Professional Polymer Technology
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Polyurethane refers to any polymer that is made up of r […]
Polyurethane refers to any polymer that is made up of repeating chains of organic units joined by urethane links. They form as a result of complex chemical reactions which take a variety of forms. Some of these resulting polymers are made into polyurethane adhesives. These can often be extremely strong, and have become increasingly applicable for household and industrial use.
Polyurethane adhesives can be used to bond together a wide range of materials, including wood, metal, concrete, glass, and plastic. Whether the material is porous or non-porous is of little importance, unlike with most other adhesives. Polyurethane adhesives are used especially often as woodworking glues. They have the advantage of being very water-resistant, much more so than other glues used with wood. The United States has only seen these types of adhesives on the market since the 1990s, but they have been widely available in Europe for much longer.
Polyurethane adhesive is a type of glue used in book binding and woodworking. Polyurethane is a class of polymers that are created from a chain of organic units, joined together with urethane links. There are a wide range of polyurethane adhesive products available. Different chemical combinations result in different properties. The chemical composition can be alerted to produce different levels of stiffness, density and hardness.
The major advantage of a polyurethane adhesive is that it is water resistant. This property makes it the glue of choice for book binders and book repair firms. The glue has a very low viscosity level, cures within seconds and has a pliable state in room temperature conditions. When used in terms of adhesives, the cure time is the length of time required before the adhesive has bonded the two items together.
As an adhesive, polyurethane was first developed in 1985. The first version had very specific properties. The adhesive was made available in 1988 and had a high viscosity, low starting solidity level, but had a three day wait period before it would cure.