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PBT-PET modified plastic for communication equipment
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A communication equipment and modification technology, applied in the field of engineering plastics, can solve problems such as large demand for materials
Inactive Publication Date: 2019-07-05
SUZHOU WEIRUICHENG NEW MATERIAL
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Problems solved by technology
With the development of communication technology, in order to reduce the dielectric loss, there is a greater demand for materials with high dielectric constant, and the current BT-PET modified plastics are difficult to meet this demand
Method used
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Embodiment 1
[0023] First, 28 parts of PBT, 35 parts of PET, 12 parts of vinylidene fluoride, 15 parts of tetrafluoroethylene, 1 part of sodium dihydrogen phosphate, 20 parts of magnesiumtitanate, 1 part of ultraviolet absorber, tris[2.4-di-tert-butylbenzene Base] 1 part of phosphite, 6 parts of bisphenol A type epoxy resin are put into twin-screw extruder and blended,
[0024] The twin-screw extruder has ten zones, and the temperatures of each zone are: 280°C, 270°C, 268°C, 270°C, 260°C, 255°C, 253°C, 250°C, 248°C, and 240°C.
Embodiment 2
[0026] First, 40 parts of PBT, 55 parts of PET, 21 parts of vinylidene fluoride, 19 parts of tetrafluoroethylene, 3 parts of ammonium dihydrogen phosphate, 25 parts of zirconiumbariumtitanate, 2 parts of hindered amine light stabilizer, tetrakis [β-(3 , 1 part of 5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, put into a twin-screw extruder for blending, and the average particle size of the inorganic filler is 200nm.
[0027] The twin-screw extruder has ten zones, and the temperatures of each zone are: 280°C, 279°C, 276°C, 268°C, 265°C, 250°C, 250°C, 248°C, 240°C, 240°C.
Embodiment 3
[0029] First, 50 parts of PBT, 70 parts of PET, 28 parts of vinylidene fluoride, 128 parts of tetrafluoroethylene, 3 parts of triphenyl phosphite, 30 parts of bismuthtitanate, 1 part of ultraviolet absorber, 1 part of hindered amine light stabilizer, 1 part of tris[2.4-di-tert-butylphenyl] phosphite, 12 parts of isocyanate modified epoxy resin are mixed in a twin-screw extruder, any one of bariumrubidium titanate or coppercalcium titanate Or a mixture of at least two.
[0030] The twin-screw extruder has ten zones, and the temperatures of each zone are: 280°C, 270°C, 270°C, 265°C, 260°C, 258°C, 256°C, 250°C, 248°C, 245°C.
[0031] Performance test, wherein, the dielectric property Dk / Df is measured by the plate capacitance method to measure the dielectric constant Dk and dielectric loss Df of the sample plate at 1 GHz.
[0032]
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Abstract
The invention discloses a PBT-PET modified plastic for communication equipment. The PBT-PET modified plastic comprises following raw materials in parts by weight: 25 to 55 parts of PBT, 30 to 75 partsof PET, 10 to 30 parts of vinylidene fluoride, 15 to 30 parts of tetrafluoroethylene, 1 to 5 parts of an ester exchange inhibitor, 20 to 30 parts of an inorganic filling material, and 0 to 5 parts ofan auxiliary agent. The modified plastic has good weatherability, excellent mechanical properties, a high dielectric constant, and a strong electromagnetic shielding performance; can be used to prepare basic parts of large power communication equipment, and is also widely used in 5G communication equipment.
Description
technical field [0001] The invention relates to engineering plastics, in particular to a PBT-PET modified plastic for communication equipment. Background technique [0002] Polybutylene terephthalate, referred to as PBT, and polyethylene terephthalate, referred to as PET are thermoplastic polyesters developed in the 1970s. They have the advantages of high temperature resistance, humidity resistance, and chemical corrosion resistance. It can maintain good mechanical properties in a wide temperature range. With the development of communication technology, in order to reduce the dielectric loss, there is a greater demand for materials with high dielectric constant, and the current BT-PET modified plastics are difficult to meet this demand. Contents of the invention [0003] In order to solve the above technical problems, an embodiment of the present invention provides a PBT-PET modified plastic for communication equipment. [0004] In order to achieve the above object, tech...
Claims
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