Buildings and construction industry

Applications Rapid industrial polymer identification systems have been developed to sort plastic components in cars, plastics used in the building and construction industry and plastic films. In recycling of plastics... 

The single use of vinyl chloride is in the manufacture of poly(vinyl chloride) plastic, which finds diverse applications in the building and construction industry as well as in the electrical, apparel, and packaging industries. Poly(vinyl chloride) does degrade relatively fast for a polymer, but various heat, ozone, and ultraviolet stabilizers make it a useful polymer. A wide variety of desirable properties can be obtained by using various... 

Poly(vinyl chloride), also known as PVC, is prepared by radical polymerization to produce material composed of an average of 10,000 to 24,000 monomer units. It is atactic and therefore amorphous, but it has a relatively high Tg because of the large size of its molecules and its polar carbon-chlorine bonds. It is a rigid material and is used to make pipe, panels, and molded objects. About 68% of PVC is used in the building and construction industry. A more flexible form of PVC is produced by adding a plasticizer such as dioctyl phthalate. This is used to prepare electric wire coatings, film, and simulated leather or vinyl. ... 

Epoxy-polysulfide Epoxy-polysulfide adhesives and sealants have a very high degree of elongation but poor tensile strength compared to unmodified epoxies. They are used primarily as sealants or coatings in die building and construction industries. 

Figures 11.3 and 11.4 show the tensile shear strength development at 23 and -18°C, respectively, of mercaptan cured epoxy formulations relative to accelerated amine and ami-doamine curing systems. The practical cure times at -18°C illustrate why mercaptan cured epoxy adhesive systems are popular in the building and construction industries where the adhesive can be applied at cold, outdoor temperatures.

Waterborne epoxy coatings and adhesives have established the building and construction industry as their largest market. Commercial systems have been available for many years. The following characteristics propel their use over conventional alternatives ... 

Typical applications in the building and construction industry that benefit from these characteristics include... 

The good low-temperature properties of epoxy-polysulfide adhesives are one reason why they have found significant use in the building and construction industry. Another reason is their excellent flexibility and ability to absorb stress and move with the thermal expansion and contraction of the substrates. However, in these applications the adhesive is generally not formulated for high tensile shear strength but rather for optimum elongation. 

Electroplating processes are widely used in many branches of industry, the most important of which are the automobile industries, building and construction industries and electrical and electronics industries. These processes are often used for decorative purposes. 

The commodity thermosets of urea, melamine, and phenolics account for about one-third of building and construction industries resin consumption. Most of this is used for resin-bonded woods such as plywood, particle board, and oriented strand board. High-density polyethylene (HDPE), used primarily for rigid piping, accounts for about 5% of consumption. Other significant resins, accounting for 3-5% of total consumption, include other polyethylenes, unsaturated polyester, and polystyrene. 

The building and construction industry is the main user of coating powders, for both exterior and interior use. Coating powders have proved popular for coloring light metal facades, panels, and profiles on account of their outstanding weather resistance and robust surface. They also allow architects complete freedom of expression and use. New systems with extrem weatherability are introduced to the market. 

The term acrylonitrile-butadiene-styrene copolymer (ABS) is used very broadly to define an important class of thermoplastic materials of which there are many different grades. These materials are used extensively in electrical a pliances, in the building and construction industries and in automotive componoits. Certain grades of ABS also find use as toughening agents in blends with other polymers, for example polycarbonates and polyamides (see Sections 19.8 and 19.9.3). 

The building and construction industry commonly uses polyolefin microcomposite and nanocomposite as reinforcement materials to enhance the physical properties (tensile strength, modulus, and damping) of POCs. There are many current and future applications of POCs in constmction including walling, roofing, outdoor furniture, and timber. These composites can be molded into sheets, frames, pellets, structural shapes, and others [77]. 

Gluconic add 100 000 2.80 Food, textile, building, and construction industry... 

Epoxy-based systems are the most widely used structural adhesives. They are encountered everywhere in car manufacture, aircraft, building and construction industries, metal fabrication and the home. They are available as single-part and two-part. 

Apart from the UK and Ireland, activity in the building and construction industry has been rather slow for several years in Western Emope, especially in Germany, Scandinavia and France, although Southern European countries have fared rather better and Eastern Europe is expected to do well for most of this decade. 

---