CN115521618A - Conductive wear-resistant polyphenylene sulfide material and preparation method thereof - Google Patents
Conductive wear-resistant polyphenylene sulfide material and preparation method thereof Download PDFInfo
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- CN115521618A CN115521618A CN202211285183.7A CN202211285183A CN115521618A CN 115521618 A CN115521618 A CN 115521618A CN 202211285183 A CN202211285183 A CN 202211285183A CN 115521618 A CN115521618 A CN 115521618A
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- polyphenylene sulfide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Abstract
The invention provides a conductive wear-resistant polyphenylene sulfide material, which belongs to the technical field of high polymer materials.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a conductive wear-resistant polyphenylene sulfide material and a preparation method thereof.
Background
Polyphenylene sulfide materials have high rigidity and strength over a wide temperature range, UL V-0 flame retardancy, excellent dimensional stability under a wide range of environmental conditions, chemical resistance inferior to that of fluororesin, good electrical conductivity at high temperature, high humidity and high frequency, and complicated high-precision molding possibility. These excellent conditions can meet the harsh application requirements of printers under high frequency and high voltage conditions. But the conventional reinforced modified polyphenylene sulfide material has the defects of poor conductivity, poor self-lubricating property, large friction coefficient, large abrasion and the like.
Disclosure of Invention
In view of the above, the present invention aims to provide a conductive wear-resistant polyphenylene sulfide material and a preparation method thereof, and the conductive wear-resistant polyphenylene sulfide material provided by the present invention has good wear resistance and electrical conductivity.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a conductive wear-resistant polyphenylene sulfide material which is prepared from the following raw materials in percentage by mass:
preferably, the chopped carbon fibers have a length of 5 to 7mm.
Preferably, the graphite is porous graphite, flake graphite or high-purity graphite.
Preferably, the lubricant is silicone powder or PETS.
Preferably, the antioxidant is pentaerythritol stearate, stearyl propionate, bis (3, 5-di-tert-butyl-4-hydroxy-phenylpropionyl) hydrazine or tris (2, 4-di-tert-butylphenyl) phosphite.
Preferably, the coupling agent is gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, or gamma-mercaptopropyltriethoxysilane.
The invention also provides a preparation method of the conductive wear-resistant polyphenylene sulfide material, which comprises the following preparation steps:
and sequentially carrying out melt blending and extrusion granulation on the linear polyphenylene sulfide resin, the chopped carbon fiber, the graphite, the polytetrafluoroethylene, the wear-resistant assistant, the lubricant, the antioxidant and the coupling agent in percentage by mass to obtain the conductive wear-resistant polyphenylene sulfide material.
The beneficial technical effects are as follows: the invention provides a conductive wear-resistant polyphenylene sulfide material, which is prepared by filling conductive material chopped carbon fibers and auxiliary additives such as graphite, a wear-resistant additive, polytetrafluoroethylene, a small amount of lubricant, an antioxidant, a coupling agent and the like into a linear polyphenylene sulfide resin serving as a matrix through a special extrusion process, and can be used for a heating pipe shaft sleeve of a laser printer.
Detailed Description
The invention provides a conductive wear-resistant polyphenylene sulfide material which is prepared from the following raw materials in percentage by mass:
the raw materials of the conductive wear-resistant polyphenylene sulfide material comprise 55-65% by mass of linear polyphenylene sulfide resin, and preferably 58-62% by mass of linear polyphenylene sulfide resin.
According to the mass percentage, the raw material of the conductive wear-resistant polyphenylene sulfide material comprises 10-20% of short carbon fiber, preferably 15-18%. In the present invention, the length of the chopped carbon fibers is 5 to 7mm. The chopped carbon fibers have the advantages of enhanced performance and conductive performance.
The raw material of the conductive wear-resistant polyphenylene sulfide material comprises, by mass, 5% -15% of graphite, and preferably 10% -12%. In the present invention, the graphite is preferably porous graphite, flaky graphite, or high-purity graphite. The graphite has the performances of high temperature resistance, corrosion resistance, electric conduction, heat conduction, lubrication and the like.
The raw material of the conductive wear-resistant polyphenylene sulfide material comprises, by mass, 5% -15% of polytetrafluoroethylene, and preferably 10% -12%. The polytetrafluoroethylene has the characteristics of high and low temperature resistance and corrosion resistance, and can reduce the friction coefficient of the polyphenylene sulfide material.
The raw materials of the conductive wear-resistant polyphenylene sulfide material comprise 0-5% of special wear-resistant auxiliary agent, preferably 2-5% by mass. The wear-resistant additive molybdenum disulfide or tungsten sulfide series wear-resistant additive has the characteristics of high temperature resistance and low wear, and effectively reduces the friction and wear of the polyphenylene sulfide material.
The raw material of the conductive wear-resistant polyphenylene sulfide material comprises, by mass, 0.2% -0.6% of a lubricant, and preferably 0.5%. In the present invention, the lubricant is preferably silicone powder or PETS. The lubricant disclosed by the invention can resist the high temperature of 320 ℃.
The raw materials of the conductive wear-resistant polyphenylene sulfide material comprise 0.2-0.6% of antioxidant, and preferably 0.5% of antioxidant. In the present invention, the antioxidant is preferably pentaerythritol stearate, stearyl propionate, bis (3, 5-di-t-butyl-4-hydroxy-phenylpropionyl) hydrazine or tris (2, 4-di-t-butylphenyl) phosphite, and more preferably pentaerythritol stearate.
The raw materials of the conductive wear-resistant polyphenylene sulfide material comprise 0.2-0.6% by mass of a coupling agent, and preferably 0.5% by mass of the coupling agent. In the present invention, the coupling agent is preferably gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, or gamma-mercaptopropyltriethoxysilane, and more preferably gamma-glycidoxypropyltrimethoxysilane.
The invention also provides a preparation method of the conductive wear-resistant polyphenylene sulfide material, which comprises the following preparation steps:
and sequentially carrying out melt blending and extrusion granulation on the linear polyphenylene sulfide resin, the chopped carbon fiber, the graphite, the polytetrafluoroethylene, the lubricant, the antioxidant and the coupling agent in percentage by mass to obtain the conductive wear-resistant polyphenylene sulfide material.
Specifically, linear polyphenylene sulfide resin, graphite, polytetrafluoroethylene, a wear-resistant auxiliary agent, a lubricant, an antioxidant and a coupling agent are mixed and then put into a main feed of an extruder, and chopped carbon fibers are put into a side feed of the extruder for melt blending and extrusion granulation.
In the present invention, the heating temperature of the extruder is preferably: the temperature of the first zone is 250-270 ℃, the temperature of the second zone is 280-300 ℃, the temperature of the third zone is 290-310 ℃, the temperature of the fourth zone is 310-330 ℃, the temperature of the fifth zone is 300-320 ℃, the temperature of the sixth zone is 300-320 ℃, the temperature of the seventh zone is 300-320 ℃, the temperature of the eighth zone is 290-310 ℃, the temperature of the ninth zone is 290-310 ℃, the temperature of the tenth zone is 290-310 ℃, the temperature of the eleventh zone is 290-310 ℃ and the temperature of the head is 310-330 ℃.
In the invention, the main machine rotating speed of the extruder is 500rpm, and the side feeding rotating speed is 50Hz.
The conductive wear-resistant polyphenylene sulfide material prepared by the invention can be used for a heating pipe shaft sleeve of a laser printer. In the invention, the material for the heating pipe shaft sleeve of the laser printer meets the following requirements:
the melting point is more than or equal to 280 ℃; the thermal deformation temperature is more than or equal to 200 ℃ (1.8 Mpa), and the linear expansion coefficient is less than or equal to 8 multiplied by 10 -5 The friction coefficient is less than or equal to 0.25; the wear resistance index is as follows: under the condition of 150N pressure, the supporting linear velocity is more than 200mm/s, the fire-proof grade is V0 grade, and the resistivity is less than 1.0 multiplied by 10 3 。
Example 1
Raw materials and mass percentage content:
1) Weighing the raw materials according to the mass ratio, and then uniformly premixing the linear PPS resin, the porous graphite, the PTFE micro powder, the wear-resistant auxiliary agent, the lubricant, the antioxidant and the coupling agent to obtain a mixture;
2) And (2) putting the mixture obtained in the step 1) into a main feed of an extruder, and putting the short carbon fibers into a side feed of the extruder for melt blending and extrusion granulation, so as to obtain the conductive wear-resistant polyphenylene sulfide material.
The heating temperature of the extruder in the step 2) is as follows: first zone 260 + -10 deg.C, second zone 290 + -10 deg.C, third zone 300 + -10 deg.C, fourth zone 320 + -10 deg.C, fifth zone 310 + -10 deg.C, sixth zone 310 + -10 deg.C, seventh zone 310 + -10 deg.C, eighth zone 300 + -10 deg.C, ninth zone 300 + -10 deg.C, tenth zone 300 + -10 deg.C, eleventh zone 300 + -10 deg.C and head 320 + -10 deg.C. The rotating speed of the main machine is as follows: 500rpm; side feeding rotating speed: 50Hz.
TABLE 1 relevant Properties of the electrically conductive, abrasion-resistant polyphenylene sulfide material obtained in example 1
As can be seen from Table 1, the friction coefficient of the conductive wear-resistant polyphenylene sulfide material prepared in example 1 is less than 2.0, the wear rate is only 0.001mg/120min, the thermal deformation (HDT) temperature reaches above 260 ℃, and the conductive wear-resistant polyphenylene sulfide material has the characteristics of high temperature resistance, low friction coefficient, low wear and the like, meets the requirements of a heating pipe shaft sleeve of a laser printer, and has the resistance of less than 100M ohm under the conditions of 180 ℃ and 120 minutes.
Example 2
Raw materials and mass percentage content:
1) Weighing the raw materials according to the mass ratio, and then uniformly premixing the linear PPS resin, the porous graphite, the PTFE micro powder, the lubricant, the antioxidant and the coupling agent to obtain a mixture;
2) And (2) putting the mixture obtained in the step 1) into a main feed of an extruder, and putting the short carbon fibers into a side feed of the extruder for melt blending and extrusion granulation, so as to obtain the conductive wear-resistant polyphenylene sulfide material.
The heating temperature of the extruder in the step 2) is as follows: first zone 260 + -10 deg.C, second zone 290 + -10 deg.C, third zone 300 + -10 deg.C, fourth zone 320 + -10 deg.C, fifth zone 310 + -10 deg.C, sixth zone 310 + -10 deg.C, seventh zone 310 + -10 deg.C, eighth zone 300 + -10 deg.C, ninth zone 300 + -10 deg.C, tenth zone 300 + -10 deg.C, eleventh zone 300 + -10 deg.C and head 320 + -10 deg.C. The rotating speed of the main machine is as follows: 500rpm; side feeding rotating speed: 50Hz.
Table 2 relevant properties of the electrically conductive and wear resistant polyphenylene sulfide material obtained in example 2
Example 3
Raw materials and mass percentage content:
1) Weighing the raw materials according to the mass ratio, and then uniformly premixing the linear PPS resin, the porous graphite, the PTFE micro powder, the lubricant, the antioxidant and the coupling agent to obtain a mixture;
2) And (2) putting the mixture obtained in the step 1) into a main feed of an extruder, and putting the chopped carbon fibers into a side feed of the extruder for melt blending and extrusion granulation to obtain the conductive wear-resistant polyphenylene sulfide material.
The heating temperature of the extruder in the step 2) is as follows: first zone 260 + -10 deg.C, second zone 290 + -10 deg.C, third zone 300 + -10 deg.C, fourth zone 320 + -10 deg.C, fifth zone 310 + -10 deg.C, sixth zone 310 + -10 deg.C, seventh zone 310 + -10 deg.C, eighth zone 300 + -10 deg.C, ninth zone 300 + -10 deg.C, tenth zone 300 + -10 deg.C, eleventh zone 300 + -10 deg.C and head 320 + -10 deg.C. The rotating speed of the main machine is as follows: 500rpm; side feeding rotating speed: 50Hz.
TABLE 3 relevant Properties of the electrically conductive, abrasion-resistant polyphenylene sulfide material obtained in example 3
Comparative example 1
Raw materials and mass percentage content:
1) Weighing the raw materials according to the mass ratio, and then uniformly premixing the linear PPS resin, the porous graphite, the PTFE micro powder, the wear-resistant auxiliary agent, the lubricant, the antioxidant and the coupling agent to obtain a mixture;
2) And (2) putting the mixture obtained in the step 1) into a main feed of an extruder, and putting the chopped glass fiber into a side feed of the extruder for melt blending and extrusion granulation, so as to obtain the conductive wear-resistant polyphenylene sulfide material.
The heating temperature of the extruder in the step 2) is as follows: first zone 260 + -10 deg.C, second zone 290 + -10 deg.C, third zone 300 + -10 deg.C, fourth zone 320 + -10 deg.C, fifth zone 310 + -10 deg.C, sixth zone 310 + -10 deg.C, seventh zone 310 + -10 deg.C, eighth zone 300 + -10 deg.C, ninth zone 300 + -10 deg.C, tenth zone 300 + -10 deg.C, eleventh zone 300 + -10 deg.C and head 320 + -10 deg.C. The rotating speed of the main engine is as follows: 500rpm; side feeding rotating speed: 50Hz.
Table 4 relevant properties of the electrically conductive and wear resistant polyphenylene sulfide material obtained in comparative example 1
Comparative example 2
Raw materials and mass percentage content:
1) Weighing the raw materials according to the mass ratio, and then uniformly premixing the linear PPS resin, the porous graphite, the PTFE micro powder, the lubricant, the antioxidant and the coupling agent to obtain a mixture;
2) And (2) putting the mixture obtained in the step 1) into a main feed of an extruder, and putting the chopped glass fiber into a side feed of the extruder for melt blending and extrusion granulation, so as to obtain the conductive wear-resistant polyphenylene sulfide material.
The heating temperature of the extruder in the step 2) is as follows: first zone 260 + -10 deg.C, second zone 290 + -10 deg.C, third zone 300 + -10 deg.C, fourth zone 320 + -10 deg.C, fifth zone 310 + -10 deg.C, sixth zone 310 + -10 deg.C, seventh zone 310 + -10 deg.C, eighth zone 300 + -10 deg.C, ninth zone 300 + -10 deg.C, tenth zone 300 + -10 deg.C, eleventh zone 300 + -10 deg.C and head 320 + -10 deg.C. The rotating speed of the main machine is as follows: 500rpm; side feeding rotating speed: 50Hz.
TABLE 5 relative properties of the conductive wear-resistant polyphenylene sulfide material obtained in comparative example 2
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (8)
1. The conductive wear-resistant polyphenylene sulfide material is characterized by being prepared from the following raw materials in percentage by mass:
2. the electrically conductive and wear resistant polyphenylene sulfide material of claim 1, wherein the chopped carbon fibers have a length of 5 to 7mm.
3. The electrically conductive, wear-resistant polyphenylene sulfide material of claim 1, wherein the graphite is porous graphite, flake graphite, or high purity graphite.
4. The electrically conductive and wear resistant polyphenylene sulfide material of claim 1, wherein the lubricant is silicone powder or PETS.
5. The electrically conductive and wear resistant polyphenylene sulfide material of claim 1, wherein the antioxidant is pentaerythritol stearate, stearyl propionate, bis (3, 5-di-t-butyl-4-hydroxy-phenylpropionyl) hydrazine, or tris (2, 4-di-t-butylphenyl) phosphite.
6. The conductive wear-resistant polyphenylene sulfide material as claimed in claim 1, wherein the wear-resistant additive is molybdenum disulfide or tungsten sulfide.
7. The electrically conductive and wear resistant polyphenylene sulfide material of claim 1, wherein the coupling agent is gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, or gamma-mercaptopropyltriethoxysilane.
8. The preparation method of the conductive wear-resistant polyphenylene sulfide material as claimed in any one of claims 1 to 7, characterized by comprising the following preparation steps:
and sequentially carrying out melt blending and extrusion granulation on the linear polyphenylene sulfide resin, the chopped carbon fiber, the graphite, the polytetrafluoroethylene, the wear-resistant auxiliary agent, the lubricant, the antioxidant and the coupling agent in percentage by mass to obtain the conductive wear-resistant polyphenylene sulfide material.
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| CN113025039A (en) * | 2020-12-11 | 2021-06-25 | 浙江新和成特种材料有限公司 | Polyphenylene sulfide composite material and preparation method thereof |
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- 2022-10-20 CN CN202211285183.7A patent/CN115521618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104177829A (en) * | 2014-09-02 | 2014-12-03 | 山东赛恩吉新材料有限公司 | Toughened wear-resistant composite material and preparation method thereof |
| CN106084778A (en) * | 2016-06-29 | 2016-11-09 | 广州市聚赛龙工程塑料股份有限公司 | A kind of heat conduction wear-resisting high-strength degree polyphenyl thioether composite material and preparation method thereof |
| CN106380846A (en) * | 2016-08-30 | 2017-02-08 | 聚威工程塑料(上海)有限公司 | Wear-resistant low-floating fiber glass fiber-reinforced polyphenylene sulfide composite material and preparation method thereof |
| CN107746574A (en) * | 2017-11-15 | 2018-03-02 | 上海锦湖日丽塑料有限公司 | A kind of wear-resisting low floating fine fiberglass reinforced polyphenylene sulfide exempts from spraying composite material and preparation method thereof |
| CN113025039A (en) * | 2020-12-11 | 2021-06-25 | 浙江新和成特种材料有限公司 | Polyphenylene sulfide composite material and preparation method thereof |
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