Baking-deformation-resistant low-warpage reinforced polyester alloy material as well as preparation method and application thereof
A technology of alloy material and polyester alloy, which is applied in the field of engineering plastics, can solve the problems of poor glossiness of high-temperature baking deformation effect, improve high-temperature baking deformation effect, reduce warpage, and good high-temperature baking resistance The effect of baked deformation effect
Pending Publication Date: 2022-05-24
KINGFA SCI & TECH CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a low-warping reinforced polyester alloy material resistant to baking deformation and its preparation method and application, so as to overcome the high-temperature baking deformation resistance and poor gloss of PBT resin materials in the prior art. good defect
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preparation example Construction
[0058] The preparation method of polyester alloy material comprises the following steps:
[0059] (1) Dry the PBT resin and PET resin at 130° C. for 4 to 6 hours, and control the moisture content to be less than 0.03%. Control the length of drying time to control the moisture content to meet the requirements;
[0060] (2) According to the proportions in Table 1 and Table 2, the PBT resin and PET resin after drying treatment and other components except ordinary alkali-free glass fiber are mixed with a high-speed stirring mixer;
[0061] (3) Feed the above-mentioned mixed material into the twin-screw extruder, adjust the feeding amount to 450-800kg / hour, and feed ordinary alkali-free glass fiber on the side of the twin-screw extruder, and the twin-screw extruder starts from the feeding port. The temperature of each section of the screw to the head is 230°C, 240°C, 240°C, 250°C, 260°C, 250°C, 240°C, 230°C, 220°C, and the screw speed is 400rpm. Under the action of shearing and m...
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Abstract
The invention relates to a baking-deformation-resistant low-warpage reinforced polyester alloy material as well as a preparation method and application thereof. The alloy material comprises the following components in parts by weight: 40-50 parts of PBT resin; 8 to 12 parts of PET resin; 18 to 25 parts of ABS resin; 4 to 8 parts of a PETG resin compound; 1-5 parts of a toughening agent; 10 to 20 parts of alkali-free glass fiber; and 0.1 to 0.6 part of a nucleating agent. The alloy material has relatively high glossiness and tensile strength, relatively low warping degree and relatively good high-temperature baking deformation resistance effect.
Description
technical field [0001] The invention belongs to the technical field of engineering plastics, and in particular relates to a low warpage reinforced polyester alloy material resistant to baking deformation and a preparation method and application thereof. Background technique [0002] Polybutylene terephthalate (PBT) has excellent electrical properties, mechanical strength, solvent resistance and processability due to its crystallization and linear saturation. The modified polyester is widely used in household appliances as high temperature resistant parts and other fields. Applications. Although PBT has excellent above-mentioned properties, it also has shortcomings. For example, because of its crystalline material, especially the parts after adding glass fiber, it is easy to warp and deform. In order to solve the warping deformation after adding glass fiber, it is often used in materials Adding one or more compounds of mineral filling, flat glass fiber or amorphous resin, it...
Claims
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IPC IPC(8): C08L67/02C08L55/02C08K7/14C08K3/34
CPCC08L67/02C08L2205/025C08L2201/08C08L55/02C08K7/14C08K3/34
Inventor 朱文陈平绪叶南飚莫文杰付学俊
Owner KINGFA SCI & TECH CO LTD