What is Stabilizer? | Working Process of Stabilizer in Textile Wet Processing

-

Stabilizer
Stabilizer makes complex compound with catalyst but not react and stop the oxygen generation into solution and preserved the strength loss of hydrogen peroxide. High PH and temperature lead to the decomposition of peroxide bleaching liquor and degradation of cellulose.

The role of the stabilizer is simply to control or regulate these effects the act as buffers, sequestrates and in special cases, enhancing performance of the surfactant used in the bleach bath. The sequestering and inactivates metallic impurities which causes catalytic decomposition of hydrogen peroxide or precipitation of hydroxides or carbonates. These impurities the most common being calcium and iron are brought into the bleaching system by the fabric water supply or the other chemical used.

The most common stabilizing agent have been used are Sodium Silicate. The stabilize were the sodium polysilicate (effective at lower), The sodium metasilicate (washed out readily) than the polysilicate also used sodium orthosilicate and potassium silicate.

Substrates bleached with a silicate stabilizer must be washed off in soft neutral boiling water in order to prevent problem caused by insoluble silicates or silic acid. Although sodium silicate is both effective and economical, the problems associated with silicate deposits on fabric and machinery have made alternative
non-silicate or organic stabilizers.

Advantages of Sodium Silicate:
1. Good degree of whiteness.
2. Better bleaching of veg. matter and removal of husks.
3.  Masking of heavy metal ions.

Disadvantages of Sodium Silicate:
1. Sensitive to water hardness.
2. Handle impairment.
3. Reduction in absorbency.
4. Blocking of pipes.

In order to avoid these disadvantages organic stabilizers together with magnesium salt 0.2g/litre.What is Stabilizer? | Working Process of Stabilizer in Textile Wet Processing

Comments

Post a Comment

Popular posts from this blog

Green factory

-
Introduction: Bangladesh export industries for apparel and textiles have completed its four decade. During this time there were different phases of challenges and prosperity. In the 1 st  decade the challenge was the technical know-how. Some of the big enterprises of that time played a leading role e.g. Reaz garments, Desh Garments, Paris Garments, etc. Of them Desh garments together with Korean company Hyundai trained many of its staffs in Korea for technical training. From those trained staffs our industry got many new entrepreneurs who later become leading industrialist of this time. At the middle of its 2 nd  phase the government took various steps in order to set up backward and forward linkages for the industry. This brought many new spinning mills, weaving mills, and most importantly knitted composite factories were grew up in the country like mushrooms. During the end of 2 nd  decade and start of the 3 rd  decade Bangladesh garment industry faced the first global challen
Read more

Hydro Extractor | Advantages of Hydro Extractor in Textile Finishing Process

-
Hydro Extractor | Advantages of Hydro Extractor in Textile Finishing Process Hydro Extractor: Hydro-Extractors are also called Centrifuges. Centrifuges are used for water extraction (dewatering, pre-drying) of textile materials. Values of approx. 15% for residual moisture content can be achieved depending on the type of textile fiber. Centrifuges with perforated drums or baskets (Ø up to approx. 2000 mm) which oscillate vertically in ball-and-socket joints suspended on three points are produced in various designs as pendulating, suspension, cage and vertical centrifuges, also with so called gliding support bearings as gliding support centrifuges or in horizontal resp. vertical arrangements as open-width, horizontal and warp-beam centrifuges, etc. Most centrifuges have electric drives for speeds of approx. 750–1200 rpm and are generally provided with automatic control over various ranges. For safety reasons, an interlocking lid is essential on a centrifuge so that the motor cannot b
Read more

What is Production Planning in Garments industry?

-
Production planning is the very important department in garments industry. Production planning is the controlling aspect of garments industry. It is involves everything & every task in the process to execution the delivery of goods within time frame. So, production planning is the controlling of production & manufacturing process determined by time frame. Planning department plan every style to execution the order within time limit. Without time frame garment cannot sustain so garment industry must follow every task by scheduling. Each order has a delivery date & production plan department follow production plan on the base of delivery date. They know when fabric & trims in-house in factory will. Basically some of fabric & trims come from Local & internationally .So, they plan both option on the base of delivery date. A buyer can judgment by shipment percentage & where the vendor current position? So production planning department must follow some of the
Read more