Showing posts with label Murray Fabrics. Show all posts
Showing posts with label Murray Fabrics. Show all posts

Wednesday, March 19, 2014

Knit tubing

Some application require more than a standard filter. Some times there is too much "stuff" to be filtered out, and a standard filter clogs too easily. We've found that is when knit tubing can really come in handy. It excels at removing the big particles. 

How to use it?

  • Well it could be as easy as tying a piece of kit tubing over top your existing filter. When it gets clogged just remove, clean, and return. This can dramatically increase the life of your more expensive filter.
  • Run the solution through the knit tubing, think a nylon on the end of the washing machine hose. Fill it up and throw it away!
  • Need your solution to be a uniform consistency? Use knitted tubing to filter out clumps and chunks.  
Those are just a few ideas! 

Thursday, February 20, 2014

Yarn Fibers

Thank you to Murray Fabrics for Providing this Yarn Fiber Chart!

Murray Fabrics knits tubing out of a wide variety of yarns to fit each customer's individual needs. The different fibers can be used for corrosive situations whether you are dealing with chemicals, extreme temperatures, or fire safety, as well as simple filtration.

Fabric Type

Characteristics

PolypropyleneOffers good tensile strength and abrasion resistance. They perform well in organic and mineral acids, solvents and alkalies. Polypropylene is attacked by nitric and chlorosulphonic acids, sodium and potassium hydroxide at high temperatures and concentrations. 

pH range: 2-12
Temperature: up to 190° F
PolyesterOffers good resistance to most acids, oxidizing agents and organic solvents. Concentrated sulfuric and nitric acids are the exception. Polyesters are dissolved by alkalies at high concentrations.

pH range: 2-9
Temperature: up to 325° F
NylonGood tensile strength and alkali resistance but is degraded by mineral acids and oxidizing agents. This reaction is accelerated at high concentrations and temperatures.

pH range: 2-8
Temperature: up to 250° F
CottonGood abrasion resistance and mechanical strength. It is, however, subject to rot, mildew and shrinkage. 

pH range:
 3-10
Temperature: up to 225° F
AcrylicThe resistance of acrylic fibers is excellent in organic solvents, good in oxidizing agents, minerals and organic acids and fair in alkali. Will dissolve in sulfuric acid concentrations. 

pH range: 
4-5 *Subject to other variables 
Temperature: 260 to 280°F / 125 to 135°C
Nomex*Resist attack by mild acids, mild alkalies and most hydrocarbons.  Resistance to sulfur oxides above the acid dew point at temperatures above 300°F is better than polyester.  Flex resistance is excellent. 

pH range:  
2 - 12
Temperature: up to 425°F
Kevlar*
Kevlar (aramid yarn) is chemically stable under a wide variety of exposure conditions; however, certain strong acids and bases can cause degradation, particularly over long periods of time and at elevated temperatures.
pH range: 5-7 
Temperature: Max operating temp 300-500°F / 149-260°C
(Does not melt until over 800°F / 427°C)
Stock Yarns: cotton, polyester, polypropylene, nylon, acrylic
Special Order Yarns: We can provide Kevlar, Nomex, flame retardant, polyester/cotton blend.
Quantity: Tubing is sold by the pound and is measured by flat width and stretch.