PA11/PA1010共混物的性能研究

采用熔体共混的方法制备了聚酰胺11/聚酰胺1010(PA11/PA1010)共混物,通过力学性能和差示扫描量热(DSC)测试,研究了PA11/PA1010共混物的力学与结晶性能。测试结果表明:PA1010对PA11同时具有增韧、增强作用;当PA11/PA1010为70/30时,共混物开始出现两个结晶峰和低温熔融峰;共混物的结晶和熔融以PA11为主,兼具有PA11和PA1010的优良性能;断裂伸长率、拉伸强度与缺口冲击强度均达到极大值。     

服装衬布用三元共聚酰胺热熔胶的合成及应用

简述了以PA6盐、PA66盐、PA1010盐为原料合成聚酰胺热熔胶的工艺过程及在衬布上的应用。     

PA1010/羟基磷灰石复合材料的制备与性能

利用熔融共混法制备了聚酰胺1010(PA1010)/羟基磷灰石(HA)复合材料,采用傅立叶变换红外光谱、热重分析仪和差示扫描量热仪测试了PA1010/HA复合材料的结构特征和热稳定性,利用电子万能试验机测试了PA1010/HA复合材料的力学性能。结果表明:复合材料中PA1010与HA之间通过氢键作用结合,而氢键作用的主要发生位置在PA1010酰胺键的氨基与HA的羟基之间;PA1010/HA复合材料具有良好的热稳定性,HA的加入对PA1010/HA复合材料的熔点基本没有影响,随着HA含量的增加,其熔融焓和结晶焓都降低。HA的加入,增强了PA1010/HA复合材料的拉伸性能和弯曲性能,与纯PA1010相比,分别提高了33.4%,98.3%。     

耐溶剂聚碳酸酯/聚酰胺1010共混物的制备及其性能探讨

用碳链较长、韧性较好的聚酰胺（PA）1010对聚碳酸酯（PC）进行改性。对PC/PA1010合金体系的力学性能、耐热性能、耐溶剂性能以及动态流变性能等进行了研究,并探讨了PA1010及相容剂聚乙烯接枝甲基丙烯酸缩水甘油酯（PE-g-GMA）对PC/PA1010合金的性能影响。结果发现,PA1010能够较好地保持合金的冲击强度,同时明显改善了PC的耐溶剂性能;PE-g-GMA对PC/PA1010有很好的反应增容作用;当PC/PA1010/PE-g-GMA的配比为80/15/5（质量比,下同）时,合金获得最佳综合性能。     

尼龙12、尼龙612小试成功

尼龙12、尼龙612都是聚酰胺工程塑料的重要品种。目前,由于我国聚酰胺生产中产量最大的品种是尼龙1010,它是以蓖麻油为原料制成的,因此,尼龙1010的生产因原料不足、成本高而受到了一定的限制。而尼龙12、尼龙612都是采用了丁二烯为起始原料,丁二烯为石油化工产品,它的来源丰富,这就为扩大生产提供了重要的条件。同时尼龙12、尼龙612具有优异的综合性能,     

红外光谱法鉴别不同种类的聚酰胺

不同种类聚酰胺的结构和性能不同,为了便于生产,需对聚酰胺的种类进行鉴别.讨论了用红外光谱法鉴别不同种类聚酰胺,包括:试样制备、谱图分析、结论与建议.谱图分析概述了不同种类聚酰胺红外吸收光谱的共同特征,详细分析了不同种类聚酰胺红外吸收光谱的区别,包括尼龙6和尼龙66,尼龙11和尼龙12,尼龙610、尼龙612和尼龙1010,尼龙6T和尼龙9T共4组红外光谱图特征区别峰.     

三菱工程塑料开发出高阻燃性尼龙

三菱工程塑料开发出了无溴聚酰胺（PA）树脂“Novamid 1010N5-GW”，该材料符合白家电规格IEC60335-1第4版的有关规定。     

新型聚酰胺热熔胶的研制与开发

采用尼龙1010代替尼龙66,从配方上改进了聚酰胺热熔胶的耐水洗性能,同时,采用环氧改性技术,提高了热熔胶的粘接强度和耐水洗性能。     

PA1010/CaCl_2复合材料的多重熔融行为研究

通过熔融挤出法制备了聚酰胺1010/氯化钙(PA1010/Ca Cl2)复合材料。研究了PA1010/Ca Cl2复合材料的熔融结晶行为。结果表明:PA1010存在双重熔融峰,分别代表完善程度不同的晶体;不完善晶体在较低结晶温度下生成且生成速率较慢,完善晶体则生成速率较快,不完善的晶体在熔融后可以重排为完善的晶体;Ca Cl2的加入可以促进不完善晶体的生成,并阻碍不完善晶体向完善晶体进行重排。     

氯化锌对聚酰胺1010/氯化锌复合材料结构与性能的影响

利用熔融挤出法制备了聚酰胺1010(PA1010)/氯化锌(ZnCl2)复合材料,研究了ZnCl2的含量对PA1010/ZnCl2复合材料的结晶行为、力学性能、光学性能的影响。结果表明:随着ZnCl2含量的增加,PA1010/ZnCl2复合材料的结晶不完善程度增大,熔点降低。另外,PA1010/ZnCl2复合材料的拉伸强度随着ZnCl2含量的增加逐渐增大,当ZnCl2含量为8%时,复合材料的拉伸强度达到最大值66.2 MPa,与PA1010(52.2 MPa)相比提高了26.7%。当ZnCl2含量为8%时,可以得到熔点较低,力学性能优良和透光率较好的PA1010/ZnCl2复合材料。     

Gamma-radiation damage to polyamide-1010 crystal structure

Radiation effects on polyamide-1010 specimens having various states of aggregation were studied using wide angle X-ray diffraction, electron spin resonance, calorific and sol measurement techniques. Experimental results indicated that chain crosslinking and scission of the irradiated polyamide-1010 occurred mainly in the amorphous region and on the crystal surface. The radiation-induced crystal damage and amorphotization started from the crystal surface (or interface) and extended into the inner portion of the crystal with increasing radiation dose. It is believed that the interface between crystalline and amorphous regions was the main region wherein free radicals were trapped.     

离聚体增容PA1010／SBS共混物的研究

采用磺化丁基胶锌盐(ZnSIIR)离聚体作为PA1010/SBS共混物的增容剂,研究了共混体系的结构、形态、相容性及对材料冲击性能的影响。结果表明,ZnSIIR的加入有效改善了SBS在PA1010中的相容性;对PA1010结晶起成核作用,并加快其结晶速率;共混物缺口冲击强度得到提高,且在PA1010/SBS为90/10、ZnSIIR为SBS的10％左右时效果较佳。     

Influence of the fold surface of the lamellae on radiation effects—research on irradiated polyamide-1010 containing heterogeneous nuclei

Irradiated polyamide-1010 (PA 1010) and PA 1010 containing 0.5% (wt) heterogeneous nuclei were studied by ESR, WAXD, DSC and the determination of gel fractions. The fold surface of the lamellae plays an important role in the effects of radiation on crystalline PA1010. The results show that the direct radiation effects on both samples vary, while after being heated to 220°C, the final radiation effects are identical, regardless of the difference in the amount of the fold surface of the lamellae. The post-radiation effects result predominantly from the fold surface.     

Crack growth mechanism in some polyamides

Fracture toughness was measured with single-edge notched three-point bend specimens. The materials used were semicrystalline polymers, polyamide-66, polyamide-1010 and polyamide-610. Their fracture surface was investigated with the help of scanning electron microscopy. The crack growth mechanism is revealed and a model suggested. The stable crack growth feature of the fracture surface is the dimples. The stable crack growth includes: the crack tip blunting, the voids initiating, coalescing and extending, the fibrillated polymer rupturing and contracting, then the formation of dimples on the fracture surface. The unstable crack growth formed a fan cleavage zone. The crack growth passed along the boundaries of spherulitic crystals in which many subcracks have occurred. The mechanism of discontinuous subcrack propagation in ductile polyamide-610 was discovered. In the compressive zone of the bend specimen, the fracture mechanism is similar to the cleavage zone and exhibits shear failure response.     

The effect of reactive compatibilization of carboxylated polystyrene on morphology and toughness of polyamide-1010/polystyrene blends

The morphology and notched impact behaviour of polyamide-1010/polystyrene (PA1010/PS) (90/10) blends compatibilized by carboxylated polystyrene (CPS) have been studied. It is found that the addition of CPS has a beneficial effect upon the morphology of the resulting blends which leads to a finer dispersion of the PA1010 spherulites and of the PS particles in the PA1010 matrix. However, with increasing CPS content, the shape of the PS domains appears less regular, which may be due to the cracking of the PS spherical domains. Infrared analysis was performed to confirm the formation of PS–PA1010 graft copolymer during the blending process. The notched impact toughness of the compatibilized blends shows a maximum which is almost triple that of the binary blend at approximately 5 wt% of the CPS addition based on the amount of PS. © 1999 Society of Chemical Industry     

高分子共混物的相结构对力学性能的影响

本文以聚丙烯 尼龙1010(PP PA1010)共混体系为模型研究了高分子共混物的微观相结构对宏观力学性能的影响,并通过微观力学模型来预测共混物的拉伸强度。通过光散射试验和扫描电镜结果讨论了两相平均弦长比(L1 L2)以及分散相的质心相关距(D)与拉伸性能的关系。结果表明,当分散相一定时,拉伸强度随两相相对尺寸的增大和分散相颗粒相关性的减弱而减小。理论计算的分散相最小体积分数与相形貌观察的结果非常接近,添加增容剂的体系,由于改善了界面粘合,使理论预测值与试验结果很好的吻合。     

SPET离聚物与尼龙6共混纤维结构性能的研究

将分子链相对较为刚性的ＳＰＥＴ离聚物与尼龙６(ＰＡ６)进行共混纺丝实验,通过ＷＡＸＤ、ＤＳＣ、Ｓ－Ｓ曲线的测定等方法着重考察了体系中离子基团的引入对共混物结晶性、晶体结构、力学性能等的影响,结果表明:离聚物的存在有利于体系结晶成核,但也在一定程度上破坏了晶区的完善性。ＳＰＥＴ/ＰＡ６共混纤维的初始模量随其所含离聚物量的增多而下降。     

离聚体对PA1010／PS共混体系相形态及结晶的影响

采用ＳＥＭ,ＤＳＣ和偏光显微镜等方法研究了磺化聚苯乙烯及其锂盐,锌盐和钠盐（ＰＳ－ＮａＳ）;四种离聚体对ＰＡ１０１０／ＰＳ共混体系相形主结晶性能的影响。结果表明,对于ＰＡ１０１０／ＰＳ（８０／２０）共混体系,四种离聚体的增容效果依次按ＰＳ－ｎａＳ〈ＰＳ－ＺｎＳ〈ＰＳ〈ＺｎＳ〈ＰＳ－ＬｉＳ〈ＰＳ－ＨＳ的顺序递增,表明离聚体的离子交联能力越弱,其增容效果越好。四种离聚体中只有ＰＳ－ＺｎＳ对ＰＡ１０１０     

炭纤维增强热塑性工程塑料的研制

研究炭纤维在尼龙、聚甲醛两种工程塑料中的含量对复合材料抗拉强度、冲击强度及耐磨性的影响，并利用扫描电子显微镜观察复合材料的界面结构。结果表明，在CF／PA1010复合材料中，当炭纤维含量达到30％时，抗拉强度达到127．6MPa，耐磨性显著提高。     

几种复合材料的微观断裂行为研究

利用扫描电子显微镜对玻璃纤维增强尼龙１０１０、碳纤维增强尼龙１０１０、三元乙丙橡胶增韧尼龙６等几种复合材料断裂行为的观察，以及对导致材料破坏因素的讨论表明，增韧增强介质与基本树脂的粘结及分布将直接影响材料的力学性能，而力学性能的变化又将明显地反映在微观断裂形态上。