酚醛泡沫以甲阶酚醛树脂为主要原料,由于其优异的保温和阻燃性能在保温领域具有广阔的应用前景.但是,酚醛泡沫在成型过程中通过酸性(催化)固化剂固化成型,金属材料与泡沫体接触时容易受到腐蚀.为了降低金属被腐蚀的可能性,在不影响酚醛泡沫其他优良性能的前提下,通过选择合适的碱性填料、用酯固化作用取代酸固化剂、合成吸酸剂等方法降低酚醛泡沫的酸性.

利用环境舱法测定不同涂刷工艺的木家具面板在舱内一段时间的挥发性有机化合物释放量,结果表明,相同涂刷工艺的同种木家具样品所测得的挥发性有机化合物释放量相近,不同涂刷工艺的同种木家具面板样品中挥发性有机化合物释放量有一定差别,而同种涂刷工艺的不同木家具面板样品中挥发性有机化合物的释放量也不同.采用UV底漆涂刷的面板样品的挥发性有机化合物释放量相对最低,测试结果满足木家具中挥发性有机化合物的释放限量要求.

建立了沙发面料中痕量VOCs分析方法.本方法将沙发面料样品置于特定条件下的采样袋中,以Tenax管富集,用热脱附-气相色谱质谱(TD-GC-MS)进行分析.对样品前处理条件和分析条件进行了优化,线性范围为(5～100)ng,相关系数R2为0.9981～0.9998,检测限为(0.002～0.010)mg·m-3,平均加标回收率为86.4％～100.5％,RSD(n=7)为1.2％～5.9％.该方法模拟样品实际使用条件,符合沙发革日常使用下的VOCs释放现状,适用于沙发革中痕量挥发性有机化合物的测试分析,可作为现有皮革和人造革VOCs测试方法的补充.

With reference to the international standard ISO16000-9 and the national standard GB/T 31106-14, this paper has chosen leather seats as the research object in order to study the emission of volatile organic compounds (VOCs) and total volatile organic compound (TVOC). The test results show that about 21 species of VOCs released from the leather seats were measured, including several types of aldehydes, ketones, aromatic hydrocarbon ,hydrocarbon, lipids and so on.This paper analysis the possible sources of volatile organic compounds in leather seats as well.

The service pattern for test & certification of the intertek group in china can be classified to four kinds.First,perfect allocated services system for both core service and extended services.Second,the service targets varies from manufacturing enterprise to raw materials suppliers and buyers. Third, the intertek group offers the integrated solutions.Forth,the O2O service has generated considerable benefits.The four service pattern play the important role in the intertek group development.It set up an example for the third-party test &certification organizations in china.

A modified phenolic resin containing tertiary amine oxide was prepared via a two-step method. Epoxy phenolic resin, F-48, was reacted with dimethylamine to give the phenolic resin containing the tertiary amine group, which was then oxidized with hydrogen peroxide to obtain the target product. The tertiary amine oxide-containing resin could easily dissolve in water. However, it became water insoluble after heat treatment at a high temperature such as 160 °C. Thermal properties of the tertiary amine oxide resin were studied with DSC and TGA. A thermo-sensitive film comprising the prepared resin and an IR-dye was prepared and laser-induced thermal imaging was also conducted. This material might be used to develop new chemistry-free printing plates.

Microcapsules with triallylamine-containing core surrounded by polyelectrolyte shell of controlled thickness were prepared via layer-by-layer assembly technology. First, isocyanate end-capped polyurethane was synthesized through the reaction of isophorone diisocyanate and poly(1,4-butylene adipate). Then, polyurea microcapsules containing triallylamine were prepared by the interfacial polymerization with branched polyethylenimine (PEI) as the water-phase macro-monomer and the prepared isocyanate end-capped polyurethane as the oil-phase macro-monomer. Finally, stable weak polyelectrolyte microcapsules were prepared by assembly of poly(acrylic acid)(PAA) and branehed PEI to build up polyelectrolyte multi-layers, and this was followed by glutaraldehyde mediated cross-linking to further increase the mechanical strength of the final capsules. Results showed that the obtained microcapsules were narrowly distributed in size and the mean diameter could be adjusted. This kind of capsule might be used to construct pressure-sensitive materials.

A new kind of triphenylene derivative sym-(OC3H6OCOC2H4COOH)6 with triphenylene at the core and carboxyl groups at the peripheral chains was synthesized and characterized by FT-IR and 1H-NMR. Thermal gravimetry analysis (TGA) and differential scanning calorimetry (DSC) showed that these compounds have a good thermal stability, which is dependent on the flexibility and interaction of the peripheral chains. Red shifts in electronic absorption spectra of the compounds were found in solution with increasing concentration.

Leuco crystal violet was oxidized with hydrogen peroxide to yield oxidized lecuo crystal violet(OLCV) containing three oxidized tertiary amine groups.Thermal properties of OLCV were measured by TGA and DSC.It was found that OLCV was a strong dissolution inhibitor for the thermo-sensitive composition based on phenolic resin,and the effect of OLCV on the imaging performance of the thermo-sensitive composition was also investigated.

This study presents an approach to prepare nano-sized silver particles via in-situ reduction process. First, a reversible addition fragmentation chain transfer (RAFT) agent, 2-(dodecylthiocarbonothioylthio)propanoic acid (DTPA), was synthesized and characterized. Actylic acid (AA) was polymerized in the presence of DTPA to afford an amphiphilic macro RAFT agent (DTPA-AC-10) with a calculated average degree of polymerization often. Latex particles with a sodium salt-containing shell were prepared by using sodium DTPA-AC-10 as a reactive surfactant. Then, through silver ion-exchange processs of the latex particles, the latex particles with silver salt at the surface were obtained. Finally, the silver salt at the particle surface was reduced through chemical reduction to give the silver-coated polymer particles. Dynamic Laser Scattering (DLS) was used to measure the particle size and distribution; X ray diffraction analysis (XRD) was employed to characterize the formed silver crystal in the particle surface. The diameter of the silver particles was about 76 nm and was narrowly distributed. The silver nanoparticles might be used to prepare conductive ink for ink-jet applications.

This paper is concerned with the improvement of the combined properties of a phenolic resin-based thermal imaging composition. A surfactant-like additive, stearamide, was introduced to the imaging material. When drying, the surfactanct material will move to the surface of the thermo-sensitive film to form a very thin layer due to the low surface energy. The thin layer was the so-called monolayer. It can be broken by the infrared laser and developed together with the resin of the exposed area. However, the unexposed area will be protected by this thin layer. As a result, the difference between the exposed area and unexposed area became larger, and the image tolerance and image quality were improved.