一种可膨胀微球及其制备方法和用途

By adjusting the component ratio through suspension polymerization, expandable microspheres with a wide stable foaming temperature range and high foaming ratio were prepared, solving the problem of narrow stable foaming temperature range of existing heat-resistant high-temperature thermal expansion microspheres and achieving a highly efficient foaming effect.

CN117964836BActive Publication Date: 2026-07-17SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN UNIV
Filing Date
2023-11-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing heat-resistant high-temperature thermal expansion microspheres have a narrow stable foaming temperature range, and the foaming ratio needs to be improved.

Method used

Expandable microspheres were prepared by suspension polymerization. By adjusting the proportions of monomers, foaming agents, crosslinking agents, and other components, microspheres with a wide foaming temperature range and high foaming ratio were prepared. The specific steps included mixing oil and water phases, emulsification, high-pressure reaction, acidification, and drying.

Benefits of technology

It achieves a stable foaming temperature range of up to 60℃ and a foaming ratio of up to 30, making it suitable for preparing lightweight foaming agents with a wide application temperature range.

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Abstract

本发明提供了一种可膨胀微球及其制备方法和用途，属于发泡材料领域。该可膨胀微球是是将油相和水相混合后经悬浮聚合得到的产物，所述油相包括单体、发泡剂、交联剂和引发剂，水相包括悬浮剂、助悬浮剂、电解质和水；所述单体由丙烯腈、甲基丙烯腈、甲基丙烯酸羟乙酯和N,N‑二甲基丙烯酰胺组成，其中丙烯腈、甲基丙烯腈、甲基丙烯酸羟乙酯和N,N‑二甲基丙烯酰胺的质量比为(50‑85)：(15‑35)：(10‑30)：(10‑25)。本发明提供的可膨胀微球稳泡温程高达60℃，(体积)发泡倍率高达30，在制备质轻且应用温度范围广的发泡剂中具有广阔的应用前景。
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