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Unsaturated polyester molding and application
by：CSSSLD
2021-01-23
Pure UP casting products high hardness, transparency, easy coloring, it can produce all kinds of knife, umbrella handles, specimens, buttons, etc.
Especially polyester buttons can join all kinds of pigment, pearl powder, etc. , have very strong adornment effect;
UP can also be used to deposit crystalline stone or crystal desktop, injection molding processing transparent polyester pellet can make all kinds of colored stone, pebble present a vivid stereo feeling, bright beautiful.
The UP also typically used for transformer and coil of integral casting.
In the construction industry, using the casting principle, using UP to the adornment of metope and ground, had advantages of simple construction, good decorative, wear-resisting corrosion resistant characteristics.
In addition to the single color metope and ground, also can imitate marble and terrazzo.
hand lay-up molding production efficiency is low, the labor intensity big, backward production methods, with the development of production in the injection molding process. Spray forming in the process to maintain the room temperature low pressure, forming conditions, just using the short cut torch cut short glass fiber, at the same time will have led to the resin and fibre together into the mould surface, to achieve the required thickness. Hand lay-up and injection molding is called contact, up to now, the two forming method is still an important role in the glass fiber reinforced plastic production.
in recent years, the SMC solved in developing light-weight products, outline are flat the dent caused by plus help muscle problems, has been widely used in the automotive industry. Casting UP the first need to put the resin, the initiator, promoter and the right amount of filler mixed into a flow of material, and then poured into the mold cavity at room temperature curing, curing and mold cavity after similar products.
use contact molding process and equipment is simple, flexible methods, but the production cycle is long, slow polyester gel at room temperature, products generally demoulding takes hundreds of hours, mould revolving slowly, unstable product quality, and then further in the mechanized production methods. Of the UP resin in the application of group that flake and molding compound is an important kind of varieties. Molding compound is an intermediate material UP products, UP in the material in alkaline earth metal oxide or hydroxide under the action of thixotropic agent can quickly thickening, forming gel structure, a process known as thickening process. Resin were not crosslinked when in this state, can be dissolved in a suitable solvent, heating with good fluidity, using this feature can be the preparation of SMC and BMC.
SMC is a new technology of glass fiber reinforced plastic industry developed in the 1960 s, based on a percentage of the resin, filler, thickening agent, lubricant, inhibitor and peroxide initiator match into a paste, then impregnated glass ZhanPian, two sides and a coil made of PE film. Molding, according to the specifications into the mold, after cutting and composite molding with high pressure method. By SMC molding technology can realize automation, mechanization and continuous production, and can suppress large products.
the UP FRP is the main form of the resin and glass fiber, the performance depends on the type and quantity of the resin and glass fiber type, number, strength, handling, etc. Because UP to room temperature low pressure molding, mould is simple, easy to operate, can be made by hand is different size, different configurations and characteristics of products, thus polyester FRP molding paste production process by hand from the start.
BMC is with 12 mm below the short cut fiber and resin and initiator mixture of materials, the use of the material with a series of excellent properties, such as small shrinkage, won't produce cracks in the process of forming, injection molding products processing good surface quality, dimension stability, at the same time, the products of high mechanical strength, electrical properties. BMC injection molding, extrusion and mould pressing, or can be used low voltage method, made a series of excellent performance such as winding UP FRP products.
more excellent articles: UP the synthetic principle and process, click directly.
http://www。 csssld。 cn//html/2017/Info_1105/712。 HTML
changshu smoothly da plastic products factory website: http://www. csssld。 Cn /
more wonderful articles, immediately search: changshu da plastic products factory smoothly
hand lay-up molding production efficiency is low, the labor intensity big, backward production methods, with the development of production in the injection molding process. Spray forming in the process to maintain the room temperature low pressure, forming conditions, just using the short cut torch cut short glass fiber, at the same time will have led to the resin and fibre together into the mould surface, to achieve the required thickness. Hand lay-up and injection molding is called contact, up to now, the two forming method is still an important role in the glass fiber reinforced plastic production.
in recent years, the SMC solved in developing light-weight products, outline are flat the dent caused by plus help muscle problems, has been widely used in the automotive industry. Casting UP the first need to put the resin, the initiator, promoter and the right amount of filler mixed into a flow of material, and then poured into the mold cavity at room temperature curing, curing and mold cavity after similar products.
use contact molding process and equipment is simple, flexible methods, but the production cycle is long, slow polyester gel at room temperature, products generally demoulding takes hundreds of hours, mould revolving slowly, unstable product quality, and then further in the mechanized production methods. Of the UP resin in the application of group that flake and molding compound is an important kind of varieties. Molding compound is an intermediate material UP products, UP in the material in alkaline earth metal oxide or hydroxide under the action of thixotropic agent can quickly thickening, forming gel structure, a process known as thickening process. Resin were not crosslinked when in this state, can be dissolved in a suitable solvent, heating with good fluidity, using this feature can be the preparation of SMC and BMC.
SMC is a new technology of glass fiber reinforced plastic industry developed in the 1960 s, based on a percentage of the resin, filler, thickening agent, lubricant, inhibitor and peroxide initiator match into a paste, then impregnated glass ZhanPian, two sides and a coil made of PE film. Molding, according to the specifications into the mold, after cutting and composite molding with high pressure method. By SMC molding technology can realize automation, mechanization and continuous production, and can suppress large products.
the UP FRP is the main form of the resin and glass fiber, the performance depends on the type and quantity of the resin and glass fiber type, number, strength, handling, etc. Because UP to room temperature low pressure molding, mould is simple, easy to operate, can be made by hand is different size, different configurations and characteristics of products, thus polyester FRP molding paste production process by hand from the start.
BMC is with 12 mm below the short cut fiber and resin and initiator mixture of materials, the use of the material with a series of excellent properties, such as small shrinkage, won't produce cracks in the process of forming, injection molding products processing good surface quality, dimension stability, at the same time, the products of high mechanical strength, electrical properties. BMC injection molding, extrusion and mould pressing, or can be used low voltage method, made a series of excellent performance such as winding UP FRP products.
more excellent articles: UP the synthetic principle and process, click directly.
http://www。 csssld。 cn//html/2017/Info_1105/712。 HTML
changshu smoothly da plastic products factory website: http://www. csssld。 Cn /
more wonderful articles, immediately search: changshu da plastic products factory smoothly
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