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Posts Tagged ‘Chemicals’

Types of Insulation For Wire and Cable

Sunday, April 18th, 2010

There are many types of wire and cable insulations. Some wire is meant for indoor use, some for outdoor use and even some meant for underground

PVC insulation is the most basic which you’ll find on cheaper indoor wire and cable. Hook up wire has PVC insulation and it’s mostly meant for appliances and other indoor applications. PVC can’t go outdoors or in conduit because it doesn’t have protection against any type of moisture or weather.

Electrical wire has PVC insulation with a nylon coating over it. The nylon repels rain and moisture so that it can’t hit the insulation or the bare copper. So THHN wire can go outdoors and in conduit, but it can’t go directly underground. Romex is a cable that’s made from THHN wires but it still can’t go outdoors or in conduit because of the ground wire in it. There’s a bare copper ground wire without insulation in the cable, but the PVC jacket isn’t strong enough outdoors to protect the ground wire.

If you need an electrical wire outdoors that can do anything then UFB cable is what you’re looking for. It has a tough jacket to protect against anything that could happen outdoors. It’s also known as an underground cable because it’s suited for direct burial in the ground without conduit or tray. UFB cable is made similar to Romex wire because it still has the THHN wires and a ground wire.

Those were mostly the insulation types in the electrical wire field. I’ll get into the portable cord field in a different article. That has to do with the rubber insulation types for power cable and SO cable. Most of them can handle the outdoors so there are other variations that need to be accounted for. Just remember that if you’re paying for it then make sure you need it all.

Textiles and Fabrics Art – A Riot of Creativity!

Wednesday, January 6th, 2010

Textiles & Fabrics Art is one of the oldest forms of art known to humanity. It employs plants, animals, or synthetic fibers, to create functional and decorative objects. It has also led to the early form of international trade between several countries. For example, Silk Road between India, Africa, Europe, and China; trade of Tyrian Purple Dye in Mediterranean; and International Textile Technology exchange led to industrial revolution in Europe.

Before moving any further, let us try to understand how a Textiles and Fabrics Art is made:

• A Textiles and Fabrics Artwork starts out with Spinning and Plying Fibers to make Yarn.

• The Yarn is then Knotted, Whorled, and Woven to make a pliable fabric.

• This fabric can be used to make clothing and other soft furnishings. All these items put together is known as Textile. Textiles and Fabrics Artworks are usually employed to make clothing. They are also used to send societal signals, to decorate houses & surfaces, and to store & protect belongings.

• The Textile is now decorated using Dyes & Printing to add Color & Pattern, Embroidery & Needlework, Tablet Weaving, and Lace-Making. Other construction methods used are Sewing, Knitting, Crochet, and Tailoring.

• Several tools and techniques such as, Looms, Sewing Needles, and Pleating are also employed in making a Textiles and Fabrics Art.

Once the Textiles & Fabrics Art is ready then, preserving and restoring it require attention. Both, restoration and preserving of an art are different from each other. In restoration, the artwork is brought back to some previous state, which is believed to be original. Conservation is concerned with preserving an art form, maintaining it so that it looks unspoiled, despite its age.

Textiles & Fabrics Art is prone to several types of blemishing ills, most of them caused by environmental effects, harsh chemicals, variations in temperature & humidity, and wear & tear. To preserve your artwork, try protecting it from the damaging exposures. The process of conservation includes the Examination, Documentation, Treatment, and Prevention of Artwork by taking appropriate care. All this is supported by research and education. In addition, the damaged Textiles and Fabrics Artworks should immediately be repaired.