CN-121991483-A - Preparation method of recyclable phenolphthalein polyaryletherketone composite material

Abstract

The invention discloses a preparation method of a recyclable phenolphthalein polyaryletherketone composite material, which comprises the steps of selecting 65% of phenolphthalein polyaryletherketone resin (PEK-C) as a matrix material, selecting 15% of carbon fiber, 10% of glass fiber, 8% of ceramic particles and 2% of metal powder as a reinforcing material, uniformly mixing the matrix material and the reinforcing material to ensure that the matrix material can completely permeate into the reinforcing material to form a stable composite material, and adding a recycling agent into the mixed composite material when uniformly mixing the matrix material and the reinforcing material, so that the viscosity of the resin can be effectively reduced in the recycling process of the composite material, and the resin is promoted to be degraded into smaller molecular units so as to promote the degradation of the resin. The invention relates to the technical field of processing of polymer composite materials, and the composite material can conveniently carry out recovery treatment while ensuring excellent physical and chemical properties, thereby reducing environmental pollution and providing a new way for realizing sustainable utilization of resources.

Inventors

• YUAN JIARUI
• WANG HENGXUAN
• CUI YANG
• LUO ZHENGGANG

Assignees

• 徐州工业职业技术学院

Dates

Publication Date

20260508

Application Date

20260306

Claims (5)

1. 1. A preparation method of a recyclable phenolphthalein polyaryletherketone composite material is characterized by comprising the following steps of, Step one: 1. Selecting 65% of phenolphthalein polyaryletherketone resin (PEK-C) as a matrix material; 2. 15% of carbon fiber, 10% of glass fiber, 8% of ceramic particles and 2% of metal powder are selected as reinforcing materials; 3. and uniformly mixing the matrix material and the reinforcing material to ensure that the matrix material can completely permeate into the reinforcing material to form a stable composite material. Step two: 1. When the matrix material and the reinforcing material are uniformly mixed, a recycling agent is selected and added into the mixed composite material, so that the viscosity of the resin can be effectively reduced in the recycling process of the composite material, and the degradation of the resin into smaller molecular units is promoted to promote the degradation of the resin; 2. The mass ratio of the recycling agent is 1 percent, so that the material can be quickly decomposed in the pyrolysis or solvent recycling process, and the separation of the reinforced fibers and the reprocessing of the material are facilitated. Step three: The mixed composite material is processed into the required shape and size by different shaping methods: 1. placing the mixed composite material in a mould, and forming the composite material under the action of heating and pressure to obtain the composite material with excellent mechanical property and thermal stability; 2. Heating the mixed composite material to a proper temperature, injecting the composite material into a mold, and forming the composite material into a required product shape through injection molding; 3. The composite material is stretched by a pultrusion machine and is formed by pultrusion for continuous production of large-sized composite material products.
2. 2. The method for preparing the recyclable phenolphthalein polyaryletherketone composite material as set forth in claim 1, wherein the recycling agent is phenol, bromide solvent or dimethyl nitrosamine (DMA) for helping the resin to depolymerize, degrade and separate the reinforcing fibers.
3. 3. The method for preparing the recyclable phenolphthalein polyaryletherketone composite material as set forth in claim 1, wherein the carbon fiber is T300 or T800 with high strength and rigidity requirements.
4. 4. The method for preparing the recyclable phenolphthalein polyaryletherketone composite material as set forth in claim 1, wherein the ceramic particles are silicon nitride and aluminum oxide for increasing the high temperature resistance and the wear resistance of the material.
5. 5. The method for preparing the recyclable phenolphthalein polyaryletherketone composite material as set forth in claim 1, wherein the metal powder is aluminum powder or copper powder for improving thermal conductivity or electrical conductivity of the material.

Description

Preparation method of recyclable phenolphthalein polyaryletherketone composite material Technical Field The invention relates to the technical field of polymer composite material processing, in particular to a preparation method of a recyclable phenolphthalein polyaryletherketone composite material. Background As a high-performance engineering plastic, the poly (arylene ether ketone) (PEEK) has excellent mechanical strength, heat resistance, corrosion resistance, low friction coefficient and good electrical insulation property, and is widely applied to the fields of high technologies such as aviation, aerospace, automobiles, electronics and the like. Although PEEK material has excellent performance, the existing poly (arylene ether ketone) composite material is difficult to recover and reuse after use, so that the waste treatment pressure is increased, and the burden on the environment is easily caused. Therefore, in order to reduce environmental burden and promote sustainable utilization of materials, development of a phenolphthalein polyaryletherketone composite material with recyclability is needed, so that high performance of the composite material in mechanical, thermal, electrical and other aspects can be ensured, and recyclability of the material can be realized, thereby effectively reducing environmental pollution. Disclosure of Invention Aiming at the situation, in order to make up the existing defects, the invention provides a preparation method of a recyclable phenolphthalein polyaryletherketone composite material, which ensures excellent physical and chemical properties, can be conveniently recycled, reduces environmental pollution and provides a new way for realizing sustainable utilization of resources. The technical scheme of the invention is as follows, the preparation method of the recyclable phenolphthalein polyaryletherketone composite material provided by the scheme comprises the following steps: Step one: 1. Selecting 65% of phenolphthalein polyaryletherketone resin (PEK-C) as a matrix material; 2. 15% of carbon fiber, 10% of glass fiber, 8% of ceramic particles and 2% of metal powder are selected as reinforcing materials; 3. and uniformly mixing the matrix material and the reinforcing material to ensure that the matrix material can completely permeate into the reinforcing material to form a stable composite material. Step two: When the matrix material and the reinforcing material are uniformly mixed, the recycling agent is selected and added into the mixed composite material, so that the viscosity of the resin can be effectively reduced in the recycling process of the composite material, the resin is promoted to be degraded into smaller molecular units so as to promote the degradation of the resin, wherein the mass ratio of the recycling agent is1 percent, the material can be ensured to be rapidly decomposed in the pyrolysis or solvent recycling process, and the separation of the reinforcing fiber and the reprocessing of the material are facilitated. Step three: The mixed composite material is processed into the required shape and size by different shaping methods: 1. And placing the mixed composite material in a mould, and forming the composite material under the action of heating and pressure to obtain the composite material with excellent mechanical property and thermal stability. 2. After the mixed composite material is heated to a proper temperature, the composite material is injected into a mold, and is formed into a required product shape through injection molding. 3. The composite material is stretched by a pultrusion machine and is formed by pultrusion for continuous production of large-sized composite material products. Preferably, the recycling agent is phenol, bromide solvent or dimethyl nitrosamine (DMA) to aid in resin depolymerization, degradation and separation of the reinforcing fibers. Preferably, the carbon fiber is selected from T300 or T800 with high strength and rigidity requirements. Preferably, the ceramic particles are silicon nitride and aluminum oxide, so as to increase the high temperature resistance and wear resistance of the material. Preferably, the metal powder is aluminum powder or copper powder, and is used for improving the thermal conductivity or electrical conductivity of the material. The beneficial effects obtained by the invention by adopting the structure are as follows: 1. According to the invention, by introducing the recycling agent, such as dimethyl nitrosamine, phenol and bromide solvent, the viscosity of the resin is effectively reduced, and the resin is promoted to be degraded into smaller molecular units, so that the composite material can be rapidly degraded in the recycling process, and the reinforced fiber is easier to separate from the resin, thereby improving the recycling property of the material and reducing the negative influence on the environment. 2. The reinforcing material in the composite material, such as carbon fiber, glas