国内外聚酰胺现状与展望

回顾了聚酰胺（PA）的发展历程,阐述了PA生产技术的最新进展,分析了PA市场情况。预计2010年世界聚酰胺的生产能力和需求量将分别达到4．6Mt和5．3Mt。。提出了产业发展建议,认为今后PA工程塑料的发展必须高起点、大规模,提高产品质量、增强抗风险能力,并加快PA改性技术研究。     

马来酸酐接枝三元乙丙共聚物对PA/TLCP共混物摩擦磨损行为的影响

采用MM-2000型摩擦磨损试验机评价了PA/TLCP二元共混物的摩擦学性能;同时考察了马来酸酐接枝三元乙丙共聚物对PA/TLCP二元共混物摩擦学性能的影响.分析测试结果表明:引入马来酸酐接枝三元乙丙共聚物为相容剂能够有效地提高界面增容作用,材料力学性能提高;同时,相容剂的加入,改善TLCP与基体PA66的结合强度,提高了共混物的耐磨性,也有利于转移膜的形成.     

红磷阻燃剂在尼龙—66工程塑料中的应用

简介含红磷阻燃剂在尼龙－６６中的应用,含磷高的红磷阻燃剂用于加工温度较高的尼龙－６６具有较平衡的阻燃和耐漏电性。     

Synergistic effect of melamine polyphosphate with macromolecular charring agent novolac in wollastonite filled PA66

In this article, macromolecular charring agent linear novolac (NA) was served as a synergist with nitrogen‐phosphorous flame retardant melamine polyphosphate (MPP) for the flame‐resistance of wollastonite (WT) filled polyamide 66 (PA66). The investigations showed that MPP/NA system possessed obvious synergistic effects by increasing the charring rate and amount, therefore, showing much higher flame retardancy than the filled PA66 flame retarded with MPP alone. The corresponding char layer structure of MPP/WT/PA66 and MPP/NA/WT/PA66 was investigated and their difference was analyzed. In addition, as a multifunctional additive, NA could act as a compatibilizer and lubricant in the system, and endowed the material with improved mechanical performance and processability. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

Toughened nylon66/nylon6 ternary nanocomposites by elastomers

The elastomer toughening of PA66/PA6 nanocomposites prepared from the organic modified montmorillonite (OMMT) was examined as a means of balancing stiffness/strength versus toughness/ductility. Several different formulations varying in OMMT content were made by mixing of PA6 and OMMT as a master‐batch and then blending it with PA66 and different elastomers in a twin screw extruder. In this sequence, the OMMT layers were well exfoliated in the nylon alloy matrix. The introduction of silicate layers with PA6 induced the appearance of the γ crystal phase in the nanocomposites, which is unstable and seldom appears in PA66 at room temperature and it further affected the morphology and dispersion of rubber phase resulting in much smaller rubber particles. The incorporation of POE‐g‐MA particles toughened the nanocomposites markedly, but the tensile modulus and strength were both reduced. Conversely, the use of OMMT increased the modulus but decreased the fracture toughness. The nanocomposites exhibited balanced stiffness and toughness. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

金属基复合材料的摩擦学性能及结合强度试验研究

以聚酰胺66（PA66）、聚苯硫醚(PPS) 及65Mn钢板为主要原料,制备了一系列不同配比的金属基复合材料,并对这些材料进行不同条件下的摩擦学性能试验,最后通过结合强度试验来分析材料间的结合强度。结果表明,复合材料的摩擦因数及磨损速率随着聚酰胺66的增加而降低;同种材料的摩擦系数及磨损速率随着载荷和对摩速度的增加而先增大后减小;结合强度试验表明金属基复合材料的结合强度随着聚苯硫醚的增加而逐渐增大。     

PVA/UiO-66复合薄膜的制备及性能表征

采用溶剂热法合成出了金属有机骨架材料UiO-66,并通过流延法制备出了一系列PVA/UiO-66复合膜.通过红外光谱仪(FTIR)、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、接触角、溶胀度、拉伸强度和透光性等表征方法,详细研究了UiO-66含量对复合膜各种物性的影响.结果表明,PVA在经富马酸交联后,耐水溶胀性...     

热裂解气质联用鉴别PA56、PA66和PA6

采用热裂解气质联用（Py-GC/MS）方法鉴别聚酰胺56（PA56）、聚酰胺66（PA66）和聚酰胺6（PA6）及其共混物。结果表明,在550 ℃裂解温度下,PA56与PA66相对丰度100 %的峰为环戊酮,分别具有特征裂解产物1,8-二氮杂环十三烷-2,7?二酮和1,8-二氮杂环十四烷-2,7-二酮,PA6相对丰度100 %的峰为己内酰胺;此方法可用于快速鉴别PA56、PA66和PA6的工业初级品,并成功检出了PA6/PA56共混物、PA6/PA66改性共混物与改性PA66。     

锦纶6与锦纶66弹力丝织袜过程中性能的差别

本文通过织造、染色、定型三个过程的对比，对锦纶6与锦纶66弹力丝在织袜过程中的性能差别进行了分析。     

MAH-g-POE及玻璃纤维对尼龙66的改性研究

采用马来酸酐接枝乙烯-1-辛烯共聚物(MAH-g-POE)及玻璃纤维(GF)对尼龙(PA)66进行共混改性,对共混材料的力学性能和微观结构进行了分析表征。结果表明:POE-g-MAH可改善PA 66/POE、PA 66/GF的界面结合,增强体系的相容性,是PA 66/POE-g-MAH/GF复合材料一种有效的界面增容剂;当PA 66/POE-g-MAH/GF配比(质量份)为65/10/25时,该复合材料的缺口冲击强度为268 J/m,拉伸强度为130 MPa。