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Preparation method of aryl phosphate modified PBT (Polybutylene Terephthalate) alloy material

An aryl phosphate and alloy material technology, applied in the field of polymer material preparation, can solve the problems of low notched impact strength, large PBT molding shrinkage, insufficient toughness and temperature resistance, etc.

Inactive Publication Date: 2013-08-21
常熟市协新冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PBT or polybutylene terephthalate has the characteristics of good chemical stability, fast crystallization rate, excellent mechanical properties and convenient processing and molding, but PBT has large molding shrinkage, low notched impact strength, insufficient toughness and temperature resistance Shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, 35 parts of PBT with a melting point of 230°C and 16 parts of polytrimethylene terephthalate resin with a melting point of 220°C weighed in parts by weight were put into a drying device and dried at 110°C for 480 minutes to obtain PBT dry material and Dry material of polytrimethylene terephthalate, and the two dry materials are weighed in parts by weight together with 12 parts of polyethylene resin with a melting point of 130°C, 7 parts of polyethylene resin grafted with maleic anhydride, 6 parts of hydroquinone tetraphenyl diphosphate, 20 parts of nano-calcium carbonate, 1.1 parts of 2,5-di-tert-butylhydroquinone, 10 parts of alkali-free glass fiber with a length of 6 mm and the 0.9 parts of carbon black are put into a high-speed mixer and mixed for 8.5min to obtain a compound, then the compound is put into a parallel twin-screw extruder for melt extrusion, cooling, and granulation to obtain the PBT alloy material modified by aryl phosphate, Wherein: the extrusi...

Embodiment 2

[0018] First, 46 parts of PBT with a melting point of 230°C and 11 parts of polytrimethylene terephthalate resin with a melting point of 220°C weighed in parts by weight were put into a drying device and dried at 110°C for 480 minutes to obtain PBT dry material and Dry material of polytrimethylene terephthalate, and the two dry materials are weighed in parts by weight together with 8 parts of polyethylene resin with a melting point of 130°C, 9 parts of polyethylene resin grafted with maleic anhydride, 8 parts of hydroquinone tetraphenyl diphosphate, 24 parts of nano-calcium carbonate, 0.6 parts of 2,5-di-tert-butylhydroquinone, 14 parts of alkali-free glass fiber with a length of 6 mm and the 1.2 parts of carbon black were put into a high-speed mixer and mixed for 8.5min to obtain a compound, then the compound was put into a parallel twin-screw extruder for melt extrusion, cooling, and granulation to obtain the PBT alloy material modified by aryl phosphate, Wherein: the extrus...

Embodiment 3

[0020] First, 42 parts of PBT with a melting point of 230°C and 14 parts of polytrimethylene terephthalate resin with a melting point of 220°C weighed in parts by weight were put into a drying device and dried at 110°C for 480 minutes to obtain PBT dry material and Dry material of polytrimethylene terephthalate, and the two kinds of dry materials are weighed in parts by weight together with 15 parts of polyethylene resin with a melting point of 130°C, 13 parts of polyethylene resin grafted with maleic anhydride, 7 parts of hydroquinone tetraphenyl diphosphate, 16 parts of nano-calcium carbonate, 0.9 parts of 2,5-di-tert-butyl hydroquinone, 19 parts of alkali-free glass fiber with a length of 6 mm and the 0.8 parts of carbon black are put into a high-speed mixer and mixed for 8.5min to obtain a compound, then the compound is put into a parallel twin-screw extruder for melting and extruding, cooling, and granulation to obtain the PBT alloy material modified by aryl phosphate, Wh...

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Abstract

The invention discloses a preparation method of an aryl phosphate modified PBT (Polybutylene Terephthalate) alloy material, and belongs to the technical field of high polymer material preparation. The preparation method comprises the following the steps of: adding 35-46 parts of PBT and 11-16 parts of polytrimethylene terephthalate to a drying device and drying to obtain dried PBT material and dried polytrimethylene terephthalate material; adding the two dried materials, 8-15 parts of olefin resin, 7-13 parts of compatilizer, 6-8 parts of aryl phosphate, 16-24 parts of fillers, 0.6-1.1 parts of antioxidant, 10-19 parts of reinforced fibers and 0.6-1.2 parts of carbon black to a high-speed mixer, mixing for 8.5 minutes to obtain mixed materials, transferring the mixed materials to a parallel double-screw extruder for fusing and extruding, and cooling and granulating to obtain the aryl phosphate modified PBT alloy material, wherein the extruding temperature of the double-screw extruder is controlled to 230 DEG C-240 DEG C. The alloy material has the performance indexes as follows: tensile strength of 131MPa-144MPa, bending strength of 225MPa-243MPa, notch impact strength of 62j / m-81j / m, and thermal deformation temperature of 215DEG C-231 DEG C.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of an aryl phosphate modified PBT alloy material. Background technique [0002] PBT or polybutylene terephthalate has the characteristics of good chemical stability, fast crystallization rate, excellent mechanical properties and convenient processing and molding, but PBT has large molding shrinkage, low notched impact strength, insufficient toughness and temperature resistance Shortcomings. Polytrimethylene terephthalate (PTT) has the characteristics of high strength, good toughness and high temperature resistance. If the advantages of these two resins are combined, they can complement each other and obtain PBT with excellent comprehensive properties. For this reason, the applicant has made beneficial attempts, and has finally formed the technical scheme to be introduced below. Contents of the invention [0003] The task ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08K13/04C08K7/14C08K5/523C08K3/26C08K5/13C08K3/04
Inventor 沈国俭
Owner 常熟市协新冶金材料有限公司