Polyester resin composition, molded product prepared therefrom, and application of same

The invention discloses a polyester resin composition, a prepared molded product and application thereof. The polyester resin composition comprises the following components in parts by weight: 20-60 parts of polyester resin; 5-60 parts of a white pigment; 1-40 parts of a filler; and 0.1-1 part of an adhesion enhancer containing an ester group. According to the invention, by adding the adhesion enhancer containing the ester group, the interface bonding force between the polyester composition and the packaging silica gel can be greatly improved, so that the risk of lamp failure in the packagingand later long-term use processes of the LED device is effectively reduced, and the long-term use reliability of the LED device is remarkably improved. 本发明公开了一种聚酯树脂组合物、制备的模制品及其应用，包括组分：聚酯树脂20-60份；白色颜料5-60份；填料1-40份；包含酯基的粘接增强剂0.1-1份。本发明通过在聚酯组合物中加入包含酯基的粘接增强剂，可以大幅提高聚酯组合物与封装硅胶之间的界面结合力，有效降低LED器件在封装和后期长期使用过程中出现死灯的风险，显著提升LED器件的长期使用可靠性。