The FRP industry has grown very rapidly over the last fifty years and is an important part of the composites industry. Seventy percent of the production of glass fiber is used to make FRP. FRP is light and hard, non-conductive, stable, mechanically strong and corrosion resistant. It is used in jet airplanes for fuel tanks and pipes, which can reduce the weight of the airplane. Astronauts on the moon, they are carrying a miniature oxygen tank, also made of fiberglass. Fiberglass reinforced plastic is easy to process, not rust, not rotten, do not need paint. Our country has been widely used in the manufacture of glass fiber reinforced plastic a variety of small motorboats, lifeboats, yachts, as well as automobile manufacturing, etc., saving a lot of steel.
Chemical plants also use synthetic resin materials made of FRP instead of stainless steel to do a variety of corrosion-resistant equipment, thus greatly extending the life of the equipment. Fiberglass is non-magnetic, does not block the passage of electromagnetic waves, with which to do the missile radome, as if the missile put on a pair of protective glasses, not only does not block the radar "line of sight", but also play a protective role.
Into the 21st century, according to the good wave-transparent fiberglass, this aspect of the performance, with the widespread popularity of cell phone communication, fiberglass is widely used in the manufacture of 2G and 3G antenna cover, fiberglass with its good formability, the appearance of the beautification can be played a very good role in beautifying the community, the products in this area are square column line cover, simulation of the stone, field application of the beautification of the tree and so on. In addition, fiberglass reinforced plastic also for the improvement of the level of sports has made a contribution. After the emergence of the new fiberglass reinforced plastic pole, because it is light and rich in elasticity, the record skyrocketed, and now the pole vault record has exceeded the 6-meter mark.
Today, fiberglass reinforced plastic is also used in a large number of people's lives, people affectionately called it “fiberglass”, because of some of its special varieties can still retain many of the advantages of glass, such as transparency, so people use it as windows and doors, not only to block the ultraviolet rays of the sun, but also to make the room bright. People also use it to make a variety of durable daily necessities, such as bath, kitchen utensils, washing utensils.
First, the selection of materials
The raw materials used for FRP are resin, glass fiber, and other supporting auxiliary materials configured in the right proportion, high-quality FRP is made of high-quality resin, low-viscosity, low-exothermic, low shrinkage, high-speed curing, high-speed compatibility and glossy bright.
Two，Comparison of finished products
The appearance of high-quality FRP products without obvious cracks, pores are also less, the color is bright and pure, good transparency, good toughness, strength, good surface finish, long service life; while the appearance of poor-quality FRP products have cracks, more pores, the color is not pure gloss is not enough. Its service life is also shorter.
Third, durability: time is the fairest referee!
Fiberglass reinforced plastic in the actual use of the process will also reveal his real strength, high-quality fiberglass reinforced plastic after a few years of use, the color is slightly darker, the whole remains intact, no obvious damage, poor-quality fiberglass reinforced plastic can not withstand the test of time, the use of a few years there will be corrosion, fracture, porosity, and other obvious damage, the shape of the shape is also less flat, the color of the degradation of the seriousness of the overall aging, in general, the high-quality fiberglass reinforced plastic is to be used for twenty years, the use of time is the most fair referee. Fiberglass reinforced plastic is to be used for twenty years, but after two years of poor quality fiberglass reinforced plastic will appear the phenomenon of overall aging, thus bringing great losses to customers. So here to remind the majority of customers, do not be greedy for cheap choice of low-quality FRP products and small losses, the loss is not worth it!
Identify the quality of FRP and the following methods:
1、Tolerance of external dimensions (inner size of the lattice, outer size)
2, appearance (undue defects: bare fiber, whitening, pit, fracture, uneven fiber, etc.)
3、Bacol hardness
4、Concentrated load and uniform load
5、Resin content
6, the most simple and easy way to identify the quality of glass fiber reinforced plastic: put the glass fiber reinforced plastic straight on the cement or tile floor, will hear the crisp steel sound, is qualified glass fiber reinforced plastic.
Translated with DeepL.com (free version)
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