16-05-2013, 03:01 PM
Latest development in textile finishing
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What to talk in this presentation
Aims
Questioning latest development !
Global market in fiber - finishing consumption
The beauty of textile materials and finishing
The origin of textile chemical finishing
Guiding pillars in textile finishing
The development areas in textile finishing
How to identify the development areas
Some demanding areas in textile finishing.
Aims
An introduction to the recent advancement in textile chemical finishing
Emphasizing the relationship of development with local needs
Identifying the areas of interest for the latest development in textile finishing
Questioning latest development!
Few questions in latest development:
What are the latest development in textile finishing?
What should be the latest development in textile finishing?
Should the latest development in textile finishing should be stereotype in all around the world?
Figures in textile finishing development- I
The global market for fibres totalled 64 million tonnes in 2004 (moved up from 60 MT).
Synthetic fibres (40 MT), natural fibres (24 million tonnes). The breakdown is polyester (40%), cotton (36%), polypropylene/other olefins (7%), polyamide (6%), acrylic (4%), regenerated cellulosic fibres (4%) and wool (2%).
Main end-uses- apparel (65%), household textiles (18%) and technical textiles (17%)…….. (I. Holme)
World population and rising middle class demands more fibers and more value through finishing.
By 2009, the production of non- woven in Greater Europe reduces 6.3% to 1.6 MT.
The beauty of textile materials and finishing
The accelerated expansion in the utilization textiles materials is coming from the fascinated combination of properties offered:
Strength, softness, permeability, opacity, pliability, light weight, formability, modifiable.
All these together are not present in metals, plastic, paper, wood, concrete etc.
Textile finishing provides extensive opportunities to modify a given textile for a desired application.
Recent subjects in textile finishing
Most of the recent more advanced version of finishing development have origin in 1990’s.
Nanofinishing (why not microfinishing?)
Microencapsulation
Phase change materials
Plasma treatment
Application specific technical textiles
Composites structures
Non- aqeous or low water finishing
Biotechnology
Technical natural fibers; and biodegradble products!
Development in traditional finishing processing
Drivers in the development- II
Commercial forces are faster in introducing the development:
Waterless finishing CO2-The Yeh Group will be the first textile mill to implement the new waterless dyeing process developed by Dutch company DyeCoo Textile Systems.
Cornstarch solution in surgical garment and bullet proofing- Singapore researchers have invented a flexible, lightweight, impact-resistant composite material based on the same principles of how a cornstarch solution hardens on impact.
Leaving Silver and Gold- A composite medical dressing containing a metal oxide has been developed by two research centres in Taipei, Taiwan. According to the Medical and Pharmaceutical Industry Technology and Development Center and National Applied Research Laboratories, the metal oxide replaces the nanoparticles of silver or gold used in antimicrobial dressings.
Clay finishing
Polymers reinforced with 2-5 wt% of nanoclays may exhibit significant improvement in thermal- mechanical properties, flame retardancy, barrier properties, dimensional stability, and modified electrical conductivity.
An interesting example is seem in nylon-6 nanocomposite reinforced with 5 wt % of nanoclay resulting in 40% increase in tensile strength, 68% in tensile modulus, 60% in flexural strength, and 126% flexural modulus. The heat distortion temperature increases from 65 0C to 152 0C.
Improving the tensile properties and fire performance of polypropylene thermoplastics using functionalized nanoclays had received significant research interest, however in the form of fiber, filament or fabric, this polymer had received little or no attention. In general, the literature on flame retardant finishing of textile fabrics using nanoclays is not significant.
Montmorillonite is one type of clay minerals mainly used in producing nanoclay- based finishes.
The commercial viability of nanoclays is mainly credited to their reduced cost (around US $ 2.25- US $ 3.25 per pound), wider applicability to most synthetic polymers (PP, TPO, PET, PE, PS, polyamide), and performance enhancement produced in end- product.