International Journal of General Engineering and Technology

Number 7-3, 2018

1 - 18
Synthesis And Characterization of New Binders for Emulsion Coating Application Containing in Water Based Meth Acrylic Hybrid Resins

Authors: Mohamed Ali Mutar & Farah Safi Khliwi

Abstract

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Binder is an important ingredient in pigment coating as it is used to impart adhesion, gloss and flexibility to the dried film as well as binding the pigment particles together. Series of emulsion methacrylic copolymers having different composition ratios of methylacrylicacid (MAA) with butylacrylate (BuA), methylmethacrylate (MMA), styrene, poly vinyl alcohol (P.V.A) were prepared and characterized. The preparation was carried out in industrial scale in batch reactor at pH 7, using potassium persulphate(KPS) and Sodium metabisulfate (Na2S2O5) as an initiators, Dodecyl Benzene Sulphonic acid SDBA as an emulsifier,and sodium dodecyl sulfonic acid SDBAS as co-emulsifier in presence of tri metylchlorosilane(TMCS) at 70oC for 4 hours. The chemical structures of the prepared binders were characterized by FTIR and 1HNMRspectra. The various physic-chemical properties ofemulsion methacrylic copolymers including density, viscosity, chemical resistance and volatile matter were studied. The resultsshow thatemulsion acrylic copolymers are readily soluble in aprotic polar solvents such as (Toluene, Acetone, Benzene, xylene, DMF, DMSO, Methanol, and ethanol) without being in need for heating.The obtained emulsion copolymers had high solid content and were used in emulsion paints as binder. The experimental results show that these polymers supply very useful properties such as high anticorrosive. The binder film are evaluated by measuring their chemical resistance. Thermal analysis of emulsion copolymers are conducted by using thermo Gravimetric analysis (TGA) and thermal differential calorimeter (DSC) techniques, which reveals that theemulsion acrylic polymers possess thermal stability.

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Stablishing a Training Program for Qualifying Graduates in the Field of Necklaces Production

Authors: Wesam Yassin Sabbagh

Abstract

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Training is one of the fundamental basics which we can adapt to changes through it; because training has a strong and direct connection with the development, so we cannot obtain development if we do not have training. The aims of this research are preparing and evaluating a proposed training program for qualifying graduates to produce innovative necklace, and determine the effectiveness of this program in qualifying the graduates and allow them to acquire knowledge and skills to produce innovative necklaces, from the aspects of: Capacity, Skilled performance, Education time. The importance of this research is to sitting strategies for developing graduates’ skills in order to cover everything related to knowledge and skills which contribute in the production process to benefit from the proposed project in fashion accessories field. The training program was applied to 30 graduated fashion design students. The training program includes 4 sessions; First: recognize the different necklaces, Second: scissors in different sizes and shapes, needles in different sizes, pliers, threads, fabrics, different types of beads, fringes, pompoms, Shells, glue, wood, leather strips, metal chains, paper (small shreds), Third: Carrying out the different techniques used in necklace making, Fourth: Working on a number of necklaces using a combination of different materials and delivering final products in a creative and visual manner. The program was presented to a number of specialized professors to ensure its scientific and artistic correctness.