CN-121991125-A - Bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions as well as preparation method and application thereof

CN121991125ACN 121991125 ACN121991125 ACN 121991125ACN-121991125-A

Abstract

The invention discloses a bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions, and a preparation method and application thereof, and belongs to the field of flame retardants. The preparation method comprises the steps of placing curcumin and diphenyl phosphine oxide into a three-necked flask, heating to a reaction temperature, starting stirring, adding triethylamine during stirring, reacting for 12 hours to obtain a first solution, carrying out suction filtration on the first solution, separating out solids in the solution to obtain a first filtrate, washing the solids with the first filtrate, carrying out suction filtration again after washing to obtain a second filtrate, mixing the first filtrate and the second filtrate, recrystallizing at room temperature, carrying out suction filtration again on the recrystallized mixture to obtain solid powder and a third filtrate, and washing the solid powder with the third filtrate to obtain the bio-based phosphorus-containing flame retardant. The bio-based phosphorus-containing flame retardant is synthesized by curcumin and diphenyl phosphine oxide, so that the flame retardance of a base material can be improved, the anti-aging capability is achieved, and the bio-based phosphorus-containing flame retardant is low in toxicity, low in taste and good in stability.

Inventors

CHENG GUIQING
DONG YANTING
HAN YUXI
WANG ZHONGWEI
YU QING
HOU JIJIN

Assignees

山东科技大学

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (9)

1. The preparation method of the bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions is characterized by comprising the following steps: S1, placing curcumin and diphenyl phosphine oxide into a three-necked flask, heating to a reaction temperature, starting stirring, adding triethylamine in the stirring process, and reacting for 12 hours to obtain a first solution; s2, carrying out suction filtration on the first solution, separating out solids in the solution to obtain a first filtrate, washing the solids with the first filtrate, and carrying out suction filtration again after washing to obtain a second filtrate; s3, mixing the first filtrate and the second filtrate, recrystallizing at room temperature, carrying out suction filtration on the recrystallized mixture again to obtain solid powder and third filtrate, and washing the solid powder by using the third filtrate to obtain the bio-based phosphorus-containing flame retardant.
2. The method for preparing the bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions according to claim 1, wherein the bio-based phosphorus-containing flame retardant is MDPC, and the molar ratio of curcumin, diphenyl phosphine oxide and triethylamine is 5:5:6.
3. The method for preparing the bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions according to claim 1, wherein the bio-based phosphorus-containing flame retardant is BDPC, and the molar ratio of curcumin, diphenyl phosphine oxide and triethylamine is 2:4:3.
4. The method for preparing the bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions according to claim 1, wherein the reaction temperature is 110-130 ℃.
5. The bio-based phosphorus-containing flame retardant prepared by the preparation method of the bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions as claimed in any one of claims 1 to 4, wherein the bio-based phosphorus-containing flame retardant has a compound with the following structure: Or (b) 。
6. Use of the bio-based phosphorus-containing flame retardant according to claim 5 in a polymeric material.
7. Use of the bio-based phosphorous flame retardant according to claim 6 in a polymeric material, wherein the polymeric material is a degradable plastic or a general purpose plastic.
8. Use of the bio-based phosphorous flame retardant according to claim 7 in degradable plastics, wherein the degradable plastics are polylactic acid and polyadipic acid.
9. Use of the bio-based phosphorous flame retardant according to claim 7 in general purpose plastics, which are epoxy resins, polyethylene terephthalate, polypropylene, polyethylene.

Description

Bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions as well as preparation method and application thereof Technical Field The invention relates to the technical field of polymers, in particular to a preparation method of a bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions and application of the bio-based phosphorus-containing flame retardant in a polymer material. Background The high polymer materials (degradable plastics such as polylactic acid (PLA), poly adipic acid (PBAT) and the like, epoxy resin (EP), polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) and other general plastics) are industrial core materials, but most of the natural flame retardance is poor, namely, although the PLA is environment-friendly, but has a large quantity of combustion heat release, fast flame propagation, the PBAT is easy to drip when being burnt, the EP and PET limiting oxygen indexes are only 20% -22%, and the PP and PE are as low as 17% -18%, so that the flame retardant requirements in the fields of electronics, automobiles, building materials and the like are difficult to meet. The existing phosphorus-containing flame retardant has single flame retardant function, and has higher addition amount, so that the mechanical property of a base material is easy to be attenuated, and the traditional physical compound system has the problems of poor component compatibility and easy loss of performance. Therefore, development of a multifunctional synergistic flame retardant which is environment-friendly, efficient and has flame retardant and antioxidant functions, and adaptation to the application requirements of various polymer materials has become an urgent problem in the industry. Traditional flame retardants (e.g., brominated and chlorinated) release toxic gases (e.g., dioxins) during combustion, which pose a threat to the environment and human health. In contrast, the bio-based material is more suitable for being combined with environment-friendly flame retardants (such as phosphorus-based, nitrogen-based and silicon-based) to realize the environment-friendly flame retardant effect. Disclosure of Invention The invention provides a bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions, and a preparation method and application thereof, and aims to solve the technical problems that the flame retardant in the prior art is difficult to simultaneously realize the flame retardant and antioxidant functions, raw materials are not green and environment-friendly, the mechanical properties and stability of a high polymer material are easy to influence after the raw materials are added, and the universality of a multi-class high polymer material is poor. In order to solve the technical problems, the invention provides the following technical scheme: a preparation method of a bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions comprises the following steps: S1, placing curcumin and diphenyl phosphine oxide into a three-necked flask, heating to a reaction temperature, starting stirring, adding triethylamine in the stirring process, and reacting for 12 hours to obtain a first solution; s2, carrying out suction filtration on the first solution, separating out solids in the solution to obtain a first filtrate, washing the solids with the first filtrate, and carrying out suction filtration again after washing to obtain a second filtrate; S3, mixing the first filtrate and the second filtrate, recrystallizing at room temperature, carrying out suction filtration on the recrystallized mixture again to obtain solid powder, obtaining third filtrate, and washing the solid powder by using the third filtrate to obtain the bio-based phosphorus-containing flame retardant. Further, the bio-based phosphorus-containing flame retardant is MDPC, and the molar ratio of curcumin, diphenyl phosphine oxide and triethylamine is 5:5:6. Further, the bio-based phosphorus-containing flame retardant is BDPC, and the molar ratio of curcumin, diphenyl phosphine oxide and triethylamine is 2:4:3. Further, the reaction temperature is 110 ℃ to 130 ℃. The invention also provides a bio-based phosphorus-containing flame retardant with flame retardant and antioxidant functions, and the bio-based phosphorus-containing flame retardant has the following structure: Or (b) 。 The invention also provides application of the bio-based phosphorus-containing flame retardant prepared by the preparation method in a high polymer material. Further, the polymer material is degradable plastic or general plastic. Further, the degradable plastic is polylactic acid and polyadipic acid. Further, the general plastic is epoxy resin, polyethylene terephthalate, polypropylene, polyethylene. Compared with the prior art, the invention has the beneficial effects that: (1) The invention adopts the bio-based phosphorus-