Monday, July 21, 2014

Be cautious when choosing paint for your home

When remodeling a house, there are hundreds of things to keep in mind like; interiors, flooring, the final layout and lastly; the house paint.

However, when it comes to painting your home, there are many things to be considered like; color, texture, attractive designing patterns etc. In addition to this, emphasis is also to be laid on the details of paint rather than simply concentrating on colors and textures.

Sometimes, manufacturers add harsh and cheap chemical reactive diluents to their paint, which can be harmful for those people residing in the house. The polluting gases present in such paints, lead to several health problems such as; frequent headaches, breathing disorders, irritation in the eyes and more. Unfortunately, Harmful VOC components are introduced in the paint during production, by many paint manufacturers, in order to make bigger profits.

Therefore, it is of the utmost importance for the house owner, to be cautious when buying paint, and look at the details of the paint, printed on the can.

Before you make a choice, it is important to enquire about the paint constituents and about the paint companies.
Make a list of the top renowned paint companies, which only deliver quality paints to their customers.

Choosing organic paints is definitely a safer option. Not only you would get a colorful wall, but also get a healthy surrounding, as there would be no risk of health hazards.

Therefore, it is very important to do a thorough research before buying house paint. After all, it is yours and your family’s health that’s important.

Choose paint that is safe, as well as cost effective, if you do not want to end up spending too much money on paint.

Friday, July 4, 2014

Some common types of plastic coloring agents

There is a large variety of plastics available in the market. Different materials are used for making different types of plastic. This difference requires the use of different dyes for coloring.

If a plastic product is made out of nylon (a regular material that is commonly used for making Frisbee discs), it can be dyed by adding water to the acid Dye. The plastic is then heated in that water. Mild acid like vinegar is added to the water to achieve the required pH value. Nylon works well with acid dyes, whether it is in the form of woven textile fiber or plastic form.

The dye bath should be kept at 185 degrees Fahrenheit. If the temperature is higher, it may distort the shape of the nylon product, and may damage the fabric. But, at the same time low temperature is not going to work well either, because it will not allow the dye to bond perfectly with the fiber. 

Another common material used for making plastic products is polyurethane, which can be dyed using acid plastic dyes. This material can easily be damaged if the temperature is set high. Polyester is a material that cannot be colored using any of the dyes that have been mentioned above. This material can only be colored using colorants from the category of Disperse dyes.

Acid dyes do not blend well with polyester. The process used for disperse dyes demands higher temperatures, preferably above a hundred degree centigrade. If the temperature is set below this, it may result in a disappointing output. This material is a preferred choice when it comes to coloring synthetic materials like acetate and acrylics.

This material cannot be used for dyeing acrylics, which is the safest choice of material for regular usage. Acrylics can also be colored by using basic or cationic ones. When using the basic ones it is essential to have a safe laboratory. When using it at home, we must be very careful as it may stain everything that it comes in contact with, real bad.

You simply cannot color some plastics at home. Some of them have to be dyed only when they are in the liquid form. For instance, polypropylene that is marked with recycle log 5 is used for making water bottles, sports clothing, stain-resistant carpets, and upholstery materials, etc.
This material requires special material for coloring, because it repels water molecules.

Wednesday, June 18, 2014

How to develop a high-solids polyurethane system?

Using reactive diluents along with polymer matrix helps diminish VOCs (volatile organic compounds) and a high-solids polyurethane system can be developed.

Diluents are preferred because their quality results in higher solids and lower viscosity, which goes well for error-free applications of higher-solids coatings.

Description of diluents
Diluents are primarily used for reducing the viscosity of conventional epoxy resins. They are also generally used, in commercial grade purposes.

Properties of diluents

  • Viscosity Hopper 6 - 8 mPa.s. (megapascals into bars) @ 25 C
  • Light yellow or clear liquid in appearance
  • Epoxy Value 5.9 - 6.3 eq. / Kg
  • Refractive Index 1.528 - 1.330 @ 25 C
  • Storage Stability for up to 12 months in original container
Advantages of diluents
  • The Viscosity of high molecular weight epoxy resins can easily be reduced.
  • Using diluents, substrate, and filler wetting of adhesive formulations can be improved.
  • The retention of mechanical and chemical resistance cured state properties is possible, by making use of this substance.
  • There is lower vapor pressure in diluents, in comparison to other chemicals.
Applications of diluents
  • Diluents are used in both solvents free and solvent containing chemicals.
  • For the casting and potting of electrical and electronic components.
  • It is best used for laminating glass fiber.
  • Adhesive in nature.
  • Used in flooring.
  • Potting & encapsulation
  • Tooling
Diluents when combined with resins, give the following advantages:
  • Without increasing volatiles, viscosity reduction can be done.
  • Cost reduction because of higher filler loadings of both chemicals. 
  • Higher compressive strength, lower co-efficient of expansion; lower exothermic and lower shrinkage are a few of the many other advantages of higher filler loadings.
  • Increased pot life of resin hardener.
Once you learn about diluents and its properties, you will surely have a more clear understanding about it.
If you are involved in the type of industry, which deals in supplying Polyurethane Solutions for Systems, then you definitely need this chemical for effective results.

If you are still unaware about the many ways in which this chemical can be helpful for your industry, then you need to do a more extended research. Doing so, will help you get a better idea about its properties.
In order to get the best quality product, you must compare the price and quality of the product; before buying it.

Friday, April 11, 2014

Take a look at the extensive usage of solvent dyes

Dyes that are soluble in organic solvents are known as solvent dyes. They are mostly used as solutions in organic solvents. These dyes are used for coloring solvents, waxes, hydrocarbon fuels, lubricants, plastic items, and hydrocarbon based materials. The molecules in fuel dyes are mostly slightly polar or non-polar and don’t undergo the ionization process. Its molecules are not soluble in water.

The fact that these dyes are soluble in non-polar materials makes them quite versatile for its usage. Oil dyes are used for applications like foil printing, marking pens, printing inks, candles, waxes, polishes, wood stains, varnishes, shellacs, leathers, ball point pens, acrylic resins, etc.

Chemical activities of these coloring agents are important because they can easily dissolve in non-polar chemicals such as fuels, and oils. 
They are also used in pyrotechnics industry as well as signaling smoke. Another common utility is that of coloring lubricants, in cutting and automotive industries. The most common application of solvent dyes is in the plastic industry, which relies heavily on this coloring agent.

In this arena, manufacturers make use of solvent based dyes for coloring a plethora of solid products such as nylon, acrylics, polyester, polystyrene, styrene monomers, PVC, acetates, etc. In addition to that, several solvent based dyes contribute to biological stain manufacturing community for making stains that identify cells structure in scientific research and medical diagnostics.

Furthermore, they also contribute in giving certain products a transparent metallic effect. A good example would be gold imitation that we generally see in metalized polyester film. Other than that, glass coloration is another area where these dyes give their contribution. While other coloring agents easily ionize, these dyes don’t. Ionization is the ability of a compound to change polarity through losing or gaining electrons from other compounds. That is the reason they are not soluble in water which is highly polar.

The naming convention for these coloring agents uses color index followed by classification system. The system is the name of the solvent, followed by color, and number. Different types are given different names.

A few of the most popular ones are: Red 24, Yellow 124, Blue 35, Red 164, etc. The naming convention is strictly based on the color. It is not based on the chemicals used in different compounds.

Anthraquinone is the name that has been given to, blue and green dyes.

Monday, April 7, 2014

Know more about Epoxy resins and their usage!

There is a variety of color compounds used by plastic manufacturing industries for making colored plastic objects. Besides manufacturing colored plastic goods, do you know how to color an epoxy resin? Here is a piece of information that will make you familiar with the procedure of coloring epoxy resin.
  • Mix epoxy resin in the quantity specified by the manufacturer- One should wear gloves and work in a ventilated area as the mixing process release fumes, which are harmful for the body.
  • Dip a toothpick in the mixture and place the coated toothpick into the mixture. Typically, you will need some more drops of color concentrate to get the color of your choice.
Mentioned below are some of the factors that you need to consider while using epoxy resins:
  • When using epoxy resin, make sure that area you are gluing is clean and dry.
  • Always mix epoxy resin in specified quantities.
  • Make use of a large wooden spoon to mix hardener and powder together.
You need to act quickly to use epoxy resin as when it becomes gel, it is of no use. Then, you need to mix hardener and powder again.

Wednesday, March 26, 2014

The value of color concentrates in plastic manufacturing industries

Colors are an integral part of our lives. Colors are used for conveying messages and giving warning like in the case of traffic signals and many other rules. This is why the Plastic manufacturing companies make use of colors, in order to make their products different and attractive.

Do you know what a color concentrate is? It is a plastic compound that contains a high color percentage, and is then mixed in an appropriate ratio with resin, to create the required color. Several additives are also added to color concentrates, in order to add those special effects.

The Plastic manufacturing industries use such concentrates for different reasons. That is why, it is very important to choose the right concentrate, as to avoid serious issues in the future. Selecting the right color is also important in grabbing the customer’s attention. It is very important to consider the customer’s psychology, to bear competition in the market.

When buying color concentrates, there are many options to choose from. For example; when you buy a car, you look for all the different options available in terms of colors and shades. Suppose that all cars were the same color; then the roads would be boring, filled with vehicles of the same color.

The same principle applies in the case of the plastic industry. If these industries started manufacturing goods of the same color only, then no one will purchase what they have to offer.

That is why the plastic manufacturing industries need to manufacture in a large variety of colors; in order to make their products different and even unique.

The better the quality of the coloring agents is, the greater the chances for the products of becoming a success in the market. A variety of coloring agents have made it easy for businesses to target different audiences, based on their preference for different colors. The success rate of getting a required color depends on the quality of concentrates used, and on the ratio in which they are mixed.

There are different types of coloring agents available in the market. Each agent has its own properties, advantages, and disadvantages. It is possible that a certain concentrate may not be appropriate for coloring a particular type of plastic, in such case; you need to have the adequate knowledge about the different coloring agents and which is the best option; in order to provide appealing colors for the plastic goods manufactured by your business.

The wrong selection of a coloring agent will give rise to several problems like; color swirling and contamination. Therefore, one should have thorough knowledge about the unique characteristics of these concentrates, to avoid future problems.

Tuesday, January 14, 2014

Let’s learn about the colorants used in the textile industry

Dyes are the coloring agents or chemicals that are used to give different color shades to a fabric. The color of a fabric is what makes it more appealing and different from all others.

To color a fabric, the coloring agents are mixed in an aqueous solution. To improve the color fastness of the fiber, dyers add mordant to this solution. In other words, the addition of mordant helps to increase the strength of the coloring agent, which adheres to the fabric.

Once the solution is prepared, the fabric is dipped in it, in order to bring attractive color shades. When a fabric is dipped into the mordant mixed aqueous solution, the colorant adheres to the fabric.

In the next section, we will take a quick look at the different types of coloring agents, which are most commonly used in the fabric industry.

     Vat Colorants:
Vat dye comes in the category of dyes in which colors are obtained through oxidations. They give bright and strong color shades to the fabric after dying. These dyes are used to color different types of fabrics such as; cotton, wool etc. Colors through vat dyes are obtained by dipping the fabric into the aqueous solution.

     Mordant colorants:

The dyes that come under this category require a mordant to produce the desired color shade. The unique feature of such colorants is that it attaches to the fabric strongly, to produce color fastness properties. In other words, the fabric that is dyed using mordant colorants keeps its color even after several washes. Most common types of mordant dyes include: tannic acid, chrome alum, sodium chloride, alum etc.
 
     Acid colorants:
These types of coloring agents are soluble in water. When used for coloring, the chemical bonding between the colorant and the textile is obtained through the formation of acidic salts. These dyes are widely used in the textile and medical industry.

     Base colorants:
Base colorants are used to color fabrics of various types such as silk, wool, acrylic etc. Base dyes are also used to color paper.

     Sulfur colorants:
These coloring agents are mainly used to color cotton fabrics and produce dark shades. The Dyeing process of dyeing through sulfur dyes generally is done in two steps:

In the first step; the fabric is turned to pale yellow and in the second step; the dark color of the fabric is obtained by adding a sulfur compound.