互穿聚合物网络研究进展

介绍了互穿聚合物网络的应用和表征方法。综述了互穿聚合物网络的研究进展，展望了应用前景。     

互穿聚合物网络阻尼材料研究进展

介绍了互穿聚合物网络阻尼材料的研究进展，讨论了对其阻尼性能的评价以及组分、组分间的相容性、交联密度、无机填料等影响性能的因素，并展望了互穿聚合物网络的研究前景。     

聚氨酯／乙炮基酯树脂互穿聚合物网络结构与性能的研究

通过同步法制备了一系列聚氨酯／乙烯基酯树脂互穿聚合物,研究了ＰＵ／ＶＥＲ－ＩＰＮ性能的影响因素。结果表明：随着ＰＵ含量的增加,ＩＰＮ的热稳定性能有一定程度的提高;而ＶＥＲ的含量增加,ＰＵ／ＶＥＲ－ＩＰＮ的剪切强度提高。实验还发现：当ＰＵ／ＶＥＲ－ＩＰＮ为部分相容的多相微区结构时,对增加ＩＰＮ的力学损耗更有利。     

聚氨酯/乙烯基酯树脂互穿聚合物网络结构与性能的研究

通过同步法制备了一系列聚氨酯／乙烯基酯树脂互穿聚合物（ＰＵ／ＶＥＲ－ＩＰＮ）,研究了ＰＵ／ＶＥＲＩＰＮ性能的影响因素。结果表明：随着ＰＵ含量的增加,ＩＰＮ的热稳定性能有一定程度的提高;而ＶＥＲ的含量增加,ＰＵ／ＶＥＲ－ＩＰＮ的剪切强度提高。实验还发现：当ＰＵ／ＶＥＲ－ＩＰＮ为部分相容的多相微区结构时,对增加ＩＰＮ的力学损耗更有利     

互穿聚合物网络阻尼材料

综述了近年来国内外有关阻尼材料的研究成果,提出互穿聚合物网络（ＩＰＮ）作为一种阻尼材料,具有其他类型高分子材料不能比拟的优势,同时展望了ＩＰＮ阻尼材料的研究前景。     

聚氨酯／环氧树脂互穿聚合物网络阻尼性能的研究

本文采用同步法合成一系列聚氨脂/环氧树脂(PU/EP)IPN 试样,研究改变多元醇类型,分子量大小,交联剂(3OH/2OH)及催化剂用量等对 IPN 阻尼性能、形态和涂膜的力学性能的影响规律。结果表明,聚氨酯所采用的多元醇链结构越柔曲、分子量越大,阻尼温度区间越宽广,涂膜的力学性能也越好。IPN 的互穿程度随交联剂(30H/2OH)的提高而增加,动态力学谱上两个为Tg 转变峰消失变为单一Tg 转变峰,相分离逐渐减少,电镜形态分布证实了上述结果。     

聚氨酯／聚苯乙烯互穿聚合物网络的结构与性能研究

通过改变组分比研究了PU/PS IPN结构与性能变化的规律。结果表明,在PU/PS为70/30时,电镜照片上呈现精细的细胞结构,相区尽寸缩小,网络间互穿程度最高,且溶胀度最低。热力学性能也同时出现最佳值,     

互穿聚合物网络阻尼材料研究进展

综述了互穿聚合物网络(IPN)阻尼材料的阻尼理论,阻尼性能的评价方法;对IPN阻尼材料的制备和应用进行了评述,并展望了高性能IPN阻尼材料发展趋势和应用前景。     

聚氨酯/乙烯基树脂互穿聚合物网络的研究进展

综述了聚氨酯/乙烯基树脂互穿聚合物网络（PU/VER IPNs）中两组分的聚合机理;重点讨论了分步IPNs、同步IPNs和胶乳IPNs的制备方法及其研究进展;介绍了PU/VER IPNs合成动力学的研究方法,包括化学滴定法、差示扫描量热法和傅立叶变换红外光谱法。     

互穿聚合物网络阻尼性能的评价

从聚合物相容性及形态结构，单体结构和单体配比等几方面对互穿聚合物网络（ＩＰＮ）阻尼性能的影响进行了讨论。在此基础上提出一种简便和定量的评价ＩＰＮ阻尼性能的方法：△ＬＰ＝１０ｌｏｇ（Ｑ／４πｒ＾２＋４／Ｒ１）／（Ｑ／４π／Ｒ２）；并指出ＩＰＮ阻尼材料的有效ｔａｎδ下限为０．３。     

具有良好阻尼性能的蓖麻油互穿网络弹性体

由蓖麻油、甲苯二异氰酸酯(TDI)、单端羟基(甲基)丙烯酸酯预聚物及/或(甲基)丙烯酸酯单体出发,在二丁基二月桂酸锡及氧化还原引发剂存在下合成了四种接枝型互穿网络聚合物(IPN)。研究了产物的力学性能及动态力学性质。结果表明,某些接枝IPN,例如蓖麻油/TDI/单端羟基甲基丙烯酸丁酯预聚物/单端羟基丙烯酸丁酯预聚物组成的IPN,蓖麻油/TDI/丙烯酸丁酯单体/单端羟基甲基丙烯酸乙酯预聚物组成的IPN及蓖麻油/TDI/甲基丙烯酸乙酯单体/单端羟基甲基丙烯酯丁酯预聚物组成的IPN均呈现突出的阻尼行为,tanδ>0.3的温度范围很广,而且最大的tanδ大于1.1。这些IPN呈现良好的橡胶样力学性能。     

New interpenetrating polymer networks based on uralkyd–poly(butyl methacrylate)

A study on two‐component semi‐ and full‐interpenetrating polymer networks (IPNs) of soyabean‐oil based uralkyd resin (UA) and poly(butyl methacrylate) (PBMA) synthesized by a sequential technique, has been conducted. The IPNs obtained are characterized with respect to their mechanical properties, such as tensile strength, percentage elongation and hardness (Shore A). Phase morphology has been studied by scanning electron microscopy. Glass transition studies have been carried out using differential scanning calorimetry. The thermal characterization of the IPNs was undertaken with the aid of thermogravimetric analysis. The apparent densities of these samples have been determined and are compared. The effect of the compositional variation on the above‐mentioned properties was examined. The tensile strength exhibits a sudden rise (approximately three‐fold) for the semi‐ and full‐IPNs with composition UA: PBMA 40% : 60% compared with the UA:PBMA composition of 20% : 40%. © 2001 Society of Chemical Industry     

Uralkyd and poly (butyl methacrylate) interpenetrating polymer networks

ABSTRACT:: Hydroxyl terminated alkyds synthesized from castor oil, glycerol, and different dibasic acids were used to develop uralkyds and their interpenetrating polymer networks (IPNs) with polybutyl methacrylate (PBMA). Glass transition temperature measurements gave the evidence of interpenetration. The IPNs were characterized for their physicomechanical properties and their phase morphology was studied by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). As the concentration of the uralkyd in IPNs increases, a gradual increase in elongation, density, and swelling with a consequent decrease in the hardness were observed for all IPNs. Swelling is relatively more prominent in methyl ethyl ketone (MEK) and toluene than in water. From SEM it was observed that IPNs of PBMA‐uralkyd containing phthalic anhydride (UA‐P) as an acid part showed greater compatibility than those containing dimethyl terephthalate (UA‐D). From thermogravimetric analysis (TGA) no significant change was observed in the degradation behavior of the IPNs. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 825–832, 2000     

聚氨酯/聚甲基丙烯酸甲酯互穿网络的阻尼性能及相态

引言聚合物互穿网络体系由于在其形成过程中产生特殊的物理拓扑结构,使得该体系是一种永久缠结在一起的聚合物"合金"[1]。同时,由于构成该体系的聚合物组分往往不相容或部分相容,在其形成     

Structure and damping properties of polydimethylsiloxane and polymethacrylate sequential interpenetrating polymer networks

By using the technology of the sequential interpenetrating polymer network, a series of novel damping materials based on a polydimethylsiloxane (PDMS)/polyacrylate (PAC) matrix with polymethacrylate (PMAC) were synthesized. They have a controllable broad transition peak spanning the temperature range of 150–220°C and the medial value of loss factor with maximum of 0.35–0.60. Dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and atomic force microscopy (AFM) were applied to analyze and characterize the transition behavior and the microphase structure of the materials. It was found that the size and height of a transition peak at both the low‐ and the high‐temperature zones change as a function not only of the concentration of PMAC and PDMS but also of the kind of PMAC; simultaneously, the low‐ temperature behavior was also governed by the crystallization of PDMS. The content of the crosslinking agent exerts a significant influence on the configuration of the curves of the transition peaks. AFM shows a characteristic phase morphology of double‐phase continuity containing a transition layer and domain less than 1 μm, indicating that the interwoven multilayer networks are the key to incorporation of the immiscible components and form a broad damping functional region. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 545–551, 2002     

Correlation between mechanical damping and interphase content in interpenetrating polymer networks

Recently, some interpenetrating polymer networks with good mechanical damping properties have been synthesized. However, the effect of morphology on this property has not yet been clearly elucidated. Herein, two polystyrene–polyurethane interpenetrating polymer networks, which were grafted using TMI [benzene‐1‐(1‐isocyanato‐1‐methyl ethyl)‐3‐(1‐methylenyl)] and HEMA (2‐hydroxyethyl methacrylate), respectively, have been investigated, as model samples, by modulated‐temperature differential scanning calorimetry and by dynamical mechanical thermal analysis. The results indicate that there is a correlation between mechanical damping and both interphase content and the distribution of composition in the interphase region. The findings should provide valuable information for the design of future damping materials. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2439–2442, 2001     

聚氨酯/环氧树脂互穿网络聚合物反应动力学

通过共混法制备了聚氨酯(PU)/环氧树脂(EP)互穿网络聚合物(IPN),采用示差扫描量热法(DSC)和动态机械分析(DMA)对IPN形成过程中的固化反应动力学及产物IPN的相容性进行了研究,结果表明,m(PU)/m(EP)=10∶6的IPN体系的反应级数为0.95,表观活化能为169.23 kJ/mol;PU/EP IPN只有1个玻璃化转变温度,相容性好。     

Synthesis and mechanical properties of leather–epoxy interpenetrating polymer networks

Leather–epoxy interpenetrating polymer networks (IPNs) were synthesized; these IPNs have an approximate epoxy concentration of 25 wt %. The flexural and tensile moduli of the IPNs prepared are equivalent to those of the epoxy resin. The Izod impact energy and fracture toughness measured for the IPNs, however, exceed those attained by the epoxy resin alone by at least a factor of 4. The glass transition of leather–epoxy IPNs occurs over a wide temperature range, thus indicating that the IPN is an intimate admixture of the epoxy resin throughout the collagen matrix of the hide. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1224–1232, 2000