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Polyester molded composition and production method and application thereof

A technology of molding composition and polyester, which is applied in the field of polyester resin composition, can solve problems such as the influence of the binding force of the bracket material and the metal strip, the influence of the service life of the airtight LED lamp, etc., and achieve improvement Bonding force, the effect of meeting airtightness requirements

Inactive Publication Date: 2019-06-11
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the above patent documents can improve the light and heat aging properties of polyester materials and have good reflectivity and packaging effect, they do not mention the bonding force between the bracket material and the metal strip in the LED reflective bracket and its airtightness to the lamp bead And the influence of LED lamp service life

Method used

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  • Polyester molded composition and production method and application thereof
  • Polyester molded composition and production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment and

[0068] Embodiment and comparative example:

[0069] Weigh the PCT resin, white pigment, reinforcing material and phosphorus-containing compound according to the parts by weight in Table 1, mix the polyester resin, white pigment, and phosphorus-containing compound in a high mixer, and add the mixture to the twin-screw extruder , the reinforcing material is fed in the 4th to 9th section of the extruder, and the feeding is controlled by a weight loss scale. The temperature in each zone of the extruder is 270 °C in the 1st area, 280 °C in the 2nd to 4th area, 290 ° C in the 5th to 7th area, and 8~ Melt blending at 280°C in zone 9 and 270°C in the machine head, extrusion and granulation to obtain a polyester molding composition.

[0070] Table 1. The specific composition and test performance results (parts by weight) of each composition in Examples 1-8 and Comparative Examples 1-5

[0071]

implement

example 1

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Example 2

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Example 3...

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Abstract

The invention discloses a polyester molded composition. The polyester molded composition comprises the following components: 50-80 parts of PCT resin, 10-30 parts of white pigment, 10-30 parts of enhancing material and / or filler and 0.1-2 parts of phosphorous compound; and the phosphorous compound is of a structure as shown in the description, wherein R1 is aryl or OR2, R2 is aryl or alkyl containing 1-30 carbon atoms, R3 is alkyl containing 1-10 carbon atoms, and R4 and R5 are phenyl or alkyl containing 0-10 carbon atoms. A production method comprises the steps of mixing the polyester resin,the white pigment and the phosphorous compound in a high-speed mixer according to proportions, adding a mixture, the enhancing material and / or the filler into a twin-screw extruder, and conducting melt blending, extruding and granulating on a mixture to obtain the polyester molded composition. The polyester molded composition has high adhesion to a metal material strap and good air impermeability,reflectivity and light-resistant and heat-aging-resistant performance.

Description

technical field [0001] The invention relates to a polyester resin composition, in particular to a polyester molding composition which can be used for LED reflectors. Background technique [0002] As a new type of industry, LED has a wide range of applications, mainly including LED display and lighting, such as indoor lighting, street lights, traffic signals, mobile phone keyboards, digital cameras, large-size LCD TVs, laptop display screens and other display screens. [0003] The SMD type LED reflective bracket is to put the punched and electroplated metal strip into the injection mold, and then inject the LED reflective bracket material on the metal strip through the injection molding machine, so that the LED reflective bracket material and the metal strip Made into LED functional parts with reflective cavity that can be SMT welded. After solid crystal, wire bonding, and packaging, the light emitted by the LED chip is reflected at a certain angle to reduce light loss, and ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K9/06C08K3/22C08K7/14C08K5/527H01L33/56H01L33/60
Inventor 杨汇鑫姜苏俊麦杰鸿蒋智强阎昆李闻达王鹏
Owner KINGFA SCI & TECH CO LTD
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