Improve surface levelling of powder coating with semi-crystalline polyester resin

Li, Yong; Liu, Liang; Gu, Yuxin; Xie, Jing; Zhang, Jie; Qu, Jinqing

doi:10.1016/j.porgcoat.2016.05.016

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…It was pointed out that during the oven-curing process, the film-forming mechanisms (melting, fluidizing, gelation point, and curing process properties) of powder paints differed from those of liquid paints. The curing process has been reported to affect both the aesthetic and protective properties of powder paints (Li et al 2016). The reason for the high rates of thickness swelling for the waterbased paint applied to the surfaces of the panels arose from its low film thickness.…”

Section: Thickness Swelling and Water Absorptionmentioning

confidence: 99%

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Application of electrostatic powder coating on wood composite panels using a cooling method. Part 1: Investigation of water intake, abrasion, scratch resistance, and adhesion strength,

Akkuş

Akbulut

Candan

2019

BioRes

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Powder coating is environmentally friendly and safe in terms of human health and is used especially on home appliances and in the automotive sector. Because of these advantages, recent studies have expanded work on the application of powder coating on non-conductive surfaces. Within the scope of this research, low temperature curing (120 °C to 130 °C) was applied on wood-based composite panels of medium-density fiberboard (MDF), particleboard, and plywood to facilitate conductivity. Epoxy, polyester, and hybrid (epoxy-polyester) types of powder paint and water-based liquid paint (control group) were applied to the surface of materials. Panels coated with the powder coatings were compared to the panels coated with the water-soluble acrylic resin coating. The prepared samples were analyzed for performance properties. The best results for thickness swelling, water absorption, adhesive strength, abrasion, and scratch resistance were found for the plywood coated with water-based liquid paint, MDF coated with polyester-based powder paint, plywood coated with hybrid powder paint, particleboard coated with hybrid powder paint, and plywood coated with epoxy powder paint, respectively.

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Section: Thickness Swelling and Water Absorptionmentioning

confidence: 99%

“…In the third stage, the viscosity increases rapidly when the powder coating undergoes cross-linking. According to the curing mechanism of the powder coating, the leveling performance of the film depended on the rheological behavior in the second and third stages (Li et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Application of electrostatic powder coating on wood composite panels using a cooling method. Part 1: Investigation of water intake, abrasion, scratch resistance, and adhesion strength,

Akkuş

Akbulut

Candan

2019

BioRes

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“…Resiflow PV 5 is a white and free flowing powder, specifically developed as a flow and levelling control agent to correct surface imperfections in powder coating and injection molding systems. Benzoin can prevent pinholes due to degassing [30]. Three formulations consisting of various TMPMP contents and PLCs with different MWs were tested, as shown in Table 4.…”

Section: Uv Powder Coatingmentioning

confidence: 99%

Limonene-derived polycarbonates as biobased UV-curable (powder) coating resins

2021

Focus on Powder Coatings

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“…1,6-Hexanediol (HDO) is a commonly used monomer in polyester polyols with applications in adhesives, elastomers, and coatings, including hot melt adhesives, powder coatings, solvent-borne coatings, water-based coatings, and UV-cure coatings. , The HDO market is expected to grow up to $1.4 billion by 2025 at a compound annual growth rate of 8% . Polyesters containing HDO impart cured coatings with desired flexibility and formability, ,, behave as flow modifiers in powder coatings to improve surface leveling, and are formulated into adhesives to generate adhesion strength. HDO is commercially produced from benzene through numerous reaction steps with low conversion (∼60%), high separation, and recycle costs, which use flammable solvents and release N 2 O as a byproduct .…”

Section: Introductionmentioning

confidence: 99%

Bio-based 1,5-Pentanediol as a Replacement for Petroleum-Derived 1,6-Hexanediol for Polyester Polyols, Coatings, and Adhesives

Zheng

McClelland²,

Rehmann

et al. 2022

ACS Sustainable Chem. Eng.

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Amorphous and semi-crystalline polyester polyols based on a novel, low cost, bio-based 1,5-pentanediol (Bio-PDO) were synthesized and formulated into solvent-borne coatings and hot melt adhesives. Bio-PDO may provide a lower cost, more sustainable, and non-petroleum-based alternative to polyols based on 1,6-hexanediol (HDO). The polyester polyols were characterized for end group composition, monomer incorporation, and thermal transitions. Bio-PDO-based coatings exhibited performance, including hardness, flexibility, adhesion strength, and solvent resistance, similar to the coatings based on petroleum-derived HDO. Bio-PDO-based adhesives exhibited lower green strength (initial adhesion strength) and longer open time (workable time to bond substrates) than HDO-based adhesives. The effects of common bio-based impurities, including lactones and mono-alcohols (δ-valerolactone and tetrahydrofurfuryl alcohol as examples of impurities), on polyester polyols were investigated. Hydroxyl functionalities of polyols were controlled by the excess diols in monomer feeds and were not impacted largely by the δ-valerolactone levels. High-level tetrahydrofurfuryl alcohol terminated the polyester ends with unreactive functionality. Deleterious effects on polyol hydroxyl functionality are not expected at the low impurity levels (<2 wt %) found in leading bio-PDO processes.

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Improve surface levelling of powder coating with semi-crystalline polyester resin

Cited by 9 publications

References 19 publications

Application of electrostatic powder coating on wood composite panels using a cooling method. Part 1: Investigation of water intake, abrasion, scratch resistance, and adhesion strength,

Application of electrostatic powder coating on wood composite panels using a cooling method. Part 1: Investigation of water intake, abrasion, scratch resistance, and adhesion strength,

Limonene-derived polycarbonates as biobased UV-curable (powder) coating resins

Bio-based 1,5-Pentanediol as a Replacement for Petroleum-Derived 1,6-Hexanediol for Polyester Polyols, Coatings, and Adhesives

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