共混聚醚型聚氨酯弹性体的研制

采用环氧丙烷聚醚与四氢呋喃聚醚共混，研制出共混聚醚型聚氨酯弹性体、研究了反应温度、不同结构聚醚对反应程度的影响和熟化时间对聚氨酯溶液粘度的影响以及不同共混比对聚氨酯物理一机械性能的影响．结果表明，环氧乙烷封端的环氧丙烷聚醚的反应活性与四氢呋喃聚醚相近。     

不同聚醚对聚氨酯成膜性能的影响研究

本文主要讨论了聚醚的品种和不同当量对水基聚氨酯成膜材料热力学性能和使用性能的影响。结果表明：在聚丙二醇、聚乙二醇、聚四氢呋喃二醇和聚己二酸丁二酯二醇等多种聚醚中，尤以聚四氢呋喃醚PTMG耐低温性、压花成型性和耐切割性最优。增加聚氨酯链段中硬段的浓度，可以提高涂层的离板性；将不同种类的聚醚共聚可显著提高成膜材料的综合性能。     

单组分聚氨酯密封胶的研制

论述了单组分聚氨酯密封的合成方法，讨论了聚醚分子量，填料含量，催化剂用量等对聚氨酯弹性体性能的影响，选择合适的多元醇和多异氰酸酯，以适当的比例合成的弹性体性能和国外产品相媲美，能满足工业化生产的需要。     

磺化聚醚砜共混质子交换膜的性能研究

将高离子交换容量(IEC)的磺化聚醚砜(IEC=1.83 meq/g)与低IEC的磺化聚醚砜(IEC=1.17 meq/g和IEC=0.92 meq/g)以不同比例共混成膜.用原子力显微镜(AFM)和差示扫描量热仪(DSC)分析表征了共混膜基质之间的相容性.对膜的吸水率、电导率、甲醇渗透率、力学性能和抗氧化性能进行了测试.结果表明,不同IEC的磺化聚醚砜具有良好的相容性,低IEC磺化聚醚砜的加入有效地改善了共混膜的溶胀性和甲醇渗透性能,并维持了较高的电导率,同时膜的力学性能和抗氧化性能也得到了提高.当IEC为1.83 meq/g和IEC为1.17 meq/g的磺化聚醚砜以质量分数55和46共混时,共混膜各方面的性能达到了较好的平衡.     

聚醚聚硅氧烷二元醇改性水性聚氨酯涂层剂的研制

采用聚氧化丙烯二醇和聚醚聚硅氧烷二元醇为混合软段,异佛尔酮二异氰酸酯为硬段合成了有机硅改性水性聚氨酯(Si-WPU)乳液,研究聚醚聚硅氧烷二元醇的用量对改性水性聚氨酯乳液及其胶膜性能的影响,并将其应用于棉织物的涂层整理,测试了改性水性聚氨酯涂层织物的静水压、透湿量、耐洗性、撕破强度以及硬挺度。研究结果表明:聚醚聚硅氧烷二元醇用量为2%～8%,改性聚氨酯乳液具有良好的乳液稳定性和较小的粒径,胶膜能保持聚氨酯原有的拉伸强度,且具有较好的耐水性和滑爽的手感;采用聚醚聚硅氧烷二元醇改性聚氨酯,可以明显提高涂层织物的耐水性和透湿性。     

聚醚砜增容共混体系的研究

以聚醚砜(PES)与聚碳酸酯(PC)多嵌段的嵌段共聚物为增容剂,研究了聚醚砜/聚碳酸酯(PES/PC)共混体系的力学性能、形态结构、热性能、界面层厚度及界面张力.实验结果显示,PES与PC多嵌段的嵌段共聚物显著降低共混物中PC分散相的尺寸,明显提高两相间的界面黏结性,有效改善两组分间的相容性.SEM电镜照片显示,共混体系中由于增溶剂的加入,形成了双连续相的互锁结构,提高了共混体系的力学性能.     

磺化聚醚砜／聚醚砜共混超滤膜的制备及性能表征

采用亲电取代反应成功合成磺化聚醚砜(SPES),利用聚醚砜(PES)与其共混制备 SPES/PES 平板超滤膜,并对其进行性能表征.实验表明:当 SPES 质量分数为40%时水通量达到最大值409.8 L/(cm·h),牛血清蛋白(BSA)截留率达到99.8%,BSA吸附量减少了近50%.与单纯的PES膜相比,由于强亲水性基团磺酸基团(-SO3H)的成功引入,使共混膜的水接触角减小,含水率提高,其亲水性得到了显著改善.     

聚醚氨酯/聚甲基丙烯酸甲酯IPN阻尼性能研究

以甲苯二异氰酸酯预体与聚醚反应,合成了一系列高温固化的聚醚氨酯,用于与体型聚甲基丙烯酸甲酯的互穿聚合物网络化研究,并对所获得的ＩＰＮ体系阻尼性能进行了测试。动态力学性能检测表明：聚氨酯软段中－ＯＨ与－ＮＣＯ的比例、软硬的相对含量以及交联密度。甲基丙烯酸     

淀粉反应接枝聚醚的分散液合成高回弹聚氨酯泡沫塑料

研究了用淀粉反应的接枝聚醚的分散液对合成ＰＵ高固弹聚氨酯泡沫的效果，考察了该合成体系各组成对泡沫性能的影响，找到了用该分散液合成ＰＵ高回弹泡沫的配方路线，其主要性能指标达到ＰＵ高回弹泡沫塑料的ＡＳＴＭ标准。     

聚醚的结构与性能

本文研究了从ＫＯＨ为催化剂，丁醇，丁酸，辛醇为起始剂的各种聚醚，当ＥＯ／ＰＯ、分子量，链段结构不同时，其性能（浊点，渗透，热分解性能、粘度等）的变化规律，具体应用聚醚时，可根据需要对其结构进行调整，以改善聚醚的性能。     

Cold resistant properties of high modulus polyurethane

Six kinds of polyurethane (PU) elastomers were prepared based on different polyesters, polyethers and chain extenders. The structure, mechanical properties and cold resistant properties of PU were systematically investigated by FTIR, XRD, DMTA, universal testing machine and flex ductility machine. The results show that T _g of soft segment is the main factor of the cold resistant properties of polyurethane elastomer. Compared with the same relative molecular mass of the polyester and the polyether, the polyether flexibility is better, the glass transition temperature (T _g) is lower and the cold resistant properties is remarkable, for example the cold resistant properties of PU based on poly (tetramethylene glycol), 1, 4-BG and MDI achieves the fifth level. The physics performances of polyurethane elastomers, such as breakdown strength, Young’s modulus and the cold resistant properties, are all superior.     

纳米SiO2对聚醚型聚氨酯弹性体的改性研究

研究了纳米二氧化硅粉体材料对硅油聚氨酯弹性体的改性条件，发现硅油改性聚氨酯弹性体和粉体材料再改性硅油聚氨酯弹性体的力学性能较纯聚氨酯弹性体有较大提高，拉伸强度与断裂伸长率分别提高9．16倍和0、54倍。     

脲基的引入对聚氨酯弹性体性能的影响

使用单乙醇胺作为部分扩链剂将脲基引入到聚氨酯分子链中,利用IR、DSC、电子拉伸机等研究了脲基的引入对聚氨酯弹性体的影响。研究结果表明:使用单乙醇胺作为部分扩链剂能够促进聚氨酯弹性体硬段部分的聚集,从而提高其力学性能。     

聚氨酯弹性体的性能研究

用3，3‘-二氯-4，4’-二氨基二苯基甲烷(MOCA)和4，4’-二苯甲烷型双马来酰亚胺(BMI)合成了一种新型的适用于浇注型聚氨酯弹性体的扩链剂．分别以MOCA、BMI-MOCA以及两者的混合物作扩链剂，采用预聚体法制备聚氨酯弹性体，研究了MOCA用量、BMI-MOCA用量以及后处理对聚氨酯弹性体力学性能的影响．结果表明：MOCA用量为12％(质量分数)时，制得的试样力学性能最佳；以BMI-MOCA为扩链剂时，容易制得高强度高硬度的聚氨酯的弹性体；适当后处理有助于提高聚氨酯弹性体的力学性能．     

HTPB/TDI/MCDEA型聚氨酯弹性体的研制

以端羟基聚丁二烯（HTPB）、甲苯二异氰酸酯（TDI）为主要原料合成预聚体,以4,4’-亚甲基双（3-氯-2,6-二乙基苯胺）为扩链剂,通过浇铸成型制备聚氨酯弹性体。实验采用电子万能试验机和邵氏A硬度计对聚氨酯弹性体的力学性能进行了测试,结果表明：当预聚体NCO含量为4.13%、NH2/NCO摩尔比为0.90时,聚氨酯弹性体的综合力学性能最佳;后硫化时间、环境湿度对聚氨酯弹性体的力学性能均有一定影响,使用新型扩链剂4,4’-亚甲基双（3-氯-2,6-二乙基苯胺）制得的聚氨酯弹性体的力学性能普遍好于扩链剂MOCA。     

Syntheses and Drug Delivery Property of Biodegradable Polyether-Anhydrides

Both pofyanhydrides and polyethers are new types of biodegradble polymers. They are of particular interest as materials for controlled drug release systems duo to their excellent surface erosion properties of poly-anhydrides and excellent biocompatibility of polyethers. They have been widly used in biomaterials. A series of polyether anhydrides elastomer were firstly synthesed through introducing PEG into the pofyanhydrides chains. Their degradation and drug release property were also studied.These materials may be used in applications where materials are needed with properties more close to those of natural skin.     

Syntheses and Drug Delivery Property of Biodegradable Polyether-Anhydrides

Both polyanhydrides and polyethers are new types of biodegradblepolymers. They are of particular interest as materials for controlled drug release systems duo to their excellent surface erosion properties of polyanhydrides and excellent biocompatibility of polyethers. They have been widly used in biomaterials.A series of polyether anhydrides elastomer were firstly synthesed through introducing PEG into the polyanhydrides chains. Their degradation and drug release property were also studied. These materials may be used in applications where materials are needed with properties more close to those of natural skin.     

耐热聚氨酯弹性体的研究

合成了一种新型的适用于耐热聚氨酯浇注型弹性体的扩链剂，研究了用聚酯，TDI、3，3′－二氯－4，4′－二苯基甲烷二胺（MOCA）／4，4'-二苯甲烷－双马来酰亚胺（BMI）扩莲剂制备聚氨酯弹性体（PUE）的方法，讨论了合成工艺，介绍了BMI－MOCA扩链剂硫化聚氨酯弹性体的性能，探讨了BMI－MOCA的适用性及其优缺点，采用BMI－MOCA为扩链剂容易合成高硬度，耐温性好的聚氨酯弹性体，新的扩链剂为聚氨酯的配方设计，提供了更为广泛的选择性。     

Damping properties of flexible epoxy resin

Amino-terminated polyethers and amino-terminated polyurethane were used as curing agent to cure the epoxy resin together and get a series of cured products. The damping properties of the composites were studied by DMA test at different measurement frequencies. Damping mechanical tests show that the flexible epoxy resin has higher loss factor than common epoxy. The highest loss factor reaches 1.57. Also the height and position of loss factor peak of the flexible epoxy resin varies by changing the content of amino-terminated polyethers. Results shows that the flexible epoxy resin can be used as damping polymer materials at room temperature or in common frequency range.