表面改性剂和硅油对HDPE/Al(OH)3力学性能的影响

探讨了各种表面改性剂和硅油对高填充HDPE/Al（OH)3复合材料力学性能的影响。研究表明,使用经特殊表面改性剂处理的Al（OH)3作填料并加入硅油时,可以大幅度提高HDPE/Al（OH)3复合材料的缺口冲击强度和断裂伸长率。利用扫描电镜和差示扫描量热仪研究了Al（OH)3的表面改性对硅油分布的影响,观察到硅油的两种分布类型;包覆Al(OH）3粒子和以液滴形式与Al(OH）3粒子单独分散于HDPE中,并将硅油的分布状况与材料的力学性能作了对比分析。     

蒙脱土有机插层改性及其插层性能

以十六烷基溴化铵（CTAB）和十八烷基胺（ODA）为有机改性剂制备了有机蒙脱土,研究了反应时间、反应温度、改性剂的用量对蒙托土插层性能的影响,通过傅里叶变换红外光谱图仪（FTIR）、X-射线衍射仪（XRD）和综合热分析（TG-DTA）对其结构和形貌进行表征。结果表明,以十六烷基三甲基溴化铵为改性剂,反应温度为80℃,反...     

新型有机改性剂对重质碳酸钙的表面改性效果及机理

采用新型改性剂和传统改性剂对两种重质碳酸钙进行干法表面有机改性,探究了改性剂种类和改性剂用量对样品吸油值、活化指数、油相分散稳定性和水接触角的影响,确定了改性剂的优化用量,采用傅里叶变换红外光谱仪（FT-IR）、热重分析（TG）探究重质碳酸钙改性机理。结果表明：改性剂JST-9001（聚氧乙烯醚型复合改性剂）、JST-9003（聚氧乙烯醚型复合改性剂）、硬脂酸和铝酸酯F-2的改性效果更好,尤其两种新型改性剂JST-9001和JST-9003在低改性剂用量下（质量分数为0.5%）可获得更加优异的表面改性效果;优化用量下JST-9001和JST-9003改性剂分子中的亲水基与重质碳酸钙表面的—OH发生键合作用,改性剂分子层包覆于重质碳酸钙颗粒表面。     

碳酸钙晶须表面改性研究

采用不同改性剂对碳酸钙晶须表面进行改性研究,研究了改性剂种类、改性剂加入时间、改性剂用量等因素对碳酸钙晶须改性效果的影响。结果表明,采用单一改性剂时以硬脂酸钠的改性效果最佳;采用复合改性剂（硬脂酸钠和十二烷基硫酸钠）时,其改性效果优于采用单一改性剂硬脂酸钠;改性剂在碳化反应前加入效果较好;改性剂最佳用量为4%（质量分数）。最优改性产品的活化指数为98%,沉降体积为4.41 mL/g。对比碳酸钙晶须改性前后的红外光谱图,发现改性后出现了明显的亚甲基,说明改性剂已经牢固地键合在碳酸钙上。     

新型填充剂和填充-改性剂

综述了对包括炭黑在内的一些橡胶填充剂和填充-改性剂的研究及使用方面的最新资料,并列举了大量数据,以证明填充．改性剂（如纳米配合剂）对提高橡胶各种物理力学性能所起的作用。     

N-苯基马来酰亚胺改性MCS接枝共聚物的合成与热性能研究

用N-苯基马来酰亚胺（N-PMI）作耐热改性剂，通过悬浮聚合法合成了接枝型MCS树脂，并对其热性能进行了研究。结果表明，N-PMI成功接枝在基体树脂上，接枝改性后的MCS树脂的热性能得到了明显的改善，玻璃化温度和热分解温度明显提高。     

阿科玛开发出新的PVC抗冲改性剂，展现碳纳米管最新进展

美国阿科玛（Arkema）公司的PVC助剂的研究小组为聚氯乙烯（PVC）引进了一个新的丙烯酸抗冲改性剂Durastrength 619。公司声称这种最新的抗冲改性剂的效率超过了现有的丙烯酸改性剂和氯化聚乙烯,可以降低整个加工流程的成本。     

DuPont Dow的低成本高效PVC抗冲改性剂

据“Additives for Polymers，2005，（Jan）：3”报道，美国DuPont Dow Elastomer（弹性体）公司新推出Enlite系列聚氯乙烯（PVC）抗冲改性剂，是该公司拥有专利权的高性作比、低密度的聚烯烃弹性体，是现有PVC抗冲改性剂中密度最小的品种，应用目标为PVC窗框、建筑侧板和其他挤出制品。据称，Enlite与其他抗冲改性剂比，用量可减少20％，并可以提高PVC配混料配方中填料用量，因而可大幅降低配方成本，     

国内聚氯乙类抗冲击改性剂现状及发展趋势

介绍了几种重要的聚氯乙烯（ＰＶＣ）抗冲击改性剂，并对国内ＰＶＣ抗冲击改性剂的发展前景进行了分析。     

脂肪酸表面改性镁铝复合阻燃剂

采用均匀沉淀法制备了镁铝复合阻燃剂。以脂肪酸为改性剂,对镁铝复合物进行表面改性处理。通过X射线衍射（XRD）、红外光谱（FT-IR）、透射电镜（TEM）、扫描电镜（SEM）及亲水亲油性分析,对改性前后镁铝复合物进行表征,对改性工艺进行优化。研究结果表明：以硬脂酸为改性剂,当改性剂用量为镁铝复合物质量的1%时,样品的分散性及与有机体系的相容性最好。     

大分子表面改性剂在聚合物表面的富集行为

简述了大分子表面改性剂添加到聚烯烃基体中时接触介质的诱导作用和聚烯烃基体结晶的异质排斥作用及其相对分子质量、链节的柔顺性和与基体的相容性对其表面富集的影响。提出大分子表面改性剂设计合成的基本原则:化学结构和使用环境相匹配、憎水基功能团和亲水基功能团相适应、使用效率和功能持久性相平衡。介绍了大分子表面改性剂合成的主要方法。     

Surface modification of polypropylene by the entrapping method using the short‐chained stearyl‐alcohol poly(ethylene oxide) ether modifier

On the basis of the short‐chained modifier of stearyl‐alcohol poly(ethylene oxide) ether (AEO), an entrapping modification was carried out on the polypropylene (PP) surface for hydrophilic improvement. A swelling layer was confirmed locating in the amorphous region on the PP surface, from which the modifiers could penetrate into the surface. The AEO‐8 modifier achieved the optimal hydrophilic modification on the surface with a contact angle of 20.6° and modifier coverage of 19.2%. A microphase separation was speculated to occur between the poly(ethylene oxide) (PEO) chain of AEO and the PP substrate in the entrapping surface, after which surface‐enriched PEO chains could improve surface hydrophilicity, simultaneously, reserved stearyl chains in the surface could approach modifier fixation. Water immersion durability of the modified surface could be improved by establishing a covalent linkage in the surface‐fixed structure. This work gives more comprehensive insights in the entrapping modification on the semi‐crystalline PP surface based on the short‐chained and block modifier. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43607.     

乙烯基硅烷偶联剂改性白炭黑

以乙烯基硅烷偶联剂为改性剂,选择合适的温度水解后,对沉淀白炭黑表面进行改性。探讨了改性剂用量、温度、时间等因素对改性效果的影响。通过正交实验,得出最优化条件为:用乙烯基三乙氧基作改性剂时,每10.00 g白炭黑改性剂用量为4.00 g,时间30 min,温度70℃,在此条件下改性产物活化度可达到95%以上。通过红外光谱分析可知,乙烯基硅烷偶联剂水解后与白炭黑表面发生了化学键合。     

环氧耐磨防腐涂料的研制及在三峡工程中的应用

介绍了改性树脂、表面助剂在改性环氧耐磨防腐涂料中的应用,并研究了改性树脂和表面助剂对涂层耐水性和耐磨性能的影响。     

The effect of a morphology modifier on the precipitation behaviour of nickel powder

The effect of a morphology modifier on the precipitation process of nickel powder was investigated in order to develop an understanding of its mechanism of action. Experiments were conducted on a pilot-plant scale using a 75-L autoclave with modifier dosages in the range of 0.25-5 vol%. Samples were collected from each successive batch reduction within a cycle and the powder was separated from the liquor before being washed and dried for subsequent analysis.The active particle rate processes were identified by transforming the particle size distribution (PSD) data into moments and from the change in surface area as measured by the BET method. Scanning Electron Microscopy (SEM) micrographs of the powder were used to observe the powder morphology and to validate the proposed particle rate processes and mechanism of action of the modifier.Evolution of the first moment (m0) and third moment (m3), equivalent to the total number of particles and volume, respectively, indicated that growth and aggregation were the major particle rate processes at a modifier dosage of 0.25 vol%. Breakage became apparent at dosage levels above 0.25 vol%. A decrease in BET surface area was noted in each cycle, indicating the presence of aggregation. The magnitude of decrease in the surface area indicated that the extent of aggregation decreased with increasing modifier dosage.SEM micrographs revealed that the powder was compact and aggregated at modifier dosages between 0.25 and 3 vol% and that loose porous powder was produced at 5 vol%. The modifier was found to inhibit growth, resulting in the formation of weaker agglomerate bridges leading to shear-induced breakage. This led to an increase in the surface area available for reduction. However, the effect of increased surface area in promoting reduction was outweighed by growth inhibition above a modifier dosage of 1 vol%. Thus, the number of attainable batch reductions increased when the modifier dosage was increased from 0.25 to 1 vol% and decreased with further increases in modifier dosage.     

Studies on functionalized mesoporous materials—Part I: characterization of silylized mesoporous material of type MCM-41

The synthesis of organic–inorganic composite materials was performed by the surface modification of mesoporous material type MCM-41 by chlorodimethylphenylsilane and dichloromethylphenylsilane. Applying IR spectroscopy, low temperature nitrogen adsorption/desorption (isotherms BET), thermogravimetric measurements and technique of competitive adsorption of toluene and water it was shown that the degree of silylation, hydrophobicity, surface and volume properties (pore size distribution, pore volume) strongly depends on the nature of silylation agent and the ratio of calculated amount of silanol groups to the modifier. Two types of condensation reaction take place: (1) the reaction of the modifier with surface silanol groups, and (2) an inter-molecular condensation of the modifier, resulting in additional pore blocking. Only 24–36 % of the surface silanol groups react with modifier agent. The materials are stable up to temperatures of about 170 °C that is higher than the corresponding polymeric resins. The TG/DTA data allowed concluding that the degree of grafting depends on the ratio silylation agent to SiOH groups. As shown by Fourier transform diffuse reflectance mode spectroscopy only free silanol groups react with modifier.     

芳纶平纹布表面预处理及其与天然橡胶的界面粘合性能

研究了自制芳纶表面改性剂A和胶粘剂类型对芳纶布/天然橡胶复合材料界面粘合性能的影响,并利用SEM分析了芳纶纤维改性前后的表面形貌和复合材料剥离界面形貌。结果表明,使用改性剂A处理的芳纶布、开姆洛克胶粘剂和天然橡胶制成的复合材料粘合强度达到了13.9kN/m,与未处理芳纶布相比提高了162%,较间苯二酚/甲醛/胶乳胶粘剂(RFL)的提高了61%;复合材料剥离界面微观形貌为橡胶撕裂和芳纶纤维劈裂共存;改性剂A对芳纶表面浸润良好,二者有一定程度的化学反应。     

超细氧化铁红颜料粉体的表面改性机理研究

经过表面改性后超细氧化铁红颜料粉体的分散稳定性能及其它性能得到了大大的改善。接近国外同类产品。通过对样品进行红外光谱(IR)、差热热质量(DTA／TG)、表面ξ电位的测试研究。结果表明改性剂(聚丙烯酸盐)不仅与铁红粒子表面的羟基产生作用,而且还能与铁红粒子晶格中的Fe-O键作用。     

纳米二氧化钛表面改性研究

纳米二氧化钛有机表面改性的研究，研究了纳米二氧化钛与不同量的有机表面改性剂月桂酸钠混合研磨、研磨不同的时间同研磨包覆后纳米二氧化钛在蓖麻油中溶解时间的规律，表明研磨时间长，溶解时间则变短，当混合研磨时间一定时，表面处理剂含量大则溶解时间会缩短。