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Application of waterborne acrylic emulsions in coated controlled release fertilizer using reacted layer technology 被引量:4
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作者 申亚珍 赵聪 +1 位作者 周健民 杜昌文 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第1期309-314,共6页
Waterborne acrylic emulsions modified with organic siloxanes and aziridine crosslinker were synthesized and applied as coating of controlled release fertilizer. The free films were characterized and the nutrient relea... Waterborne acrylic emulsions modified with organic siloxanes and aziridine crosslinker were synthesized and applied as coating of controlled release fertilizer. The free films were characterized and the nutrient release profiles of the coated fertilizers were determined. The results show that methyl silicone oil and methylsilanolate sodium could not improve water resistance performance and glass transition temperature Tgof coatings, while the firmness is enhanced. Aziridine crosslinker improves the water resistance performance, firmness and Tg. Incorporation of methyl silicone oil and aziridine crosslinker gives an excellent aqueous acrylic emulsion for coated controlled release fertilizer, with the 30-day cumulative nutrient release reduced to 16% and an estimated nutrient release duration over 190 days. Therefore, this waterborne coating is promising to meet the requirements for controlled release of nutrient and environmental protection. 展开更多
关键词 Controlled release fertilizer acrylic emulsion SILOXANE CROSSLINKER Reacted layer technology
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PREPARATION AND STUDY ON SILICONE ACRYLATE MICRO-EMULSION OF MULTIPOLYMER
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作者 QINZonggen XIAZhengbin TUWeiping 《Chinese Journal of Reactive Polymers》 2004年第1期74-82,共9页
A silicone acrylate micro-emulsion of multipolymer was prepared by seed emulsion polymerization. The effects of polymerization process, emulsifier rate and amount, initiator rate and amount, polymerization temperature... A silicone acrylate micro-emulsion of multipolymer was prepared by seed emulsion polymerization. The effects of polymerization process, emulsifier rate and amount, initiator rate and amount, polymerization temperature, functional monomers, titration time on performances of emulsion have been discussed in detail. 展开更多
关键词 SILICONE Silicone acrylate micro-emulsion emulsion polymerization PREPARATION Study.
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PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF SODIUM ACRYLATE 被引量:2
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作者 Lian-yingLiu Zhi-xingZhang Wan-taiYang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2005年第2期219-225,共7页
Photoinitiated inverse emulsion polymerization of sodium acrylate(AANa)in kerosene was carried out at room orlower temperature,using 2,2-dimethoxy-2-phenylacetophenone(DMPA)as the initiator.Kinetic investigations indi... Photoinitiated inverse emulsion polymerization of sodium acrylate(AANa)in kerosene was carried out at room orlower temperature,using 2,2-dimethoxy-2-phenylacetophenone(DMPA)as the initiator.Kinetic investigations indicated thatthe polymerization could be completed in about 30 min and produce polymer with high molecular weight(10~6~10~7).It wasfound that monomer droplets are the main sites for the polymerization(nucleation).With the increase of DMPAconcentration,polymerization rate(R_p)reaches a maximum value while molecular weight of the produced polymer has anadverse result,but the dependence of R_p on incident light intensity is similar.Influences of other parameters such asmonomer concentration,emulsifier content and reaction temperature,etc.were also studied.At lower pH values of waterphase,R_p depends strongly on the pH due to the electrostatic interaction between the ionized radicals and the monomer.Athigher pH,R_p shows a slight dependence on pH. 展开更多
关键词 PHOTOPOLYMERIZATION Inverse emulsion Sodium acrylate Kinetics.
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Nonionic Polymerizable Emulsifier in High-Solids-Content Acrylate Emulsion Polymerization 被引量:3
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作者 鲁德平 管蓉 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第5期924-930,共7页
Stable high-solids-content acrylate emulsion were obtained with a nonionic polymerizable emulsifier allyloxy nonylphenoxy poly (ethyleneoxy) (10) ether (ANPEO10), and a conventional emulsifier OP-10 as a referen... Stable high-solids-content acrylate emulsion were obtained with a nonionic polymerizable emulsifier allyloxy nonylphenoxy poly (ethyleneoxy) (10) ether (ANPEO10), and a conventional emulsifier OP-10 as a reference sample. 1H NMR proves that the polymerizable emulsifier ANPEO10 has been incorporated into the resulted acrylate polymers. TEM demonstrates that there are some differences in the particle morphologies. AFM proves that the polymerizable emulsifier ANPEO10 migrating to the surface of the emulsion film was much less than the conventional emulsifier OP-10. The polymerizable emulsifier ANPEO10 can enhance the adhesion with glass plate compared to the conventional emulsifier. Furthermore, with increasing amount of emulsifier, the surface free energy of the films first decreased and then increased, and the adhesion with glass plate is initially enhanced and then attenuated. The water-resistance and solvent-resistance of the films prepared by the polymerizable emulsifier ANPEO10 are superior to those prepared by the conventional emulsifier OP-10. 展开更多
关键词 polymerizable emulsifier emulsion polymerization nonionic high-solids-content acrylate
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SEED SEMICONTINUOUS EMULSION MULTI-COPOLYMERIZATION OF (METH) ACRYLATES WITH HIGH-SOLID CONTENT: EFFECT OF THE OPERATION CONDITIONS
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作者 王文俊 于在璋 +1 位作者 李伯耿 潘祖仁 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1995年第2期162-172,共11页
The seeded semicontinuous emulsion multi-copolymerization of butyl acrylate (BA), 2-ethylhexyl acrylate (2EHA), methyl methacrylate (MMA), 2-hydroxyl propyl acrylate (HOPA) and acrylic acid (AA) was used to prepare th... The seeded semicontinuous emulsion multi-copolymerization of butyl acrylate (BA), 2-ethylhexyl acrylate (2EHA), methyl methacrylate (MMA), 2-hydroxyl propyl acrylate (HOPA) and acrylic acid (AA) was used to prepare the acrylic latexes with high-solid content. The effects of monomer emulsion feed rates (R(a)) and (R/E)(E) values, the ratio of emulsifier amount between the initial charge (R) and the addition monomer emulsion (E), on the polymerization reaction features, the viscosities, surface tensions,particle sizes and particle sizes distributions of latexes, T-g and the insoluble fractions of films, the 180 degrees peel strength, tack and holding power of pressure-sensitive adhesive (PSA) tapes, prepared from the latexes, were studied. Experimental study shows that the grafting and crosslinking fraction in the PSA tapes must be controlled within a suitable range to keep the balance of the 180 degrees peel strength, tack and holding power. 展开更多
关键词 emulsion POLYMERIZATION SEEDED SEMICONTINUOUS POLYMERIZATION LATEX HIGH-SOLID CONTENT ACRYLATE PRESSURE SENSITIVE ADHESIVES
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FT-IR Study on Crosslin king Reaction of Acrylates Copolymer Emulsions
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作者 Li Jianzong, Cheng Shiyuan Xu Zushun (Chemistry Department, Hubei University, Wuhan) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1991年第1期51-56,共6页
Introduction The emulsion of acrylate copolymers with actively functional groups have been widely developed and used as coating, adhesive and handling agent in spinning and weaving industry. Bessett, D. R. et al. stud... Introduction The emulsion of acrylate copolymers with actively functional groups have been widely developed and used as coating, adhesive and handling agent in spinning and weaving industry. Bessett, D. R. et al. studied the thermoset of N-(isobutoxymethyl) acrylamide by thermal evolution analysis and thermal gas chromatogram. Krejcar, 展开更多
关键词 emulsion polymerization Active monomer ACRYLATES Kinetics of crosslinking
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STUDY ON THE FORMATION MECHANISM OF MONODISPERSE PARTICLES IN THE EMULSIFIER-FREE EMULSION POLYMEAIZATION OF METHYL METHACRYLATE AND BUTYL ACRYLATE
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作者 张茂根 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2003年第1期77-85,共9页
The formation mechanism of monodisperse polymer latex particles in the emulsifier-free emulsion polymerizationof methyl methacrylate and butyl acrylate with potassium persulfate as initiator was investigated. A multi-... The formation mechanism of monodisperse polymer latex particles in the emulsifier-free emulsion polymerizationof methyl methacrylate and butyl acrylate with potassium persulfate as initiator was investigated. A multi-step formationmechanism for the monodisperse polymer particles was proposed. The nucleation mechanism is considered to be thecoagulation of the precursor particles by homogeneous nucleation when the primary particles reach a critical size with highsurface charge density and sufficient stability. It had been proved by a special experiment that the early latex particles formedby the coagulation were stable. The primary particles grow by absorbing monomers and radicals in the polymerization systemand then become colloidally unstable again due to the understandable decrease of particle surface charge density, which leadsto the aggregation of the growing particles and the formation of larger latex pedicles therefrom. Aner the nucleation period,the preferential aggregation of the smaller particles in the propagation process leads to the change of the particles towards auniform size and narrower particle size distribution. The coexistence and competition of homogeneous nucleation,coagulation, propagation and aggregation result in the increase of the polydispersity index (U = D_(43)/D_(10)) in the first Stage,then its decrease in the later stage because of the competition of propagation and aggregation, and the gradual formation ofthe monodisperse particles. 展开更多
关键词 Emulsifier-free emulsion polymerization LATEX Monodisperse particle Particle formation mechanism ACRYLATE
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Preparation of self-crosslinked acrylate emulsion with high elasticity and its rheological properties
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作者 陈立军 武凤琴 +2 位作者 李冬霜 杨建 李荣先 《Journal of Central South University of Technology》 EI 2008年第3期324-328,共5页
Using butyl acrylate(BA),methyl methacrylate(MMA),methacrylic acid(MAA) and mixed emulsifier as raw materials,the self-crosslinked emulsion was prepared via pre-emulsified and semi-continuous seeded emulsion polymeriz... Using butyl acrylate(BA),methyl methacrylate(MMA),methacrylic acid(MAA) and mixed emulsifier as raw materials,the self-crosslinked emulsion was prepared via pre-emulsified and semi-continuous seeded emulsion polymerization technology in the presence of N-hydroxymethyl acrylamide and poly solidum maleate. The influence of mass ratio of BA to MMA,amount of N-hydroxymethyl acrylamide and poly solidum maleate on the rheological properties of the self-crosslinked emulsion was studied. Possible cross-linked mechanism of self-crosslinked monomer was investigated. And the relationship between emulsion viscosity and shear rate was investigated. The results show that the self-crosslinked acrylate emulsion with high elasticity can be synthesized when the mass fractions of BA is 60%,MMA is 40%,and added amount of N-hydroxymethyl acrylamide is 2.5%-3.0% and added amount of poly solidum maleate is 0.3%-0.4%. The self-crosslinkage process of N-hydroxymethyl acrylamide involves two steps. One is copolymerization of N-hydroxymethyl acrylamide and acrylate,the other is cross-linkage among polymer molecules via condensation reaction of methylol. The emulsion is of rheological properties of pseudo-plastic fluid and belongs to non-Newtonian fluid. 展开更多
关键词 self-crosslinkage acrylate emulsion rheological properties condensation reaction
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STUDIES ON HIGH SOLID CONTENT AND STABLE EMULSIFIER—FREE EMULSION POLYMERIZATION
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作者 Tang Guangliang Hao Guangjie +1 位作者 Song Moudao Zhang Banghua 《Chinese Journal of Reactive Polymers》 1998年第2期61-67,共7页
In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow beha... In this article, AHPS (3 - allyloxy- 2 -hydrory- 1 -Propanesulfonate salt) wassynthesized to use in emulsifier-Ne emulsion polymerization of BA/BMa/MMA systemfor high solid content latexes. Storage stability klow behavior of the latexes,morphology of the obtained latex particles, dynamic viscoelastic behavior, tensilestrength and water resistance properties of the resulted copolymers were investigated.The experimental results show that with the addition of AHPS, stability of the emulsionis greatly improved that there appears no apparent precipitation dunring thepolymerization and storage at room temperature for 6 months and at -10℃ for fourmonths. Flow of the latexes follows the Bingham body laws, diameter of the latexparticles is about 0.6μn, of which is larger than that of by conventional emulsionpolymerization(0.12μm). In addition, not only water resistance of the copolymersobtained by emulsifier-free emulsion polymerization is greatly improved, but alsotensile strength is obviously enhanced. 展开更多
关键词 EMULSIFIER-FREE emulsion polymerization ACRYLATE Allyloxy-2-hydrory-I-propanesulfonate saft
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Emulsion Binders with Multiple Crosslinked Structures for High-Performance Lithium-Sulfur Batteries
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作者 Ya-Fang Tan Wen-Qiang Wang +2 位作者 Ling Gao Ai-Guo Guan Geng-Chao Wang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2023年第7期1027-1036,共10页
Lithium-sulfur batteries suffer a lot from the huge volume change and the shuttle effect. However, conventional poly(vinylidene fluoride) binder has intrinsic drawbacks, such as low ion conductivity, weak polysulfide-... Lithium-sulfur batteries suffer a lot from the huge volume change and the shuttle effect. However, conventional poly(vinylidene fluoride) binder has intrinsic drawbacks, such as low ion conductivity, weak polysulfide-trapping ability, poor mechanical properties, and requirement of organic solvents. Herein, we designed a functional emulsion binder with multi crosslinked structure. Such a structure was formed by the covalent crosslinking within and between the emulsion particles, which facilitates the adapting of the volume expansion of sulfur cathode, thereby ensuring the integrity of electrodes. Besides, the polar functional groups endow the binder with strong chemisorption of lithium polysulfide and fast lithium-ion migration ability. Thus, the assembled lithium-sulfur battery displayed a high initial discharge capacity of 1246 mAh·g^(−1) at 0.1 C, and a capacity fading rate of 0.04% per cycle after 500 cycles at 0.5 C. Even at a high sulfur mass loading of 4.8 mg·cm^(−2), a high capacity of 956 mAh·g^(−1) was still obtained at 0.2 C. 展开更多
关键词 Acrylate copolymer Internal and external crosslinking emulsion binders Lithium-sulfur batteries
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复合型水性丙烯酸树脂乳液的制备和性能 被引量:1
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作者 王利敏 宋晓宇 +1 位作者 程森祥 陈彤 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2024年第3期39-47,共9页
采用低玻璃化转变温度、高分子量的丙烯酸树脂乳液与高玻璃化转变温度、低分子量的丙烯酸树脂分散体混合的方式,制备了无交联剂水性丙烯酸树脂复合乳液,用于彩印包装纸与塑料薄膜的热复合。以丙烯酸、丙烯酸丁酯、苯乙烯、丙烯酸羟乙酯... 采用低玻璃化转变温度、高分子量的丙烯酸树脂乳液与高玻璃化转变温度、低分子量的丙烯酸树脂分散体混合的方式,制备了无交联剂水性丙烯酸树脂复合乳液,用于彩印包装纸与塑料薄膜的热复合。以丙烯酸、丙烯酸丁酯、苯乙烯、丙烯酸羟乙酯等为原料,采用种子乳液聚合法制备了相对分子质量(1.48~1.84)×10^(5)、玻璃化转变温度(T_(g))﹣20~﹣40℃的丙烯酸酯乳液。以丙烯酸、丙烯酸丁酯、苯乙烯、α-甲基苯乙烯、马来酸单酯等为原料,采用本体聚合法制备了相对分子质量(1.34~1.65)×10^(4)、T_(g) 20~45℃、软化点80~105℃的固体树脂,进一步采用自乳化方法将固体树脂制备成树脂水分散体。考察了不同Tg的丙烯酸酯乳液与水分散体以不同比例混配后的乳液混合体的性能。研究结果表明,T_(g)为﹣27.6℃的丙烯酸酯乳液与Tg为28.2℃固体树脂的分散体以质量比8:2混合后,用于PET膜-黑色印刷纸的热复合,剥离强度达到5.6 N/25 mm,持粘性达270 h,可以充分满足覆膜材料的附着力和耐压纹等性能要求。 展开更多
关键词 丙烯酸树脂乳液 树脂水分散体 热覆膜 剥离强度 持粘性
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水乳型自消光丙烯酸酯共聚物涂层的制备
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作者 王娟 马鑫磊 +2 位作者 夏宇正 陈晓农 石淑先 《精细化工》 EI CAS CSCD 北大核心 2024年第8期1848-1856,共9页
以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)为主单体,选择同时带长亲水链段和长疏水链段的二十二烷基醇聚氧乙烯醚-25甲基丙烯酸酯(BEM)为功能单体,连同BEM混合液中含有的甲基丙烯酸(MAA)通过乳液共聚制备了丙烯酸酯共聚物乳液... 以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)为主单体,选择同时带长亲水链段和长疏水链段的二十二烷基醇聚氧乙烯醚-25甲基丙烯酸酯(BEM)为功能单体,连同BEM混合液中含有的甲基丙烯酸(MAA)通过乳液共聚制备了丙烯酸酯共聚物乳液,并以此乳液制备了涂层。在BEM用量为15.0%(以3种主单体St、BA和MMA总质量为基准,下同)的条件下,考察了3种乳化剂复配比例、缓冲剂(Na HCO_(3))加入方式对聚合稳定性、单体转化率的影响;在固定乳化剂复配比例、Na HCO_(3)全部随引发剂溶液同时加入的条件下,考察了BEM用量(0、5.0%、10.0%、15.0%、20.0%)对涂层光泽度和透光率的影响。采用FTIR、SEM、AFM表征了涂层的结构组成和表面形貌。结果表明,利用乳化剂与功能单体BEM长烷基链之间的疏水相互作用,通过复配乳化剂及随引发剂共同滴加缓冲剂Na HCO_(3)的方式,可提高聚合稳定性(絮凝率为0.38%)和单体转化率(≥98%)。利用长链烷基自迁移构建粗糙表面可提高涂层自消光性能,在BEM用量为20.0%时可保持高透光率(≥89%)和低光泽度(35.4%),实现了涂层消光性能和透光性能的统一。 展开更多
关键词 自消光 二十二烷基醇聚氧乙烯醚-25甲基丙烯酸酯 乳液聚合 光泽度 透光率 丙烯酸系列化学品
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微纳层叠技术对ACM/PP热塑性弹性体性能的影响
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作者 杨帆 罗讴阳 +3 位作者 李明谦 劳志超 阎华 马秀清 《塑料》 CAS CSCD 北大核心 2024年第3期88-92,98,共6页
采用微纳层叠共挤出技术制备了ACM/PP热塑性硫化胶(TPV),研究了动态硫化温度、橡塑比、相容剂含量、炭黑与增塑剂含量对TPV力学性能与耐油性能的影响。结果表明,当动态硫化温度为190℃时,TPV具有较好的力学性能,拉伸强度、断裂伸长率、... 采用微纳层叠共挤出技术制备了ACM/PP热塑性硫化胶(TPV),研究了动态硫化温度、橡塑比、相容剂含量、炭黑与增塑剂含量对TPV力学性能与耐油性能的影响。结果表明,当动态硫化温度为190℃时,TPV具有较好的力学性能,拉伸强度、断裂伸长率、硬度、压缩永久变形分别为12.83 MPa、104.67%、86.50%、50.00%;随着TPV橡塑比的增大,材料的拉伸强度、断裂伸长率、硬度、耐油性能明显降低;当相容剂PP-g-MAH(马来酸酐接枝聚丙烯)的含量为15份时,TPV的综合力学性能与耐油性能最佳;TPV的拉伸强度、压缩永久变形、硬度随炭黑含量的增加而升高,随增塑剂DOTP含量的增加而降低,TPV的耐油性随炭黑含量的增加而提高,随DOTP含量的增加而变差,TPV的断裂伸长率随炭黑与DOTP含量的增加而降低。 展开更多
关键词 微纳层叠 热塑性弹性体 丙烯酸酯橡胶 聚丙烯 耐油性能
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水性环氧乳液/海泡石复合改性苯丙乳液涂层粘结性能研究
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作者 何丽红 李青林 +2 位作者 徐心硕 周超 李斯 《化工新型材料》 CAS CSCD 北大核心 2024年第1期203-206,共4页
采用物理共混法制备水性环氧乳液/海泡石复合改性苯丙乳液涂层,探讨了苯丙-水性环氧乳液配比,三乙醇胺、填料及乳化沥青掺量对涂层粘结强度的影响,同时考察了复合涂层的抗渗性和耐高低温性。结果表明,当苯丙乳液与水性环氧乳液的有效质... 采用物理共混法制备水性环氧乳液/海泡石复合改性苯丙乳液涂层,探讨了苯丙-水性环氧乳液配比,三乙醇胺、填料及乳化沥青掺量对涂层粘结强度的影响,同时考察了复合涂层的抗渗性和耐高低温性。结果表明,当苯丙乳液与水性环氧乳液的有效质量比为1∶2,三乙醇胺、海泡石和乳化沥青掺量分别为2%、3%、5%时,复合涂层粘结强度为3.54MPa,与钢板间具有较好的相容性,且不透水性和耐高低温性优良。 展开更多
关键词 苯丙乳液 水性环氧树脂 共混改性 粘结强度 影响因素
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水性饰面型防火涂料的制备及其耐火性能研究
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作者 袁忠大 张小锋 《电镀与涂饰》 CAS 北大核心 2024年第2期116-122,共7页
[目的]配方对防火涂料的性能有很大影响。[方法]以苯丙乳液和硅溶胶作为基料,聚磷酸铵、季戊四醇和三聚氰胺作为阻燃体系,二氧化钛作为颜填料,六偏磷酸钠作为分散剂,磷酸三丁酯作为消泡剂,羧甲基纤维素作为增稠剂,研制了一种适用于钢结... [目的]配方对防火涂料的性能有很大影响。[方法]以苯丙乳液和硅溶胶作为基料,聚磷酸铵、季戊四醇和三聚氰胺作为阻燃体系,二氧化钛作为颜填料,六偏磷酸钠作为分散剂,磷酸三丁酯作为消泡剂,羧甲基纤维素作为增稠剂,研制了一种适用于钢结构的水性饰面型复合膨胀防火涂料。利用模拟大板燃烧试验考察了各组分的质量分数对涂料性能的影响,并采用扫描电镜(SEM)对防火涂层燃烧后的微观结构进行表征。[结果]最佳配方为:苯丙乳液20.0%,硅溶胶4.0%,聚磷酸铵27.0%,季戊四醇22.0%,三聚氰胺21.0%,颜填料4.0%,助剂2.0%。此时涂料的耐燃时间长达57 min,燃烧后形成的炭层致密。[结论]该涂料具有良好的防火阻燃效果。 展开更多
关键词 水性苯丙乳液 硅溶胶 饰面型防火涂料 耐火性能 炭层 微观结构
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2024年一季度中国涂料、颜料行业经济运行简析
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作者 王臻 齐祥昭 +2 位作者 李力 马军 陈钢 《中国涂料》 CAS 2024年第4期9-13,共5页
简析了2024年第一季度我国涂料行业生产、经营和涂料、无机颜料行业进出口简况,并对丙烯酸乳液、环氧树脂等重点成膜物质市场进行了综述和预测。对2024年一季度涂料行业双指数进行了分析,并对二季度市场进行了预测。
关键词 2024年 一季度 经济运行 涂料、颜料行业 进出口 价格指数 钛白粉 氧化铁 丙烯酸乳液 环氧树脂
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丙烯酸-没食子酸基新型改性转锈剂乳液及耐高温涂料的合成研究
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作者 汪秀 《长春师范大学学报》 2024年第8期99-103,117,共6页
转锈剂具有反应条件温和、高效等优点,因此被广泛应用于金属表面的防锈处理。为解决大型钢材建筑除锈难的问题,本研究以丙烯酸、没食子酸为原料,采用种子乳液聚合法制备了一种新型的转锈剂乳液,并以此为成膜物质。以环氧树脂、多异氰酸... 转锈剂具有反应条件温和、高效等优点,因此被广泛应用于金属表面的防锈处理。为解决大型钢材建筑除锈难的问题,本研究以丙烯酸、没食子酸为原料,采用种子乳液聚合法制备了一种新型的转锈剂乳液,并以此为成膜物质。以环氧树脂、多异氰酸酯为主要原料,采用溶胶-凝胶法制备了一种耐高温涂料。结果表明,改性丙烯酸转锈乳液粒径相对均匀,涂覆锈转化涂料的样品腐蚀电位为-0.613 V,比裸钢及附着锈钢的腐蚀电位要低得多,对锈转化有一定的抑制作用。通过一系列单因素实验得出耐高温涂料的最佳制备条件为:研磨时间为50 min、分散时间为60 min、颜基比为3.0、漆膜厚度为300μm、固化剂用量为15%。研究制得的转锈剂乳液稳定性较好,耐腐蚀性能优异,可实现金属设备的防腐蚀要求。 展开更多
关键词 丙烯酸 没食子酸 转锈剂乳液 耐高温涂料 耐蚀性
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硅系无机防腐涂料的制备及性能 被引量:2
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作者 纪发达 黄志杰 《电镀与涂饰》 CAS 北大核心 2024年第4期144-149,共6页
[目的]硅系无机涂料的耐水性较差,固化过程中易发生起皮、开裂,使用后出现干擦掉粉现象,以及使用寿命短的问题亟需解决。[方法]以硅酸钾、硅溶胶和丙烯酸乳液为主要成膜物,结合钛白粉和石墨烯作为颜填料,再辅以适当的助剂,制得硅系无机... [目的]硅系无机涂料的耐水性较差,固化过程中易发生起皮、开裂,使用后出现干擦掉粉现象,以及使用寿命短的问题亟需解决。[方法]以硅酸钾、硅溶胶和丙烯酸乳液为主要成膜物,结合钛白粉和石墨烯作为颜填料,再辅以适当的助剂,制得硅系无机防腐涂料。讨论了高模数硅酸钾溶液的稳定性,助剂的选择,以及成膜物、颜填料的用量对涂料性能的影响。[结果]该涂料不含游离甲醛,不含汞、镉等重金属,VOC(挥发性有机物)含量低,且具有优异的贮存稳定性、防腐性、阻燃性、耐水性、耐碱性、耐冲击性等性能。[结论]该涂料克服了传统无机硅酸盐涂料存在的缺点,满足建筑内外墙涂料相关标准的要求。 展开更多
关键词 硅系无机涂料 硅酸钾 丙烯酸乳液 石墨烯 贮存稳定性 耐水性 防腐蚀
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长开放期EPI木材胶粘剂的制备与性能表征 被引量:1
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作者 余桂勋 黄鹤 《中国胶粘剂》 CAS 2024年第2期49-56,共8页
通过特定的乳液聚合工艺,制备了一款苯丙乳液(SAEP2),并将其应用于木材胶粘剂。系统地考察了聚乙烯醇的聚合度和浓度、异氰酸酯固化剂用量以及钙粉用量对胶粘剂开放期及粘接强度的影响。研究结果表明:胶粘剂开放期会随着聚乙烯醇的聚合... 通过特定的乳液聚合工艺,制备了一款苯丙乳液(SAEP2),并将其应用于木材胶粘剂。系统地考察了聚乙烯醇的聚合度和浓度、异氰酸酯固化剂用量以及钙粉用量对胶粘剂开放期及粘接强度的影响。研究结果表明:胶粘剂开放期会随着聚乙烯醇的聚合度和浓度、异氰酸酯固化剂用量、碳酸钙粉末用量的增大而缩短;当m(SAEP2)∶m(10%的BP17水溶液)∶m(钙粉)=1∶1∶1,且异氰酸酯固化剂用量为13%时,制备的SAEP2胶粘剂湿强度达标(可达5.4 MPa),而开放期长达150 min。 展开更多
关键词 木工胶粘剂 开放期 苯丙乳液 聚乙烯醇
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极端顶点法制备碳酸钙超疏水涂层
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作者 程远 吴鹏 +2 位作者 刘鑫 乃学瑛 董亚萍 《盐湖研究》 CAS CSCD 2024年第2期17-23,共7页
目前,超疏水涂层存在着制备成本高、工艺复杂和环境污染等问题,阻碍了其工程化应用进程。文章以CaCO_(3)晶须及其纳米粒子为填料,水性苯丙乳液为粘结剂,以及硬脂酸锌为疏水改性剂制备超疏水涂层。首先采用油酸对CaCO_(3)晶须及其纳米粒... 目前,超疏水涂层存在着制备成本高、工艺复杂和环境污染等问题,阻碍了其工程化应用进程。文章以CaCO_(3)晶须及其纳米粒子为填料,水性苯丙乳液为粘结剂,以及硬脂酸锌为疏水改性剂制备超疏水涂层。首先采用油酸对CaCO_(3)晶须及其纳米粒子进行表面改性,然后基于极端顶点设计将改性后的CaCO_(3)晶须、改性后的纳米CaCO_(3)、苯丙乳液和硬脂酸锌为混合分量进行混料实验,以涂层接触角为响应变量建立回归模型,分析混合分量对接触角的影响。结果表明:采用不同形貌的CaCO_(3)粉体复合苯丙乳液可制备出超疏水涂层,在纳米CaCO_(3)与硬脂酸锌混合分量较高,CaCO_(3)晶须混合分量较低以及苯丙乳液适中的区域,接触角可达153.5°。通过表面形貌分析,涂层的黏附性与其表面的孔洞有关,而较高的纳米CaCO_(3)混合分量可降低涂层表面粗糙度,促进其超疏水性能。 展开更多
关键词 碳酸钙晶须 苯丙乳液 超疏水 涂层 极端顶点法
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