Y－TYPE ZEOLITES AS MICRO－REACTORS FOR PHOTOCHEMICAL PREPARATION OF LARGE－RING COMPOUNDS

Ｙ－ＴＹＰＥＺＥＯＬＩＴＥＳＡＳＭＩＣＲＯ－ＲＥＡＣＴＯＲＳＦＯＲＰＨＯＴＯＣＨＥＭＩＣＡＬＰＲＥＰＡＲＡＴＩＯＮＯＦＬＡＲＧＥ－ＲＩＮＧＣＯＭＰＯＵＮＤＳ￥ＴＯＮＧＺｈｅｎｈｅ；（ＴＵＮＧＣｈｅｎｈｏ）；ＷＵＬｉｚｈｕ（ＩｎｓｔｉｔｕｔｅｏｆＰｈｏ...     

STUDY ON MECHANISM OF SUPERSENSITIZATION OF SOME ALLOPOLAR TRINUCLEAR CYANINE DYES

ＳＴＵＤＹＯＮＭＥＣＨＡＮＩＳＭＯＦＳＵＰＥＲＳＥＮＳＩＴＩＺＡＴＩＯＮＯＦＳＯＭＥＡＬＬＯＰＯＬＡＲＴＲＩＮＵＣＬＥＡＲＣＹＡＮＩＮＥＤＹＥＳＺＨＡＮＧＪＩＮ－ＬＯＮＧ；ＣＨＥＮＬＩＡＮ－ＳＨＥＮ；ＺＨＵＺＨＥＮＧ－ＨＵＡ（ＲｅｓｅａｒｃｈＩｎｓｔ...     

国内外增强用玻璃纤维的现状与发展

国内外增强用玻璃纤维的现状与发展林树益，高建枢，朱晶莹（南京玻璃纤维研究设计院２１００１２）ＳＴＡＴＵＳＡＮＤＤＥＶＥＬＯＰＭＥＮＴＯＦＲＥＩＮＦＯＲＣＥＤＧＬＡＳＳＦＩＢＥＲＡＴＨＯＭＥＡＮＤＡＢＲＯＡＤ￥ＬｉｎＳｈｕｙｉ；ＧａｏＪｉａｎｓｈｕ；Ｚ...     

SEMICONDUCTING POLYMER DEVICES: NEW DEVELOPMENTS

ＳＥＭＩＣＯＮＤＵＣＴＩＮＧＰＯＬＹＭＥＲＤＥＶＩＣＥＳ：ＮＥＷＤＥＶＥＬＯＰＭＥＮＴＳＹＵＧＡＮＧ（ＩｎｓｔｉｔｕｔｅｆｏｒＰｏｌｙｍｅｒｓａｎｄＯｒｇａｎｉｃＳｏｌｉｄｓＵｎｉｖｅｒｓｉｔｙｏｆＣａｌｉｆｏｒｎｉａａｔＳａｎｔａＢａｒｂａｒａ，Ｓ...     

多产轻烯烃的催化裂化技术

生产轻烯烃是９０年代ＦＣＣ技术发展的趋势。提高反应温度并加入１０％或２０％ＺＳＭ－５，异丁烯产率可分别达到４．５％和５．４％；使用ＲＦＧ催化剂时异丁烯产率可达４．０％，使用ＩｓｏＰｌｕｓ催化剂时异丁烯产率可达４．２％，异戊烯产率可达４．５％。使用ＭＧＧ，ＤＣＣ和ＭＩＩ工艺时，轻烯烃产率高，投资少，见效快，是我国增产轻烯烃的最佳途径。     

镀膜玻璃雪花斑的性质与成因

镀膜玻璃雪花斑的性质与成因蒋玉兰，顾迅（上海交通大学２０００３０）ＴｈｅＮａｔｕｒｅａｎｄＣａｕｓｅｏｆＳｎｏｗＭａｒｋｏｎＶａｃｕｕｍＣｏａｔｅｄＧｌａｓｓｅｓ￥ＪｉａｎｇＹｕｌａｎ；ＧｕＸｕｎ（ＪｉａｏＴｏｎｇＵｎｉｖｅｒｓｉｔｙ，Ｓｈａｎｇｈａ...     

APPLICATION AND FUNDAMENTAL RESEARCH OF ROTATING STREAM TRAY

ＡＰＰＬＩＣＡＴＩＯＮＡＮＤＦＵＮＤＡＭＥＮＴＡＬＲＥＳＥＡＲＣＨＯＦＲＯＴＡＴＩＮＧＳＴＲＥＡＭＴＲＡＹＴａｎＴｉａｎｅｎ；ＳｈｉＨｕｉｘｉａｎｇ；ＣｈｅｎＪｉａｎｍｅｎｇ；ＳｈｉＸｉａｏｒｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＥｎｇｉｎ...     

2000年第五届世界聚酯年会

日期 :2 0 0 0年 11月 2 8日～ 2 0 0 0年 12月 1日 ,地点 :苏黎士 /瑞士 ,信息发布 :Ｍａａｃｋ　商业服务机构聚酯原材料概况概观全球聚酯链 (Ｆ .Ｃｈａｒａｆ,ＭａａｃｋＢｕｓｉｎｅｓｓＳｅｒｖｉｃｅｓ,ＣＨ)对二甲苯的供应、价格和及时满足下一个建设周期 (Ｒ .Ｄｅｎ ｎｙ ,ＵＯＰ ,ＵＳＡ)乘ＥＧ产能的下一个浪潮 :作成或毁掉 (Ｗ .Ｈ .Ｐｅｔｅｒｓ,ＳｈｅｌｌＣｈｅｍｉｃａｌ,ＵＳＡ)催化剂 /添加剂 /工艺发展聚酯链中成本减少的机遇 (Ｒ .Ｇ .Ｇｕａｌｙ ,ＧＴＣＴｅｃｈｎｏｌｏｇｙ,ＵＳＡ)合成聚酯催化剂的展开 :聚酯工业…     

CALIXE［4］ARENE AS A TEMPLATE FOR CONTROLLING REGIOCHEMISTRY OF PHOTODIMERIZATION OF 9－SUBSTITUTED AN

ＣＡＬＩＸＥ［４］ＡＲＥＮＥＡＳＡＴＥＭＰＬＡＴＥＦＯＲＣＯＮＴＲＯＬＬＩＮＧＲＥＧＩＯＣＨＥＭＩＳＴＲＹＯＦＰＨＯＴＯＤＩＭＥＲＩＺＡＴＩＯＮＯＦ９－ＳＵＢＳＴＩＴＵＴＥＤＡＮＴＨＲＡＣＥＮＥＬＩＹＩ；ＴＯＮＧＺＨＥＮ－ＨＥ（ＣＨＥＮ－ＨＯＴＵＮＧ...     

镀槽材料污染化学镀镍液的事故

镀槽材料污染化学镀镍液的事故郭志军，苏敏，麦青（兰州石油机械研究所邮码：７３００５０）ＣｏｎｔａｍｉｎａｔｉｏｎｏｆＥｌｅｃｔｒｏｌｅｓｓＮｉｃｋｅｌＰｌａｔｉｎｇＳｏｌｕｔｉｏｎｆｒｏｍＴａｎｋＬｉｎｉｎｇ￥ＧＵＯＺｈｉｊｕｎ；ＳＵＭｉｎ；ＭＡＩＱ...     

玻纤增强ABS复合材料的研究

以短切玻璃纤维为改性填料,对通用ABS进行共混改性。结果表明:ABS 玻纤复合材料的拉伸强度、弯曲强度、硬度以及热变形温度都随共混体系中玻纤含量的增加而显著提高,而材料的冲击强度和断裂伸长率却随之下降。此外,玻纤的长径比和共混挤出温度对材料的机械性能也有很大的影响。     

涂料用导电玻璃纤维填料的制备

采用化学镀方法在玻璃纤维上沉积金属镀层,制得镀金属的导电玻璃纤维,用作导电涂料的填料。简述镀镍－磷、镀铜－磷和镀镍－铜－磷玻璃纤维的工艺流程。讨论了化学镀的反应条件对导电玻璃纤维性能的影响。     

Study on the long-term behaviour of glass fibre in the tensile stress field

Glass fibre is a random network structure composed of [SiO₄] tetrahedra. The structure contains a large number of defects, which act as crack initiation points. Under tensile stress, cracks undergo crack initiation, stable propagation, failure propagation, and fracture, and the stress that begins after unstable propagation is called the critical fracture stress. When the stress is less than the critical value, the crack is subject to the force of chemical bonds during the crack propagation process, and crack arrest occurs. When the stress is greater than the critical value, the glass fibre will undergo destructive fracture. In this paper, long-term tensile tests were carried out on glass fibre and a glass fibre composite under different constant tensile stress conditions. The fracture times of the glass fibre and glass fibre composite under different tensile stresses were obtained, the critical fracture stress of glass fibre was inferred, and the fracture mechanism was explained.     

湿法磷酸生产中常用的非金属材料:Ⅲ.热固性增强塑料

阐述热固性增强塑料的玻璃纤维、合成纤维、酚醛树脂、呋喃树脂、环氧树脂、不饱和聚酯树脂的性能;由其为原料制成的玻璃钢产品在磷酸工业中的应用。对在不同工况下使用的玻璃钢产品,其纤维和树脂胶的选用提出了看法。在磷酸工业中使用玻璃钢产品,只要选材得当,可满足生产要求。     

Functional interphases with multi-walled carbon nanotubes in glass fibre/epoxy composites

The interphase between reinforcing fibre and matrix is a controlling element in composite performance. We deposited multi-walled carbon nanotubes (MWCNTs) onto electrically insulating glass fibre surfaces leading to the formation of semiconductive MWCNT-glass fibres and in turn multifunctional fibre/polymer interphases. The deposition process of MWCNTs onto glass fibre surfaces involved both electrophoretic deposition (EPD) and conventional dip coating methods. The EPD coating method produces a more homogeneous and continuous nanotube distribution on the glass fibre surface compared with the dip coating. According to fragmentation test results, the interphase with a small number of heterogeneous MWCNTs in the EPD fibre/epoxy composites, mimicking a biological bone structure, can remarkably improve the interfacial shear strength. We found that the semiconductive interphase results in a high sensitivity of the electrical resistance to the tensile strain of single glass fibre model composites. This material provides a possible in situ mechanical load sensor and early warning of fibre composite damage.     

异淀粉酶水解豌豆淀粉及其在玻纤浸润中的应用

该文研究了豌豆淀粉的异淀粉酶水解过程,并将其水解产物用作玻纤浸润剂。结果表明,异淀粉酶对豌豆淀粉的水解采用点蚀和劈裂两种方式进行。水解对淀粉颗粒聚集行为有影响,具体表现为粒度、X射线衍射强度和黏度的波动。当酶解温度为50℃,酶解时间30 h,所得酶解淀粉液表面张力可降至40 mN/m,与玻纤临界表面张力30 mN/m接近。同时,酶解破坏使更多的淀粉羟基被暴露出来,因此,水解产物可以在玻纤表面轻易铺展,并与玻纤表面牢固结合。直接以水解淀粉悬浊液为浸润剂,玻纤拉丝过程可顺利进行,且能在玻纤表面形成均匀的保护膜,所得68 tex玻纤断裂强力平均达到25.0 N。     

长玻纤增强PET复合材料的力学性能研究

采用自制的浸润装置，以PET浸渍长波纤，经切粒后得到长度为6mm的长纤维增强PET预浸料切片，经一定温度热处理，可得到长纤增强PET复合材料。研究了注塑样条中玻纤含量对其力学性能及玻纤长度分布的影响，并采用SEM观察了长玻纤增强PET注塑样条的断面形貌。结果表明，复合材料力学性能随玻璃纤维含量的提高均有不同程度的提高，当玻纤的质量分数在40％～50％时，力学性能基本达到最佳，且由本方法制备的长玻纤增强PET复合材料的力学性能已达到并超过了国外同类产品的水平。     

Synergistic effect of glass fibre and Al powder on the mechanical properties of glass-ceramics

To explore the synergistic effect of glass fibre and Al powder on the mechanical properties of glass-ceramics, blast furnace slag was chosen as the main material, and glass fibre and Al powder as reinforcement materials. The phase compositions, microstructures, compressive properties, and apparent density of the glass-ceramics with varying quantities of glass fibre and Al powder were investigated. The experimental results indicated that Al powder could exist as a simple substance in glass-ceramics and form a dense net coating on the surface of blast furnace slag to improve the plasticity of the glass-ceramic. The glass fibre had better reinforcement effect than Al powder because of its extremely high mechanical strength. The plasticity of glass-ceramics, however, severely decreased; the glass-ceramics exhibited brittle failure during compression. A slight increase in the content of CaSi₂ and SiO₂ in the glass-ceramics was closely related to the addition of glass fibre. Considering safety and economy, glass-ceramics with 6% Al and 14% glass fibre (S4) have the best mechanical properties. The compressive strength, strain at maximum force, and apparent density were 40?MPa, 19% and 1.974?g/cm³, respectively.     

Production technology of sewn cloth made of glass fibres on “malimo” machines

Methods of fabricating sewn cloth with a low surface density made of glass fibres of different structures are examined. The technological process according to scheme 2 is recommended in production of thread-sewn fibre glass cloth; untwisted glass fibre or glass fibre with up to 30 tw./m can be used as the sewn material. Moscow State Textile Academy; Steklovolokno Co., Makhachkala. Translated fromKhimicheskie Volokna, No. 1, pp. 34–36, January–February, 1999.     

长玻纤填充尼龙6复合材料研究

采用熔体浸渍工艺制备长玻纤增强PA6复合材料。研究了玻纤种类、玻纤含量长度、界面改性等对复合材料力学性能及电性能的影响。试验结果表明：在玻纤含量35％时,切粒长度7mm,粒径3．5mm时,复合材料表现出优异的力学性能和电性能。