聚对苯二甲酸-2,5-呋喃二甲酸乙二醇共聚酯发泡材料及其制备方法和应用

By modifying SiO2 to enhance the melt strength of polyethylene terephthalate-2,5-furandicarboxylate copolyester and forming a fine microporous structure, the problems of high cost and high density of PET light reflectors are solved, and a low-cost, lightweight and high-reflectivity light reflector is realized.

CN119912791BActive Publication Date: 2026-07-17NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
Filing Date
2023-10-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing PET light reflectors are expensive to manufacture, have high density, and rely on petroleum resources, making it difficult to achieve low-cost, lightweight, and high-reflectivity light reflectors.

Method used

Poly(2,5-furandicarboxylic acid) copolyester foam material is used. By using modified SiO2 as a heterogeneous nucleating agent for bubbles, the melt strength is enhanced, the content of copolymer units is controlled, a fine and uniform microporous structure is formed, the density is reduced and the light reflectivity is improved.

Benefits of technology

A low-cost, lightweight, and high-reflectivity light reflector has been developed, with a bio-based source, meeting the performance requirements of light reflectors.

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Abstract

本发明涉及一种聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯发泡材料，以质量分数计，制备原料包括90％‑99.5％的聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯和0.5％‑10％的改性SiO2，其中，聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯中，共聚单元2,5‑呋喃二甲酸的摩尔分数为5％‑30％，改性SiO2包括聚硅氧烷改性的SiO2及 / 或硅烷偶联剂改性的SiO2，聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯发泡材料的平均泡孔尺寸小于或等于22mm，密度小于或等于0.37g / cm3，光反射率大于或等于90％。本发明还提供一种聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯发泡材料的制备方法和应用，采用所述聚对苯二甲酸‑2,5‑呋喃二甲酸乙二醇共聚酯发泡材料制备的光反射板满足低成本、轻量化和高反射率的要求，且具有生物基来源。
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