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Polyether ether ketone
by：CSSSLD
2021-01-23
Thermosetting resin at some stage of their manufacturing or injection molding processing factory processing is often fusible soluble in liquid or solid, by heating, catalytic chemical changes or other methods and got behind insoluble don't melt three dimensional network structure of the resin, the main varieties are phenolic resin, unsaturated polyester, epoxy resin, urea formaldehyde resin, melamine
Formaldehyde resin, etc.
Packing is added in the thermosetting resins and various additives can be obtained thermosetting plastic, with large rigidity and hardness, good dimensional stability, heat resistant, fire resistant, low price, has a certain position in the plastic material.
PEEK has excellent heat resistance, melting point 334 ℃, the long-term use of temperature above 240 ℃, the glass fiber reinforced varieties can be as high as 300 ℃. Mechanical strength higher than that of general plastic, creep, fatigue resistance, wear resistance; Excellent electrical insulation properties, in the high frequency electric field can keep low dielectric constant and dielectric loss. In addition to the concentrated sulfuric acid, can almost any chemicals, of all the engineering plastics, has the best hot water and steam resistance, can be used in 200 ℃ steam medium to long term, in 300 ℃ high pressure steam and medium-term use; Excellent flame retardancy, general situation is very difficult to burn, good radiation resistance, the y rays, resist ability is one of the best in polymer materials.
characteristics of thermotropic liquid crystal polymer is above the melting point has a very low melt viscosity, easy processing, injection molding processing, such as extrusion molding processing can be performed, the products have been used for aerospace and electronic electrical industry and other fields. Thermotropic liquid crystal polymer, but also with a variety of plastic materials, polymer blends in the blending material of liquid crystal polymer fiber reinforced role, greatly improving the blending material strength, stiffness and heat resistance.
PEEK into linear thermoplastic plastics, can the conventional molding methods, such as injection molding processing molding, extrusion, electrostatic coating, etc. Because the PEEK has excellent comprehensive performance, since the introduction is expensive, but in an electrical and mechanical instrument and the space has been applied in areas such as, is a kind of polymer materials development prospects. Liquid crystal polymer is refers to the parts of macromolecular chain can still under the category of polymer are arranged orderly.
liquid crystal polymer research originated in the 1950 s, 70 s began after applied to practical production. Liquid crystal polymer variety, performance, it is a new high performance materials, application prospect is very broad. According to the of the formation of liquid crystal, liquid crystal polymer can be divided into thermotropic liquid crystal polymer and lyotropic liquid crystal polymer. The former, in the process of heating molten form liquid polymer can still retain certain ordered arrangement, namely the formation of liquid crystal state of thermotropic liquid crystal polymer is formed in their own heat to melt the molten, the latter refers to the proper solvent and a certain concentration range of macromolecular are arranged orderly in certain rule, namely is part of the nature of crystal in solution.
good CP of melt flow, conventional methods available for processing, such as injection molding processing, extrusion, blow molding, etc. Polyether ether ketone in 1980 by the British empire first chemical production company, belong to the poly (aryl ether ketone resin, is a kind of high performance new heat-resistant engineering plastics. The molecular structure of PEEK contains a lot of benzene ring, ketone group, ether bond, so his present soft has both the characteristics of the molecular chain. Because the flexible macromolecular chain neat and to a certain extent, has crystallization ability, maximum crystallinity of 48%.
lyotropic liquid crystal polymers are mainly used for the preparation of high strength, high modulus, heat-resistant fiber, a large number of used as engineering plastics is a thermotropic liquid crystal polymer. Thermotropic liquid crystal polymer main chains of big rigidity, can form high orientation in the processing of plastic injection molding process, and thus has high mechanical strength, such as some of the tensile strength of up to 110 - 165 mpa, the elastic modulus of - 10300 17000MPa。 Its thermal expansion coefficient than conventional polymer is much lower, and some metals are similar, showing excellent dimensional stability. It has good gas barrier property is another characteristic of thermotropic liquid crystal polymer, it for oxygen, nitrogen, carbon dioxide, hydrogen and argon gas permeability coefficient is small.
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PEEK has excellent heat resistance, melting point 334 ℃, the long-term use of temperature above 240 ℃, the glass fiber reinforced varieties can be as high as 300 ℃. Mechanical strength higher than that of general plastic, creep, fatigue resistance, wear resistance; Excellent electrical insulation properties, in the high frequency electric field can keep low dielectric constant and dielectric loss. In addition to the concentrated sulfuric acid, can almost any chemicals, of all the engineering plastics, has the best hot water and steam resistance, can be used in 200 ℃ steam medium to long term, in 300 ℃ high pressure steam and medium-term use; Excellent flame retardancy, general situation is very difficult to burn, good radiation resistance, the y rays, resist ability is one of the best in polymer materials.
characteristics of thermotropic liquid crystal polymer is above the melting point has a very low melt viscosity, easy processing, injection molding processing, such as extrusion molding processing can be performed, the products have been used for aerospace and electronic electrical industry and other fields. Thermotropic liquid crystal polymer, but also with a variety of plastic materials, polymer blends in the blending material of liquid crystal polymer fiber reinforced role, greatly improving the blending material strength, stiffness and heat resistance.
PEEK into linear thermoplastic plastics, can the conventional molding methods, such as injection molding processing molding, extrusion, electrostatic coating, etc. Because the PEEK has excellent comprehensive performance, since the introduction is expensive, but in an electrical and mechanical instrument and the space has been applied in areas such as, is a kind of polymer materials development prospects. Liquid crystal polymer is refers to the parts of macromolecular chain can still under the category of polymer are arranged orderly.
liquid crystal polymer research originated in the 1950 s, 70 s began after applied to practical production. Liquid crystal polymer variety, performance, it is a new high performance materials, application prospect is very broad. According to the of the formation of liquid crystal, liquid crystal polymer can be divided into thermotropic liquid crystal polymer and lyotropic liquid crystal polymer. The former, in the process of heating molten form liquid polymer can still retain certain ordered arrangement, namely the formation of liquid crystal state of thermotropic liquid crystal polymer is formed in their own heat to melt the molten, the latter refers to the proper solvent and a certain concentration range of macromolecular are arranged orderly in certain rule, namely is part of the nature of crystal in solution.
good CP of melt flow, conventional methods available for processing, such as injection molding processing, extrusion, blow molding, etc. Polyether ether ketone in 1980 by the British empire first chemical production company, belong to the poly (aryl ether ketone resin, is a kind of high performance new heat-resistant engineering plastics. The molecular structure of PEEK contains a lot of benzene ring, ketone group, ether bond, so his present soft has both the characteristics of the molecular chain. Because the flexible macromolecular chain neat and to a certain extent, has crystallization ability, maximum crystallinity of 48%.
lyotropic liquid crystal polymers are mainly used for the preparation of high strength, high modulus, heat-resistant fiber, a large number of used as engineering plastics is a thermotropic liquid crystal polymer. Thermotropic liquid crystal polymer main chains of big rigidity, can form high orientation in the processing of plastic injection molding process, and thus has high mechanical strength, such as some of the tensile strength of up to 110 - 165 mpa, the elastic modulus of - 10300 17000MPa。 Its thermal expansion coefficient than conventional polymer is much lower, and some metals are similar, showing excellent dimensional stability. It has good gas barrier property is another characteristic of thermotropic liquid crystal polymer, it for oxygen, nitrogen, carbon dioxide, hydrogen and argon gas permeability coefficient is small.
more wonderful articles, PPS, click directly.
http://www。 csssld。 cn//html/2017/Info_1027/708。 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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