brillchemindia-blog - Tumblr blog

brillchemindia-blog · 5 years ago

Text

Brill Chem India- Dye, Dyeing and different types of Dyes

Colors are one of the most essential parts of human life. Even one can't even imagine his/her life without colors. Different colors have different meanings and importance in our daily lives. For instance- Red is recognised as the color of love whereas white is used for peace. Moreover, even countries have flags with different colors that represent pride and honour of the countries. Color is essential for every small aspect, even while buying vegetables or any other stuff such as bike color is a prominent factor that impresses us. Color also helps us to differentiate between different things. In other words, human life nowadays is addicted to colors and this is why we are performing different experiments to invent new color combinations every day. The most common experiments are performed on fabrics to find different combinations and these experiments have made dyeing and dyes inevitable.

What is dyeing? Dyeing is basically a process of coloring fibres, yarns or fabric with different natural or synthetic dyes. The process of dyeing is practiced since ancient periods. Earlier people used different techniques such as rubbing crushed pigments or sticking plants to fabric for dyeing. Nowadays methods have become more sophisticated and real. Usually, now natural dyes from crushed fruits and other plants are used for dyeing fabrics and these have more resistance as compared to earlier used dyes. Moreover, the Dyeing process nowadays is easy as it can be performed during any step of manufacturing textile - fiber, fabric, yarn or finished products including garments. Selection of proper dye and according to material and selection of method are crucial aspects of dyeing nowadays. We have discussed enough about dyeing but another question is:- What are dyes? Dyes are different substances that help us to add color to textiles. These dyes are added to fabrics or fiber with the help of chemical reactions, absorption or dispersion. Different dyes have different resistance in front of sunlight, water, perspiration, gas and other agents. Moreover, the reaction of cleaning agents their method and solubility and method of application also has huge impact on dyes. There are different types of dyes that are used on a regular basis depending upon their characteristics and every dye is not suitable for fabric whether it is man-made or natural. Different type of dyes are- Acid dyes Acid dyes are a group of dyes used on wool, animal fibers and manufactured fibers. These dyes are mostly used on cotton or linen because of the requirement of mordant. Apart from this, it can also be used on nylon because it provides fabric resistance from water. In some cases, more resistance can be provided with the help of fixatives.

Basic dyes or cat ionic dyes Basic dyes are basically used for acrylic fibers because they are water-soluble and these are mostly used with acrylic fibers. Mordant are chemical agents which are used to color fabrics by forming insoluble compounds with the help of dye. Basic dyes are used for cotton, linen, acetate, polyester, acrylics and nylon. Basic dyes are mostly used in acrylics because they are not fast to light, washing or perspiration.

Synthetic dyes Synthetic dyes are those dyes which are usually classified on the basis of their chemical composition and the way they are applied during the dyeing process. Disperse dyes These dyes are water soluble in nature and these dyes are found in the form of a paste or powder that easily get dispersed in water. These particles have the capacity to dissolve easily in fiber and impart color on them. Earlier, cellulose acetate fibers were dyed with them but now nylon, acrylic and other fibers can be dyed with it.

Natural dyes Direct printing, the most common approach to apply a color to a fabric. One can obtain the desired pattern by pressing dye on fabric is a paste form. The thickening agent is added to a limited amount of water to form a paste and dye is dissolved in it. Earlier starch was used as a thickening agent but nowadays gums are most commonly used.

Direct dyes Direct or substantive dyes are most commonly used in cellulose fiber and these can be used without the help of mordants. These kinds of dye have less resistance to water but they are fast to light. They are usually preferred for different fabrics such as wool, silk and nylon.

Sulfur dyes Dyes which are made with the help of caustic soda and sodium sulfide are referred to as sulfur dyes, these dyes are insoluble in water and these dyes are fast to light, washing and perspiration. Cotton and linen fabrics are most commonly used fibers in sulfur dyes.

Vat dyes Vat dyes are insoluble in water and these dyes can't be used directly to dye fibers. These are firstly mixed with an alkaline solution to make it more soluble which directly allow them to attach with textile fibers. Subsequent oxidation can restore dye to again insoluble form

Reactive dyes Reactive dyes as the name says are reactive and these dyes react with fiber molecules easily. These could be either applied from an alkaline solution or neutral solutions. Sometimes heat treatment is also necessary for developing different shades. After the dyeing process the fabric is washed to remove unsettled dye.

Pigment dyes Pigments are not really dyes but they are part of colorants. They are most commonly used for coloring fabrics like cotton, wool and other fibers. These are applied to fibers with the help of different resins. After this process, the fabrics are subjected to high temperatures.

CONCLUSION So, these are some of the dye that are used on different substances to improve their appearance. Some of these are man-made while some are natural. Different dyes have different properties and this is why they are applied to different substances according to the requirement. It is very crucial to have information about the properties of dyes to affix it properly to different fabrics and surfaces. Brill chem produces these dyes and knows how to use them properly to enhance the appearance of the fabric.

0 notes

brillchemindia-blog · 5 years ago

Text

Brill Chem India- Energy Reduction in Pulp and Paper Industry

Pulp and paper industries consist of companies that use wood as raw material. This raw material is used to produce different products such as pulp, paper, board and other cellulose-based products. North American countries are leading in pulp and paper industry followed by Northern European countries and East Asian countries. Countries like Australia and Brazil also have many pulp and paper industries. Till 2009, the united state was the leader in the pulp and paper industry but after that china took over.

Pulp and paper industries consume a lot of energy. According to a research, paper and pulp industry are the fifth largest consumer of energy but as we all know that these energy sources are available for a limited time and it is very important for us to save these resources for our future generation. This is why different paper and pulp industry also build energy-saving plants. These plants are manufactured to save energy for future use. A lot of investment is required to build an energy-efficient program but these programs are for the long term and help business in the long run.

Investing in energy efficiency help an industry in many ways, these plants help to improve energy and water security. Apart from this, it also helps the industry to enhance its goodwill in the local area. There are various ways to conserve energy in the paper and pulp industry.

MOTOR MANAGEMENT PLAN

Many industries use motors to conserve energy. These motors have the capacity to store a lot of energy. Different premium quality motors are available in most of the industries. In case of a motor failure, many companies use stock motors. These stock motors also help to store a lot of energy. These motors are environment-friendly and can be used in the long run. Moreover, these motors are not that expensive as compared to other energy-saving programs.

COMPRESSED AIR

Compressed air energy storage is also another way to save energy with the help of compressed air. This compression creates heat after that air is warmer after compression. The heat generated through compression can be saved in the form of energy and can be used for further process. The efficiency of stored energy is good enough for future use.

STEAM LEAKS

The steam leak is another way of conserving energy in a pulp and paper industry. In steam leak process energy is saved for a shorter time as compared to other plants and this energy can be used in further process. During the research, it was found that facilities are small but significant for any industry. However, utility cost and maintenance rate are low. This is what makes steam leak one of the best combinations of high energy and cost-saving at low cost.

WASTE HEAT

Pulp and paper industries generate a lot of waste heat during their different processes. This heat is released into the atmosphere. In this system that waste heat is collected at one point and this heat is converted into energy. This energy after all this is used for different purposes in future use. This is also one of the best ways to conserve energy and use it in future.

LIGHTING

Another way to save energy in a pulp and paper industry is by using the process of lighting. The lighting process is the easiest way to save energy as light energy is used for further process. It is also one of the cost-efficient processes as compared to other projects. Lamps and ballasts are also used in this process.

CONCLUSION

So, these were some of the energy-saving programs that are used in paper and pulp industries across the world. These programs are a cost-efficient and a good option for any industry in the long run. Apart from this, it is also important to save energy for our future generation and these programs provide a good social status for an industry.

0 notes