颜料红170的合成

讨论了颜料红170的主要合成条件,分别对α型、β型和γ型颜料的生成条件进行了试验。通过试验,找到了合成上述三种晶型颜料的最佳条件。     

高效合成香料：愉快型、不愉快型、难以忍受型

在第一部分里提到了“More Fizz for your Buck”，即在食品中高效合成香料作为特征性效果的重要角色。为深化主题，我提出了有20节香轮的关系图，如图1。     

国内外固体二氧化氯的发展

固体二氧化氯无论是从包装，运输还是使用方面都比二氧化氯液更为方便，而它的杀菌效果却不变，因此，开发固体二氧化氯产品具有很大潜力。本文详细列举了固体二氧化氯的各种制备方法，并综述了其发展状况。     

复合材料光纤应变传感器发展概况

本文简要介绍了国内外复合材料嵌入式光纤应变传感器的发展情况，重点介绍了二涉型、模式型、偏振型和光强型四种尖型光纤应变传感器的研制状况。     

光催化剂在水污染处理的研究进展

近些年随着工业技术的发展,水污染问题日益严重.光催化技术能够有效处理废水中有机污染物,本文参考国内外文献总结了近几年来光催化剂的去研究近况,重点介绍了半导体型、复合氧化物型和钙铁矿型光催化剂在污水处理方研究进展.     

阻燃剂的国内外发展概况

叙述了国内外阻燃剂的发展概况,着重介绍了国外各类阻燃剂研究开发的新进展,并提出了未来阻燃剂的发展动向。     

新型聚硅氧烷嵌段共聚物的合成研究进展

聚硅氧烷作为一种有机硅高聚物,可通过嵌段共聚进行相应的化学改性。综述了国内外新型聚硅氧烷嵌段共聚物的研究进展,主要对纯聚硅氧烷嵌段型、聚醚型、聚烯烃型和聚氨酯型进行了叙述,并对其应用前景进行了展望。     

聚氨酯弹性体的研究进展

聚氨酯弹性体（PUR）作为一种具有高强度、抗撕裂、耐磨等特性的高分子材料，在日常生活、工农业生产、医学等领域广泛应用。本文综述了浇注型、热塑型和混炼型聚氨酯弹性体的研究进展及其应用情况。     

新型聚硅氧烷嵌段共聚物制备的研究进展

综述了近年来国内外嵌段聚硅氧烷的研究进展,对几种主要类型的嵌段聚硅氧烷,即纯聚硅氧主链嵌段型、聚氨酯型、聚烯烃型以及聚醚型作了较全面的总结,并对其应用前景进行了展望。     

两性表面活性剂（八）——两性表面活性剂的合成

较为详细地介绍了烷基甜菜碱、烷基酰胺基甜菜碱、磺基甜菜碱及其他若干种甜菜碱型表面活性剂的合成,并比较了其中一些合成路线,特别是磺基甜菜碱的几种合成方法。对咪唑啉中间体、两性咪唑啉合成中的主要副产物及两性咪唑啉的开环结构进行了报道。对氨基酸型两性表面活性剂的原料胺、长链烷基氨基酸及烷基低聚氨基酸的合成方法也进行了讨论。     

Synthesis and properties of nylon 6/66/510 used as hot melt adhesives for metal plate with low-surface-energy coating

In this work, nylon 6/66 and nylon 6/66/510 containing 5?～?20?mol % nylon-510 were synthesized to be used as hot melt adhesive for metal plate with low-surface-energy coating. The effects of mole fraction of nylon-510 (X_m) on the thermal and mechanical properties of nylon 6/66/510 were systematically studied. The results demonstrated that: (1) the melting point of the copolyamide decreases and the glass transition temperature decreases when the X_m value increases; (2) the tensile strength of nylon 6/66/510 remains almost unchanged and is almost equal to that of nylon 6/66; (3) the elongation at break of nylon 6/66/510 is significantly higher than that of nylon 6/66. The crystal structure of the copolyamide was also investigated by wide-angle X-ray diffraction (WAXD). The hot-melt adhesives (HMAs) were prepared from nylon 6/66/510, and the adhesive experiments of HMAs to aluminum sheet with low-surface-energy coating were carried out. The results showed that the peeling strength of HMAs based on nylon 6/66/510 reaches a maximum value when X_m = 15?mol %.     

Adhesive and viscoelastic performance of surface functionalized nano‐Fe3O4 induced orientated ethylene vinyl‐acetate composite hot melt adhesives

Different surface functionalized Fe₃O₄ were added to ethylene vinyl‐acetate copolymers (EVA) composite hot melt adhesives (HMAs) to study their influence on the properties of composite HMAs. The adhesion and viscoelastic properties for HMAs were studied using an electromechanical universal testing machine, dynamic mechanical analyzer (DMA) and parallel‐plate rheometer, respectively. Orientation structure of HMAs was studied by Infrared dichroism. The results showed that tetraethoxysilane (TEOS) treated Fe₃O₄ showed better compatibility with EVA composite HMAs, and that TEOS‐treated Fe₃O₄/EVA composite HMAs presented better adhesion property and processing fluidity, compared with bare Fe₃O₄/EVA composite HMAs and silane coupling agent KH560 treated Fe₃O₄/EVA composite HMAs. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43931.     

Synthesis and characterization of a novel polyesteramide from modified jatropha seed oil,dimer acid and ethylenediamine as hot melt adhesive

This work deals with the synthesis and characterization of a novel polyesteramide (PEA) hot melt adhesive (HMA) using dimer acid, ethylenediamine, and modified jatropha seed oil. Jatropha seed oil was initially reacted with diethanolamine to prepare N,N-bis(2-hydroxyethyl) jatropha oil fatty amide (HEJA), having hydroxyl end groups. HEJA was reacted with dimer acid as a partial replacement of ethylenediamine. Ethylenediamine was replaced up to 30% by HEJA, on molar basis. Prepared PEA HMAs were characterized for mechanical, thermal, rheological, and adhesion properties. Increased replacement of ethylenediamine by HEJA led to decreased tensile strength, melting temperature, enthalpy of melting, crystallization temperature, enthalpy of crystallization, glass transition temperature, lap shear strength, T-peel strength, and viscosity. This was due to the reduction in hydrogen bond formation capacity, and thus the intermolecular forces of attraction of the ester and secondary amide linkages as compared to primary amide linkages, and the increased distance between ester linkages as compared to the primary amide linkages, was caused due to the bulky nature of HEJA. However, HMAs prepared using HEJA will have better low temperature flexibility due to low T_g; and better adhesion process due to the lower viscosity and melting temperature.     

Thermal characterization of three‐component blends for hot‐melt adhesives

Traditional solvent‐based adhesives used in the footwear industry have been demonstrated as harmful to the workers' health and environment. Solvent‐free three‐component adhesives (hot‐melt adhesives or HMAs) for various applications including the leather and footwear industry are becoming more and more attractive. Thus, the formulation of a three‐component HMA was realized in this study. Thermogravimetry, differential scanning calorimetry, and the apparent strength of the adhesive bond were used to investigate the relationship between their properties and the polymer/wax/resin compositions. The thermal stability of HMA formulations was determined and compared with thermal traces based on an additive weight computation of the single components' thermal profiles. All HMA formulations showed a direct relationship between the glass‐transition temperature and the apparent adhesive shear strength at the leather–rubber interface. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2889–2901, 2001     

Viscoelastic and adhesion properties of hot-melts made with blends of ethylene-co-n-butyl acrylate (EBA) and ethylene-co-vinyl acetate (EVA) copolymers

Several hot-melts (HMAs) were prepared by using blends of ethylene-co-n-butyl acrylate (EBA) and ethylene-co-vinyl acetate (EVA) copolymers - EBA/EVA. HMAs were prepared with mixtures of EVA copolymers with 18 (EVA18) and 27 (EVA27) wt% vinyl acetate contents and EBA copolymer with 27 wt% n-butyl acrylate, polyterpene resin and mixture of microcrystalline and Fischer-Tropsch waxes. HMAs made with EBA/EVA blends showed lower viscosities and reduced shear thinning than the ones made with EBA or EVA due to differences in compatibility, but both the set time and the open time were not affected as they depended mainly on the wax nature and amount. The increase of the vinyl acetate (VA) content in EVA copolymer reduced the crystallinity of the EBA/EVA blends. Even EBA copolymer was more compatible with EVA27 than with EVA18 (the α- and β-transitions shown in DMTA plots were closer) and the compatibility did not vary with the EBA content in the blends. The addition of polyterpene resin and the mixture of waxes decreased the compatibility of the EBA/EVA blends, the higher compatibility was observed for the HMAs made with only one copolymer. The tack of the HMAs depended on their EBA/EVA contents, EBA/EVA27 HMAs showed broader temperature interval with higher tack, while the tack of EBA/EVA18 HMAs blend decreased and the temperature interval with tack was shortened and shifted to lower temperatures. Adhesion to polypropylene film was improved in HMAs made with 75 wt% EBA/25 wt% EVA18 and 50–75 wt% EBA/50-25 wt% EVA27. The adhesion to aluminum film of EBA or EVA hot melts was improved only in the joints made with EBA/EVA 27 HMAs, more noticeably when they contained higher EBA content.     

Lignin and lignin derivatives as components in biobased hot melt adhesives

Hot melt adhesives (HMAs) are formulated for the first time with different lignins as major components, and the developed HMA formulations were tested for gluing paperboard. The best formulations showed equal or even better bond strength compared to a commercial HMA reference. A maximum bond strength of 16.1 N was achieved with a formulation of oxidized cellulose acetate, organosolv lignin, and triethyl citrate, whereas the bond strength of the commercial HMA reference was 10.5 N. The performance was adjusted via the selection of lignin, the formulation, and chemical modification. Lignin modification was not necessary but provided further possibilities for adjusting the properties for different products (reversible vs irreversible adhesive seams) and also for producing plasticizer-free formulations. Modification with tall oil fatty acids enabled the formulation of fully biobased HMAs without any external plasticizer and provided a bond strength as high as high as 8.9 N. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47983.     

Miscibility and adhesive properties of ethylene vinyl acetate copolymer (EVA)‐based hot‐melt adhesives. I. Adhesive tensile strength

A series of ethylene vinyl acetate copolymers (EVA) were blended with some tackifier resins that are made from wood extracts, and possible relations between their miscibility and properties as hot‐melt adhesives (HMA) were investigated. From our previous report on miscibility of various EVA‐based HMAs, we chose some blends that represent some of typical miscibility types and measured their adhesive tensile strengths. When the blends were miscible at testing temperatures, the temperature at which the maximum value of adhesive tensile strength was recorded tended to move toward higher temperature as tackifier content of blends increased. This result corresponds to the glass transition temperature (T_g) of the blends that became higher as tackifier content of blends increased when blend components were miscible. In terms of HMA performances, we suggest that factors other than miscibility affect absolute values of adhesive tensile strength more directly than miscibility; this idea has to be investigated further in a future study. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 719–725, 2002     

Adhesion and rheological properties of EVA-based hot-melt adhesives

Ethylene vinyl acetate (EVA) copolymers of various melt indexes were blended with aromatic hydrocarbon resin in the molten state, and the thermal and adhesion properties as hot-melt adhesives (HMAs) were investigated. The thermal properties for the EVA blends with aromatic hydrocarbon resin were studied using differential scanning calorimeter, Brookfield viscometer and dynamic mechanical thermal analyzer. Their adhesion strength was also obtained using single lap shear strength. The examination of thermal properties for the blend of EVA copolymers with aromatic hydrocarbon resin over a large temperature range showed that the glass transition temperature was independent of their melt index (MI), but that their heat of fusion decreased with increasing MI of EVA copolymers. Furthermore, the storage and loss moduli of the blends decreased with increasing temperature and MI of EVA copolymers, but the loss tangent (tan δ) of the blends increased. An increase in the MI of EVA copolymers decreased the adhesion strength of the blend at the same test condition.     

高强度快干变性淀粉粘合剂的研究及在纸制品包装中的应用

本文介绍了高强度快干变性淀粉的制备原理和工艺,以及用该变性淀粉调配瓦楞纸板用粘合剂的方法和应用情况。讨论了变性淀粉粘合剂的初粘力,干燥速度等并与普通淀粉粘合剂作了比较。     

The study of improving the compatibility of the blend of TVVM resin and polyester as a non-reactive hot melt adhesive used in OMD technique

Out-side mold decoration (OMD) is a new decoration technique for improving the surface quality and achieving colorful cosmetic surface of objects. In this paper, a non-reactive hot melt adhesive used in OMD technique was prepared from polyester (PES) and a terpolymer of vinyl choride-vinyl acetat-maleic anhydride (TVVM). For improving the compatibility of the two polymers, a bifunctional monomer (EHPA) with two different functional groups, –NH₂ and –OH was synthesized in laboratory. Then a series of hot melt adhesives (PES-g-TVVM/EHPA) with different weight percentage of PES, TVVM/EHPA and Diphenyl-methane-diisocyanate (MDI) were obtained. The thermodynamic properties, softening point, cloud point, peeling strength and morphological characterization of the samples were tested for investigating the compatibility of components in HMAs. Finally, the OMD transfer films fabricated by using PES-g-TVVM/EHPA as bonding material were prepared for decorating plastic product, and the adhesion, acid and alkali resistance, impact resistance and heat resistance of the product surface were tested.