Polyester resin composition as well as preparation method and application thereof

A polyester resin and composition technology, applied in the field of polyester resin composition and its preparation, can solve the problems of molecular chains not being crystallized in time, insufficient molecular chain mobility, and reduced dimensional stability, etc., to achieve perfect material crystallization and improve Dimensional stability and improved mobility

Pending Publication Date: 2021-03-26
KINGFA SCI & TECH CO LTD +1
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  • Claims
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Problems solved by technology

However, the researchers found that because the PCT material is a semi-crystalline polymer, the cooling rate of the material is extremely fast under cold molding conditions, and the molecular chain mobility of the PCT material is insufficient, resulting in some molecular chains not being crystallized in time, causing incomplete crystallization
When the injection molded refle

Method used

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  • Polyester resin composition as well as preparation method and application thereof

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific examples and comparative examples. The following specific examples are all preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the following examples, especially not limited to The models of each component raw material used in the following specific examples.

[0025] The raw materials used in the following examples and comparative examples are derived from commercially available products.

[0026] PCT resin-A: intrinsic viscosity: 0.719 dL / g, Eastman Chemical Products (EastmanTM Chemical Products), PCT36296.

[0027] PCT resin-B: intrinsic viscosity: 0.65dL / g, SK Chemicals (SK Chemicals), 0302;

[0028] PCT resin-C: intrinsic viscosity: 0.75dL / g, SK Chemicals (SK Chemicals), 0502;

[0029] Hyperbranched polyester-A: molecular weight 920g / mol, hydroxyl value 370mg KOH / g, Wuhan Hyperbranched Resin Technology Co., Ltd.;

[0030]...

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Abstract

The invention discloses a polyester resin composition which comprises the following components in parts by weight: 100 parts of PCT resin; 0-50 parts of a reinforcing material; and 0.1-0.8 part of a hyperbranched polyester; wherein the molecular weight of the hyperbranched polyester is 600-10000 g/mol, and the hydroxyl value of the hyperbranched polyester is 200-600 mg KOH/g. By adding specific parameters and a specific amount of hyperbranched polyester, the defect of insufficient dimensional stability of the PCT resin can be improved, and cold crystallization is inhibited.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyester resin composition and its preparation method and application. Background technique [0002] The birth of light-emitting diodes (LEDs) brought the lighting industry into the era of semiconductor lighting. LED light sources have the advantages of high reliability, high luminous power, low power consumption, fast response speed, long life, low price, and rich colors. Following gas lighting, incandescent and fluorescent lamps, LED has become a new generation of mainstream lighting technology. With the development of the times and the advancement of science and technology, LEDs have been widely used in various fields such as street lights, indoor lighting, backlight displays, car headlights, and landscape lights. [0003] The LED reflector is the main component to reflect the LED light source, and it needs to have good dimensional stability and high temperature...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/00C08K7/14
CPCC08L67/02C08L2205/02C08L67/00C08K7/14
Inventor 阎昆黄险波叶南飚姜苏俊曹民杨汇鑫蒋智强
Owner KINGFA SCI & TECH CO LTD
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