Ponds need Pond Liners like a building needs a foundation. Among all the materials used for Pond Liners, plastic is the most versatile. It comes in two forms- pre-formed and flexible.
Preformed or rigid plastic liners are strong and long-lasting. They are made of polythene and other recycled plastic material. They do not develop leaks. They are more cost-effective than concrete. An average gardener can set up a small pond within one day using this liner.
Some of these models are fitted above the ground and some below the ground. Rocks and stones may be placed around it to give a natural look. The liners may be both UV- as well as frost-resistant. But they may be difficult to fit because of their different shapes and sizes.
Among the preformed models, the plastic liners may be cheaper than fiberglass, but do not offer support for free-standing use of the pond in a raised water garden. It is difficult to build around a plastic pond and support it evenly. When support is not uniform there is a danger that the plastic liner will crack.
Flexible Pond Liners are also available, like PVC (Poly Vinyl Chloride) and HDPE (High Density Poly Ethylene).These liners are not as flexible as rubber. Plastic liners are often used on large holding ponds when economy is a bigger concern than flexibility.
Large ponds require a Pond Liner that is safe for fish and aquatic plant life, inexpensive, easy to install and durable. Polyethylene fits the bill. Medium-density Polyethylene contains up to 5 percent carbon black, which makes it highly UV stable and suited to outdoor life. Twenty and 30 mm polyethylene can be custom-made according to your specifications.
PVC, or Polyvinyl Chloride, has excellent chemical compatibility and puncture resistance, lending itself to membrane liner applications. Some PVC liners contain UV stabilizers which protect them from breaking down when exposed to sunlight. PVC is not a crystalline membrane liner material, so it can elongate in all directions. It is the most cost-effective buried membrane and it has the longest successful use of liner material.
Another plastic is Polypropylene. It has special properties, like outstanding dimension stability, low coefficient of expansion and contraction, wide temperature seaming range, good chemical resistance and no stress cracking.
Plastic has its plusses and minuses, and the choice depends on the individual's requirements.
Teflon is the trade name for PTFE (polytetrafluoroethylene), a polymer consisting of carbon and fluorine. Teflon was developed back in 1938 by a DuPont researcher named Dr. Roy Plunkett. The development changed the plastic industry forever.
Plunkett and his DuPont team created one of the most slippery substances that exist. PTFE is not only beneficial for its nonstick property; it offers many other great qualities as well. The polymer is resistant to high temperatures, chemical reaction, corrosion, and stress cracking. These traits allow PTFE to be used for many different purposes.
One common household use for Teflon or PTFE is cooking. Many kitchen supply brands market their Teflon pots, pans, and utensils. These products are safe and make cooking a lot easier. The non stick PTFE component guarantees your food will slide right off the pot or pans surface. Cooking sprays and grease are no longer needed when you cook and bake with a Teflon coded product.
Another at home use for PTFE is with beauty products. Nail Polish is commonly infused with Teflon to create a strong, crack free product. Once applied, the Nail polish will stick to your nails longer with chipping. Many hair styling products, like curling irons and flat irons are also made with PTFE. The non stick coating helps the tools glide smoothly through hair, unaffected by the high heat temperatures.
PTFE is also significant in the automotive industry. One frequent use is with windshield wiper blades. Manufacturers coat their wiper blades with Teflon so the well known "squeaky blade situation" does not occur.
A fourth public use of PTFE is as protection for carpets and fabrics. Carpets and fabrics that include Teflon are less susceptible to stains. The PTFE acts as a repellant to liquids so spills can be easily wiped off.
Besides household and personal use, PTFE is widely used in a variety of business industries. The Steel and Chemical Processing Industries are two prime examples. These industries need strong and reliable hoses and tubing to transfer highly caustic and corrosive chemicals. They work with high temperatures to produce their products or services and they have to have a means for withstanding the heat. Teflon is great since it is carries the heat resistant and corrosion or stress free characteristics. PTFE tubing and hoses deteriorates less rapidly than metal piping. Manufacturers are catching on to this cost saving technique.
As you can see, PTFE properties are endless. They assist us with day to day tasks like cooking, cleaning, and driving. They contribute to our beauty prepping. And, PTFE's play a major role in the processes of industries like the Steel and the Chemical Processing Industry. Plunkett and DuPont might not have realized just how far their development would go. They created a product that remains essential to many functions in society today.