CN113372692A - Polyester composite material and flexible cover sheet base material - Google Patents
Polyester composite material and flexible cover sheet base material Download PDFInfo
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- CN113372692A CN113372692A CN202110701360.4A CN202110701360A CN113372692A CN 113372692 A CN113372692 A CN 113372692A CN 202110701360 A CN202110701360 A CN 202110701360A CN 113372692 A CN113372692 A CN 113372692A
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The invention provides a polyester composite material, which comprises 60-70% by mass of polyester resin master batch, 20-30% by mass of blend, 1-5% by mass of reinforcing agent, 1-5% by mass of compatilizer and 0.1-2% by mass of stabilizer, wherein the polyester composite material is prepared by mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer. The invention also provides a flexible cover plate base material. The polyester composite material provided by the invention has the advantages of high strength, high toughness and excellent dielectric property, is simple to manufacture, low in price, high in yield, strong in plasticity and capable of realizing industrial mass production.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a polyester composite material and a flexible cover plate base material.
Background
The engineering plastic of poly (1, 4-cyclohexanedimethanol terephthalate) (PCT for short) is a new type of industrial polyester engineering plastic, it is a third type of thermoplastic polyester following PET (polyethylene terephthalate) and PBT (polybutylene terephthalate), its characteristics centralize the advantages of two types of crystal polyesters of PBT and PET, not only possesses the strength and mechanical property of PBT, but also its heat resistance is superior to that of PET, so that it is the best thermoplastic polyester material for existent heat resistance.
PCT is mainly used for high-temperature resistant materials, and particularly applied to high-temperature resistant electronic materials, which cannot be replaced by PBT and PET. With the development of the electronic industry, especially the updating of the surface mounting technology, the performance requirements for electronic materials are higher and higher, and new materials gradually replace the traditional electronic materials to ensure the performance and quality of electronic products. PCT is a good material used as an electronic device, the dielectric property of the PCT can be improved by blending, and the technical problems related to high-frequency transmission, such as high-frequency path loss, transmission loss, wall-through property, efficiency, power consumption and the like, can be hopefully solved, so that the requirements of high-frequency and high-speed signal transmission of 5G mobile communication, Internet of things, artificial intelligence, automatic driving and the like are met.
However, the strength and toughness of the currently produced polyester composite material cannot be considered at the same time, the dielectric property cannot meet the requirements, the toughness of the polyester composite material with high strength is poor, and the strength of the polyester composite material with good toughness is poor. In many application scenarios, the polyester composite material needs to have both good strength and toughness to meet the use standard. For example, the toughness of the existing partial polyester composite material is good, but the strength is less than 65MPa, and the strength required by partial use scenes is more than 80MPa, so that the strength of the polyester composite material does not meet the requirement. Therefore, there is a need for an improvement of the conventional polyester composite material to obtain a polyester composite material having high strength, high toughness and excellent dielectric properties.
Disclosure of Invention
The invention aims to provide a polyester composite material, which aims to overcome the defects in the prior art, has the advantages of high strength, high toughness and excellent dielectric property, is simple to manufacture, low in price and high in yield, has strong plasticity and can realize industrial mass production.
The invention provides a polyester composite material, which comprises 60-70% by mass of polyester resin master batch, 20-30% by mass of blend, 1-5% by mass of reinforcing agent, 1-5% by mass of compatilizer and 0.1-2% by mass of stabilizer, wherein the polyester composite material is prepared by mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer.
Further, the polyester resin master batch is one or a combination of more of poly 1, 4-cyclohexanedimethanol terephthalate, polyethylene terephthalate or polybutylene terephthalate.
Further, the blend is one or the combination of polyphenylene oxide and polylactic acid.
Further, the compatilizer is one or a combination of two of styrene-maleic anhydride copolymer and maleic anhydride.
Further, the reinforcing agent is one or more of attapulgite, glass fiber, carbon fiber, boron nitride or silicon carbide.
Further, the stabilizer is one or a combination of more of benzophenone compounds, hindered phenol compounds and phosphite compounds.
Further, the preparation method of the polyester composite material comprises the following steps:
weighing a certain amount of the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer in proportion, and placing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer in a vacuum drying oven for drying for a period of time, wherein the temperature in the vacuum drying oven is a first temperature; after the drying is finished, stirring and uniformly mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer by a stirrer to obtain a mixture;
adding the mixture into an extruder, and performing extrusion granulation on the mixture at a second temperature to obtain mixture particles; after the extrusion is finished, injection molding the mixture particles at a third temperature to form a thin plate; and after the injection molding is finished, annealing the thin plate at a fourth temperature for a period of time to obtain the polyester composite material.
Further, the polyester resin master batch, the blend, the reinforcing agent, the compatibilizer and the stabilizer are dried in the vacuum drying oven at a temperature of 50-70 ℃ for 0.5-1.5 hours, and the sheet is annealed at a temperature of 150-170 ℃ for 0.5-1.5 hours.
Further, the second temperature is 230 ℃ to 300 ℃, and the third temperature is 70 ℃ to 90 ℃.
The invention also provides a flexible cover plate base material which is made of the polyester composite material.
The polyester composite material provided by the invention takes the polyester resin master batch as a main raw material, and the polyester resin master batch can provide a good strength and toughness foundation. The blend can improve the dielectric property of the polyester composite material, so that the lowest dielectric constant of the polyester composite material can reach 2.6. The reinforcing agent can improve the tensile property of the polyester composite material, so that the strength of the polyester composite material is further improved. The stabilizer can improve the thermal stability and the thermal expansion coefficient of the polyester composite material after injection molding. The compatilizer can uniformly mix and combine all parts of the polyester resin master batch, the blend, the reinforcing agent and the stabilizer into a whole, so that respective performances can be exerted, namely the polyester composite material has the characteristics of the polyester resin master batch, the blend, the reinforcing agent and the stabilizer.
The polyester composite material provided by the invention has the advantages of high strength, high toughness, excellent dielectric property and good thermal stability, is simple to manufacture, low in price and high in yield, can flexibly control the addition proportion of raw materials of each part according to actual requirements to obtain the polyester composite materials with different properties, has very strong plasticity, and can realize industrial mass production.
Drawings
FIG. 1 is a schematic view showing a process for producing a polyester composite material according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms of orientation, up, down, left, right, front, back, top, bottom, and the like (if any) referred to in the specification and claims of the present invention are defined by the positions of structures in the drawings and the positions of the structures relative to each other, only for the sake of clarity and convenience in describing the technical solutions. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The polyester composite material provided by the embodiment of the invention comprises polyester resin master batch, a blend, a reinforcing agent, a compatilizer and a stabilizer. Wherein the mass fraction of the polyester resin master batch is 60-70%, the mass fraction of the blend is 20-30%, the mass fraction of the reinforcing agent is 1-5%, the mass fraction of the compatilizer is 1-5%, the mass fraction of the stabilizer is 0.1-2%, and the polyester composite material is prepared by mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer.
Specifically, the polyester composite material takes a polyester resin master batch as a main raw material, and the polyester resin master batch can provide a good strength and toughness foundation. The blend can improve the dielectric property of the polyester composite material, so that the minimum dielectric constant of the polyester composite material can reach 2.6 (the blend has certain influence on the strength and toughness of the polyester composite material, so the content of the blend needs to be controlled). The reinforcing agent can improve the tensile property of the polyester composite material, so that the strength of the polyester composite material is further improved, and the polyester composite material has good compression resistance and impact resistance. The stabilizer can improve the thermal stability and the thermal expansion coefficient of the polyester composite material after injection molding, so that the polyester composite material has good thermal stability. The compatilizer can uniformly mix and combine all parts of the polyester resin master batch, the blend, the reinforcing agent and the stabilizer into a whole, so that respective performances can be exerted, namely the polyester composite material has the characteristics of the polyester resin master batch, the blend, the reinforcing agent and the stabilizer.
Further, in this embodiment, the polyester resin masterbatch is one or a combination of more of poly 1, 4-cyclohexanedimethanol terephthalate (PCT), polyethylene terephthalate (PET), or polybutylene terephthalate (PBT).
Preferably, the polyester resin masterbatch is poly 1, 4-cyclohexanedimethanol terephthalate (PCT). PCT not only has the strength and mechanical properties of PBT, but also has better heat resistance than PET, and is the thermoplastic polyester material with the best heat resistance at present.
Further, in this example, the blend is one or a combination of two of polyphenylene oxide (PPO) or polylactic acid (PLA). Of course, in other embodiments, other materials may be used for the blend.
Further, in this embodiment, the compatibilizer is one or a combination of styrene-maleic anhydride copolymer (SMA) or Maleic Anhydride (MAH). Of course, in other embodiments, other materials may be used for the compatibilizing agent.
Further, in this embodiment, the reinforcing agent is one or a combination of attapulgite, glass fiber, carbon fiber, boron nitride, or silicon carbide. Of course, in other embodiments, other materials may be used for the reinforcing agent.
Further, in this embodiment, the stabilizer is one or a combination of more of benzophenone compounds, hindered phenol compounds, and phosphite compounds. Of course, in other embodiments, other materials may be used for the stabilizer.
Further, as shown in fig. 1, in the present embodiment, the method for manufacturing the polyester composite material includes:
weighing a certain amount of polyester resin master batch, a blend, a reinforcing agent, a compatilizer and a stabilizing agent in proportion, and placing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizing agent in a vacuum drying oven for drying for a period of time, wherein the temperature in the vacuum drying oven is a first temperature; after drying, stirring and uniformly mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer by a stirrer to obtain a mixture;
adding the mixture into an extruder, and performing extrusion granulation on the mixture at a second temperature to obtain mixture particles; after the extrusion is finished, injection molding the mixture particles at a third temperature to form a thin plate; and after the injection molding is finished, annealing the thin plate at a fourth temperature for a period of time to obtain the polyester composite material.
In the embodiment, the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer are dried in a vacuum drying oven at a temperature of 50 ℃ to 70 ℃ for 0.5 hour to 1.5 hours, namely, the first temperature is 50 ℃ to 70 ℃.
In this embodiment, the second temperature is 230 ℃ to 300 ℃.
In the present embodiment, the third temperature is 70 ℃ to 90 ℃, and preferably 80 ℃.
In this embodiment, the sheet is annealed at 150 to 170 ℃ for 0.5 to 1.5 hours, that is, the fourth temperature is 150 to 170 ℃.
The embodiment of the invention also provides a flexible clad plate base material, which is made of the polyester composite material and can be used for manufacturing a flexible circuit board copper clad plate.
The polyester composite material provided in this example has the following advantages:
1. the polyester resin master batch is used as a main raw material, and can provide a good strength and toughness foundation. The blend can improve the dielectric property of the polyester composite material, so that the lowest dielectric constant of the polyester composite material can reach 2.6. The reinforcing agent can improve the tensile property of the polyester composite material, so that the strength of the polyester composite material is further improved. The stabilizer can improve the thermal stability and the thermal expansion coefficient of the polyester composite material after injection molding. Therefore, the polyester composite material has the advantages of high strength, high toughness, excellent dielectric property and good thermal stability, and can be suitable for various use occasions;
2. the polyester composite material has the advantages of simple manufacturing process, low requirement on equipment, low price, high yield and capability of realizing industrial mass production;
3. the polyester composite material has strong plasticity, and the addition proportion of the raw materials of each part can be flexibly controlled according to actual requirements so as to obtain the polyester composite materials with different properties;
4. this polyester composite's processing mobility is good, because there is certain overlapping in the processing temperature region of polyester resin masterbatch and compounding, when this temperature overlap region processing forms polyester composite, polyester resin masterbatch and compounding all have good mobility, have reduced the stickness of polyester composite during processing for polyester composite extrudes and injection moulding more easily.
The polyester composite material provided by the embodiment of the invention has the advantages of high strength, high toughness, excellent dielectric property and good thermal stability, is simple to manufacture, good in processing fluidity, low in price and high in yield, can flexibly control the addition proportion of raw materials of each part according to actual requirements to obtain the polyester composite materials with different properties, has very strong plasticity, and can realize industrial mass production.
Example one:
respectively weighing 700g, 300g, 30g, 20g and 10g of PCT, PLA, glass fiber powder, maleic anhydride and benzophenone compounds, drying the PCT, PLA, glass fiber powder, maleic anhydride and benzophenone compounds in a vacuum dryer, and stirring by a stirrer to uniformly mix the compounds. After the materials are uniformly mixed, adding the materials into an extruder, carrying out extrusion granulation at 230 ℃, carrying out annealing treatment at 170 ℃ for 1 hour after the extrusion is finished, and obtaining the material with the tensile strength of 82Mpa and the fracture impact toughness of 46kJ/m2And a novel polyester composite material having a dielectric constant of 3.1.
Example two:
respectively weighing 700g, 300g, 30g, 20g and 10g of PCT, PPO, glass fiber powder, maleic anhydride and benzophenone compounds, drying the PCT, PPO, glass fiber powder, maleic anhydride and benzophenone compounds in a vacuum dryer, and stirring by a stirrer to uniformly mix the compounds. After the materials are uniformly mixed, adding the materials into an extruder, carrying out extrusion granulation at 230 ℃, carrying out annealing treatment at 170 ℃ for 1 hour after the extrusion is finished, and obtaining the material with the tensile strength of 85Mpa and the fracture impact toughness of 47kJ/m2And a novel polyester composite material having a dielectric constant of 2.6.
Example three:
respectively weighing 700g, 300g,50g, 20g and 10g of PCT, PPO, glass fiber powder, maleic anhydride and benzophenone compounds, drying the PCT, PPO, glass fiber powder, maleic anhydride and benzophenone compounds in a vacuum dryer, and stirring by a stirrer to uniformly mix the compounds. After the materials are uniformly mixed, adding the materials into an extruder, carrying out extrusion granulation at 230 ℃, carrying out annealing treatment at 170 ℃ for 1 hour after the extrusion is finished, and obtaining the material with the tensile strength of 96Mpa and the fracture impact toughness of 37kJ/m2And a novel polyester composite material having a dielectric constant of 2.9.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The polyester composite material is characterized by comprising 60-70% by mass of polyester resin master batch, 20-30% by mass of blend, 1-5% by mass of reinforcing agent, 1-5% by mass of compatilizer and 0.1-2% by mass of stabilizer, and is prepared by mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer.
2. The polyester-based composite material according to claim 1, wherein the polyester resin masterbatch is one or a combination of more of poly (1, 4-cyclohexanedimethanol terephthalate), poly (ethylene terephthalate), or poly (butylene terephthalate).
3. The polyester-based composite material according to claim 1, wherein the blend is one or a combination of both of polyphenylene ether and polylactic acid.
4. The polyester composite according to claim 1, wherein the compatibilizer is one or a combination of two of a styrene-maleic anhydride copolymer and maleic anhydride.
5. The polyester composite according to claim 1, wherein the reinforcing agent is one or a combination of attapulgite, glass fiber, carbon fiber, boron nitride, or silicon carbide.
6. The polyester composite according to claim 1, wherein the stabilizer is one or a combination of more of a benzophenone compound, a hindered phenol compound, or a phosphite compound.
7. The polyester composite according to any one of claims 1 to 6, wherein the method for producing the polyester composite comprises:
weighing a certain amount of the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer in proportion, and placing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer in a vacuum drying oven for drying for a period of time, wherein the temperature in the vacuum drying oven is a first temperature; after the drying is finished, stirring and uniformly mixing the polyester resin master batch, the blend, the reinforcing agent, the compatilizer and the stabilizer by a stirrer to obtain a mixture;
adding the mixture into an extruder, and performing extrusion granulation on the mixture at a second temperature to obtain mixture particles; after the extrusion is finished, injection molding the mixture particles at a third temperature to form a thin plate; and after the injection molding is finished, annealing the thin plate at a fourth temperature for a period of time to obtain the polyester composite material.
8. The polyester-based composite material according to claim 7, wherein the polyester resin master batch, the blend, the reinforcing agent, the compatibilizer and the stabilizer are dried in the vacuum oven at a temperature of 50 to 70 ℃ for 0.5 to 1.5 hours, and the sheet is annealed at a temperature of 150 to 170 ℃ for 0.5 to 1.5 hours.
9. The polyester composite according to claim 7, wherein the second temperature is 230 to 300 ℃ and the third temperature is 70 to 90 ℃.
10. A flexible sheathing substrate, wherein the flexible sheathing substrate is made of the polyester-based composite material according to any one of claims 1 to 9.
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| CN202110701360.4A CN113372692A (en) | 2021-06-23 | 2021-06-23 | Polyester composite material and flexible cover sheet base material |
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| CN202110701360.4A CN113372692A (en) | 2021-06-23 | 2021-06-23 | Polyester composite material and flexible cover sheet base material |
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| JPS59159847A (en) * | 1983-03-03 | 1984-09-10 | Toyobo Co Ltd | Thermoplastic resin composition |
| EP0550207A1 (en) * | 1991-12-31 | 1993-07-07 | General Electric Company | Polyphenylene ether/polyalkylene terephthalate compositions |
| JP2009209226A (en) * | 2008-03-03 | 2009-09-17 | Toyobo Co Ltd | Polyester resin composition |
| CN102649871A (en) * | 2011-02-28 | 2012-08-29 | 深圳市富恒塑胶新材料有限公司 | Degradable PBT/PLA (Polybutylece Terephthalate/Poly Lactic Acid) alloy and preparation method thereof |
| CN104927316A (en) * | 2015-06-26 | 2015-09-23 | 苏州云舒新材料科技有限公司 | Highly heat-resistant composite and preparation method thereof |
| CN107365480A (en) * | 2017-05-09 | 2017-11-21 | 疆合材料科技（苏州）有限公司 | NMT materials of high heat-resisting low-k and preparation method thereof |
| CN109575528A (en) * | 2018-10-22 | 2019-04-05 | 广东圆融新材料有限公司 | Low dielectric high tenacity enhancing PBT/PPO composition and preparation method thereof |
| CN111647256A (en) * | 2020-06-30 | 2020-09-11 | 上海电力大学 | Toughened polylactic acid composite material and preparation method thereof |
-
2021
- 2021-06-23 CN CN202110701360.4A patent/CN113372692A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159847A (en) * | 1983-03-03 | 1984-09-10 | Toyobo Co Ltd | Thermoplastic resin composition |
| EP0550207A1 (en) * | 1991-12-31 | 1993-07-07 | General Electric Company | Polyphenylene ether/polyalkylene terephthalate compositions |
| JP2009209226A (en) * | 2008-03-03 | 2009-09-17 | Toyobo Co Ltd | Polyester resin composition |
| CN102649871A (en) * | 2011-02-28 | 2012-08-29 | 深圳市富恒塑胶新材料有限公司 | Degradable PBT/PLA (Polybutylece Terephthalate/Poly Lactic Acid) alloy and preparation method thereof |
| CN104927316A (en) * | 2015-06-26 | 2015-09-23 | 苏州云舒新材料科技有限公司 | Highly heat-resistant composite and preparation method thereof |
| CN107365480A (en) * | 2017-05-09 | 2017-11-21 | 疆合材料科技（苏州）有限公司 | NMT materials of high heat-resisting low-k and preparation method thereof |
| CN109575528A (en) * | 2018-10-22 | 2019-04-05 | 广东圆融新材料有限公司 | Low dielectric high tenacity enhancing PBT/PPO composition and preparation method thereof |
| CN111647256A (en) * | 2020-06-30 | 2020-09-11 | 上海电力大学 | Toughened polylactic acid composite material and preparation method thereof |
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