Synthesis and characterization of polyacrylate composite with thiol‐modified nanosilica as chain transfer agent

Wu, Jianbing; Li, Ping; Ma, Xiaolong; Liang, Qingfeng; Yuan, Tuan; Ma, Guozhang

doi:10.1002/app.42756

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Polyacrylate resin has the advantage of light color, good gloss and color retention, high hardness, water resistance, corrosion resistance and UV resistance, which are widely used in furniture, metal, plastic, leather, paper, building and textile finishing [3,4]. The main factor for the rapid development of water-based acrylic resin is its outstanding performance, but it also inevitably has some disadvantages, mainly reflecting its heat-adhesiveness and cold brittleness after resin drying, and heat resistance, which is not good [5,6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Polyester Modified Waterborne High Hydroxyl Content and High Solid Content Polyacrylate Emulsion

2019

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A high hydroxyl content waterborne polyester-acrylate emulsion was successfully synthesized in two steps. Firstly, the carboxyl terminated unsaturated polyester was synthesized, then it was reacted as a monomer with acrylate monomer by emulsion polymerization using the semi-continuous seeded method. The effects of the amount of hydroxyethyl methacrylate (HEMA), the ratio of polyester/acrylic, the ratio of soft/hard monomer, and the content of chain transfer agent to the properties of the composite emulsion were investigated. Through a variety of tests, both the emulsion and film properties of the composite emulsion were better than polyacrylate emulsion. The introduction of polyester improved the flexibility and impact resistance of hydroxyl acrylate film, and made the modified resin have advantages of both.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Polyester Modified Waterborne High Hydroxyl Content and High Solid Content Polyacrylate Emulsion

2019

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“…Waterborne acrylate coatings have been developed since 1950s and rapidly in the early 1970s. On account of its excellent light fastness and outdoor aging resistance, waterborne acrylate coatings have become a kind of synthetic resin coating with the best application and comprehensive performance in the waterborne coatings system, which are widely used in furniture, metal, plastic, leather, paper, building, and textile finishing …”

Section: Introductionmentioning

confidence: 99%

Synthesis of stable high hydroxyl content self‐emulsifying waterborne polyacrylate emulsion

Zhang

Zhu

2017

J of Applied Polymer Sci

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The stability of hydroxyl polyacrylate emulsion was studied from two aspects of the structure of latex particles and polymerization conditions. Waterborne polyacrylate was prepared through seeded semicontinuous emulsion polymerization method with pre-emulsification process. HEMA was used to provide a high content of hydroxyl group, and the reactive emulsifier SE-10 was introduced to substitute for the traditional emulsifier. The best conditions including polymerization process and temperature, monomer types and dropping time were determined, and the effects of emulsifier content and addition method, HEMA content, chain transfer agent content, and soft/hard monomer ratio on the properties of emulsion were investigated. Through the optimization of polymerization conditions and the control of the structure of particles, we have successfully synthesized the core-shell structure of polyacrylate emulsion with a good appearance, low viscosity and a solid content of 46.5%. The hydroxyl polyacrylate exhibits good performance, which has great potential in development and application.

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Cross-Linked Polythiomethacrylate Esters Based on Naphthalene—Synthesis, Properties and Reprocessing

2020

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Two structurally different aromatic dithioesters were synthesized from two dithiols and methacryloyl chloride. The polymer networks based on methyl methacrylate and/or styrene and the new dimethacrylates were subsequently prepared. The polymerization yields of copolymers were in the range of 95–99%. The thermal and mechanical properties of the copolymers were determined by means of differential scanning calorimetry (DSC), thermogravimetric analysis (TG/DTG), and Shore D hardness. The addition of dithioesters—1,5-NAF-S-Met (or 1,4(1,5)-NAF-CH2S-Met) (from 0.5% to 5%) to MMA- or ST-based polymers results in lowering the glass transition temperature (Tg) by about 8 °C. The thioester-containing polymers based on MMA exhibit lower thermal stability than those with ST. The polythioesters are stable up to 250 °C. The UV/vis spectra and refractive indexes of prepared liquid compositions were also measured. The 1,5-NAF-S-Met (and 1,4(1,5)-NAF-CH2S-Met) improved the refractive index values of ST and MMA compositions. The double bond conversion was also determined for all synthesized materials. The swelling studies of polymers with 20% addition of thioester crosslinkers were investigated. For all polymeric materials with 20% addition of thioesters, depolymerization of the network was carried out by thiol-thioester exchange. The depolymerization products were re-reacted in a thiol-ene reaction with 2-hydroxyethyl methacrylate by thermal initiation. The thiol-ene procedure enabled reprocessing of starting polymers and obtaining new materials characterized by distinctly different thermal, mechanical, and swelling properties. The thiol-ene materials exhibit a lower Shore hardness in the range of 20–50 °Sh, as well as decreased Tg values when compared to starting copolymers. Due to these possible exchange reactions, one can facilely manipulate the properties of the polymers which could lead to the manufacturing of the new products with the desired features. Degradation of the cross-linked structure and recycling of copolymers were also discussed.

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Synthesis and characterization of polyacrylate composite with thiol‐modified nanosilica as chain transfer agent

Cited by 3 publications

References 29 publications

Preparation and Properties of Polyester Modified Waterborne High Hydroxyl Content and High Solid Content Polyacrylate Emulsion

Preparation and Properties of Polyester Modified Waterborne High Hydroxyl Content and High Solid Content Polyacrylate Emulsion

Synthesis of stable high hydroxyl content self‐emulsifying waterborne polyacrylate emulsion

Cross-Linked Polythiomethacrylate Esters Based on Naphthalene—Synthesis, Properties and Reprocessing

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