DCP、MAH含量对接棱产物性能的影响,用红外光谱(FIIR)对接枝产物进行分析,并将接枝产物用于废旧PC/ABS合金,用SEM观察界面.结果表明:马来酸酐能够在废旧HDPE上进行接枝;随着DCP含量的增加,接枝产物的接枝率逐渐增加,熔体指数减小;随着MAH含量的增加,接枝产物的接枝率先增加后减小,熔体指数无明显变化;马来酸酐接枝废旧HDPE能够提高废旧PC/ABS合金的界面相容性,改善其力学强度.     

PP-g-MAH改性PC/ABS合金的研究

用自制马来酸酐接枝聚丙烯(PP-g—MAH)对PC／ABS舍金进行改性研究。结果表明，PP-g-MAH对PC／ABS合金有明显增容作用，可使合金的缺口冲击强度显著提高，当接枝物中马来酸酐(MAH)含量为5％、引发剂过氧化二异丙苯(DCP)含量为0．27％，PC／ABS合金中PP—g—MAH用量为2．5份时，合金综合性能最佳，其缺口冲击强度可达44kJ／m^2。     

供求信息

产品名称 规格 产地 价格/ (元/t) 供求 产品名称 规格 价格/ (元/t) PP接枝MAH PE接枝MAH LDPE接枝MAH 丙烯酸接枝PE EVA接枝MAH PS共聚MAH SAN共聚MAH P」几/PE、PEzPET 用相容剂 超韧尼龙增韧剂 易分散超韧尼龙 增韧剂 ABS、AS、PVC、PC/ ABS用增韧剂 CMG9801 CMG9804 CMG9904 CMG0104 MV0106 MPC1501 MPC1502 产地 上海 上海 上海 上海 上海 上海 上海 供求一供 EPMA202上海 CMG9802上海 CMG9805上海 ERMA151上海 面议 面议 面议 面议 面议 28 000 面议 面议 面议 23 000 柴油清净剂BCD一1本公司…     

ABS-g-MAH增韧聚酰胺6的研究

采用乳液聚合技术合成的丙烯腈-丁二烯-苯乙烯共聚物（ABS）和马来酸酐（MAn）接枝的ABS接枝共聚物（ABS-g-MAH）作为聚酰胺6（PA6）的增韧剂。红外光谱（FTIR）研究表明MAH在接枝共聚物中以接枝共聚和游离共聚两种方式存在；流变性能结果显示，随着MAH用量的增加，PA6／ABS-g-MAH共混体系扭矩逐渐上升；透射电镜（TEM）观察发现，ABS在PA6中发生明显的聚集，相区尺寸很大，随着MAH的引入，ABS相形态得到改善，当MAH含量高于1％时，ABS在PA6中均匀分散，表明基体与分散相的相容性得以提高；与PA6／ABS相比，PA6／ARS-MAH的脆一韧转变温度向低温方向移动，冲击韧性提高；扫描电镜（SEM）结果表明，PA6／ABS-g-MAH共混体系的形变机理是PA6基体的剪切屈服和ABS-g-MAH橡胶粒子的空洞化。     

马来酸酐固相接枝ABS树脂

采用固相接枝法制备了马来酸酐(MAH)接枝丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)(ABS-g- MAH),研究了反应温度、反应时间及单体和引发剂用量对接枝率的影响。确定最佳接枝条件为:反应温度70℃,反应时间5～6 h,引发剂质量分数8％,单体质量分数10％,此时可得到接枝率为1．4％的ABS-g-MAH。对ABS的组分分离证明,接枝发生在ABS的丁二烯部分。     

ABS树脂熔融接枝马来酸酐的研究

研究了在双螺杆挤出机中使用自制的引发剂进行马来酸酐（MAH）熔融接枝（丙烯腈／丁二烯／苯乙烯）共聚物（ABS）的反应，对反应机理进行了讨论，红外光谱分析证明，MAH成功地被接枝到ABS的主链上，对ABS的组分分离证明接枝发生在ABS的丁二烯部分。研究了MAH用量，引发剂含量，反应温度和螺杆转速及溶剂对接枝反应的影响，发现接枝率随着MAH用量的增加，反应时间和螺杆转速的增加而增大；当增大引发剂含量时，接枝率呈现先增加后降低的趋势，自制引发剂比常用的过氧化二异丙苯（DCP）或过氧化苯甲酰（BPO）引发剂接枝效果要好得多，而且受加工条件的影响小。     

Effect of functionality levels and compatibility of polycarbonate blends with maleic anhydride grafted ABS

ABS was melt grafted with maleic anhydride at three different levels of 1, 2, and 3 wt %. These three different modified ABSs were melt blended with polycarbonate using a single‐screw extruder to choose a suitable maleic anhydride grafting level on ABS for better performance. For the compatibility study, binary blends of polycarbonate with ABS and maleic anhydride‐grafted ABS were prepared over the entire range of compositions. Compatibility of these blends was studied using a Dynamic Mechanical Analyzer and by Differential Scanning Calorimetry. Both techniques suggest more partial compatibility for modified blend systems. In addition to this, DSC thermograms show multiple peaks between the transition points of ABS fractions and polycarbonate fractions for the polycarbonate/maleic anhydride‐grafted ABS blends. These multiple peaks are characteristic of better partial compatibility with fine microstructure. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2102–2110, 1999     

Morphological,mechanical, and rheological studies of PVC/ABS blends in the presence of maleic anhydride

A novel method of enhancing compatibility in PVC/ABS blends is the use of ABS‐grafted‐(maleic anhydride) (ABS‐g‐MAH) as a compatibilizer. In this study, maleic anhydride was grafted onto ABS (initiated by peroxide) in an internal mixer. Grafting degree was determined by a back‐titration method, and certain amounts of the resultant ABS‐g‐MAH were added to PVC/ABS blends during their melt blending in the mixer. The weight ratio of PVC to ABS was kept at 70:30. Evaluation of compatibilization was accomplished via tensile and notched Izod impact tests, scanning electron microscopy (SEM), and rheological studies. According to the SEM micrographs, better dispersion of the rubber phase and its finer size in properly compatibilized blends were indications of better compatibility. Besides, in the presence of a proper amount [5 parts per hundred parts of PVC (php)] of ABS‐g‐MAH, PVC/ABS blends showed significantly higher impact strengths than uncompatibilized blends. This result, in turn, would be an indication of better compatibility. In the presence of 5 php of compatibilizer, the higher complex viscosity and storage modulus, as well as a lower loss modulus and loss factor in the range of frequency studied, indicated stronger interfacial adhesion as a result of interaction between maleic anhydride and the PVC‐SAN matrix. J. VINYL ADDIT. TECHNOL., 2010. © 2010 Society of Plastics Engineers     

The impact of polymer matrix blends on thermal and mechanical properties of boron nitride composites

To improve mechanical and thermal properties of a hexagonal boron nitride platelet filled polymer composites, maleic anhydride was studied as a coupling agent and compatibilizer. Injection molded blends of acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), and maleic anhydride with boron nitride filler were tested for thermal conductivity and impact strength to determine whether adding maleic anhydride improved interfacial interactions between matrix and filler and between the polymers. Adding both HDPE and maleic anhydride to ABS as the matrix of the composite resulted in a 40% improvement in impact strength without a decrease in thermal conductivity when compared to an ABS matrix. The best combination of thermal conductivity and impact strength was using pure HDPE as the matrix material. The effective medium theory model is used to help explain how strong filler alignment helps achieve high thermal conductivity, greater than 5 W/m K for 60 wt % boron nitride. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 137, 48661.     

Solvothermal preparation of maleic anhydride grafted onto acrylonitrile-butadiene-styrene terpolymer (ABS)

The grafting copolymerization of maleic anhydride (MAH) onto acrylonitrile-butadiene-styrene terpolymer (ABS) was carried out through solvothermal process. Infrared (IR) spectra and ¹H NMR spectra confirmed that maleic anhydride was successfully grafted onto the ABS backbone. The influences, such as MAH concentration, the initiator's content, reaction temperature and time, comonomer, ABS concentration and different solvents, on the grafting copolymerization were also studied. Results indicated that the preparation of MAH grafted onto ABS through solvothermal method can be carried out in both good solvent and poor solvent, which is much different from the traditional solution grafting method, and high grafting degree can be obtained in good solvent.     

ABS动态接枝提高玻纤增强性能的研究

用反应加工的方法可在ABS分子链上接枝酸酐基团。断面微观形态的观察和分析表明：接枝改性提高了ABS基体与经硅烷偶联剂表面处理的玻璃纤维的界面粘结强度,可较好地发挥玻纤增强效果,使力学性能得到显著改善。MAH、DCP最佳加入量依赖于具体共混工艺条件。     

马来酸酐接枝ABS的增容改性研究

研究了增容剂马来酸酐接枝ABS对PC／ABS合金、PA6／ABS合金及ABS／GF复合材料力学性能的影响。结果表明，该增容剂的加入明显提高了PC／ABS合金的冲击强度和断裂伸长率，使PA6／ABS合金的各项力学性能均明显提高，使ABS／GF复合材料的拉伸强度和断裂伸长率也有较大提高。     

PC/ABS/聚硼硅氧烷阻燃合金的性能

采用X射线能谱分析(EDX)研究了PC/ABS/聚硼硅氧烷阻燃合金的燃烧行为,同时考察了阻燃PC/ABS合金的力学性能和加工性能。结果表明,聚硼硅氧烷(PB)中的Si元素会随着燃烧过程的进行逐渐在合金表面进行富集,形成富含Si的绝缘炭层覆盖在基体表面,阻止合金继续燃烧,从而有效提高了PC/ABS合金的阻燃性能。聚硼硅氧烷使PC/ABS合金体系的力学性能有所下降,但拉伸强度下降较少,PB对PC/ABS合金的冲击强度影响较大。在阻燃PC/ABS合金体系中加入相容剂马来酸酐接枝ABS,可使合金体系的力学性能得到明显提高。适量的PB可以改善PC/ABS合金的加工性能。     

Modification of poly(lactic) acid by reactive extrusion and its melt blending with acrylonitrile–butadiene–styrene

Poly(lactic) acid (PLA) is a biodegradable polymer that has attracted interest as a potential substitute for some thermoplastic polymers. However, its advanced brittleness at room temperature represents one of the major drawbacks for its general use. In this work, PLA was modified by reactive extrusion (PLA_REx) to enhance the rheological behaviour and to limit its degradation. The modified material was melt blended with acrylonitrile–butadiene–styrene (ABS), and the resultant morphology, rheological, thermo‐mechanical and fracture behaviour were analysed. Since PLA does not have reasonable compatibility with ABS, maleic‐anhydride‐grafted ABS (ABS‐g‐Ma) was used as compatibilizer. The morphology of the PLA_REx/ABS samples resulted in the formation of small ABS rods in the matrix. The presence of maleic anhydride contributed to reducing the interfacial energy of the blends and to obtaining finer micro‐domains of the ABS‐rich phase in the PLA_REx matrix. In the compatibilized blends, the presence of elongated ABS‐rich phases opposed free crack propagation and contributed to the increase in fracture energy in comparison to neat PLA. © 2020 Society of Chemical Industry