CN-122011725-A - Phenolphthalein polyaryletherketone nanocomposite and preparation method thereof

CN122011725ACN 122011725 ACN122011725 ACN 122011725ACN-122011725-A

Abstract

The invention discloses a phenolphthalein polyaryletherketone nanocomposite and a preparation method thereof, wherein the nanocomposite comprises, by mass, 50-70% of a phenolphthalein polyaryletherketone (PEK-C) matrix, 10-30% of a nanofiller, 5-15% of a toughening agent, wt% of an antioxidant, 1-5% of a processing aid and 1-3% of a processing aid, wherein the components are physically mixed to form a uniformly dispersed integral structure, and the nanocomposite comprises the following steps of S1 premixing the phenolphthalein polyaryletherketone matrix and the nanofiller in a high-speed mixer, S2 adding the premixed materials into a double-screw extruder for melt blending, S3 adding the toughening agent, the antioxidant and the processing aid in the extrusion process, continuing mixing, and S4 cooling and granulating the extruded materials to obtain nanocomposite particles. The invention belongs to the field of high polymer materials, and particularly relates to a phenolphthalein polyaryletherketone nanocomposite and a preparation method thereof.

Inventors

YUAN JIARUI
WANG HENGXUAN
CUI YANG
LUO ZHENGGANG

Assignees

徐州工业职业技术学院

Dates

Publication Date: 20260512
Application Date: 20260303

Claims (6)

1. A phenolphthalein polyaryletherketone nanocomposite is characterized by comprising, by mass, 50-70% of a phenolphthalein Polyaryletherketone (PEK) matrix, 10-30% of a nanofiller, 3-30% of a toughening agent, 5-15% of an antioxidant, 1-5% of a wt% of a processing aid and 1-3% of a processing aid, wherein the components are physically mixed to form a uniformly dispersed integral structure.
2. The phenolphthalein polyaryletherketone nanocomposite as set forth in claim 1, wherein the nanofiller species includes, but is not limited to, one or more of nanosilicon dioxide, nanosilicon alumina, carbon nanotubes, and graphene, and the size range is recommended to be controlled between 1nm and 100 nm.
3. A phenolphthalein polyaryletherketone nanocomposite as set forth in claim 2, wherein the toughening agent comprises one or more of Polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), or polyphenylene sulfide (PPS).
4. A phenolphthalein polyaryletherketone nanocomposite as set forth in claim 3 wherein said antioxidant species comprises, but is not limited to, one or more of triphenyl phosphite, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
5. A phenolphthalein polyaryletherketone nanocomposite as set forth in claim 4, wherein said processing aid comprises one or more of, but not limited to, calcium stearate, zinc stearate, or silicone oil.
6. The method for preparing the phenolphthalein polyaryletherketone nanocomposite according to claims 1 to 5, comprising the steps of: s1, premixing a phenolphthalein polyaryletherketone matrix and nano-filler in a high-speed mixer; s2, adding the premixed materials into a double-screw extruder for melt blending; s3, adding a toughening agent, an antioxidant and a processing aid in the extrusion process, and continuously mixing; S4, cooling and granulating the extruded material to obtain nano composite material particles.

Description

Phenolphthalein polyaryletherketone nanocomposite and preparation method thereof Technical Field The invention belongs to the field of high polymer materials, and particularly relates to a phenolphthalein polyaryletherketone nanocomposite and a preparation method thereof. Background The phenolphthalein polyaryletherketone (PEK-C) is a high-performance engineering plastic, has excellent heat resistance, chemical corrosion resistance and mechanical property, and is widely applied to the fields of automobiles, electronic appliances, aerospace and the like. However, pure PEK-C materials have poor toughness, limiting their application in certain high stress environments. To improve the toughness of PEK-C, it is often necessary to add toughening agents and nanofillers to increase its overall performance. The primary means currently employed to enhance the performance of engineering plastics include the addition of common inorganic fillers or a single toughening agent to enhance certain specific aspects of the properties. For example, glass fibers can significantly improve tensile modulus but reduce impact strength, while rubber-like materials, while effective in improving toughness, tend to result in reduced stiffness and are difficult to address other multiple attribute balance point control issues. In addition, several common treatment methods such as a copolymerization doping method and a surface grafting modification method are also widely explored and practiced, and the common treatment methods respectively have unique advantages and also have obvious defects, the former has high cost and high process complexity, and are not beneficial to large-scale industrialized production popularization, and the latter often cannot realize the long-term stability guarantee target due to weak interface binding force. In general, these conventional improvements generally suffer from inefficiency or poor compatibility. Disclosure of Invention The invention aims to solve the technical problems of low efficiency or poor compatibility of nano-filler in the prior art. The invention aims to solve the problems, and adopts the technical scheme that the phenolphthalein polyaryletherketone nanocomposite and the preparation method thereof comprise, by mass, 50-70% of a phenolphthalein polyaryletherketone (PEK-C) matrix, 10-30% of a nanofiller, 5-15% wt% of a toughening agent, 1-5% wt% of an antioxidant and 1-3% wt% of a processing aid, wherein the components are physically mixed to form a uniformly dispersed integral structure. Further, the nano-filler comprises one or more of nano-silica, nano-alumina, carbon nano-tube and graphene, and the size range is recommended to be controlled between 1nm and 100 nm. Further, the toughening agent species include, but are not limited to, one or more of Polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK) or polyphenylene sulfide (PPS). Further, the antioxidant species include, but are not limited to, one or more of triphenyl phosphite, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]. Further, the processing aid classes include, but are not limited to, one or more of calcium stearate, zinc stearate, or silicone oil. Further, the preparation method comprises the following steps: s1, premixing a phenolphthalein polyaryletherketone matrix and nano-filler in a high-speed mixer; s2, adding the premixed materials into a double-screw extruder for melt blending; s3, adding a toughening agent, an antioxidant and a processing aid in the extrusion process, and continuously mixing; S4, cooling and granulating the extruded material to obtain nano composite material particles. The beneficial effects obtained by the invention by adopting the structure are as follows: According to the phenolphthalein polyaryletherketone nanocomposite and the preparation method thereof, the problems of uneven dispersion and poor interfacial compatibility of nanofillers in the prior art are solved by optimizing the material proportion and the preparation process, the nanocomposite with excellent mechanical properties, thermal stability and processability is obtained, and the proportion relation of each component is accurately regulated so that the produced product shows extremely excellent mechanical strength, particularly the bending fracture load value is far more than the average level of similar competitive products, and is close to the doubling length. Drawings FIG. 1 is a flow chart of the preparation process of the invention. The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. Detailed Description The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodime