Influence of compatibilizers on NBR/PP blends

研究了4种增容剂氯化聚乙烯（CPE）、高氯化聚乙烯、马来酸酐接枝聚丙烯(MP)和氯化聚丙烯(CPP)对丁腈橡胶/聚丙烯(NBR/PP)共混型热塑性弹性体(TPE)物理机械性能的影响。结果表明,CPP是NBR/PP的理想增容剂,当CPP用量为6份时,NBR/PP共混体系具有优良的热塑性,拉伸强度13.8MPa,扯断伸长率290％,压缩永久变形32％。共混物的相容性与透射电镜的分析结果一致。     

乙烯-甲基丙烯酸甲酯共聚物对聚氯乙烯／聚丙烯复合材料性能的影响

以乙烯-甲基丙烯酸甲酯共聚物（EMMA）为增容剂制备了聚氯乙烯（PVC）／聚丙烯（PP）复合材料．采用DSC表征了复合材料的相容性,用WDW3020微控电子万能实验机、XCJ-40电子冲击实验机测试了复合材料的力学性能;并与氯化聚乙烯（CPE）增容PVC／PP共混体系进行了比较。试验结果表明：EMMA能显著改善PVC与PP的相容性。当增容剂用量为9份时,与未增容PVC／PP体系相比。缺口冲击强度,拉伸强度和弯曲强度分别提高了191％,70％,41％;与CPE增容PVC／PP体系相比,缺口冲击强度,拉伸强度和弯曲强度分别提高了44％,39％,12％。     

相容剂对NBR/PP共混型TPE的影响

研究了4种增容剂,氯化聚乙烯（CPE）,高氯化聚乙烯,马来酸酐接枝聚丙烯（MP）和氯化丙烯（CPP）对丁腈橡胶／聚丙烯（NBR／PP）共混型热塑性弹性体（TPE）物理机械性能的影响,结查表明,CPP是NBR／PP的理想增容剂,当CPP用量为6份时,NBR／PP共混体体系具有优良的热塑性,拉伸强度13．8MPa,扯断伸长度290％,压缩永久变形32％,共混物的相容性与透射电镜的分析结果一致。     

氯化聚烯烃大分子改性聚丙烯的研究

利用Haake流变仪,以氯化聚烯烃(氯化聚乙烯CPE、氯化聚丙烯CPP)为大分子改性剂,与聚丙烯(PP)进行熔融复合,并加入三氧化二锑(AO)作为阻燃协效剂,得到一系列不同组成的聚合物复合材料。测试结果表明,CPP对CPE具有增容作用,两者的引入不但可同时提高复合材料的拉伸强度与冲击强度,而且也显著提高了复合材料的阻燃性能。在氯化聚烯烃含量为20%时,CPP/CPE质量比为1/9时复合材料的拉伸强度比纯PP增加了40%,CPP/CPE质量比为9/1时复合材料的冲击强度比纯PP增加了165%,氧指数比纯PP增加了41%,水平燃烧达到FH-1级。     

ABS/PVC/CPE共混体系的力学性能

研究了填充改性丙烯腈-丁二烯-苯乙烯(ABS)三元共聚物、聚氯乙烯(PVC)和CPE三元共混体系力学性能与结构的关系。结果表明，在ABS／PVC共混体系中加入增容剂氯化聚乙烯(CPE)后，提高了共混体系的相容性和机械力学性能；随着共混体系中CPE用量的增加，ABS／PVC／CPE共混体系的冲击强度、断裂伸长率上升，拉伸强度下降，而弹性模量则出现了极大值。     

丁腈橡胶改性聚丙烯体系力学与亲水性能的研究

通过DSC,SEM,力学性能,流变性能和与水接触角测试,研究了氯化聚丙烯(CPP) 增容聚丙烯 丁腈橡胶(PP NBR)体系的力学性能和亲水性能。研究结果表明:在CPP含量不变的情况下,随着NBR含量的增加,PP NBR共混体系的韧性增强,冲击强度和断裂伸长率提高,拉伸强度和模量下降,表面亲水性能增大;在NBR和CPP总含量不变的情况下,当CPP含量增加到一定程度后,共混体系的冲击强度开始下降。     

聚丙烯/聚氯乙烯共混物阻燃性能的研究

选用聚丙烯接枝马来酸酐(PP-g-MAH)为增容剂,以聚丙烯(PP)、聚氯乙烯(PVC)不相容体系为基体,采用双螺杆挤出机制备了PP/PVC共混物混合料。研究了不同PVC组分比及增容剂对PP/PVC共混体系阻燃性能的影响;并对PP/PVC体系的综合性能进行了研究。结果表明,随着PVC用量的增加,PP/PVC共混体系的阻燃性能逐渐变好,力学性能大幅下降。增容剂PP-g-MAH能够明显改善PP/PVC共混体系的力学性能,当其用量为4份时体系的力学性能较好。添加阻燃协效剂Sb2O3可以明显提高PP/PVC共混体系的阻燃性能。     

复配增容剂增容PPO/PP/GF研究

研究复配增容剂(SEPS/PP-g-MAH)对玻璃纤维(GF)增强聚苯醚(PPO)/聚丙烯(PP)力学性能、熔体流动性以及耐热性能的影响,并用扫描电子显微镜观察了不同共混体系的形态结构.结果表明,复配增容剂改善了PPO/PP/GF共混体系的相容性,提高了共混体系的拉伸强度、弯曲强度、冲击强度和熔体流动速率,但同时降低了...     

NBR／PP共混热塑性弹性体材料的研究

通过分别选择普通氯化聚乙烯(CPE)、高氯化CPE、MP(马来酸酐接枝聚丙烯简称)、复合CPP等对丁腈橡胶/聚丙烯(NBR/PP)共混体系进行增容研究;利用半有效硫化体系以及改性树脂硫化体系对共混体系进行动态全硫化研究;用透射电镜研究部分共混体系的亚微观结构,讨论其与共混体系宏观性能间的关系;利用示差扫描量热分析(DSC)对连续相的结晶形态进行研究。实验研究表明,以CPP为相容剂的共混体系经过动态全硫化后具有优良的耐热油性及其他综合性能。     

CPE对PVC／PP共混体系的增容作用

在单螺杆挤出机上用一次投料直接共混方法制样,通过差热分析(DSC),透射电镜(TEM),图象分析和力学性能试验等法研究表明,PVC 和 PP 不相容,CPE对 PVC/PP 共混体系具有较好的增容作用。5份 CPE 使得 PVC/PP 体系分散相(PP)粒径变小,粒径分布均匀性提高,并且使得 PVC 和 PP 两相界面变得比较模糊。在 PVC/PP 体系中加入 CPE 后,共混物的拉伸性能和冲击性能都有较大提高。     

The influence of compatibilizers on nitrile-butadiene rubber and polypropylene (NBR/PP) blends

Four kinds of compatibilizers—chlorinated polyethylene (normal CPE), highly chlorinated CPE, maleic anhydride grafted with polypropylene (MP), and chlorinated polypropylene (CPP)—were used to study the influence of compatibilizing agents on the properties of nitrile-butadiene rubber and polypropylene (NBR/PP) blends, a kind of thermoplastic elastomer (TPE). The results show that the most proper amount of normal CPE, highly chlorinated CPE, MP, and CPP are 9, 8, 7, and 6 wt%, respectively, in the NBR/PP blends. The CPP was the best compatibilizer for NBR/PP blends among the four. NBR/PP blends obtained excellent properties of thermoplastic materials and can be molded with the general processing technologies for thermoplastics, such as injection, extrusion, blow molding, and the like. The mechanical properties are similar to that of Geolast, produced by Monsanto Company, and exceed the Chinese national criterion (GB7527-87). The tensile strength was 13.8 MPa; the elongation at break was 290%; and the compression set was 32%. After the blends were immersed in oil for 70 h, the tensile strength was 10.4 MPa, and the degree of oil absorption was 12%. The compatibility of the blends was consistent with the morphology from transmission electron microscopy (TEM).     

相容剂对NBR/PP共混型热塑性弹性体性能的影响

考察了普通氯化聚乙烯（ＣＰＥ）、高氯化ＣＰＥ、马来酸酐接枝聚丙烯及复合氯化聚丙烯（ＣＰＰ）等相容剂对ＮＢＲ／ＰＰ共混体系性能的影响。试验结果表明，复合ＣＰＰ是ＮＢＲ／ＰＰ共混体系的理想相容剂，其最佳用量为６份；以此为相容剂的ＮＢＲ／ＰＰ共混体系具有优良的热塑性，ＮＢＲ／ＰＰ共混型热塑性弹性体可采用热塑性塑料通用的加工方法进行加工。     

NBR／PP共混热塑性弹性体材料的研究

通过分别选择普通ＣＰＥ，高氯化ＣＰＥ，ＭＰ（马来酸酐接枝聚丙烯的简称），复合ＣＰＰ等对ＮＢＲ／ＰＰ共混体系进行增容研究；利用半有效硫化体系（Ｓ＋促进剂ＴＭＴＤ／促进剂ＣＺ）以及改性树脂硫化体系（改性树脂＋促进剂）为硫化体系对共混体系进行动态全硫化研究；用透射电镜研究其中部分共混体系的亚微观结构，讨论其与共混体系宏观性能间的关系；利用差热分析（ＤＳＣ）对连续相的结晶形态进行研究。实验研究表明，以ＣＰＰ为增容剂的共混体系经过动态全硫化后具有优良的耐热油及其他综合性能，适用于制造耐热油制品，具有广阔的应用前景。     

Compatibilizers for recycling of the plastic mixture wastes. II. The effect of a compatibilizer for binary blends on the properties of ternary blends

In this article, we discuss the effect of a compatibilizer for binary blends on the properties of ternary blends composed of high‐density polyethylene (HDPE), polypropylene (PP), or polystyrene (PS) and poly(vinyl chloride) (PVC) virgin polymers with a simulated waste plastics fraction. Chlorinated polyethylene (CPE), ethylene–propylene rubber (EPR), and their 1/1 (w/w) mixture were tested as compatibilizers for the HDPE/PP/PVC ternary blend. CPE, styrene‐ethylene‐propylene block copolymer (SEP), or their 1/1 (w/w) mixture were tested as compatibilizers for the HDPE/PS/PVC ternary blend. The composition of the ternary blends were fixed at 8/1/1 by weight ratio. The amount of the compatibilizer was 3 phr. Rheological, mechanical, and thermal properties were measured. For the 8/1/1 HDPE/PP/PVC ternary blends, the tensile strength was slightly decreased, but the impact strength was significantly increased by adding EPR, CPE, or their mixture. EPR exhibited the most significant impact modification effect for the ternary blends. In a similar way, for 8/1/1 HDPE/PS/PVC ternary blends, on adding SEP, CPE, or their mixture, the tensile strength was slightly decreased, but the impact strength was noticeably increased. It was found that the SEP worked much better as an impact modifier for the ternary blends than CPE or the SEP/CPE mixture did. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 1048–1053, 2000     

Effects of compatibilizer type and rubber‐wood sawdust content on the mechanical,morphological, and thermal properties of PVC/LDPE blend

This article aimed to investigate the mechanical, morphological and thermal properties of PVC/LDPE blend with and without the addition of compatibilizers. The effects of LDPE content, compatibilizer type and rubber‐wood sawdust loading on the properties of the blend were evaluated. The experimental results suggested that as the LDPE content was increased the mechanical properties of PVC‐LDPE blend progressively decreased due to poor interfacial adhesion. The continuity and compatibility between PVC and LDPE phases could be improved through three different types of compatibilizers which included chlorinated polyethylene (CPE) poly(methyl‐methacrylate‐co‐butyl acrylate) (PA20) and poly(ethylene‐co‐methacrylate) (Elvaloy). The PA20 was found to be the most suitable compatibilizer for the blend. A radical transfer reaction was proposed in this work to explain the structure and thermal changes of the PVC in PVC‐LDPE blend. The decomposition temperature of PVC in the blend decreased with the loading of the PA20 and the wood sawdust. As the sawdust content was increased the tensile and flexural moduli increased with considerable decreased in the tensile, flexural and impact strength, a slight improvement being achieved if the PA20 was incorporated in the composite. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 598–606, 2006     

PP/EVOH/PA6共混物的性能研究

以聚丙烯接枝马来酸酐(PP-g-MAH)为相容剂,制备了聚丙烯(PP)/乙烯-乙烯醇共聚物(EVOH/)聚酰胺6(PA6)共混物,研究了PP/EVOH/PA6三元共混物的相容性、流变性能、阻隔性能、力学性能、热性能及形态结构。结果表明:相容剂与EVOH和PA6间发生了反应,提高了共混物的相容性;相容剂的加入提高了PP、EVOH、PA6的结晶温度,增强了PP与EVOH和PA6间的黏合力,降低了界面张力;EVOH占EVOH/PA6总量68%的三元共混物吸油率最小,当相容剂用量为5份时,PP/EVOH/PA6三元共混物吸油率比PP/EVOH二元共混物降低了8%。     

A study on poly(vinyl chloride) blends with chlorinated polyethylene and polyethylene

By means of a twin-roll masticator and Brabender rheometer, the effect of chlorinated polyethylene (CPE) and polyethylene (PE) on the impact strength and processability of poly(vinyl chloride) (PVC) was studied. The experimental results show that CPE can promote the plasticity of PVC and the effect increases with the amount of CPE. Addition of a small amount of PE in PVC/CPE (100/12) makes an impressive improvement in the impact strength of the mixture. The impact strength of PVC/CPE/PE (100/ 12/2.5) at 20°C is 30.0 kJ/m² higher than that of PVC/CPE (100/12). The dynamic viscoelastic spectra, tensile strength, and elongation test reveal that CPE is incompatible with PVC but may act as a compatibilizer for PVC/PE. The disperse state of the polyblend was studied by differential scanning calorimetry (DSC); it was found that the mixing sequence has an influence on the impact strength of the blend.     

弹性体在车用仪表板表皮材料中的应用

利用DSC和SEM等方法研究了弹性体在汽车仪表板表皮材料用PVC/ABS软质合金中的作用。结果表明,在PVC/ABS共混体系中加入弹性体CPE、NBR后,有助于提高共混体系的相容性,从而使得PVC/ABS共混体系的机械强度和加工性能也发生变化。