CN111320856A - Composite material for high-performance PC, PBT and PTFE and preparation method thereof - Google Patents
Composite material for high-performance PC, PBT and PTFE and preparation method thereof Download PDFInfo
- Publication number
- CN111320856A CN111320856A CN202010310487.9A CN202010310487A CN111320856A CN 111320856 A CN111320856 A CN 111320856A CN 202010310487 A CN202010310487 A CN 202010310487A CN 111320856 A CN111320856 A CN 111320856A
- Authority
- CN
- China
- Prior art keywords
- pbt
- ptfe
- composite material
- performance
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
-
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a high-performance PC, PBT and PTFE composite material, which is prepared by matching the following components: polycarbonate, polybutylene terephthalate, polytetrafluoroethylene, a toughening agent, an antioxidant, a compatilizer, an ester exchange inhibitor and a lubricant, and the specific weight is reasonably selected, so that the high-performance PC, PBT and PTFE composite material has high impact toughness, the strength, rigidity and thermal stability of the material are obviously improved, the defects of poor processability, stress cracking and the like of the PC material are effectively overcome, and the high-performance PC, PBT and PTFE composite material can be suitable for manufacturing parts such as gears, bearings, sleeves and the like.
Description
Technical Field
The invention belongs to the technical field of high polymer materials and processing, and particularly relates to a high-performance PC (polycarbonate), PBT (polybutylene terephthalate) and PTFE (polytetrafluoroethylene) composite material and a preparation method thereof.
Background
Polycarbonate (PC) is an almost colorless amorphous polymer in a glassy state, and has good impact strength, excellent insulating properties, a wide range of use temperatures, and good dimensional stability of products. But the fluidity is poor when PC is processed, the product is easy to generate stress cracking, the wear resistance is poor, and the product is sensitive to gaps.
Polybutylene terephthalate (PBT) is an engineering material with excellent comprehensive performance, is crystalline polyester which is milky, translucent or transparent, and has good chemical stability, thermal stability and mechanical strength. The PBT has high crystallization rate, excellent solvent resistance, wear resistance and fatigue resistance.
The PBT has the characteristics of excellent mechanical property, chemical corrosion resistance, easy molding and the like, and the alloy material prepared by blending the PBT and the PC can improve the fluidity of the PC and improve the processability and the chemical resistance. Because PBT is a crystalline polymer and is prone to phase separation when blended with PC plastics, and poor in interfacial adhesion, its impact toughness is not ideal, and a certain amount of elastomer is usually added to improve the impact strength of the blend.
At present, PC/PBT alloy products are mainly used for automobile bumpers, packaging film materials, automobile seats, seats and the like, and are increasingly paid more attention in the industry to solve the problems of stable size, poor material wear resistance, short service life of products and the like.
Therefore, there is a need in the art to provide a composite material for high performance PC, PBT, PTFE and a method for preparing the same, which is easy to process, high in performance, high in thermal stability, and free from surface defects.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method for a high-performance PC, PBT and PTFE composite material. The product has high impact toughness, obviously improves the strength, rigidity and thermal stability of the material, and effectively overcomes the defects of poor processability, stress cracking and the like of the PC material.
In order to realize one of the purposes, the invention provides a composite material for high-performance PC, PBT and PTFE, which adopts the following technical scheme:
a composite material for high-performance PC, PBT and PTFE comprises the following components in parts by weight:
preferably, the polycarbonate is bisphenol a polycarbonate, and is one or a mixture of any two of melt fingers 10 and 15.
Preferably, the polybutylene terephthalate PBT is any one or any two of 0.8-1.2dl/g viscosity.
Preferably, the polytetrafluoroethylene PTFE has a specific surface area of 1-3m2Per g of PTFE fine powder.
Preferably, the toughening agent adopts any one or any two of methyl methacrylate-butadiene-styrene terpolymer, acrylic acid grafted styrene-butadiene rubber and maleic anhydride grafted EPDM, and the grafting rate of the toughening agent is 1.0%.
Preferably, the antioxidant is inorganic phosphate.
Preferably, the compatilizer adopts any one or any two of styrene-acrylonitrile-GMA and styrene-N-phenylmaleic acid imine-maleic anhydride copolymer for mixing.
Preferably, the ester exchange inhibitor adopts at least one of organic silicon phosphate and triphenyl phosphate.
Preferably, the lubricant is pentaerythritol tetrastearate.
The invention also aims to provide a preparation method of the composite material for high-performance PC, PBT and PTFE, which comprises the following steps:
s1, preparing raw materials: preparing 50-75 parts by weight of polycarbonate PC; 10-35 parts of polybutylene terephthalate (PBT); 5-15 parts of polytetrafluoroethylene PTFE; 1-10 parts of a toughening agent; 0.1-1 part of antioxidant; 1-5 parts of a compatilizer; 0.2-2 parts of a transesterification inhibitor; 0.2-2 parts of a lubricant;
s2, mixing and extruding: mixing and stirring uniformly polycarbonate PC, polybutylene terephthalate PBT, polytetrafluoroethylene PTFE, a toughening agent, an antioxidant, a compatilizer, an ester exchange inhibitor and a lubricant; and then adding the mixture into a double-screw extruder, controlling the extrusion temperature to be 220-250 ℃, extruding, cooling, drawing and granulating to finally obtain the high-performance PC, PBT and PTFE composite material.
Preferably, the temperature of the double-screw extruder is totally 8 sections, the process temperature of the eight zones is respectively 250 ℃, 245 ℃, 240 ℃, 230 ℃, 225 ℃ and 220 ℃, and the rotating speed of the main machine is controlled at 400 revolutions per minute.
The invention has the beneficial effects that:
1) the composite material for high-performance PC, PBT and PTFE of the invention is prepared by matching the following components: polycarbonate, polybutylene terephthalate, polytetrafluoroethylene, a toughening agent, an antioxidant, a compatilizer, an ester exchange inhibitor and a lubricant, and the specific weight is reasonably selected, so that the high-performance PC, PBT and PTFE composite material has high impact toughness, the strength, rigidity and thermal stability of the material are obviously improved, and the defects of poor processability, stress cracking and the like of the PC material are effectively improved.
2) The preparation method for the high-performance PC, PBT and PTFE composite material has the advantages of simple operation, low cost, high production benefit, high and stable mechanical properties in all aspects, is very suitable for industrial production, can improve the wear resistance of the material, can prolong the service life of the material, has excellent comprehensive performance, and can be suitable for manufacturing parts such as gears, bearings, sleeves and the like.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the attached tables in the embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
The composite material for high-performance PC, PBT and PTFE of the embodiment comprises the following components in parts by weight: 62 parts of polycarbonate PC, 20 parts of polybutylene terephthalate PBT, 10 parts of polytetrafluoroethylene PTFE, 3 parts of a toughening agent, 0.5 part of an antioxidant, 3 parts of a compatilizer, 1 part of a transesterification inhibitor and 0.5 part of a lubricant.
The preparation method of the composite material for high-performance PC, PBT and PTFE comprises the following steps:
s1, mixing and stirring the polycarbonate, the polybutylene terephthalate, the polytetrafluoroethylene, the flexibilizer, the antioxidant, the compatilizer, the ester exchange inhibitor and the lubricant uniformly;
and S2, adding the mixture obtained in the step S1 into a double-screw extruder, setting the temperature of the double-screw extruder to be 8 sections in total, controlling the process temperature of the eight sections to be 250 ℃, 245 ℃, 240 ℃, 230 ℃, 225 ℃ and 220 ℃, controlling the rotating speed of a main machine to be 400 r/min, and finally extruding, cooling, drawing and granulating to obtain the high-performance PC, PBT and PTFE composite material.
And drying the obtained material in a blower drying oven at 115 ℃ for 2-4 hours, and then performing injection molding to prepare test sample strips and products.
Example 2
The composite material for high-performance PC, PBT and PTFE of the embodiment comprises the following components in parts by weight: 57 parts of polycarbonate PC, 25 parts of polybutylene terephthalate PBT, 10 parts of polytetrafluoroethylene PTFE, 3 parts of a toughening agent, 0.5 part of an antioxidant, 3 parts of a compatilizer, 1 part of a transesterification inhibitor and 0.5 part of a lubricant.
The preparation method of the composite material for high-performance PC, PBT and PTFE comprises the following steps:
s1, mixing and stirring the polycarbonate, the polybutylene terephthalate, the polytetrafluoroethylene, the flexibilizer, the antioxidant, the compatilizer, the ester exchange inhibitor and the lubricant uniformly;
and S2, adding the mixture obtained in the step S1 into a double-screw extruder, setting the temperature of the double-screw extruder to be 8 sections in total, controlling the process temperature of the eight sections to be 250 ℃, 245 ℃, 240 ℃, 230 ℃, 225 ℃ and 220 ℃, controlling the rotating speed of a main machine to be 400 r/min, and finally extruding, cooling, drawing and granulating to obtain the high-performance PC, PBT and PTFE composite material.
And drying the obtained material in a blower drying oven at 115 ℃ for 2-4 hours, and then performing injection molding to prepare test sample strips and products.
Example 3
The composite material for high-performance PC, PBT and PTFE of the embodiment comprises the following components in parts by weight: 60 parts of polycarbonate PC, 20 parts of polybutylene terephthalate PBT, 12 parts of polytetrafluoroethylene PTFE, 3 parts of a toughening agent, 0.5 part of an antioxidant, 3 parts of a compatilizer, 1 part of a transesterification inhibitor and 0.5 part of a lubricant.
The preparation method of the composite material for high-performance PC, PBT and PTFE comprises the following steps:
s1, mixing and stirring the polycarbonate, the polybutylene terephthalate, the polytetrafluoroethylene, the flexibilizer, the antioxidant, the compatilizer, the ester exchange inhibitor and the lubricant uniformly;
and S2, adding the mixture obtained in the step S1 into a double-screw extruder, setting the temperature of the double-screw extruder to be 8 sections in total, controlling the process temperature of the eight sections to be 250 ℃, 245 ℃, 240 ℃, 230 ℃, 225 ℃ and 220 ℃, controlling the rotating speed of a main machine to be 400 r/min, and finally extruding, cooling, drawing and granulating to obtain the high-performance PC, PBT and PTFE composite material.
And drying the obtained material in a blower drying oven at 115 ℃ for 2-4 hours, and then performing injection molding to prepare test sample strips and products.
Performance test of products obtained in examples 1 to 3
The properties of the products of examples 1 to 3 were tested and evaluated by the following methods.
(1) And tensile strength: testing according to ASTM D638 standard method;
(2) bending strength: testing according to ASTM D790;
(3) flexural modulus: testing according to ASTM D790;
(4) izod notched impact strength: testing according to ASTM D256 standard method;
(5) ball indentation hardness: testing according to an ISO 2039-1 standard method;
(6) melt flow rate (i.e. melt index): testing according to ASTM D1238 standard method;
(7) and the surface of the color plate: visual inspection was carried out.
The performance test results of the high-performance PC, PBT and PTFE composite materials prepared in the embodiments 1 to 3 are shown in the following table 1:
the combination of the materials shown in the table 1 shows that the composite material for high-performance PC, PBT and PTFE has excellent comprehensive performance, good wear resistance and long service life, can effectively improve the defects of poor processability, stress cracking and the like of PC materials, and has good market popularization value.
TABLE 1 Performance test results of the high performance PC, PBT, PTFE composites of examples 1-3
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The composite material for high-performance PC, PBT and PTFE is characterized by comprising the following components in parts by weight:
2. a composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the polycarbonate is bisphenol A polycarbonate, and is one or a mixture of any two of melt fingers 10 and 15.
3. The high-performance PC, PBT and PTFE composite material of claim 1, wherein: the polybutylene terephthalate PBT is any one or any two of the viscosity of 0.8-1.2 dl/g.
4. The high-performance PC, PBT and PTFE composite material of claim 1, wherein: the specific surface area of the polytetrafluoroethylene PTFE is 1-3m2Per g of PTFE fine powder.
5. A composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the toughening agent adopts one or any two of methyl methacrylate-butadiene-styrene terpolymer, acrylic acid grafted styrene-butadiene rubber and maleic anhydride grafted EPDM, and the grafting rate of the toughening agent is 1.0%.
6. A composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the antioxidant adopts inorganic phosphate.
7. A composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the compatilizer adopts any one or any two of styrene-acrylonitrile-GMA and styrene-N-phenylmaleic acid imine-maleic anhydride copolymer to be mixed.
8. A composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the ester exchange inhibitor adopts at least one of organic silicon phosphate and triphenyl phosphate.
9. A composite material for high performance PC, PBT, PTFE according to claim 1, characterized in that: the lubricant is pentaerythritol tetrastearate.
10. A method for preparing a high performance PC, PBT, PTFE composite according to any of claims 1 to 9, comprising the steps of:
s1, preparing raw materials: preparing 50-75 parts by weight of polycarbonate PC; 10-35 parts of polybutylene terephthalate (PBT); 5-15 parts of polytetrafluoroethylene PTFE; 1-10 parts of a toughening agent; 0.1-1 part of antioxidant; 1-5 parts of a compatilizer; 0.2-2 parts of a transesterification inhibitor; 0.2-2 parts of a lubricant;
s2, mixing and extruding: mixing and stirring uniformly polycarbonate PC, polybutylene terephthalate PBT, polytetrafluoroethylene PTFE, a toughening agent, an antioxidant, a compatilizer, an ester exchange inhibitor and a lubricant; and then adding the mixture into a double-screw extruder, controlling the extrusion temperature to be 220-250 ℃, extruding, cooling, drawing and granulating to finally obtain the high-performance PC, PBT and PTFE composite material. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310487.9A CN111320856A (en) | 2020-04-20 | 2020-04-20 | Composite material for high-performance PC, PBT and PTFE and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310487.9A CN111320856A (en) | 2020-04-20 | 2020-04-20 | Composite material for high-performance PC, PBT and PTFE and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111320856A true CN111320856A (en) | 2020-06-23 |
Family
ID=71164562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010310487.9A Pending CN111320856A (en) | 2020-04-20 | 2020-04-20 | Composite material for high-performance PC, PBT and PTFE and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111320856A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457649A (en) * | 2020-11-25 | 2021-03-09 | 广州视源电子科技股份有限公司 | PC/PBAT transparent composite material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09291204A (en) * | 1996-03-01 | 1997-11-11 | Polyplastics Co | Polybutylene terephthalate resin composition and molded article |
| CN101343409A (en) * | 2008-08-27 | 2009-01-14 | 毛惠敏 | Carbon fiber reinforced composite and preparation thereof |
| US20130237644A1 (en) * | 2012-01-18 | 2013-09-12 | Minqi XIN | Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate |
| CN104497519A (en) * | 2014-11-26 | 2015-04-08 | 苏州新区佳合塑胶有限公司 | Low-temperature-resistant light-duty plastic for seabed optical cable conjunction boxes |
| CN104530681A (en) * | 2014-12-26 | 2015-04-22 | 上海普利特复合材料股份有限公司 | High-performance ultraviolet-resistant PC/PBT composite material and preparation method thereof |
| CN105670261A (en) * | 2016-03-30 | 2016-06-15 | 南京利华工程塑料有限公司 | Special PC/PBT (polycarbonate/polybutylene terephthalate) alloy material for gas-assisted molding and preparation method thereof |
-
2020
- 2020-04-20 CN CN202010310487.9A patent/CN111320856A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09291204A (en) * | 1996-03-01 | 1997-11-11 | Polyplastics Co | Polybutylene terephthalate resin composition and molded article |
| CN101343409A (en) * | 2008-08-27 | 2009-01-14 | 毛惠敏 | Carbon fiber reinforced composite and preparation thereof |
| US20130237644A1 (en) * | 2012-01-18 | 2013-09-12 | Minqi XIN | Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate |
| CN104497519A (en) * | 2014-11-26 | 2015-04-08 | 苏州新区佳合塑胶有限公司 | Low-temperature-resistant light-duty plastic for seabed optical cable conjunction boxes |
| CN104530681A (en) * | 2014-12-26 | 2015-04-22 | 上海普利特复合材料股份有限公司 | High-performance ultraviolet-resistant PC/PBT composite material and preparation method thereof |
| CN105670261A (en) * | 2016-03-30 | 2016-06-15 | 南京利华工程塑料有限公司 | Special PC/PBT (polycarbonate/polybutylene terephthalate) alloy material for gas-assisted molding and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457649A (en) * | 2020-11-25 | 2021-03-09 | 广州视源电子科技股份有限公司 | PC/PBAT transparent composite material and preparation method thereof |
| CN112457649B (en) * | 2020-11-25 | 2022-11-15 | 广州视源电子科技股份有限公司 | PC/PBAT transparent composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101280095A (en) | Glass fiber reinforced polyethylene glycol terephthalate composite material and preparation thereof | |
| CN107245234B (en) | Glass fiber reinforced halogen-free flame-retardant polycarbonate composite material and preparation method thereof | |
| CN108034204B (en) | low-temperature impact resistant polyester composition and preparation method thereof | |
| CN103013088A (en) | High-rigidity polycarbonate composite material and preparation method thereof | |
| CN113956643B (en) | Chemical-resistant scratch-resistant high-hardness PCPBT (Poly-p-phenylene terephthamide) composite material and preparation method thereof | |
| CN101220198A (en) | Fiberglass reinforcing PBT alloy material and method for producing the same | |
| CN112625406B (en) | Cold-heat shock resistant polybutylene terephthalate composition | |
| CN113462141A (en) | High-toughness low-floating-fiber-reinforced PC/PBT alloy material and preparation method thereof | |
| CN111621123A (en) | Low-warpage PET/PBT composite material and preparation method thereof | |
| CN107365494B (en) | PA6/PC/PBT ternary alloy material and preparation method thereof | |
| CN113604038B (en) | Ultrahigh-flow high-impact PPO/PA66 alloy material and preparation method thereof | |
| CN109385063B (en) | Wear-resistant PC/ASA alloy material and preparation method thereof | |
| CN108047659B (en) | PBT/PC/ASA composite material and preparation method thereof | |
| CN111320856A (en) | Composite material for high-performance PC, PBT and PTFE and preparation method thereof | |
| CN112266613A (en) | Polyphenylene sulfide composite material, preparation method thereof and injection molding part | |
| CN109988425B (en) | High-low temperature cyclic cracking resistant polyphenylene sulfide toughened composite material and preparation method thereof | |
| CN111253728A (en) | Polycarbonate composition and preparation method thereof | |
| CN104710744A (en) | Toughened modified PC/PET alloy material with high impact resistant performance and preparation method thereof | |
| CN111349331A (en) | Mineral-filled PC alloy material with high impact resistance and low warpage and preparation method thereof | |
| CN111410833A (en) | Preparation method of long glass fiber reinforced high-gloss PC/ABS alloy material | |
| CN111004476B (en) | Engineering plastic composition and preparation method thereof | |
| CN108690341B (en) | Compatilizer for PC/ABS alloy and PC/ABS alloy | |
| CN111484721A (en) | Low-temperature impact resistant PC/ABS composite material and preparation method thereof | |
| CN111454571A (en) | Preparation method of glass fiber reinforced PA56/PP alloy material | |
| CN114806098A (en) | Low-warpage reinforced PBT (polybutylene terephthalate) material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200623 |
|
| RJ01 | Rejection of invention patent application after publication |