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Laser markable high-shading polyester composite material for LED (Light Emitting Diode), and preparation method thereof

A polyester composite material and laser marking technology, which is applied in the field of polymer materials, can solve the problem that polyester materials cannot pass the new high and low temperature impact test standards, etc. Effect

Inactive Publication Date: 2017-09-26
东莞市东翔塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Furthermore, the existing polyester materials used for LEDs cannot pass the new high and low temperature impact test standards. Therefore, a polyester composite material for LEDs with high shading, which can be used for laser marking and can pass high and low temperature impact tests has been developed. appears to be particularly important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A laser-markable polyester composite material for high shading LEDs, the polyester composite material includes the following raw materials in parts by weight:

[0056] 40 parts of polyester

[0057] 15 parts glass fiber

[0058] Primary flame retardant 15 parts

[0059] Auxiliary flame retardant 3 parts

[0060] Toughener 4 parts

[0061] Antioxidant 0.1 parts

[0062] Sunscreen 10 parts

[0063] Laser marking powder 0.3 parts

[0064] 0.5 parts of other additives.

[0065] The polyester is polybutylene terephthalate, wherein the polybutylene terephthalate has an intrinsic viscosity of 0.7 dl / g, a melting temperature of 220° C., and a carboxyl-terminal content of 15 mol / t.

[0066] The glass fiber is an alkali-free chopped glass fiber with a single filament diameter of 10 μm and a surface treated with a silane coupling agent.

[0067] The main flame retardant is brominated polycarbonate.

[0068] The auxiliary flame retardant is antimony trioxide.

[0069] The...

Embodiment 2

[0078] A laser-markable polyester composite material for high shading LEDs, the polyester composite material includes the following raw materials in parts by weight:

[0079] 45 parts of polyester

[0080] 16 parts glass fiber

[0081] Primary flame retardant 16 parts

[0082] Auxiliary flame retardant 3.5 parts

[0083] Toughener 5 parts

[0084] Antioxidant 0.12 parts

[0085] Sunscreen 11 parts

[0086] Laser marking powder 0.5 parts

[0087] 0.6 parts of other additives.

[0088] The polyester is polybutylene terephthalate, wherein the polybutylene terephthalate has an intrinsic viscosity of 0.9 dl / g, a melting temperature of 225° C., and a carboxyl-terminal content of 16 mol / t.

[0089] The glass fiber is an alkali-free chopped glass fiber with a single filament diameter of 11 μm and a surface treated with a silane coupling agent.

[0090] The main flame retardant is brominated polycarbonate.

[0091] The auxiliary flame retardant is antimony pentoxide.

[0092]...

Embodiment 3

[0101] A laser-markable polyester composite material for high shading LEDs, the polyester composite material includes the following raw materials in parts by weight:

[0102] Polyester 50 parts

[0103] 18 parts glass fiber

[0104] Main flame retardant 18 parts

[0105] Auxiliary flame retardant 4 parts

[0106] Toughener 6 parts

[0107] Antioxidant 0.15 part

[0108] Sunscreen 12 parts

[0109] Laser marking powder 0.7 parts

[0110] 0.8 parts of other additives.

[0111] The polyester is polybutylene terephthalate, wherein the polybutylene terephthalate has an intrinsic viscosity of 1.2 dl / g, a melting temperature of 230° C., and a carboxyl-terminal content of 18 mol / t.

[0112] The glass fiber is an alkali-free chopped glass fiber with a single filament diameter of 12 μm and a surface treated with a silane coupling agent.

[0113] The main flame retardant is a brominated epoxy resin with an average molecular weight of 10,000.

[0114] The auxiliary flame retardan...

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a laser markable high-shading polyester composite material for an LED (Light Emitting Diode), and a preparation method thereof. The laser markable high-shading polyester composite material for the LED comprises the following raw materials in parts by weight: 40-60 parts of polyester, 15-20 parts of glass fiber, 15-20 parts of main fire retardant, 3-5 parts of auxiliary fire retardant, 4-8 parts of flexibilizer, 0.1-0.2 part of antioxidant, 10-15 parts of opacifier, 0.3-1.0 part of laser marking powder and 0.5-1.0 part of other accessory ingredients. The laser markable high-shading polyester composite material for the LED has the advantages of good shading effect, good anti-flaming effect, good temperature tolerance and weather fastness, high intensity, excellent shock resistance, good processability and excellent overall performance, can be used for laser marking and can pass a high and low temperature (40DEG C below-120DEG C) impact test.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a laser-markable polyester composite material for high shading LEDs and a preparation method thereof. Background technique [0002] Thermoplastic polyester is a linear polymer prepared by polycondensation reaction of dibasic acid and diol with dibasic acid and dibasic alcohol. The main commercial varieties are polybutylene terephthalate (PBT), polyethylene terephthalate ester (PET), and polytrimethylene terephthalate (PPT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polyterephthalate developed in recent years Formic acid-1,4-cyclohexane dimethyl ester (PCT), etc., among all polyesters, the amount of modified PBT is the largest, followed by modified PET and PTT or their alloys. [0003] In other aspects, with the continuous development of new material-related industries such as automobiles, machinery, and electrical appliances, new requirements are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L69/00C08L63/00C08L23/26C08L51/06C08L23/00C08L23/08C08K13/06C08K9/06C08K7/14C08K3/22C08K5/134C08K5/526B29C47/92B29C48/92
CPCC08L67/02B29C48/92B29C2948/92704C08K2003/2241C08K2003/2282C08K2201/003C08L2201/02C08L2201/08C08L2203/20C08L2205/035C08L69/00C08L23/26C08K13/06C08K9/06C08K7/14C08K3/22C08K3/2279C08K5/1345C08K5/526C08L23/0869C08L63/00C08L23/00C08L51/06
Inventor 马宝海陈林刘小池
Owner 东莞市东翔塑胶有限公司
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