New thickener based on s-triazine di-sulfanilic xanthan for reactive printing of silk fabric with double-sided patterns

2018 ◽  
Vol 89 (11) ◽  
pp. 2209-2218
Author(s):  
Rumeng Li ◽  
Lili Wang ◽  
Bairan Hao ◽  
Minghua Wu ◽  
Wei Wang
Keyword(s):  
Xanthan Gum ◽  
Screen Printing ◽  
Sulfanilic Acid ◽  
Dynamic Strain ◽  
Silk Fabric ◽  
Viscous Effects ◽  
Shear Tests ◽  
Color Yield ◽  
Strain Sweep ◽  
External Forces

In order to achieve good double-sided printing patterns on silk fabric, a new thickener s-triazine di-sulfanilic xanthan (TDG) was prepared by chemical modification of xanthan gum (XG) using alkali and monochlorotriazine di-sulfanilic acid (TS) as modifiers. The structure of TDG was characterized by Fourier transform infrared spectrophotometry. Rheological behaviors were investigated by steady-shear, dynamic strain sweep and step-shear tests. The results indicated that TDG showed better flowability and smaller structural viscosity than XG. TDG always exhibited the viscous effects under external forces while XG experienced the transition from elasticity to viscosity. Used as a thickener in reactive printing of silk fabric in screen printing, TDG obtained much higher screenability, color yield, penetration and outline sharpness than XG. The double-sided printing qualities of TDG even surpassed those of sodium alginate, implying great potentiality of TDG as a good thickener for double-sided patterns.

Non-viscous effects in the flow of xanthan gum solutions through a packed bed of spheres

1995 ◽  
Vol 59 (2) ◽  
pp. 111-119 ◽  
Author(s):  
A. Helmreich ◽  
J. Vorwerk ◽  
R. Steger ◽  
M. Müller ◽  
P.O. Brunn
Keyword(s):  
Xanthan Gum ◽  
Packed Bed ◽  
Viscous Effects

Fractal Dimensions of Soy Protein Nanoparticle Aggregates determined by Dynamic Mechanical Method

2008 ◽  
Vol 1086 ◽  
Author(s):  
Lei Jong
Keyword(s):  
Fractal Dimension ◽  
Soy Protein ◽  
Fractal Dimensions ◽  
Protein Aggregates ◽  
Dynamic Strain ◽  
Dynamic Mechanical ◽  
Mechanical Methods ◽  
Particle Aggregates ◽  
Nanoparticle Aggregates ◽  
Strain Sweep

AbstractThe fractal dimension of soy protein aggregates can be estimated by dynamic mechanical methods when the particle aggregates are imbedded in a polymer matrix. Composites were formed by mixing hydrolyzed soy protein isolate (HSPI) nanoparticle aggregates with styrene-butadiene (SB) latex, followed by freeze-drying and compression molding methods. The dynamic shear moduli of the elastomeric composites containing different particle fractions were measured. A logarithmic plot of shear modulus vs. particle fraction in rubber plateau region at 140 oC can be fitted with a linear line. From the slope of the fitted line, the fractal dimension of the particle aggregates was estimated using the Cluster-Cluster Aggregation (CCA) model developed by Kluppel and Heinrich. The CCA model can also be used to extract fractal dimension from dynamic strain sweep experiments. The reversible strain sweep data was then fitted with a CCA model expression developed by Huber and Vilgis to yield the fractal dimension of the particle aggregates. The results show that the fractal dimensions extracted from both linear and non-linear viscoelastic data have a good agreement with each other. The model fitting indicates HSPI has a greater fractal dimension and therefore a more compact structure than the un-hydrolyzed soy protein aggregates.

Fabrication and Test of High-Temperature Ceramic Transformer

2014 ◽  
Vol 216 ◽  
pp. 233-238
Author(s):  
Conor Slater ◽  
Thomas Maeder ◽  
Peter Ryser
Keyword(s):  
High Temperature ◽  
High Frequency ◽  
Screen Printing ◽  
Shear Tests ◽  
High Reproducibility ◽  
Test Vehicle ◽  
Silicone Adhesive ◽  
High Frequency Transformer ◽  
Transformer Design ◽  
Manufacturing Yield

This work describes the fabrication and test of a high temperature (+200°C) capable high frequency transformer. It was manufactured using Low Temperature Co-fired Ceramic (LTCC) technology, which allowed the complex multilayer structure of ceramic and metal windings to be formed. However, the selected LTCC composition is a free sintering ceramic and there is an interaction between the metal conductor and the ceramic substrate during lamination and firing that can lead to significant deformation, presenting a significant engineering challenge. Here the fabrication process for the LTCC is described (screen printing, collation, lamination and firing) for a number of iterations of the transformer design, each of which was analysed for deformation and subjected to electrical tests. In addition a silicone adhesive for assembling the LTCC with the transformer was analysed for high-temperature performance. A test vehicle was assembled and it was subjected to 1000 hours at 210°C. Shear tests were performed at intervals to quantify the loss in bond strength over time. After a good solution for manufacture was found, a batch of transformers was produced, characterized and tested to demonstrate a high reproducibility and manufacturing yield.

scholarly journals REACTIVE DYE PRINTING ON COTTON FABRIC USING MODIFIED STARCH OF WILD TARO CORMS AS A NEW THICKENING AGENT

2021 ◽  
Vol 55 (9-10) ◽  
pp. 1119-1129
Author(s):  
RATTANAPHOL MONGKHOLRATTANASIT ◽  
◽  
CHAROON KLAICHOI ◽  
NATTADON RUNGRUANGKITKRAI ◽  
◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Screen Printing ◽  
Reactive Dye ◽  
Modified Starch ◽  
Color Fastness ◽  
Fastness Properties ◽  
Carboxymethyl Starch ◽  
Thickening Agent ◽  
Stiffness Properties ◽  
Color Yield

This study investigated the use of a thickening agent derived from modified starch of wild taro corms in the screen printing of cotton fabric using reactive dye. The best conditions for developing the print paste and steaming time in order to obtain maximum color yield were established. The results revealed impressive color fastness properties in the printed samples; although, the printed fabric possessed slightly lesser tensile and tear strength, in comparison with the unprinted fabric. The printed fabric also exhibited increased bending stiffness properties. Largely, this study reveals that the printing paste containing the thickening agent derived from carboxymethyl starch within wild taro corms can be utilized in the printing of cotton fabric using reactive dye.

CONTRIBUTION OF MECHANICAL ENGAGEMENT AND ENERGETIC INTERACTION IN REINFORCEMENT OF SBR-SILANE–TREATED SILICA COMPOSITES

2016 ◽  
Vol 89 (2) ◽  
pp. 292-305 ◽  
Author(s):  
Mohammad Alimardani ◽  
Mehdi Razzaghi-Kashani ◽  
Reza Karimi ◽  
Amirhossein Mahtabani
Keyword(s):  
Small Strain ◽  
Tension Test ◽  
Dynamic Strain ◽  
Test Results ◽  
Detectable Difference ◽  
Strain Sweep ◽  
Filler Network ◽  
Polymer Interactions ◽  
Filler Structure ◽  
Long Chain

ABSTRACT We evaluated the significance of mechanical engagement and energetic interaction between a polymer and a filler as two reinforcing mechanisms in SBR composites containing silica modified by short- and long-chain silanes. To exclude mechanical contributions of reinforcement from that of energetic contributions, surface energy of silica particles was systematically adjusted to prepare fillers of identical and diverse surface energies. Having analyzed interactions using a temperature sweep in a small-strain oscillatory test and a uniaxial tension test, results indicated that the chain length of the silane has remarkable influence on energetic filler–filler and filler–polymer interactions, but no detectable difference associated with filler–polymer mechanical engagement was observed from these experiments. However, dynamic strain sweep experiments showed that the rate of breakage of the filler network (Payne effect) is less for the composite having long-chain silane compared to that having short-chain silane. It was hypothesized that this behavior could be correlated to mechanical engagements of long-chain silanes existing on the filler structure.

Synthesis and properties of s-triazine di-sulfanilic guar gum as a thickener in reactive printing

2017 ◽  
Vol 88 (15) ◽  
pp. 1766-1775
Author(s):  
Lili Wang ◽  
Xiancheng Wang ◽  
Yifeng Shen ◽  
Jianzhong Shao ◽  
Fuyu Pei
Keyword(s):  
Sodium Alginate ◽  
Sodium Carbonate ◽  
Sodium Carbonate Solution ◽  
Guar Gum ◽  
Carbonate Solution ◽  
Synthesis Condition ◽  
Single Factor ◽  
Viscous Effects ◽  
Color Yield ◽  
Single Factor Experiment

S-triazine di-sulfanilic guar gum (TSG) was successfully prepared by monochlorotriazine di-sulfanilic (TS) and guar gum (GG) in order to improve the printing properties in reactive printing. The results showed that the optimized synthesis condition of TSG was at sodium carbonate solution 1.2 g/L at 90℃ for 75 min through the single-factor experiment. Compared to GG, TSG had better flowability, mainly viscous effects and higher viscosity recoverability, which was more appropriate as a thickener in reactive printing. In the cotton printing experiment, TSG had higher paste add-on, color yield, penetration and levelness than GG. Furthermore, the printing effects of TSG on cotton drew near to those of sodium alginate, which could obtain evenly colored large patterns and excellent outline sharpness.

Comparison of Rheological Behavior of Three Gel-Type Vehicles for Printing Ink

2013 ◽  
Vol 634-638 ◽  
pp. 2791-2795
Author(s):  
Jing Xu ◽  
Sheng Jun Zhang ◽  
Xin Ping Liu ◽  
Qing Hua Chen ◽  
Qing Rong Qian ◽  
...  
Keyword(s):  
Rheological Behavior ◽  
High Speed ◽  
Gelling Agent ◽  
Dynamic Strain ◽  
Temperature Sensitive ◽  
Frequency Sweep ◽  
Three Samples ◽  
Strain Sweep ◽  
The Stability ◽  
Printing Ink

Three gel-type vehicles were synthesised and their rheological behavior was investigated in this paper. The main differences of three samples are the concentraton of resin (R-1>> G-1> G-2) and gelata (R-1<< G-1< G-2). The results show that R-1 is more temperature sensitive which might not favorable for the high speed printing. G-2 and G-1, which contain higher amount of gelling agent, might have a enhanced net-structure due to the reaction between gelling agent and resin. And the results of dynamic strain sweep and frequency sweep indicate that the gelata can give a good viscoelastic to the vehicle while the higher amount of resin might benefit the stability of vehicle. Although the most suitable ratio of gel-vehicle desired further discovery, the rheological behavior could be a proper means as to optimize the formula of ink.

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