Polyester composite material for nano injection molding and preparation method thereof

A polyester composite material and nano-injection molding technology, applied in the field of composite materials, can solve problems such as complex preparation methods, achieve simple and easy preparation methods, be suitable for large-scale production applications, and improve the bonding strength

Inactive Publication Date: 2015-05-20
GUANGZHOU CHENDONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to provide a kind of preparation method of the polyester composite material that is used for nano-injection molding, has solved the defect that preparation method is complicated in the prior art

Method used

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  • Polyester composite material for nano injection molding and preparation method thereof
  • Polyester composite material for nano injection molding and preparation method thereof
  • Polyester composite material for nano injection molding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The components in Table 1 are mixed in a mixer according to the weight ratio shown in Table 1, and then granulated with a twin-screw extruder at a granulation temperature between 220°C and 250°C. The obtained particles are processed by injection molding according to the standards and methods in the Japanese Taisei Chemical patent and the binding force is tested. The test results are shown in Table 1.

[0026] Table 1

[0027]

[0028] Wherein EVA is ethylene-vinyl acetate copolymer.

[0029] From the comparison of the reference and the sample in Table 1, it can be seen that the addition of other polyesters can greatly improve the bonding force between the PBT-based polyester composite and metal. And as the content of other polyesters increases, the binding force is further improved. This is mainly because the crystallization rate of other polyesters is significantly lower than that of PBT, and their addition can reduce the overall crystallization rate of the syste...

Embodiment 2

[0031] The components in Table 2 were mixed in a mixer according to the weight ratio shown in Table 2, and then granulated with a twin-screw extruder at a granulation temperature between 220°C and 250°C. The obtained particles were processed by injection molding according to the standards and methods described in the specification and the binding force was tested. The test results are shown in Table 2.

[0032] Table 2

[0033]

[0034] Wherein EVA is ethylene-vinyl acetate copolymer.

[0035] In Example 2, Sample 5 in Example 1 was used as a reference. It can be seen from the data in Table 2 that when metal salt compounds are added to the system, the binding force between plastic and metal is significantly improved, and the binding force will increase with the increase of the metal salt compound content, especially when the metal salt compound When the content of the content reaches more than 0.5%, the binding force is obviously improved. This is mainly because the met...

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PUM

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Abstract

The invention provides a polyester composite material for nano injection molding. The material is prepared from the following components in percentage by weight: 37.5-81% of polyester resin, 3-20% of polyolefin, 0.05-0.5% of an antioxidant, 0.1-2.0% of a release agent and 10-40% of glass fibers, wherein the polyester resin contains PBT resin which accounts for 30-70wt% of the polyester composite material for nano injection molding. The invention further provides a preparation method of the polyester composite material for nano injection molding. According to the polyester composite material for nano injection molding, in a nano injection molding process, the bonding strength of the resin and metals can be hugely improved. The preparation method provided by the invention is simple and feasible and suitable for large-scaled production and application.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a polyester composite material for nano-injection molding and a preparation method thereof. Background technique [0002] The technology is in-mold injection molding technology and adhesive bonding technology. As metals are used in the field of consumer electronics, especially in many industrial fields, it is necessary to use the combination design of plastic and metal. The two most common plastic / metal bonding machines, the demand for tablet computers and notebook computers has increased, and there is an urgent need for a more effective plastic / metal bonding technology, which requires higher bonding strength, simpler production processes, and higher Design freedom, lighter weight and smaller size. [0003] Japan's Taisei Corporation invented the nano-injection molding process (NMT), which is disclosed in a series of patents of the company (WO 2007 / 040245, etc.), modified pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L23/12C08L23/08C08K13/04C08K7/14C08K5/098C08K5/42
Inventor 李东阵刘冬梅
Owner GUANGZHOU CHENDONG NEW MATERIALS
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