Abstract No. 8 of coatings industry 2019 (I)

Explore the development of
1, dopamine modified graphene oxide-TiO2 nanocomposite composite material in water-based ring resin physical properties and corrosion dynamics research
Excerpt: using dopamine (DA) modified graphene oxide (GO), and nanoTiO2 load on the surface of graphene oxide GO, prepared nano PDA@GO-TiO2 composite material. The structure, micromorphological, etc. of nano PDA@GO-TiO2 composites are characterized by FT-IR, XRD, Raman spectroscopy, XPS, and TEM. The modified nano PDA@GO-TiO2 composite material was dispersed into the water-based epoxy resin by combining ultrasonic dispersion with mechanical stirring, and the nano PDA@GO-TiO2 composite water-based epoxy resin coating (PGT/WEP)

. The physical properties of PPT/WEP coating, such as hardness, impact resistance and adhesion, were tested, and their electrochemical properties were evaluated. The results showed that adding nano-PDA@GO-TiO2 composites to water-based epoxy resins had better physical properties than coatings using GO or nano TiO2 at the same percentage. The coating performance and corrosion dynamics analysis show that PDA modified GO-TiO2 has potential applications as an additive for water-based epoxy coatings.
keywords: dopamine; graphene oxide; nanoTiO2; Composites; epoxy coating; physical properties; corrosion
Zhu Jiankang 1, Wang Jian 1, Rao Yongchao x 1, Bai Haoran 1, Feng Dacheng 1, Zhao Shuhua 1, Li Beibei 2 (1. Changzhou University School of Petroleum Engineering, Changzhou, Jiangsu 213016; 2. Yulin College of Chemistry and Chemical Engineering, Shaanxi Yulin 719000)
2, based on polyethylene pyridoxine synthesis of non-ionic hydroponic polyurethane
excerpts: acetone isobutyl cyanide (AIBN) as the trigger, isopropyl ethanol (IPGE) and -based ethanol (MCE) as chain transfer agents, synthesis of low-relative molecular quality single-end hydroxycodone (PVP). Toluene dicycyanate (TDI), polytetrahydrofuran ether glycol (PTMEG, Mn=1,000) as raw materials, 1,4-butyl glycol (BDO) and trihydroxymethyl propane (TMP) as small molecular chaining agents, add hydroxyl functional PVP as hydrophobic chain segment, synthesis of PVP as a non-ionic hydrophobic chain dispersion. Synthetic polyethylene pyridoxine and water-based polyurethane were analyzed and indicated by four-leaf infrared spectrometer (FT-IR), laser desolution substrate flight time mass spectrometry (MALDI-TOF), gel permeation chromatography (GPC) and other methods. The results show that the polyethylene pyridoxine chain segment can be used as a hydromassive polyurethane hydrophotic chain segment, and the synthetic non-ion polyurethane emulsion has the characteristics of electrolyte resistance and good freeze-thaw stability.
keywords: hydroxyl functionalization; non-ionized water polyurethane; polyethylene pyridoxine; hydro-water chain segment
Li Weidong, Zhang Yingshuang, Zhang Chi, Zhang Qi, Yan Long, Geng Wusong, Wang Wusheng ( Anhui University School of Chemical and Chemical Engineering, Hefei 230601)
3, the preparation and performance of the mononin acid modified UV curing coating film
Excerpt: the synthesis of tingate and isosanol as raw materials monosyl monosome (TAM) and isosanol-based active thinner (ISD) and applied to UV curing coatings. The performance of monosome structure and coating is measured by nuclear magnetism (1H NMR), infrared (FT-IR), thermal weight analyzer (TGA), differential scanning thermo meter (DSC), dynamic mechanical analyzer (DMA), and the effect of different contents of ISD on coating film performance is studied. The results show that the active thinner can optimize the performance of the coating in a certain range, with the increase of ISD content, the hardness of the coating film and the amount of energy storage are increased and then reduced, and the coating ISD 50 performance is best when the isD mass fraction is 50%.
keywords: tingate; isosanol; active thinner; UV curing
Hu Yaqi 1,2, Hu Yunyong 3, Fu Changqing x 1, 2, Shen Liang 1,2 (1. Jiangxi University of Science and Technology, School of Chemical and Chemical Sciences, Department of Coatings and Polymers; Nanchang 330013; 2. Jiangxi Province Water-based Coatings Engineering Laboratory, Nanchang 330013; 3. Suzhou Bai Xiaoxiao Medical Technology Co., Ltd., Jiangsu Suzhou 215000)
Technial technology
4, carbon nanotubes on the water-based epoxy-rich zinc anti-corrosion coating anti-corrosion properties of the impact
pick: carbon nanotubes (CNTs) in the form of water-based slurry added in epoxy emulsion, the preparation of CNTs modified water-based zinc-rich anti-corrosion coatings to solve the problem of high zinc content of traditional zinc-rich coatings. Through SEM to observe the shape of the coating, adhesion, impact resistance test characterized the mechanical properties of the coating, open-circuit voltage, polarization curve and salt spray and other methods to explore the carbon nanotube content on epoxy-rich zinc anti-corrosion coating corrosion resistance. The results showed that the addition of CNTs to the coating can enhance the impact resistance of the coating, and the effect of CNTs on coating adhesion was not significant; Compared with the blank group of 70.0% zinc content, the corrosion current density can also be reduced by 53.8%, and after the salt spray resistance experiment of 2,000 h, the coating still does not appear obvious corrosion phenomenon, that is, the addition of 0.2% content of CNTs to the 60.0% zinc content system can not only reduce the zinc content of the coating, but also enhance the corrosion resistance of the coating.
keywords: water-based epoxy; zinc-rich coatings; anti-corrosion properties; Carbon nanotubes
Liu Henghao 1,2, Sun Jing x1, 2,3, Jiang Cong 4 (1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041; 2. Chinese Academy of Sciences University, Beijing 100049; 3. Chengdu Organic Chemistry Co., Ltd., Chengdu, Chengdu, 4. Chengdu Hongrun Paint Co., Ltd., Chengdu 610015)
5, water-based hood varnish curing reaction rate and paint film performance research
pick: water-based varnish curing reaction rate for the "wet touch wet" process construction of the water-based three-coat-one-baking (3C1B) system has a great impact, water-based varnish curing reaction rate is mainly controlled by the ammonia-based resin as a cross-linked agent. In this paper, three different types of amino resins are red appearance (FT-IR) and their molecular structure is analyzed. The effect of the above amino resin on the water-based hood varnish curing reaction rate was probed by testing the change of shear storage volume of varnish during curing process by rotating the flow meter. The effect of amino resin on the paint film performance was analyzed by comparing the paint film performance of the prepared water-based hood varnish with the water-based 3C1B paint. The results show that the curing rate of water-based hood varnish with methyl ether mixed ether as crosslinker is suitable for 3C1B system, and the paint film preparation performance is the best.
key words: water-based varnish; amino resin; curing reaction rate; Paint film performance
Zhang Jingbin 1, Xue Guoming 1, Xu Jie 1, Yu Haikun 3, Gu Guangxin x1, 2, 3 (1. Fudan University, Shanghai 200433;2. Zhuhai Fudan Innovation Research Institute, Zhuhai, Guangdong 519,000; 3. Shanghai Electric Power University, Shanghai 200090)
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