浅色高纯聚苯乙烯磺酸钠阳离子交换树脂的制备

聚苯乙烯磺酸钠阳离子交换树脂是降血钾树脂。用市售的经常规磺化工艺生产的聚苯乙烯磺酸钠阳离子交换树脂(SPSR)为原料,经过脱除苯乙烯、漂白和净化联合工艺处理,得到了浅色高纯SPSR。该浅色树脂达到日本药典(第14版)规定的药用SPSR标准。     

不同工艺制备聚苯乙烯树脂乳液补强天然胶乳的研究

采用不同制备工艺研究聚苯乙烯树脂乳液对天然胶乳的胶体性质、成膜性能及其硫化胶膜力学性能的影响。引入相对补强度（ ＲＲＤ） 来表征天然胶乳胶膜的补强效果。实验结果表明：聚苯乙烯树脂乳液对天然胶乳具有良好的补强作用；采用就地聚合工艺所得的补强胶乳克服了预聚并用工艺所容易造成的增稠现象；采用预备并用工艺所得的补强胶乳仍具有良好的成膜效果。     

相转移催化合成对硝基苯甲醚

评述了聚乙二醇、聚苯乙烯固载聚乙二醇树脂、季铵盐、聚苯乙烯固载季铵盐树脂、氯化聚氯乙烯固载三乙胺树脂、聚苯乙烯固载吡啶树脂、聚氯乙烯固载吡啶树脂、聚氯乙烯固载多乙烯多胺树脂和聚苯乙烯固载三乙醇胺树脂催化合成对硝基苯甲醚的方法。     

脱氢枞胺键合交联聚苯乙烯树脂的制法和应用

分3个步骤制备脱氢枞胺键合交联聚苯乙烯树脂：醚化反应，双键环氧化和脱氢枞胺与环氧基开环反应。为了提高树脂中功能基的转化率，针对每一步合成做了正交实验，得出了最佳工艺条件。采用红外光谱对每一步合成产物进行结构表征。并用脱氢枞胺键合交联聚苯乙烯树脂进行对映体分离的初步应用。     

透明高抗冲聚苯乙烯树脂的工业化试验

在5kt／a高抗冲聚苯乙烯树脂装置上,以1,1-双(叔丁基过氧基)环己烷为引发剂、苯乙烯为单体、丁二烯-苯乙烯嵌段共聚物(简称K树脂)为增韧剂,采用自由基聚合工艺生产了透明高抗冲聚苯乙烯(HT-IPS)树脂,考察了HT-IPS树脂的微观结构、相对分子质量及其分布、流变性能、接枝反应程度、物理机械性能和光学性能,讨论了影响HT-IPS树脂结构及性能的因素。结果表明,HT-IPS树脂具有微观相分离结构,聚丁二烯链段为分散相、聚苯乙烯链段为连续相;HT-IPS树脂的流动性能略差于高抗冲聚苯乙烯树脂,且随着K树脂用量的增加,其流动性能变差,K树脂用量应控制在15份以下;在聚丁二烯链段的主链和侧链均发生了接枝反应,HT-IPS树脂具有较高的弯曲强度、弹性模量和拉伸强度,其光学性能、流变性能良好,但冲击强度较低,扯断伸长率较小。     

透明高抗冲聚苯乙烯树脂的制备及研究进展

透明高抗冲聚苯乙烯（THIPS）树脂是一种市场前景较好的新型树脂,本文对THIPS树脂的制备原理和研究开发进展进行了介绍和评述,比较了共混法和共聚法两种制备工艺,认为共聚工艺是一种较好的生产工艺,同时讨论了共聚工艺中两种影响产品透明性和强度主要的因素--基体树脂和橡胶。     

国外塑料专利

正专利名称:可发性聚苯乙烯树脂颗粒和聚苯乙烯树脂预发泡粒子申请公布号:US2016229974(A1)申请公布日:2016.08.11该发明提及了一种可发性聚苯乙烯树脂颗粒,其是将含有阻燃剂和发泡剂的聚苯乙烯树脂进行加工制成可发性聚苯乙烯树脂颗粒。所述阻燃剂的分子     

XPS专用料PS 680X的研制与开发

利用5万t/a聚苯乙烯装置开发挤塑聚苯乙烯泡沫塑料(XPS)板材专用料PS 680X,确定了树脂的合成工艺,并对树脂的物理力学性能和加工性能进行了表征。结果表明:PS 680X具有较高的分子量和适当的分子量分布范围,综合性能优良,适合于XPS的生产要求。     

聚苯乙烯树脂催化羟醛缩合研究进展

近年来,聚苯乙烯树脂作为重要固体碱催化剂得到了广泛应用和发展。本文在对聚苯乙烯树脂催化羟醛缩合反应研究进展进行较为全面综述的基础上,重点讨论了聚苯乙烯树脂本身性质及其修饰对羟醛缩合反应的影响,并由此展望了未来聚苯乙烯树脂可能的研究方向。     

Advance in polystyrene resins for catalytic aldol condensation

近年来,聚苯乙烯树脂作为重要固体碱催化剂得到了广泛应用和发展。本文在对聚苯乙烯树脂催化羟醛缩合反应研究进展进行较为全面综述的基础上,重点讨论了聚苯乙烯树脂本身性质及其修饰对羟醛缩合反应的影响,并由此展望了未来聚苯乙烯树脂可能的研究方向。     

聚苯乙烯生产工艺与经济分析

分析由汕头海洋集团公司和广东省石油化工设计院(S.O.E)自主开发的聚苯乙烯生产技术与其它连续本体法生产聚苯乙烯工艺的异同;并通过经济评价验证S.O.E聚苯乙烯工艺技术的经济优势。     

A study on new polymerization technology of styrene

The classic polymerization technology of polystyrene is a high‐cost and nonfriendly environmental technology. Furthermore, the weight‐average molecular weight of polystyrene is hard to enhance up to 400,000 in the classic polymerization technology. The disadvantages limit the growth rate of polystyrene. The solution for increasing the growth rate of polystyrene lies in new technology. The reactive extrusion process of polystyrene was studied in detail and the whole reactive extrusion process of polystyrene was obtained. By means of controlling the flow rate of styrene and the initiator and the screw rotational speed, samples of polystyrene with different molecular weights were synthesized by the twin‐screw extruder. The properties of synthesized polystyrene with different molecular weights were studied; the mechanic properties of polystyrene will increase with an increase of the weight average molecular weight of polystyrene. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2130–2135, 2002     

Effect of dicumyl peroxide on photo-oxidation of polystyrene films: 2

The effect of dicumyl peroxide on the photo-oxidation of polystyrene film has been studied using light of a wavelength absorbed by the polystyrene—oxygen complex. Energy transfer from the excited polystyrene—oxygen complex to the peroxide present in polystyrene film was considered to be the process of most importance in the initiation of polystyrene long-wave photo-oxidation.     

双螺杆反应挤出聚苯乙烯性能的研究

对反应挤出聚苯乙烯工艺过程进行了研究,通过控制苯乙烯和引发剂的质量流量从而控制合成不同相对分子质量的聚苯乙烯,并对不同相对分子质量的聚苯乙烯的性能进行了研究。     

纳米聚合物微球对石蜡的表面修饰

采用乳液聚合法制备得到单分散且粒径为80～100nm的聚苯乙烯(PS)种子微球,使聚苯乙烯与石蜡进行共聚,合成石蜡聚苯乙烯微球.通过实验对微球合成的因素进行分析,找到了影响微球合成产率及粒径分布的因素.结果表明,乳液聚合法合成的聚苯乙烯粒径较为均匀,分散性好.通过聚苯乙烯对石蜡的修饰得到微米级粒径、分布均匀且高产率的石...     

Anomalous transport of hydrocarbons in polystyrene

The transport kinetics and equilibrium concentrations of n-pentane at high penetrant activities in cast, annealed polystyrene were determined and compared with similar measurements in biaxially-oriented polystyrene. The rate of Case II (relaxation-controlled) sorption in biaxially-oriented polystyrene is three to four times faster than the sorption rate in cast, annealed polystyrene. The Case II sorption process in biaxially-oriented polystyrene is more highly temperature dependent than in cast, annealed film. The higher activation energies coupled with the larger relaxation-controlled sorption rates in biaxially-oriented polystyrene imply the involvement of larger polymer segments in the rate controlling polymer relaxations. The sorption in cast, annealed polystyrene was a position-dependent relaxation controlled transport process; in contrast the sorption in biaxially oriented polystyrene, albeit relaxation-controlled, was not position dependent. The position dependence of the Case II sorption appears to be a consequence of the presence of residual benzene in the film which accelerates the rate-determining relaxations. Desorption measurements at very low penetrant activities were quite similar for both biaxially oriented and cast, annealed polystyrene. The desorption kinetics were Fickian and were only a weak function of polymer orientation at these low activities.     

Development of a Separation Sequence for the Integration of a Styrene Recyclate into Polystyrene Production

This work addresses the processing of a polystyrene recyclate stream into polystyrene synthesis on an industrial scale. Evaluating the energetic demand of the separation process with the following reintegration of the recyclate stream shows a significantly reduced specific energy input compared to conventional polystyrene synthesis. Therefore, recycling polystyrene by pyrolysis and thermal separation shows a considerable potential as a tool for industrial circular production in the plastics sector.     

基于聚苯乙烯的Ecotect模型在室内设计中的应用

通过构建Ecotect模型,对聚苯乙烯在室内设计中的应用进行了研究。结果表明:聚苯乙烯泡沫塑料的热导率和压缩强度随着其密度的增加而增大;聚苯乙烯泡沫塑料的热解区间较宽,使燃烧过程的放热速率得到减缓,起到显著的抑制燃烧作用;室内墙体材料使用聚苯乙烯泡沫塑料作为保温材料,其所拥有的冷负荷和热负荷具有极大的优势。     

废旧聚苯乙烯与发泡聚苯乙烯回用的有效途径

论述了废旧聚苯乙烯和发泡聚苯乙烯的资源回用技术,及其在聚苯乙烯、苯乙烯、汽油、柴油、对硝基苯甲酸、涂料、绝缘材料、农业、养殖业、胶粘剂等方面的应用,并可控制“白色污染”,经济效益与社会效益显著。     

十氢萘溶液中聚苯乙烯与常规载体的作用过程研究

研究了十氢萘溶液中载体γ-Al2O3、SiO2与聚苯乙烯的作用过程,探讨了吸附温度、聚苯乙烯初始浓度、吸附时间对吸附的影响。结果表明,载体对聚苯乙烯的吸附量随温度的升高而增大,随聚苯乙烯初始浓度的增大而先增大后变小,随时间的延长而增大。聚苯乙烯在吸附过程中经历构象变化,最后在载体上呈现拉伸状椭圆形分子结构。