CN-122011576-A - Composite material for releasing negative oxygen ions as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of negative oxygen ion materials, and particularly relates to a composite material for releasing negative oxygen ions, and a preparation method and application thereof. The preparation raw materials of the composite material for releasing negative oxygen ions comprise polypropylene, modified titanium dioxide, modified cerium dioxide and modified microcapsule salt, wherein the modified titanium dioxide is obtained by sequentially adopting a coupling agent and plasma to treat titanium dioxide coated with silicon dioxide, the modified cerium dioxide is obtained by adopting the coupling agent to treat cerium dioxide, the cerium dioxide comprises cerium dioxide containing oxygen vacancies, the modified microcapsule salt is obtained by adopting the plasma to treat microcapsule salt, the microcapsule salt has a core-shell structure, the composition of a core material of the core-shell structure comprises calcium salt, and the composition of a shell layer of the core-shell structure comprises silicon dioxide. The invention adopts the synergistic effect of the specific modified titanium dioxide, the modified cerium oxide and the modified microcapsule salt, thereby realizing the high-efficiency and continuous stable release of the negative oxygen ions.

Inventors

• Qu Muchao
• XU XIAOBIN
• Lin Yourun
• LIU SHUIYAN
• ZHANG JINZHU
• QIN YIJING
• GE XIN
• ZHOU LI
• ZHENG ZHENXING

Assignees

• 广东技术师范大学
• 广州海天塑胶有限公司

Dates

Publication Date

20260512

Application Date

20260214

Claims (10)

1. 1. The composite material is characterized in that the preparation raw materials of the composite material comprise polypropylene, modified titanium dioxide, modified cerium dioxide and modified microcapsule salt; the modified titanium dioxide is obtained by sequentially treating titanium dioxide coated with silicon dioxide by adopting a coupling agent and plasma; the modified cerium dioxide is obtained by adopting a coupling agent to treat the cerium dioxide; The ceria comprises ceria containing oxygen vacancies; The modified microcapsule salt is obtained by treating microcapsule salt by adopting plasma; The microcapsule salt has a core-shell structure, the composition of the core material of the core-shell structure comprises calcium salt, and the composition of the shell layer of the core-shell structure comprises silicon dioxide.
2. 2. The composite material of claim 1, wherein the coupling agent comprises a silane coupling agent; and/or, the plasma comprises an oxygen plasma; And/or, the calcium salt comprises calcium chloride.
3. 3. The composite material according to claim 1, wherein the preparation raw materials of the composite material comprise, by mass, 70-85% of polypropylene, 4-10% of modified titanium dioxide, 6-10% of modified cerium oxide and 4-10% of modified microcapsule salt.
4. 4. The composite of claim 1, wherein the raw materials for preparing the composite further comprise a lubricant.
5. 5. The composite material according to claim 4, wherein the preparation raw materials of the composite material comprise, by mass, 70-85% of polypropylene, 4-10% of modified titanium dioxide, 6-10% of modified cerium oxide, 4-10% of modified microcapsule salt and 1-3% of lubricant.
6. 6. A method of preparing a composite material according to any one of claims 1 to 5, comprising the steps of: Mixing the raw materials, melt blending and extruding to obtain the final product.
7. 7. The method of producing the modified titanium dioxide according to claim 6, comprising the steps of: (1) Mixing titanium dioxide and a solvent, then adding an organic silicon compound, water and a catalyst, and reacting to obtain titanium dioxide coated with silicon dioxide; (2) Mixing the titanium dioxide coated with the silicon dioxide and a coupling agent, and performing plasma treatment to obtain the titanium dioxide.
8. 8. The preparation method according to claim 6, wherein the preparation method of the modified ceria comprises the steps of: Mixing cerium oxide with solvent, adding coupling agent, and reacting.
9. 9. The method of preparing the modified microcapsule salt according to claim 6, comprising the steps of: (1) Mixing calcium salt and organic solvent, adding organic silicon compound and water, and reacting to obtain calcium salt coated with silicon dioxide; (2) And (3) carrying out plasma treatment on the calcium salt coated with the silicon dioxide to obtain the silicon dioxide.
10. 10. An apparatus for releasing negative oxygen ions comprising the composite material of any one of claims 1-5.

Description

Composite material for releasing negative oxygen ions as well as preparation method and application thereof Technical Field The invention belongs to the technical field of negative oxygen ion materials, and particularly relates to a composite material for releasing negative oxygen ions, and a preparation method and application thereof. Background The negative oxygen ion is used as oxygen molecules or oxygen atoms with negative charges, and plays an important role in improving air quality, promoting human health, inhibiting bacteria and mold growth and the like. A large number of researches show that the concentration of negative oxygen ions in the air is closely related to the comfort level of a human body, and the negative oxygen ions can regulate a nervous system, improve blood circulation and immunity and have wide health application prospect. At present, the negative oxygen ion generation method mainly comprises the following steps of 1) naturally releasing negative oxygen ions with a certain concentration in environments such as forests, waterfalls, seasides and the like due to the collision or illumination of water vapor. But this approach is limited by the natural environment and the concentration and persistence are not controllable. 2) Corona discharge or high-voltage ionization, which is to ionize air molecules by an external electric field to instantaneously generate high-concentration negative oxygen ions. However, the method has the disadvantages of complex equipment, high energy consumption, possibility of generating byproducts such as ozone and the like, and inconvenience for long-term use. 3) Functional material release in recent years, natural minerals such as tourmaline, radium stone and the like are widely used as negative oxygen ion release materials due to spontaneous polarization and piezoelectric effect thereof. Such materials can release negative oxygen ions at normal temperature, but their release amount is limited. Therefore, it is of great importance to provide a composite material with good negative oxygen ion release capability. Disclosure of Invention The present invention aims to solve one or more of the technical problems of the prior art described above, and at least provides an advantageous option. Specifically, the invention provides a composite material for releasing negative oxygen ions, which has good release amount and release stability of the negative oxygen ions. The invention discloses a preparation method of a composite material capable of releasing negative oxygen ions, which comprises the steps of preparing raw materials of polypropylene, modified titanium dioxide, modified cerium dioxide and modified microcapsule salt, wherein the modified titanium dioxide is obtained by sequentially adopting a coupling agent and plasma to treat titanium dioxide coated with silicon dioxide, the modified cerium dioxide is obtained by adopting the coupling agent to treat cerium dioxide, the cerium dioxide comprises cerium dioxide with oxygen vacancies, the modified microcapsule salt is obtained by adopting the plasma to treat microcapsule salt, the microcapsule salt has a core-shell structure, the core material of the core-shell structure comprises calcium salt, and the shell layer of the core-shell structure comprises silicon dioxide. The invention adopts the synergistic effect of the specific modified titanium dioxide, the modified cerium oxide and the modified microcapsule salt to form a continuous electron generation-transmission-migration passage, thereby realizing the high efficiency and the continuous release of negative oxygen ions. First, ceria in the modified ceria is ceria (CeO 2-x) containing oxygen vacancies. The existence of oxygen vacancies causes electron enrichment state to be formed in the crystal lattice, and active electrons can be released under the conditions of thermal disturbance or weak light. These electrons can combine with oxygen molecules in the air to form O 2-, which is the main electron source of negative oxygen ions in the system. However, electrons in ceria with a single oxygen-containing vacancy are liable to undergo rapid recombination, and the migration path is limited, so that sustained and stable release is difficult to achieve. And secondly, after SiO 2 coating, a coupling agent and plasma treatment, the surface of the modified titanium dioxide forms an activation layer rich in polar groups and surface defects. On one hand, the SiO 2 coating structure can inhibit the electron-hole recombination on the surface of TiO 2 and improve the electron life, and on the other hand, the surface defect and the polar functional group introduced by the plasma are beneficial to constructing an electron jump channel between the filler and the polymer matrix, so that the transfer of electrons between an inorganic phase and a polymer interface is promoted. The modified titanium dioxide mainly plays roles of electron transfer and amplification in a system, so t