聚氨酯防水材料合成工艺的研究

主要介绍了聚氨酯防火材料的合成工艺，并对其反应原理及影响因素进行了说明，还介绍了其主要性能指标。     

HD-91型护堵剂的研究与应用

本文介绍了HD-91型护堵剂的主要成份及其应用，并对其性能与作用机理作了全面分析，介绍了其使用效果。     

PZT在注塑模腔压力测量中的应用

介绍了使用锆钛酸铅(PZT)作为感应元件的注塑模腔压力传感器，主要介绍其结构原理，以及部分制作问题，并分析其优缺点。     

苯甲酰氯的制造与应用

介绍了苯甲酰氯的性质，制造方法，并对其在合成材料助剂，医药，农药染料等方面的应用做了介绍。     

多弯曲角件冲模设计

介绍了多弯曲角件冲模，着重介绍了其结构、工作过程，并阐明了模具设计及注意事项。     

锂离子电池及其材料

介绍了锂离子电池的基本原理及特点，锂离子电池的开发过程和制造过程，重点从锂离子电池的正极材料，负极材料，电解液，粘合剂，隔膜等组成部分从化工生产的角度介绍了锂离子电池。并简要介绍了锂离子电池及其材料在我国的发展现状，展望了其发展前景。     

酚醛—环氧乙烯基树脂的性能及在耐高温强腐蚀场合中的应用

本文简要介绍了酚醛－环氧乙烯基树脂的性能特点，并介绍了其在耐高温，强腐蚀场合的应用。     

甲乙酮生产,应用及市场

简要介绍了甲乙酮的生产方法，重点介绍了我国甲乙酮的生产及消费情况，并对其市场进行了预测。     

英国发明新型炼胶机

介绍了英国发明的新型炼胶机，对该设备对现有设备的混炼效果进行了比较，并介绍了其工作原理。     

2-乙基己酸的研究现状与市场前景

重点介绍了国内外2－乙基已酸目前的研究进展，并对其物理性质，用途，生产状况及市场前景作了简单介绍。     

耐热性聚酰胺９Ｔ

介绍了耐热性聚酰胺９Ｔ（ＰＡ９Ｔ）的开发、制造技术、特性和用途,并与ＰＡ４６进行了性能对比,结果发现,ＰＡ９Ｔ的吸水率低,结晶性高,耐热性、韧性、耐药品性及尺寸稳定性均佳。     

磷氮阻燃剂/协效剂对PA9T的阻燃性、热稳定性的影响

探究二乙基次磷酸铝(ADP)、三聚氰胺聚磷酸盐(MPP)及不同协效剂(勃姆石、无水硼酸锌(ZnB)、锡酸锌、三氧化钼)对PA9T阻燃性能的影响,且定量分析阻燃体系的分散性,同时分析阻燃体系的阻燃机理。结果表明:当m(ADP)∶m(MPP)=2∶1,PA9T/ADP/MPP的LOI值为38.5%,UL-94达到V-0级,阻燃效果最佳。PA9T/13.3%ADP/6.7%MPP的实际残炭率高于理论残炭率,表明ADP/MPP的引入促使PA9T在凝聚相交联成炭。协效剂对PA9T阻燃性能的影响程度排序为:ZnB>三氧化钼>锡酸锌>勃姆石。PA9T/FR/ZnB复合材料的烟气释放最低,燃烧后碳氢化合物的释放量显著降低,CO₂释放量提高。复合材料燃烧后形成连续、致密的炭层,且炭层中存在磷酸类物质、碳氧化物及铝氧化物等,具有典型的凝聚相阻燃机理。     

Fabrication of polyamide 12T micro-cellular foams with ultra-high compressive strength via in situ polytetrafluoroethylene fibrillation using supercritical carbon dioxide foaming

The development of micro-cellular foams with ultra-high compressive strength and high volume expansion ratio (VER) is a challenging task. Herein, polyamide 12T (PA12T) micro-cellular foams with ultra-high compressive strength were fabricated via in situ polytetrafluoroethylene (PTFE) fibrillation using supercritical CO₂ foaming technology and a chain extender. The resulting branched structure showed considerably improved viscoelasticity and foaming performance, thus improving the cell morphology of the PA12T foam and exhibiting high VER. The PTFE fibrillation network induced melt strength enhancement, crystallization nucleation, and cell nucleation. The branched PA12T foam with 1.5 wt% PTFE exhibited the smallest cell diameter (15 μm) and highest cell density (3 × 10⁹ cells/cm³). The compressive strength of the foam (0.50 MPa under 5% strain) was 70% higher than that of pure PA12T. This research offers an effective method for producing high-VER PA12T foams with adjustable micro-cellular structures and excellent mechanical properties.     

新型耐热尼龙

着重介绍了新型耐热尼龙PA46、PA6T、PA9T等的结构及特性，并与其他工程塑料的性能进行了比较。     

耐高温聚酰胺的性能及应用

列举了几种主要耐高温聚酰胺(PA)的结构,介绍了耐高温PA的主要性能,如耐热性、加工性、吸水性、结晶性、回流焊性及化学性能。详细叙述了主要耐高温PA如PA46、PA6T、PA9T、PA10T的各种性能优势及主要应用。最后,指出耐高温PA在汽车工业、电子电气工业领域具有很好的应用前景。     

Environment‐friendly synthesis of long chain semiaromatic polyamides with high heat resistance

Long chain semiaromatic polyamides have been synthesized by the reactions of terephthalic acid with long chain aliphatic diamines, and characterized by infrared spectrum, nuclear magnetic resonance and elemental analysis. The thermal behaviors were studied by differential scanning calorimetry analysis and thermogravimetric analysis. The resultant polyamides have intrinsic viscosity ranging from 1.75 to 1.93 dLg^?1. The solubility, dynamic mechanical and mechanical properties of the polyamides have also been investigated. The mechanical properties and heat resistance of long chain semiaromatic polyamides were compared with those of PA9T. PA10T has the advantages of low cost and preparation from environmental friendly solvents and possesses the similar mechanical properties and heat resistance compared to PA9T. The long chain semiaromatic polyamides are a class of promising, heat‐resisting and processability engineering plastics. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Thermal stability and thermal degradation kinetics of short and long glass fiber reinforced PA10T composites

In this work, the long glass fiber reinforced poly(decamethylene terephthalanide) (PA10T/LGF) composites and short glass fiber reinforced PA10T (PA10T/SGF) composites were prepared by two different extrusion processing methods, respectively. The results of mechanical properties reveal the introduction of glass fiber can improve the performance of the material, and the LGF reinforced PA10T composites can achieve much higher performance than the SGF reinforced ones at the same level of fiber contents. The thermal stabilities of neat PA10T, PA10T/SGF, and PA10T/LGF are investigated by nonisothermal TG analysis. The thermal degradation kinetics is introduced by using Kissinger and Flynn‐Wall‐Ozawa methods and the thermal degradation mechanism functions of the samples are calculated by the Coats‐Redfem model. The results show that the thermal stabilities of PA10T/SGF and neat PA10T are better than that of PA10T/LGF. In addition, the incorporation of glass fiber into PA10T do not have much effect on the reaction mechanism type of thermal degradation compared with that neat PA10T. Furthermore, the thermal stability analysis of the composites is verified by the computed results of Gibbs free energy (ΔG^#). POLYM. ENG. SCI., 59:246–253, 2019. © 2018 Society of Plastics Engineers     

High-performances biobased semi-aromatic polyamide 10T copolymerized with silicone monomers

A novel silicone monomer modified poly(decamethylene terephthalamide) PA10T is synthesized from 1,10-decanediamine (DMD), terephthalic acid, and 1,3-bis(3-aminopropyl)tetramethyldisiloxane (DS2). The chemical structure of the product is characterized using Fourier transform infrared spectrometry and nuclear magnetic resonance. The crystallization behavior, thermal properties, and mechanical properties of PA10T are also analyzed. Copolymerization of PA10T with DS2 results in reduced crystallinity and thermal properties, but to a lesser extent than when PA10T is modified with aliphatic polyamide. With increased DS2 content, the tensile strength of PA10T decreases gradually, while the elongation at break and impact strength increase significantly, indicating that the toughness of PA10T has been improved.     

PA6T/1010共聚物热性能研究

以对苯二甲酸、己二胺和癸二酸、癸二胺为原料合成了新型半芳香PA6T/1010共聚物,通过差示扫描量热仪(DSC)、熔点测定仪和热重分析仪(TG)对不同组成PA6T/1010的熔融行为、结晶行为和热稳定性进行了表征。结果表明:当PA6T含量大于40%时,PA6T/1010共聚物的结晶性能明显下降,熔融峰和结晶峰均消失;当PA6T含量为40%时,共聚物共熔点降至165℃;PA6T/1010共聚物的热降解过程为一步降解,热降解温度超过400℃。     

玻璃纤维增强生物基PA5T/56的制备与性能

通过物理共混改性制备了不同玻璃纤维含量的聚对苯二甲酰戊二胺/聚己二酰戊二胺(PA5T/56)复合材料,研究了不同玻璃纤维含量对复合材料力学性能、热性能、吸水率和结晶行为的影响.结果 表明,随着玻璃纤维含量的增加,复合材料的力学性能、热稳定性得到大幅度提升,而吸水率逐渐降低.当玻璃纤维含量的质量分数达到40％时,PA5T...