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Polyester composite material and method for preparing same

A polyester composite material and composite material technology, which is applied in the field of polymer material engineering plastics and its molding and processing, can solve the problems of narrow application area, inability to meet requirements, and few industrialized production varieties, and achieve improved demoulding, toughening and increasing. The effect of mold release and accelerated crystallization process

Inactive Publication Date: 2009-06-03
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic salt is a low-cost crystallization nucleating agent, but affected by the particle size and degree of dispersion, it is very limited in improving the crystallization rate of polyethylene terephthalate, which is far from meeting the requirements of polyethylene terephthalate. Requirements for the use of esters as engineering plastics
Therefore, there are few industrialized production varieties of polyethylene terephthalate engineering plastics, and the application area is narrow.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 70 kg of polyethylene terephthalate, 1 kg of hyperbranched polyamide (3,5-dinitrobenzoyl chloride and glycine as the fifth generation of monomer synthesis), 1 kg of crystallization accelerator polyethylene glycol 5 kg and 1 kg of other additives, mixed by high-speed stirring. Then it is fed into the twin-screw extruder by the precision metering feeder, and then 23 kilograms of glass fibers filled with reinforcing agent are sent into the twin-screw extruder from the precision metering feeder, plasticized, melted, compounded, and then extruded, Stranding, cooling, pelletizing, drying and packaging the finished product.

Embodiment 2

[0018] 80 kilograms of polyethylene terephthalate, hyperbranched polyamide (3,5-two (4-aminophenoxy) benzoic acid is synthesized as the sixth generation of monomer) 2 kilograms, crystallization accelerator polypropylene glycol 4 1 kg and 1 kg of other additives are mixed at high speed, and then sent to the twin-screw extruder by a precision metering feeder, and then 13 kg of glass fiber filled with a reinforcing agent is sent to the twin-screw extruder from the precision metering feeder. Plasticizing, melting, compounding, and then extruding, drawing, cooling, pelletizing, drying and packaging the finished product.

Embodiment 3

[0020] With 60 kilograms of polyethylene terephthalates, 1.3 kilograms of hyperbranched polyamides (DIPA and HHPA are the sixth generation of monomer synthesis), 6 kilograms of crystallization accelerators and 1.7 kilograms of other auxiliary agents, stir and mix at a high speed, and then It is fed into the twin-screw extruder by the precision metering feeder, and then 31 kg of carbon fiber filled with reinforcing agent is sent into the twin-screw extruder from the precision metering feeder, plasticized, melted, compounded, and then extruded and drawn , cooling, pelletizing, drying and packaging the finished product.

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PUM

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Abstract

The invention relates to a kind of polyester composite and the method for preparing the same. The comprised components with their content by weightfor said polyester composite are: polybutylene terephthalate (PET) 40- 80 units, super branched polyamide (HBPA) 0.1- 4 units, polymer promoter 1- 6 units, packing intensifier 10- 50 units, processing aid 0.5- 1 unit. The said polymer promoter possesses good flexiblility, which is good for polybutylene terephthalate movement, and can coordinate with crystallization nucleating agent to fasten crystallization, and increase flexibility and plasticity and improve demoulding.

Description

technical field [0001] The invention relates to a polyester composite material containing hyperbranched polyamide as a nucleating agent and a preparation method thereof. The composite and the preparation method belong to the field of polymer material engineering plastics and their molding processing. Background technique [0002] Polyethylene terephthalate (PET) is a crystalline high polymer with excellent comprehensive properties. However, due to the high rigidity of the main chain of PET and the slow movement of chain breaking, the crystallization speed is slow. The application in the field of engineering plastics is limited, specifically: high injection mold temperature, long molding cycle, easy mold sticking and warping of products, thus greatly limiting its application in the field of engineering plastics. [0003] Improving the crystallization rate is the key to improving the molding processability of polyethylene terephthalate (PET). At present, research in this area...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/03C08K7/14B29B9/12B29C47/40C08L77/00
Inventor 王鹏杨桂生
Owner HEFEI GENIUS NEW MATERIALS
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