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Modified polyester transparent composite material and preparation method thereof

A composite material and modified polyester technology, applied in the field of polymer materials, can solve the problems of decreased physical and mechanical properties, large haze, affecting the application of polyester materials, etc., and achieve good physical and mechanical strength and toughness, low haze, The effect of high industrial application value

Active Publication Date: 2022-01-28
DONGGUAN TARRY ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the polyester resin is partially compatible with the methacrylic polymer, the blend interface is prone to phase separation, the physical and mechanical properties are reduced, and the haze is generally relatively large, which greatly affects the use of polyester materials in optical grade engineering plastics. and transparent packaging materials

Method used

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  • Modified polyester transparent composite material and preparation method thereof
  • Modified polyester transparent composite material and preparation method thereof
  • Modified polyester transparent composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The concrete steps of modified polyester transparent composite material are:

[0066] Crystalline destruction of polyester resin: pre-dry the polyester resin in an oven at 110°C for 5 hours to remove moisture, melt and extrude through a twin-screw extruder, and air-cool and pelletize to obtain an amorphous polyester resin with crystallization destruction. The extrusion temperature of the twin-screw extruder is 250° C., and the extrusion speed is 60 rpm.

[0067] Drying treatment of polyester resin: immediately transfer the amorphous polyester resin obtained in the previous step to a drying device, and dry to remove moisture for later use. The drying equipment is an infrared oven, and the drying condition is 65° C. for 8 hours.

[0068] Pretreatment of the methyl methacrylate polymer and the compatibilizer: the methyl methacrylate polymer and the compatibilizer are dried separately to remove moisture, and then set aside. The drying condition is an infrared oven, and th...

Embodiment 2

[0075] Crystalline destruction of polyester resin: pre-dry the polyester resin in an oven at 140°C for 2 hours to remove moisture, melt and extrude through a twin-screw extruder, and air-cool and pelletize to obtain an amorphous polyester resin with crystallization destruction. The extrusion temperature of the twin-screw extruder is 300° C., and the extrusion speed is 120 rpm.

[0076] Drying treatment of polyester resin: immediately transfer the amorphous polyester resin obtained in the previous step to a drying device, and dry to remove moisture for later use. The drying equipment is an infrared oven, and the drying condition is 85° C. for 4 hours.

[0077] Pretreatment of the methyl methacrylate polymer and the compatibilizer: the methyl methacrylate polymer and the compatibilizer are dried separately to remove moisture, and then set aside. The drying condition is an infrared oven, and the drying condition is 105° C. for 2 hours.

[0078] The solid-phase polycondensed pol...

Embodiment 3

[0084] Crystallization destruction of polyester resin: pre-dry the polyester resin in an oven at 120°C for 3 hours to remove moisture, melt and extrude through a twin-screw extruder, and air-cool and pelletize to obtain an amorphous polyester resin with crystallization destruction. The extrusion temperature of the twin-screw extruder is 260° C., and the extrusion speed is 80 rpm.

[0085] Drying treatment of polyester resin: immediately transfer the amorphous polyester resin obtained in the previous step to a drying device, and dry to remove moisture for later use. The drying equipment is an infrared oven, and the drying condition is 70° C. for 6 hours.

[0086] Pretreatment of the methyl methacrylate polymer and the compatibilizer: the methyl methacrylate polymer and the compatibilizer are dried separately to remove moisture, and then set aside. The drying condition is a blast oven, and the drying condition is 90° C. for 4 hours.

[0087] The polyester resin is solid-phase ...

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Abstract

The invention provides a modified polyester transparent composite material and a preparation method thereof, wherein the composite material is prepared from resin materials through blending and molding processes, and the resin materials comprise the following components in parts by mass: 60-80 parts of polyester resin, 15-28 parts of a methyl methacrylate polymer, and 5-12 parts of a compatilizer, wherein the polyester resin is thermoplastic aromatic polyester, and the compatilizer is acrylic acid type polyhydric alcohol monoester. The modified polyester transparent composite material provided by the invention has relatively high light transmittance, extremely low haze, good physical and mechanical strength and toughness and good scratch resistance, and can be widely applied to various foods, medicines and non-toxic and sterile packaging materials, high-grade packaging materials for textiles, precise instruments and electronic components, and transparent shells of automobile parts and electronic appliances.

Description

technical field [0001] The present application relates to the technical field of polymer materials, in particular to a modified polyester transparent composite material and a preparation method thereof. Background technique [0002] Thermoplastic polyester materials such as polyethylene terephthalate (PET) have low specific gravity, high strength, high rigidity, good heat resistance, air tightness and toughness, as well as excellent dimensional stability and chemical insulation Performance, widely used in electronic and electrical components, packaging, automobile industry and other fields. [0003] Polyester resin usually has disadvantages such as low surface hardness and easy abrasion. In order to improve the surface hardness and scratch resistance of polyester materials such as PET resin, there is a physical modification method in the prior art, generally by melt-blending it with a hardening resin. Methyl methacrylate polymers (PMMAs) are widely used in the optical fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L33/12C08L71/02C08K5/101
CPCC08L67/02C08L2201/10C08L2205/08C08L33/12C08L71/02C08K5/101
Inventor 胡树李健李清平
Owner DONGGUAN TARRY ELECTRONICS
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