Thermosetting plastic polyurethane elastomer material collectively known as TPU, also known as PU thermal plastics, is a linear block polymer composed of oligomer polyether polyether polyol soft segment and diisocyanate-chain extender hard segment.

Many of its properties depend on the type of long-chain diols, its compressive strength is regulated by the occupancy of hard segments, its senescence can be improved by the placement of light stabilizers, and it depends on whether the acrylic resin is aromatic or aliphicyclic.

Aromatic acrylic resins are used for sites that do not oxidize and fade under UV light. Polyurethane industrial coatings prepared with aromatic acrylic emulsion are easily oxidized and therefore fade more easily in direct sunlight.

There are even alicyclic acrylics suitable for the production and processing of light stabilized industrial coatings. This is used in places that must be UV - or sun-stable, such as car varnish and many water-soluble recipes.

Aliphatic acrylate emulsion makes polyurethane industrial coatings possess extraordinary solvent resistance and excellent aging resistance. Since there are no phenyl groups, the application of aliphicyclic acrylic resins ensures long-term adhesion in harsh situations.

In contrast to the acyclic chemicals, the chemicals of these two products cause poor aging resistance (yellowing) and poor solvent resistance (especially poor corrosion resistance). So aromatic polybutyl acrylate grease is important used in the house (floor industrial coatings, storage tank industrial coatings, etc.) or for paint. Even the top paint, in the car area is also used more and more low, because the yellowing of the paint will hurt the color of the paint, and cause the solid layer to get rid of.

Polyester type soft plastic thermosetting polyurethane and wet soil stratification long-term contact, will be eroded by microorganisms, and polyether type soft plastic or hard thermosetting polyurethane and polyether type thermosetting polyurethane or hard thermosetting polyurethane is usually not easy to be eroded by bacteria。