水基高速糊盒机用胶粘剂的研制

合成了与乙烯－醋酸乙烯酯共聚物（VAE）乳液配伍性良好的聚丙烯酸酯乳液，通过正交实验筛选了影响胶粘剂的粘接强度的各种组分的用量，得到了最佳的胶粘剂配方：DR树脂13．5份，萜烯树脂14．3份，VAE乳液32．9份，聚现烯酸酯乳液28．7份，其剥离强度达到0．373kN.m^-1。该胶粘剂适用于高速自动糊盒机上复膜包装盒的粘合。     

加拿大宝兰山公司EPDM胶料配方精选

配方（质量份）：Polysar,EPDM545 100,炭黑（N770）225，石蜡油100，低分子聚乙烯5，硬脂配1，氧化锌5，促M0．5，TMTM2，硫黄1．5。     

改性共聚酰胺热熔胶的研制

在合成共聚酰胺的基础上 ,利用环氧树脂、聚丁二烯、聚乙烯等对其改性而制得改性共聚酰胺热熔胶。该胶具有良好的粘接力、浸润性和优异的抗油污能力 :尼龙布剥离强度 34N·(2 5mm) 1,聚氨酯胶布剥离强度 2 8N·(2 5mm) 1。可用于制备宇航抗浸服缝线热封用热熔胶带     

环保型乳液型纸塑复膜胶研制

介绍了一种共聚改性醋酸乙烯-乙烯-丙烯酸异辛酯共聚乳液的合成过程及其性能和应用情况, 该乳液应用于聚丙烯(BOPP)或涤纶(PET)薄膜与纸张印刷品复合粘接,达到了良好的效果,粘接性能优良, 180°剥离强度达0．4 N/mm,即油墨层剥离的效果,且印刷品无气泡、变色现象。     

室温固化转移型有机硅压敏胶研究

研制了一种室温固化的可转移有机硅压敏胶，该胶与炸药PBX－1，PBX－2，铝块的剥离强度分别为5.04N/25mm,3.07N/25mm,17N/25mm，与三种炸药PBX－1，PBX－2，JB9014的相容性满足军标要求，该胶转移至硅橡胶泡沫垫层上后，在60℃下加压粘贴于铝块上保持48h后剥离，无压敏胶留于粘接部位。     

金属橡胶热硫化型底胶的研制

研制了一种酚醛一橡胶型底胶,探讨了主要组分对底胶性能的影响。实验结果表明,以n甲醛：n苯酚：n氮氧化钾=2．25：1：0．1,在65℃／3h合成的甲阶酚醛树脂具有高羟基含量,能满足底胶主体树脂要求;当该酚醛树脂100质量份、氯化橡胶60~80份、硅烷偶联剂10-15份、钛白粉30~35份时底胶具有较高强度,扯离强度40MPa以上,剥离强度3．0kN／m以上,且试件破坏形式主要为橡胶内聚破坏。该底胶作为单涂层胶粘剂可实现极性橡胶与金属的热硫化粘接,与相适应的面胶配合构成的双涂层胶接体系还可实现非极性橡胶与金属或复合材料的热硫化粘接,目前已在金属橡胶粘接领域获得了应用。     

聚氨酯共聚乳液

华南理工大学的研究人员制备了一种聚氨酯共聚乳液。它以N－210聚醚、TDI、二羟甲基丙酸、三乙胺、乙二胺、苯乙烯、叔丁基过氧化氢、四乙烯五胶、N·甲基毗咯烷酮等为原料，通过原位聚合法制得。由于疏水性聚苯乙烯的接技，使乳液的耐水性得到了较大的提高。该乳液的平均粒径为193urn。聚氨醋原料与苯乙烯投料质量比为100：20得到的乳液，用于棉帆布粘接，测得剥离强度为223N／cm，粘接制品浸水24h后重量变化率为8．2％。聚氨酯共聚乳液     

聚乙烯接枝马来酸酐共聚物粘接性能的研究

介绍了聚乙烯接枝马来酸酐共聚物与金属的粘接强度，并对接枝率与粘接强度的关系进行了研究。结果发现，接枝共聚物的粘接强度明显优于聚乙烯，它与金属的１８０°剥离强度可达１４０Ｎ／ｃｍ，剪切强度可达１０ＭＰａ，而且，随着接枝共聚物接枝率的增加，其粘接强度缓慢增加，最终达到最大值。     

PE-g-MAH粘接剂的制备及其在阻隔膜中的粘接性能研究

采用双螺杆熔融挤出法制备了马来酸酐接枝聚乙烯(PE-g-MAH)。探讨了在以基体树脂为线型低密度聚乙烯(LLDPE)的基础上,添加不同种类引发剂含量、不同接枝单体马来酸酐(MAH)含量对制备出PE-g-MAH的性能的影响。同时也探究了不同接枝率、熔融指数以及晶点个数的PE-g-MAH粘接剂在乙烯-乙烯醇共聚物(EVOH)阻隔膜上粘接性能的影响。通过傅里叶变换红外光谱对接枝产物进行定性表征并分析接枝物接枝率,通过熔体流动速率测试分析其流动性,通过180°剥离强度测试分析粘接剂的性能。研究结果表明：当引发剂为过氧化二异丙苯(DCP)且添加0.05份,MAH添加1份时,PE-g-MAH接枝率为0.68%,熔融指数为0.94 g·(10 min)^-1,晶点个数为12,此时材料粘接性能最佳;选择EVOH作为阻隔层粘接,当接枝率为0.68%时,PE-g-MAH的剥离强度达到最大值为69.0 N/cm,PE-g-MAH粘接剂的粘接性能达到相对最佳。     

一种预涂膜(纸塑)复膜粘接乳液的研制

介绍了一种共聚改性型醋酸乙烯酯-叔碳酸乙烯酯(veova10)-丙烯酸酯共聚乳液的合成过程及其性能和应用情况,该乳液应用于聚丙烯(简称BOPP)或涤纶(PET)薄膜的背涂,该预涂膜与纸张印刷品复合粘接,达到了良好的效果,粘接性能优良,剥离强度(180°)达0．6N／mm,即油墨层剥离的效果,且印刷品无气泡、变色现象。     

SIS热塑性弹性体技术及国内工业化展望

介绍了苯乙烯－异戊二烯嵌段共聚物（ＳＩＳ）的特性及其国外生产技术简况；从国内市场需求、技术基础和原料落实等方面展望了ＳＩＳ工业化前景。     

Synthesis and characterization of diblock copolymers based on crystallizable poly(ε-caprolactone) and mesogen-jacketed liquid crystalline polymer block

Diblock copolymers comprising crystallizable poly(ε-caprolactone) and poly{2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene} (PMPCS) were synthesized by ring-opening polymerization of ε-caprolactone and subsequent atom transfer radical polymerization (ATRP) of MPCS. The molecular structure of the copolymers was confirmed by ¹H NMR spectroscopy and GPC. Kinetic study of ATRP showed that the polymerization proceeded in a controlled way up to high conversions. Three series of diblock copolymers were obtained with relatively narrow polydispersity indices (PDI≤1.11) and PCL blocks of 8000, 12,900, and 22,800 molecular weights, respectively. The existence of microphase separation was identified by differential scanning calorimetry (DSC) and directly observed through transmission electron microscopy (TEM). The melting behavior of PCL block was significantly affected by the length of PCL block and composition of PMPCS. The thermotropic liquid crystalline behavior was examined by polarized optical microscopy (POM) and DSC. The result showed that the diblock copolymer exhibited liquid crystalline behavior when the degree of polymerization (DP) of PMPCS block was not less than 44.     

Surface properties of block and graft polystyrene–polydimethylsiloxane copolymers

The surface compositions of a series of polystyrene‐b‐polydimethylsiloxane (PS‐b‐PDMS) and polystyrene‐g‐polydimethylsiloxane (PS‐g‐PDMS) copolymers were investigated using ATR‐FTIR and XPS technique. The results showed that enrichment of PDMS soft segments occurred on the surface of the block copolymers as well as on that of graft copolymers. And the magnitude order of the enrichment was as follows: PS‐b‐PDMS > PS‐g‐PDMS, which was attributed to the facilitating of the movement of the PDMS segments in PS‐b‐PDMS copolymer. Meanwhile, the solvent type and the contact medium had influence on the accumulation of PDMS on the surfaces. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci, 2006     

三种有发展前景的制备热塑性弹性体的方法

综述了三种有发展前景的合成热塑性弹性体的方法,包括阳离子共聚法、大分子单体与小分子单体共聚法及乳液接技共聚法,并讨论了其产物的结构与性能的关联.     

氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物研究进展

概述了氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物(SEBS)国内外生产状况,介绍了SEBS生产工艺技术及其加氢催化剂的开发进展,提出应加强SEBS的改性及应用技术开发,在国内尽快实现SEBS的规模化工业生产。     

Theoretical study on morphology of ABCD 4-miktoarm star block copolymer

A real-space implementation of the self-consistent field theory (SCFT) has been used to study the morphologies of ABCD 4-miktoarm star block copolymers. For the sake of numerical tractability, the morphologies and the phase diagrams of ABCD 4-miktoarm star block copolymers are investigated in two dimensions (2D) by varying the volume fractions of the blocks and the interaction parameters. Many interesting and complex morphologies occur and compared with ABCD linear block copolymers; ABCD 4-miktoarm star block copolymers have more regular disciplines. We found that systems with similar components have similar morphologies and at the weaker segregation, the minority components always cannot separate from the other blocks and they easily dissolve to form one phase with other block(s), but with the increase of the segregation degree (large ), the ordered phases can be well separated. With the help of our computational prediction, experimental researchers can work more purposefully and efficiently.     

Synthesis and thermal characterization of macromonomeric azo initiator containing poly(ε-caprolactone): Styrene and methyl methacrylate copolymerization

Macromonomeric azo initiator containing biodegradable poly(ε-caprolactone, (PCL) was synthesized by the condensation reaction of PCL with 4,4′-azobis(4-cyanopentanoyl chloride) and methacryloyl chloride. This macromonomeric azo initiator (MIM–PCL) was further used in the polymerization of styrene (St) or methylmethacrylate (MMA) via a radical initiated process at 60°C in bulk in order to obtain polystyrene (PS)-b-PCL or poly(methyl methacrylate) (PMMA)-b-PCL crosslinked block copolymers. Thermal decomposition kinetics of MIM–PCL and its copolymers were studied by using thermogravimetric analysis and differential scanning calorimetry (DSC). DSC traces of MIM–PCL showed two different exotherms, at 98 and 127°C. The first exotherm, observed at 98°C, was due to the polymerization of the terminal methacrylic groups; the other was due to the exothermic decomposition of azo groups of MIM–PCL. PCL-b-PS and PCL-b-PMMA crosslinked block copolymers showed single glass transition temperatures due to the compatibility of the crosslinked block segments. The polymer–solvent interaction parameter of PCL in chloroform was determined by vapor pressure osmometry to be 0.1 for the PCL–chloroform system at 30°C. The average molecular weights between junction points of crosslinked homo PCL were calculated by using the Flory–Rehner equation. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68: 1149–1157, 1998     

Temperature-Dependent Phase Behaviors in Cylinder-Forming Block Copolymers

We demonstrate that the temperature-dependent phase behaviors of parallel and perpendicular cylinder-forming block copolymers are governed by domain-domain segregation forces inherently present in block copolymer material itself. With increasing temperature, a parallel cylinder-forming block copolymer experienced a parallel cylinder straightening process before the order-disorder transition (ODT) and did not show long-range composition fluctuations near the ODT temperature due to the weak segregation forces between the block domains. A perpendicular cylinder-forming block copolymer with a strong segregation force between the block domains displayed cylinder orientation transition from perpendicular to parallel below the ODT temperature. On the other hand, a perpendicular cylinder-forming block copolymer material with an exceptionally strong segregation force between the block domains maintained its initial perpendicular cylinder orientation up to near the ODT temperature. In both cases of perpendicular cylinder-forming block copolymers, submicrometer-scale long-range composition fluctuations were observed well above the ODT temperature due to their intrinsically strong segregation forces between the block domains.     

苯乙烯和甲基丙烯酸甲酯梯度共聚物的应用

将用原子转移自由基聚合及连续补加甲基丙烯酸甲酯（MMA）的方法制备的苯乙烯（St）/MMA梯度聚合物P（Pt-t-MMA）作为增容剂应用于聚氯乙烯/苯乙烯-丁二烯-苯乙烯嵌段共聚物（PVC/SBS）和PS/PMMA聚合物合金的增容和改性。扫描电镜结果表明,P（St-t-MMA）可以改善PVC/SBS和PMMA/PS合金的相容性。PVC/SBS合金中加入少量P（St-t-MMA)后,冲击强度从6.0kJ/m^2提高到12.1kJ/m^2,加工流变性能得到了改善。SBS用量也影响PVC/SBS合金的冲击强度。     

傅立叶变换红外光谱法快速测定乙丙共聚物中的乙烯含量

研究了用傅立叶变换红外光谱法测定乙丙共聚物中乙烯含量的方法。建立了傅立叶红外光谱法快速测定乙丙共聚物中乙烯含量的标准工作曲线,对其准确性和精密度进行了评价。结果表明,测定样品的最大相对误差为2.82%,重复测定同一样片的相对标准偏差为0.48%,方法的准确性和精密度良好。该方法适用于乙烯质量分数为0%~33%的乙丙无规共聚物和嵌段共聚物的测定,并且已在生产中得到很好的应用。