Facile fabrication and modification of polyacrylate/silica nanocomposite latexes prepared by silica sol and silane coupling agent

Zhai, Liangfang; Lu, Deping; Niannian, Fan; Wang, Xiaoli; Guan, Rong

doi:10.1007/s11998-013-9513-3

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…Nano ZrO 2 and Al 2 O 3 particles were chemically modified by a silane coupling agent 28 , 29 . Then, polyurethane resin and different percentages (1, 3, and 5% w/w) of modified nano ZrO 2 and Al 2 O 3 particles were extruded in the twin screw extruder (Yantai Donghui Powder Processing Equipment Company, China).…”

Section: Methodsmentioning

confidence: 99%

Heat insulation effect in solar radiation of polyurethane powder coating nanocomposite

Azemati

Koloor

Khorasanizadeh

et al. 2021

Sci Rep

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This study aims to improve polyurethane-based coating by modified zirconium oxide and aluminum oxide nanoparticles for preparing thin polymeric heat insulation coatings. In the first step, the nanoparticles were chemically modified with the silane coupling agent. Then, three different weight percent of modified nanoparticles (1, 3, and 5% w/w) were mixed with polyurethane, to prepare the nanocomposites, which were coated on metallic plate samples. Then, these plates are used to measure the radiation heat transfer coefficients, absorption coefficient in a region of short wavelengths (UV/VIS/NIR), the emissivity coefficient, and thermography of the samples in a region of long wavelengths (IR). Results showed that by adding the modified nanoparticles to the polyurethane matrix, absorption was decreased and the emissivity coefficient was increased. According to the thermography results, it was observed that the surface temperature of both samples with 3% w/w of nanoparticles had the minimum temperature compare to others. Minimum heat surface observed for 3% w/w of modified nano zirconium oxide.

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Section: Methodsmentioning

confidence: 99%

Heat insulation effect in solar radiation of polyurethane powder coating nanocomposite

Azemati

Koloor

Khorasanizadeh

et al. 2021

Sci Rep

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“…The author believed that it was the hydrogen bond between the silanol group and the hydroxyl group rather than the hydrogen bond between the silanol and carbonyl group that played a major role in the formation of the raspberry-like core-shell nanocomposites. However, Zhai et al [91] insisted that there was a hydrogen bond between the silanol group and the carbonyl group. Qiu et al [92] explored the effect of ammonia concentration on the assembly efficiency of SiO 2 particles.…”

Section: Hydrogen Bonding and Other Actionsmentioning

confidence: 99%

Polymer@SiO2 Core–Shell Composite Particles: Preparation and Application

et al. 2023

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In recent years, core–shell composite particles with organic polymer as the core and inorganic SiO2 as the shell have attracted widespread attention and prompted robust scientific endeavors. The encapsulation of SiO2 can endow the polymer core with a variety of important properties, and is of great significance for the synthesis of multi–functional materials, having favorable application prospects in coating, polishing, medical, optical, magnetic, lubrication and other fields. In this paper, the recent advances in the preparation of core–shell polymer@SiO2 composite particles are reviewed. From the perspective of interface bonding mechanisms between the core and the shell, this paper mainly focused on the following five aspects: Pickering stabilization, acid–base interaction, charge interaction, bridging of coupling agent, hydrogen bonding, and other actions. Additionally, applications of core–shell polymer@SiO2 particles are also discussed. It is expected that this article can provide scientific guidance for the preparation of polymer@SiO2 core–shell particles, further enriching their species and broadening their applications.

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“…Furthermore, the numerous studies had shown that 3-(methacryloyloxy) propyltrimethoxysilane (KH-570), as a silane cross-linker, showed excellent practical function in the preparation of latex (Wang et al , 2012; Zhai et al , 2013; Zhu et al , 2009). KH-570 was commonly used to increase the mechanical strength, chemical stability and the degree of adhesiveness of the paper (Yan, 2015; Wang et al , 2015).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

Shao

Chen

2020

PRT

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Purpose Silane cross-linkers have been used to strengthen the mechanical stabilities and friction resistance of plastic products. Therefore, the effect of silane cross-linkers on latex has been studied through preparing modified self-cross-linking long fluorocarbon polyacrylate latex. In this paper, nonionic surfactant alcohol ether glycoside (AEG1000) and anionic polymerizable surfactant 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) acted as mixed emulsifier and 3-(methacryloyloxy) propyltrimethoxysilane (KH-570) and bis (2-ethylhexyl) maleate (DOM) were used as functional monomers. Design/methodology/approach The modified acrylate polymer latex was synthesized through the semi-continuous seeded emulsion polymerization with methyl methacrylate (MMA), butyl acrylate (BA), dodecafluoroheptyl methacrylate (DFMA) and hydroxypropyl methacrylate (HPMA) as main monomers. Potassium persulfate (KPS) was applied to initiate polymerization reaction, nonionic surfactant AEG1000 and DNS-86 acted as emulsifier, KH-570 and DOM were used as functional monomers, respectively. Findings The optimum conditions of synthesizing the modified latex were the following. The mass ratio of monomers containing MMA, BA, DFMA, HPMA, KH-570 and DOM was 13.58:13.58:0.90:1.20:0.15:0.60, the usage of initiator KPS was 0.5% of the total weight of monomers and the amount of emulsifier was 7% of all monomers with AEG1000:DNS-86 = 1:1. The results indicated that the conversion of monomer was 99% and the coagulation was about 2.0%. Originality/value The resultant latex was modified silane cross-linker KH-570 and DOM, which positively affected the comprehensive properties of latex and its film. Apart from this, the novel mixed emulsifier was used to improve the size and distribution of latex particles and reduce environmental problems caused by the use of emulsifiers.

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Facile fabrication and modification of polyacrylate/silica nanocomposite latexes prepared by silica sol and silane coupling agent

Cited by 10 publications

References 29 publications

Heat insulation effect in solar radiation of polyurethane powder coating nanocomposite

Heat insulation effect in solar radiation of polyurethane powder coating nanocomposite

Polymer@SiO2 Core–Shell Composite Particles: Preparation and Application

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

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