Innovative research on DOPA-grafted brucite powder to enhance flame retardancy and toughness of POE

In the field of materials science, improving the flame retardant properties and toughness of thermoplastic elastomers (POE) is a hot research topic. In this study, a new organic-inorganic hybrid flame retardant DOPA-MH was successfully prepared by grafting brucite powder with DOPA (oxidized phosphaphenanthrene), which significantly improved the flame retardant performance and elongation at break of POE materials. , providing new ideas for the application expansion of POE.

Polyolefin elastomers (POE) are widely used in multiple industries due to their excellent physical properties. However, its low flame retardant properties limit its application in specific fields. This study explores the flame retardancy and toughening of POE systems by grafting brucite powder with DOPA.

 Research background

Traditional halogen flame retardants are gradually being replaced by halogen-free flame retardants due to environmental and health concerns. Magnesium hydroxide (MH), as an environmentally friendly halogen-free flame retardant, has attracted attention due to its high decomposition temperature and smoke suppression properties. However, MH has poor compatibility with POE, which limits its application.

research methods

Using DOPA grafting technology, the synthesis and morphology of DOPA-MH were verified by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The impact of DOPA-MH on POE performance was evaluated through vertical combustion (UL 94) testing and mechanical property testing.

Research results

Experimental results show that the addition of DOPA-MH significantly improves the flame retardant properties of POE. At the same time, compared with unmodified MH, DOPA-MH increases the elongation at break of POE from 210.6% to 770.5%, showing excellent The toughening effect.

The introduction of DOPA grafted brucite powder not only improves the compatibility of MH and POE, but also enhances the flame retardant performance by forming a more uniform carbon layer structure. In addition, the addition of DOPA-MH reduces toxic gas emissions during the combustion process.

 Application prospects

DOPA grafted brucite powder, as a flame retardant and toughening agent for POE, is expected to be used in automobiles, electronics, construction and other fields, especially in applications requiring high flame retardant performance and mechanical properties.

DOPA grafted brucite powder provides an efficient flame retardant and toughening solution for POE, meets environmental protection and safety standards through technological innovation, and opens up new possibilities for the application of POE materials.