The Inhibition Effects of Wood Light Induced Discoloration Coating with Water-Based Acrylic Varnish

In this paper, we used water-based acrylic varnish to coat poplar and pinus sylvestris veneer, discussed the inhibition effects of veneer light induced discoloration with two coating ways which were paint coating and film covering. The result showed that, after paint coating or film covering, the lightness aberration of veneer ΔL* and chromatism ΔE*ab were significantly reduced. The inhibition rate of veneer light induced discoloration with film covering was 7.88% higher than that with paint coating, reaching 30.41%.It mainly because of the small change of color index b* of film covered veneer, the water-based varnish film to a certain extent could inhibit the wood photochemical consequences by ray radiation. It’s feasible to study light induced discoloration of coated veneer by the method of film covering.

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Surface roughness and brightness of scots pine (Pinus sylvestris) applied with water-based varnish after densification and heat treatment

Journal of Wood Science ◽

10.1007/s10086-015-1506-7 ◽

2015 ◽

Vol 61 (6) ◽

pp. 586-594 ◽

Cited By ~ 7

Author(s):

Hüseyin Pelit ◽

Mehmet Budakçı ◽

Abdullah Sönmez ◽

Erol Burdurlu

Keyword(s):

Heat Treatment ◽

Surface Roughness ◽

Pinus Sylvestris ◽

Scots Pine ◽

Water Based

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Research of the Factor that Influence the Glossiness of Water-Based Tipping Paper Gravure Varnish

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.262.426 ◽

2012 ◽

Vol 262 ◽

pp. 426-429

Author(s):

Mao Jie Yu ◽

Bei Qing Huang ◽

Xian Fu Wei

Keyword(s):

Great Influence ◽

Water Soluble ◽

Wetting Agent ◽

Water Based ◽

Varnish Film ◽

Agent Flow ◽

Different Content

In order to prepare high-gloss water-soluble gravure varnish which is used on tipping paper, different content and types of filming resin with different content of all kinds of additives added are used to prepare water-soluble gravure varnish. Test its main performance and then use IGT apparatus to proof. The effect of varnish component and content on glossiness of water-soluble varnish is discussed by measuring glossiness of proof. The results show: different content and types of water-soluble filming resin have a great influence on the glossiness of water-soluble gravure varnish which is used on tipping paper; the glossiness of water-soluble varnish film can improve by adding auxiliaries such as cosolvent, substrate wetting agent, flow agent, wax emulsion and other promoter into water-soluble varnish system.

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The N34S mutation of SPINK1 may impact the kinetics of trypsinogen activation to cause early trypsin release in the pancreas

10.1101/2020.08.21.262162 ◽

2020 ◽

Author(s):

Zhuyezi Sun ◽

István Kolossváry ◽

Dima Kozakov ◽

Miklós Sahin-Tóth ◽

Sandor Vajda

Keyword(s):

Early Stage ◽

Significant Risk ◽

Significant Risk Factor ◽

Conformational Ensemble ◽

Inhibition Rate ◽

Trypsinogen Activation ◽

Small Change ◽

Dynamics Simulations ◽

The Impact ◽

Kinetics Of

ABSTRACTThe N34S variant of the trypsin inhibitor SPINK1 is the clinically most significant risk factor for chronic pancreatitis, but the underlying molecular mechanism could not be identified. Molecular dynamics simulations and docking of the generated conformational ensemble of SPINK1 to trypsin show that the mutation reduces the fraction of conformations that can directly participate in productive association, thereby reducing the association rate. The small change is difficult to detect by measuring the kinetics of SPINK1 binding to trypsin. However, kinetic modeling reveals that even a small change in the inhibition rate affects the trypsinogen to trypsin conversion rate at the early stage of the reaction when the trypsin concentration is very low, and the impact is substantially amplified by the autocatalytic mechanism of the conversion. Thus, the slightly reduced inhibition rate shortens the delay in the activation of trypsin release, which is therefore occurs within the pancreas.

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Effects of heat treatment systems on the physical properties of coated Scots pine (Pinus sylvestris L.) and poplar (Populus euramericana)

BioResources ◽

10.15376/biores.15.2.2708-2720 ◽

2020 ◽

Vol 15 (2) ◽

pp. 2708-2720 ◽

Cited By ~ 2

Author(s):

Ahmet Can

Keyword(s):

Heat Treatment ◽

Pinus Sylvestris ◽

Physical Properties ◽

Mass Loss ◽

Scots Pine ◽

Wood Species ◽

Color Change ◽

Vacuum Heat Treatment ◽

Populus Euramericana ◽

Water Based

Heat treatment is an environmentally friendly and efficient way to improve the properties of wood species. These treatments alter the substrates and can inﬂuence the surface properties of the varnish coatings. This paper investigated the effects of heat treatment on the physical properties of open and close systems Scots pine (Pinus sylvestris L.) and poplar (Populus euramericana) wood, coated with water-based, polyurethane-based, and oil/wax-based varnishes. Heat treatment was applied at the temperatures of 190, 212 °C for pine and 180, 200 °C for poplar, respectively. Color, gloss, and roughness tests were carried out for each of the coatings. Higher mass loss occurred in pine samples with heat treatment as compared to vacuum-heat treatment. Gloss decreased in OIL+WAX treatment and color change increased after the heat treatment, but these results were inhibited with vacuum-heat treatment. Maximum roughness was obtained in PUR varnishes and minimum roughness in OIL + WAX samples. The low roughness values provide some advantages in application.

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