CN104017335A - Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof - Google Patents
Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof Download PDFInfo
- Publication number
- CN104017335A CN104017335A CN201410256507.3A CN201410256507A CN104017335A CN 104017335 A CN104017335 A CN 104017335A CN 201410256507 A CN201410256507 A CN 201410256507A CN 104017335 A CN104017335 A CN 104017335A
- Authority
- CN
- China
- Prior art keywords
- polyester
- coupling agent
- carbon fiber
- carbon
- nucleator
- 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
Abstract
The invention relates to a carbon fiber conductive enhanced PET/polyester alloy and a preparation method thereof. The carbon fiber conductive enhanced PET is prepared from the following raw materials in percentage by weight: 60-70 percent of PET, 5-20 percent of polyester, 2-4 percent of nucleating agent, 0.5-10 percent of conductive fillers, 5-20 percent of carbon fibers, 1-2 percent of coupling agents, 0.5-1 percent of antioxygen and 0.5-1 percent of lubricants. The preparation method comprises the following steps of: filling PET, the polyester, the nucleating agents, the conductive fillers, the coupling agents, the antioxygen and the lubricants into a high blending machine for blending for 3-5 minutes; adding the mixture from a first section of a cylinder body of a twin-screw extruder and adding carbon fibers from a fourth section of the cylinder body of the twin-screw extruder; extruding and pelleting at the temperature of 240-250 DEG C while controlling the rotation speed of the twin-screw extruder to be 1050-1200rpm to obtain the carbon fiber conductive enhanced PET/polyester alloy with high mechanical property, short formation period and attractive appearance of the product.
Description
Technical field
The invention belongs to polymeric material field, especially relate to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy and preparation method thereof.
Background technology
Instantly, along with industrial development, society is constantly progressive, and swap-in pollutes also day by day serious.So find one environmentally friendly, low-carbon environment-friendly, sustainable development pattern is very urgent, especially aspect material, the smelting of metal is consumed energy, and contaminative is all very large, use macromolecular material can effectively reduce energy consumption at some field alternative metals material, reduce and pollute.Therefore, quality the plastics relatively light and processing of phase commute become desirable substitute.But macromolecular material does not have the performance of metallic substance in some aspects, be unfavorable for processing and application, for example, and its poorly conductive, its electric conductivity of the common plastics of non-modified is very low, and in this case, researching and developing high performance conductive plastics becomes new trend.The Electroconductive Polymer Composites that comprises macromolecular material and electroconductive stuffing has been widely used for semiconductor applications, electrical equipment association area, automobile and aircraft field.Utilize the main purpose of this type of conductive composite material to be: for example; can work in-process without conductive primer direct spraying; technique is simple; energy-conserving and environment-protective; can also protect semiconductor device to avoid static; prevent the mishandle of precision instrument by blocking-up hertzian wave, prevent the generation of the static causing due to friction etc.
Poly terephthalic acid second methyl alcohol ester (hereinafter to be referred as PET) has good mechanical property, resistance toheat, electrical property and chemical stability, and is a kind of thermoplastic engineering plastic of cheapness.But due to easy warpage and longer shaping cycle, limit to a great extent its range of application.Investigator had done large quantity research to PET blending and modifying both at home and abroad in the last few years, and had a lot of alloying products in market sale, but this type of alloy is still subject to the impact of interlaminar resin consistency, and mechanical property is poor, there is not problems in PET/ polyester alloy, and cost is lower.Therefore PET/ polyester alloy becomes new exploitation focus.
But, PET, PTT (Poly(Trimethylene Terephthalate)), PBT (polybutylene terephthalate) and PEN (poly-2,6-(ethylene naphthalate)) etc. there is similar chemical structure, although the consistency between polyester is fine, crystal property each other differs greatly.In order to improve crystallinity difference, optimized alloy performance, just need to be used nucleator.Nucleator in the market can be divided into inorganic, organic and polymer three classes, and wherein effect surely belongs to the ionomer Surlyn resin of du pont company's exploitation preferably.
Carbon fiber not only has the intrinsic intrinsic property of carbon material, has again the soft workability of textile fibres concurrently.Its proportion is less than 1/4 of steel, but intensity is very high, is fortifying fibre of new generation.Compared with traditional glass fibre (GF), the Young's modulus of carbon fiber be its more than 3 times, and insoluble swollen in organic solvent, acid, alkali, solidity to corrosion is very unoutstanding.Carbon fiber is divided into universal and high-performance type by mechanical property.Common carbon fiber intensity is that 1000 MPas (MPa), modulus are 100GPa left and right.High-performance carbon fibers is divided into again high-strength (intensity 2000MPa, modulus 250GPa) and high model (more than modulus 300GPa), and what intensity was greater than 4000MPa is called again superelevation strong type: what modulus was greater than 450GPa is called superelevation model.In addition, carbon fiber self also has conductive characteristic, and can between resin collective, run through formation conductive net, thereby greatly improves the conductive capability of material.
Chinese patent literature CN103224694A discloses a kind of preparation method of the PBT of conduction matrix material, and its formula is by weight percentage: polyethylene terephthalate 80-100 part, conductive agglomerate 15-20 part, toughner 1-5 part, photomask agent 1-2 part, oxidation inhibitor 0.2-0.8 part.Wherein, conductive agglomerate is made up of 68% Graphene, 22% dispersion agent, 10% coupling agent.Conductive agglomerate is made in this invention, has increased its process complexity, indirectly raises the cost; And this mixture has added more Graphene, the cost of material is obviously higher, and meanwhile, the cost of PBT is also higher than PET, and comprehensively its cost is obviously higher, is unfavorable for industrialization, and competitive power is low.
Chinese patent literature CN1420911A discloses a kind of conduction PPO/PA Alloy And Preparation Method, and described matrix material is followed successively by by weight percentage: 10～50 parts of polyphenylene oxide, 35～65 parts of nylon, 0.4～3 part of carbon filament, 5～40 parts, talcum, reach as high as the compatilizer of 10 parts and reach as high as impact modifier of 20 parts etc.Preparation technology is simple in this invention, and the product good mechanical property, the stability that make are high, and has good flame retardant properties and conductivity.
But the two-phase system consistency that above-mentioned alloy material adopts is also bad, therefore needs to add expanding material and impels it compatible, this not only can increase the cost of alloy, and can affect the rigidity of material, causes the reduction of stretching and bending property.Secondly, the cost of polyphenylene oxide is higher with respect to PET, and in this electrical conductivity alloy, PET is lower comparatively speaking in the cost of other polyester, and has processed.Although above-mentioned several alloy materials have adopted carbon fiber to strengthen, but do not add silane coupling agent and go to improve dispersiveness and the interface interaction power of carbon fiber between resin matrix, therefore the enhancing of carbon fiber and conduction effectiveness are not given full play to, and the mechanical property of product is unsatisfactory.In addition, silane coupling agent can also improve the avidity of mineral filler and resin in material, thereby improves the performance of alloy.The present invention proposes in order to address these problems just.
Summary of the invention
Object of the present invention is exactly to provide the fine conduction of a kind of carbon REINFORCED PET/polyester alloy and preparation method thereof in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
The fine conduction of a kind of carbon REINFORCED PET/polyester alloy, is prepared by the raw material of following component and weight part content:
PET60-70, polyester 5-20, nucleator 2-4, conductive filler material 0.5-10, carbon fiber 5-20, coupling agent 1-2, oxidation inhibitor 0.5-1, lubricant 0.5-1.
Described PET is the polyethylene terephthalate of viscosity 0.8-0.9dl/g.
Described polyester is Poly(Trimethylene Terephthalate), polybutylene terephthalate or polyethylene glycol 2，6-naphthalene dicarboxylate.
Described nucleator is Surlyn resin.
Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder.
Described carbon fiber is the carbon fiber of T700 grade, tensile strength 5200MPa.
Described coupling agent is silane coupling agent.
Described oxidation inhibitor is selected from one or both in irgasfos 168 or antioxidant 1010.
Described lubricant is selected from one or both in paraffin, polyethylene wax or Poly Propylene Wax.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET65.8, polyester 17, nucleator 4, conductive filler material 5.7, carbon fiber 5, coupling agent 1, oxidation inhibitor 1, lubricant 0.5%; Described polyester is polyethylene glycol 2，6-naphthalene dicarboxylate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is paraffin.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET67.4, polyester 12.6, nucleator 3, conductive filler material 4, carbon fiber 10, coupling agent 1.5, oxidation inhibitor 1, lubricant 0.5%; Described polyester is Poly(Trimethylene Terephthalate); Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is polyethylene wax.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET67.4, polyester 12.6, nucleator 3, conductive filler material 4, carbon fiber 10, coupling agent 1.5, oxidation inhibitor 1, lubricant 0.5%; Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black, carbon nanotube or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is polyethylene wax.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET61.2, polyester 15.3, nucleator 3, conductive filler material 2.5, carbon fiber 15, coupling agent 1.5, oxidation inhibitor 0.5, lubricant 1%; Described polyester is Poly(Trimethylene Terephthalate); Described nucleator is Surlyn resin; Described conductive filler material is generally by one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET61.2, polyester 15.3, nucleator 3, conductive filler material 2.5, carbon fiber 15, coupling agent 1.5, oxidation inhibitor 0.5, lubricant 1%; Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
As preferred embodiment, polyester alloy adopts the raw material of following component and weight part content to prepare: PET65.6, polyester 7.4, nucleator 2, conductive filler material 1.5, carbon fiber 20, coupling agent 2, oxidation inhibitor 0.5, lubricant 1; Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that polyethylene wax and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
The preparation method of the fine conduction of carbon REINFORCED PET/polyester alloy, adopts following steps:
(1) PET, polyester, nucleator, conductive filler material, coupling agent, oxidation inhibitor and lubricant are put into high-speed mixer and mixing 3-5min, then added by twin screw extruder first paragraph cylindrical shell;
(2) carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3) rotating speed of control twin screw extruder is 1050-1200rpm, and temperature is 240-250 DEG C and carries out extruding pelletization, prepares conductive carbon fibres REINFORCED PET/polyester alloy.
Compared with prior art, the present invention has the following advantages:
(1) owing to having adopted suitable nucleator in preparation process, improved the crystal property of polyester alloy.Because Surlyn8920 at high temperature can react with PET, form the product P ET-COONa with ionic end groups, this product forms end-blocking ion cluster, and assembles in PET melt, forms out-phase microcell.Promote elementary nucleation.Meanwhile, on out-phase microcell surface, existing taking PET molecular chain structure unit is main interfacial layer, between it and ion cluster, has good interaction, has so just accelerated the formation of elementary nucleus.When PET-COONa generates.Also has the generation of PET-R (the flexible group that R is Surlyn8920).Because R molecule chain flexibility is better than PET molecular chain, its introducing can promote the compliant motion of PET molecular chain, has not only reduced molecular chain and diffuse into the free energy of lattice, has also improved the crystallization rate of PET.In addition, due to the existence of ester in system, reaction can generate ester-COONa and ester-R, and the existence meeting of these two kinds of materials further strengthens above-mentioned effect, makes the crystallization rate of system become faster, thereby has shortened the shaping cycle of conductive carbon fibres REINFORCED PET/polyester alloy.Also do not find that at present other nucleators have effect like this.
(2) owing to having adopted carbon fiber in preparation process, not only can significantly promote the mechanical property of material, can also play the effect that strengthens conduction.Carbon fiber has good electroconductibility, and seepage theory thinks, the conductivity of conducing composite material is made up of separately or comprehensively 3 conditions: 1. conducting particles is in contact with one another and becomes continuous chain-like structure, forms conductive channel; 2. each conducting particles is independently scattered in matrix, forms conductive channel by tunnel effect or electron emission; 3. conducting particles continues to connect, and is the synthesis result of chain passage and tunnel effect.According to seepage theory, originally isolated filler particles of disperseing, after volume disperses to reach a certain critical content, will form continuous conductive path, and at this moment conducting particles is in two states, the one, between particle, there is physical contact, electric charge carrier can flow in continuous conductor; The 2nd, between particle, there is caking agent thin layer to exist, so that the activation of current carrier itself and moving.According to " seepage theory " principle, the formation of conductive network is the precondition that matrix material is realized conducting function.The length-to-diameter ratio of carbon fiber is larger, is more conducive to electro-conductive fiber overlap joint each other and forms conductive channel, and carbon fiber is in matrix material, and contact to each other forms the fine conductive network of carbon fibre-carbon; Carbon fiber, as bridge between carbon black, forms carbon black-carbon fibre-carbon black conductive network simultaneously.Meanwhile, this carbon fiber has higher mechanical property, has the tensile modulus up to 5200MPa, can reach the mechanics effect that other common conductive carbon fibres do not reach, the mechanical property of strongthener.
(3) owing to having adopted silane coupling agent in preparation process, the hydrolysising group in silane coupling agent is combined with inorganic substance, forms siloxanes; And in silane coupling agent organo-functional group can react and combination with organism, by using silane coupling agent, between inorganic substance and the interface of organic substance, erect " molecular bridge " again, two kinds of character great disparities material link together, improve matrix material performance and increase cohesive strength.Through test, silane coupling agent KH570 applies a best class coupling agent in polyester.By KH570 to carbon blacksurface processing, improve the avidity of carbon black filler and resin, improve the mechanical property of matrix material, also improve dispersiveness and the interface interaction power of carbon fiber between resin matrix simultaneously, thereby optimize mechanical property and the conductivity of material, improved the outward appearance of product.
(4) the conductive carbon fibres REINFORCED PET/polyester alloy preparing has good mechanical property and conductivity, can replace expensive special engineering plastics in some occasion, is with a wide range of applications.
Embodiment
Below by specific embodiment, the present invention is further elaborated, but does not limit the present invention.
In various embodiments of the present invention, PET resin used is the PET-CB-608S of Shanghai Yuan Fang Industrial Co., Ltd;
The PBT-TH6100 that PBT (polybutylene terephthalate) is Xinjiang Lanshan Tunhe Polyester Co., Ltd;
PTT (Poly(Trimethylene Terephthalate)) is the 4700-TFE-10 of RTP company of the U.S.;
PEN (polyethylene glycol 2，6-naphthalene dicarboxylate) is the TN-8065S of Japanese Di Ren company;
Nucleator is the ionomer Surlyn 8920 of du pont company;
Carbon black is the ZY6500 of the many fine chemistry industry companies of Qujing of Yunnan, and granularity is 44um;
Crystalline flake graphite is Qingdao Dong Kai graphite company limited, and granularity is respectively 12um, 44um, 104um;
Graphite Powder 99 is the prosperous Science and Technology Ltd. in south China, Shenzhen, and granularity is respectively 104um;
Expanded graphite is Qingdao Fu Sheng graphite company, particle diameter 325 orders;
Conductive metal powder is Shenzhen Chang Xinda shielding material company limited, particle diameter 325,400,600,800 orders;
Carbon fiber is the TG01 of Hyosung Corporation of Korea S;
Silane coupling agent is the KH-570 of Nanjing Qian Peng Chemical Co., Ltd.;
Irgasfos 168 and antioxidant 1010 are that BASF Aktiengesellschaft produces;
Paraffin is that Shijiazhuang Yi Ma Chemical Co., Ltd. produces;
Polyethylene wax and Poly Propylene Wax are that Shanghai Ke Maide Industrial Co., Ltd. produces.
Model and manufacturer's information of tensile strength, flexural strength, modulus in flexure, shock strength, heat-drawn wire (1.82MPa) and measuring thermal conductivity in various embodiments of the present invention instrument used are as follows.
Universal electrical tensile testing machine: CMT6104 type, group company is newly thought carefully in Shenzhen;
Izodtest instrument: XJV5.5 type, Chengde Jinjian Testing Instrument Co., Ltd.;
Heat-drawn wire determinator: XWB-300A type, Chengde Ke Cheng trier company limited;
Volt ohm-milliammeter: U1231A type, Agilent company of the U.S..
Embodiment 1
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is polyethylene glycol 2，6-naphthalene dicarboxylate;
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder;
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Coupling agent is Silane coupling reagent KH-570;
Oxidation inhibitor is the mixture that irgasfos 168 and antioxidant 1010 form in the ratio of 3: 7;
Lubricant is paraffin.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 34.8%PET, 8.7% polyester, 45% conductive filler material, 4% nucleator, 1% silane coupling agent, 1% oxidation inhibitor and 0.5% lubricant are put into high-speed mixer and mixing 5min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 5% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1050rpm, temperature is 240 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
Embodiment 2
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is Poly(Trimethylene Terephthalate);
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder;
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Compatilizer is Silane coupling reagent KH-570;
Oxidation inhibitor is the mixture that irgasfos 168 and antioxidant 1010 form in the ratio of 3: 7;
Lubricant is polyethylene wax.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 37.4%PET, 6.6% polyester, 3% nucleator, 40% conductive filler material, 1.5% coupling agent, 1% oxidation inhibitor and 0.5% lubricant are put into high-speed mixer and mixing 5min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 10% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1100rpm, temperature is 245 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
Embodiment 3
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is polybutylene terephthalate;
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder;
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Compatilizer is Silane coupling reagent KH-570;
Oxidation inhibitor is the mixture that irgasfos 168 and antioxidant 1010 form in the ratio of 3: 7;
Lubricant is polyethylene wax.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 37.4%PET, 6.6% polyester, 40% conductive filler material, 3% nucleator, 1.5% coupling agent, 1% oxidation inhibitor and 0.5% lubricant are put into high-speed mixer and mixing 5min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 10% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1100rpm, temperature is 245 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
Embodiment 4
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is Poly(Trimethylene Terephthalate);
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder;
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Coupling agent is Silane coupling reagent KH-570;
Oxidation inhibitor is antioxidant 1010;
Lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 35.2% PET, 8.8% polyester, 3% nucleator, 35% conductive filler material, 1.5% coupling agent, 0.5% oxidation inhibitor and 1% lubricant are put into high-speed mixer and mixing 3min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 15% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1200rpm, temperature is 245 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
Embodiment 5
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is polybutylene terephthalate;
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Coupling agent is Silane coupling reagent KH-570;
Oxidation inhibitor is antioxidant 1010;
Lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 35.2%PET, 8.8% polyester, 3% nucleator, 35% conductive filler material, 1.5% coupling agent, 0.5% oxidation inhibitor and 1% lubricant are put into high-speed mixer and mixing 4min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 15% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1200rpm, temperature is 245 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
Embodiment 6
A kind of conductive carbon fibres REINFORCED PET/polyester alloy, counts by weight percentage, and composition and the content of its raw material are as follows:
PET is polyethylene terephthalate, and viscosity is 0.8-0.9dl/g;
Polyester is polybutylene terephthalate;
Nucleator is Surlyn8920;
Conductive filler material can be the mixture of one or more compositions in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black and conductive metal powder,
Carbon fiber is tensile strength 5200MPa, and carbon fiber grade is T700 grade;
Coupling agent is Silane coupling reagent KH-570;
Oxidation inhibitor is antioxidant 1010;
Lubricant is that polyethylene wax and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
The preparation method of above-mentioned a kind of conductive carbon fibres REINFORCED PET/polyester alloy, specifically comprises the following steps:
(1), 40%PET, 4.5% polyester, 2% nucleator, 30% conductive filler material, 2% coupling agent, 0.5% oxidation inhibitor and 1% lubricant are put into high-speed mixer and mixing 5min, then added by twin screw extruder first paragraph cylindrical shell;
(2), 20% carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3), to control the rotating speed of twin screw extruder be 1200rpm, temperature is 250 DEG C and carries out extruding pelletization, obtains conductive carbon fibres REINFORCED PET/polyester alloy.
By following condition and measuring apparatus specific volume resistance, use injection moulding machine to carry out sample preparation according to ASTM, two ends otch with hacksaw or razor at the narrow parallel position of tensile bars used (ASTM D638), apply two incision with conductive silver paint, the seasoning of silver paint is placed at least 5 minutes more than 30 minutes or in baking oven (70-100 DEG C), use volt ohm-milliammeter measuring resistance, utilize the size of batten to be calculated as follows specific volume resistance (SPV)=(measuring resistance) (width) (thickness)/(length).
The tensile strength of the conductive carbon fibres REINFORCED PET/polyester alloy to above-described embodiment 1-6 gained, elongation at break, flexural strength, modulus in flexure, specific volume resistance, shock strength, heat-drawn wire (1.82MPa), molding shrinkage (disk) detect, and it the results are shown in following table 1:
The physicals of the conductive carbon fibres REINFORCED PET/polyester alloy of table 1 embodiment 1-6 gained
As can be seen from Table 1, along with the increase of carbon fiber content, tensile strength, flexural strength, modulus in flexure, shock strength and the heat-drawn wire of conductive carbon fibres REINFORCED PET/polyester alloy material of gained improve thereupon, the mechanical property that shows thus carbon fiber content and the PET polyester alloy trend that is proportionate
Further, by the relatively discovery to embodiment 3,5,6, in the situation that alloy substrate is identical, (be PET/PBT alloy), along with the continuous reduction (from 4%-2.5%-1.5%) of conductive filler material content, the resistivity of material does not raise, and has on the contrary and reduces much.And meanwhile, in alloy, the content of carbon fiber constantly raises, therefore show that carbon fiber has good electroconductibility, the effectively conductivity of strongthener, reduces resistance alloys rate.
Further, by embodiment 2-3 and embodiment 4-5 are relatively found, in the situation that other formulas are all identical, PET/PBT alloy has more advantage in mechanical property, and PET/PTT alloy is relatively better in electroconductibility.This may be along with polyester chain structure difference, causes polyester viscosity difference, and the electroconductibility that viscosity is large is poor.Therefore, different types of polyester is also not quite similar on the impact of PET alloy properties, should select as the case may be in actual applications suitable polyester to carry out modification to PET.
In sum, a kind of conductive carbon fibres REINFORCED PET/polyester alloy of the present invention, has the features such as good mechanical property, resistivity is low, cost is low.The present invention has adopted suitable nucleator, conductive filler material and coupling agent, strengthen the crystal property of polyester, improve the avidity between polyester and conductive filler material, improve dispersiveness and the interface interaction power of carbon fiber between resin matrix, thereby processing characteristics, conductivity and the mechanical property of alloy are optimized, can replace expensive special engineering plastics in some occasion, be with a wide range of applications.
The above is only preferred case study on implementation of the present invention; it should be noted that, for the those skilled in the art in this field, do not departing under the prerequisite of the inventive method; also can make a little supplementing and improvement, these supplement and improve and also should be considered as protection scope of the present invention.
Claims (10)
1. the fine conduction of carbon REINFORCED PET/polyester alloy, is characterized in that, this polyester alloy is prepared by the raw material of following component and weight part content:
PET60-70, polyester 5-20, nucleator 2-4, conductive filler material 0.5-10, carbon fiber 5-20, coupling agent 1-2, oxidation inhibitor 0.5-1, lubricant 0.5-1.
2. the fine conduction of a kind of carbon according to claim 1 REINFORCED PET/polyester alloy, is characterized in that, described PET is the polyethylene terephthalate of viscosity 0.8-0.9dl/g; Described polyester is Poly(Trimethylene Terephthalate), polybutylene terephthalate or polyethylene glycol 2，6-naphthalene dicarboxylate.
3. the fine conduction of a kind of carbon according to claim 1 REINFORCED PET/polyester alloy, is characterized in that, described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber is the carbon fiber of T700 grade, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is selected from one or both in irgasfos 168 or antioxidant 1010; Described lubricant is selected from one or both in paraffin, polyethylene wax or Poly Propylene Wax.
4. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET65.8, polyester 17, nucleator 4, conductive filler material 5.7, carbon fiber 5, coupling agent 1, oxidation inhibitor 1, lubricant 0.5%;
Described polyester is polyethylene glycol 2，6-naphthalene dicarboxylate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is paraffin.
5. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET67.4, polyester 12.6, nucleator 3, conductive filler material 4, carbon fiber 10, coupling agent 1.5, oxidation inhibitor 1, lubricant 0.5%;
Described polyester is Poly(Trimethylene Terephthalate); Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is polyethylene wax.
6. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET67.4, polyester 12.6, nucleator 3, conductive filler material 4, carbon fiber 10, coupling agent 1.5, oxidation inhibitor 1, lubricant 0.5%;
Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black, carbon nanotube or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is that irgasfos 168 and antioxidant 1010 are the mixture of 3: 7 compositions in mass ratio; Described lubricant is polyethylene wax.
7. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET61.2, polyester 15.3, nucleator 3, conductive filler material 2.5, carbon fiber 15, coupling agent 1.5, oxidation inhibitor 0.5, lubricant 1%;
Described polyester is Poly(Trimethylene Terephthalate); Described nucleator is Surlyn resin; Described conductive filler material is generally by one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
8. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET61.2, polyester 15.3, nucleator 3, conductive filler material 2.5, carbon fiber 15, coupling agent 1.5, oxidation inhibitor 0.5, lubricant 1%;
Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that paraffin and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
9. according to the fine conduction of a kind of carbon REINFORCED PET/polyester alloy described in any one in claim 1-3, it is characterized in that, the raw material of the preferred following component of polyester alloy and weight part content prepares:
PET65.6, polyester 7.4, nucleator 2, conductive filler material 1.5, carbon fiber 20, coupling agent 2, oxidation inhibitor 0.5, lubricant 1;
Described polyester is polybutylene terephthalate; Described nucleator is Surlyn resin; Described conductive filler material is selected from one or more in natural flake graphite powder, graphous graphite powder, expanded graphite, carbon black or conductive metal powder; Described carbon fiber grade is T700, tensile strength 5200MPa; Described coupling agent is silane coupling agent; Described oxidation inhibitor is antioxidant 1010; Described lubricant is that polyethylene wax and Poly Propylene Wax are the mixture of 1: 1 composition in mass ratio.
10. according to the preparation method of the fine conduction of the carbon described in any one in claim 1-9 REINFORCED PET/polyester alloy, it is characterized in that, the method adopts following steps:
(1) PET, polyester, nucleator, conductive filler material, coupling agent, oxidation inhibitor and lubricant are put into high-speed mixer and mixing 3-5min, then added by twin screw extruder first paragraph cylindrical shell;
(2) carbon fiber is added by the 4th section of cylindrical shell of twin screw extruder;
(3) rotating speed of control twin screw extruder is 1050-1200rpm, and temperature is 240-250 DEG C and carries out extruding pelletization, prepares conductive carbon fibres REINFORCED PET/polyester alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256507.3A CN104017335A (en) | 2014-06-10 | 2014-06-10 | Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256507.3A CN104017335A (en) | 2014-06-10 | 2014-06-10 | Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104017335A true CN104017335A (en) | 2014-09-03 |
Family
ID=51434352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410256507.3A Pending CN104017335A (en) | 2014-06-10 | 2014-06-10 | Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104017335A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877294A (en) * | 2015-06-09 | 2015-09-02 | 苏州圣谱拉新材料科技有限公司 | Attapulgite-PEN-PET composite material and preparing method |
| CN105155023A (en) * | 2015-10-26 | 2015-12-16 | 太仓市双宇化纤有限公司 | High-strength thermoplastic polyester and nano carbon fiber composite and preparation method thereof |
| CN111621123A (en) * | 2020-05-11 | 2020-09-04 | 天津金发新材料有限公司 | Low-warpage PET/PBT composite material and preparation method thereof |
| WO2022210502A1 (en) * | 2021-03-29 | 2022-10-06 | 三菱マテリアル株式会社 | Resin composition and resin molded body |
| WO2023190715A1 (en) * | 2022-03-31 | 2023-10-05 | 三菱マテリアル株式会社 | Resin composition, resin molded body, and method for producing resin composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214802A (en) * | 2013-04-19 | 2013-07-24 | 北京中纺优丝特种纤维科技有限公司 | Polyester-fiber conductive masterbatch pre-dispersion and preparation method thereof |
| CN103382297A (en) * | 2013-07-22 | 2013-11-06 | 上海电力学院 | Low-warpage carbon-fiber-reinforced polyethylene terephthalate (PET)/polyester alloy and preparation process thereof |
| CN103772919A (en) * | 2012-10-17 | 2014-05-07 | 合肥杰事杰新材料股份有限公司 | Halogen-free fire-retardant glass fiber reinforced PET composition and preparation method thereof |
-
2014
- 2014-06-10 CN CN201410256507.3A patent/CN104017335A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103772919A (en) * | 2012-10-17 | 2014-05-07 | 合肥杰事杰新材料股份有限公司 | Halogen-free fire-retardant glass fiber reinforced PET composition and preparation method thereof |
| CN103214802A (en) * | 2013-04-19 | 2013-07-24 | 北京中纺优丝特种纤维科技有限公司 | Polyester-fiber conductive masterbatch pre-dispersion and preparation method thereof |
| CN103382297A (en) * | 2013-07-22 | 2013-11-06 | 上海电力学院 | Low-warpage carbon-fiber-reinforced polyethylene terephthalate (PET)/polyester alloy and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 曾兆华等: "《材料化学》", 30 June 2013 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877294A (en) * | 2015-06-09 | 2015-09-02 | 苏州圣谱拉新材料科技有限公司 | Attapulgite-PEN-PET composite material and preparing method |
| CN105155023A (en) * | 2015-10-26 | 2015-12-16 | 太仓市双宇化纤有限公司 | High-strength thermoplastic polyester and nano carbon fiber composite and preparation method thereof |
| CN111621123A (en) * | 2020-05-11 | 2020-09-04 | 天津金发新材料有限公司 | Low-warpage PET/PBT composite material and preparation method thereof |
| WO2022210502A1 (en) * | 2021-03-29 | 2022-10-06 | 三菱マテリアル株式会社 | Resin composition and resin molded body |
| WO2023190715A1 (en) * | 2022-03-31 | 2023-10-05 | 三菱マテリアル株式会社 | Resin composition, resin molded body, and method for producing resin composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102532823B (en) | Anti-static polybutylene terephthalate (PBT) material with excellent comprehensive performance and preparation method thereof | |
| CN104017335A (en) | Carbon fiber conductive enhanced PET/polyester alloy and preparation method thereof | |
| CN103382297B (en) | Fine REINFORCED PET/polyester alloy of a kind of low warpage carbon and preparation method thereof | |
| CN102558917B (en) | Wrapped conducting nano material, conducting nano composite material and preparation method for wrapped conducting nano material and conducting nano composite material | |
| CN104629338A (en) | Permanently antistatic PC/ABS modified alloy, and preparation method thereof | |
| CN102898834A (en) | Long glass fiber reinforced electrically and thermally conductive polyphenylene sulfide composite material and preparation method thereof | |
| CN113121962B (en) | Polytetrafluoroethylene/liquid crystal polymer composite material and preparation method thereof | |
| CN102532867A (en) | Conductive nylon material and preparation method thereof | |
| CN107541049B (en) | Graphene-continuous glass fiber reinforced halogen-free flame-retardant weather-resistant PPO/HIPS alloy material and preparation method thereof | |
| CN104140672A (en) | Electric conduction nylon composition and preparing method thereof | |
| CN103756277A (en) | Conductive polycarbonate composite, preparation method and application thereof | |
| CN106479022A (en) | A kind of antistatic PE composite and preparation method thereof | |
| CN102134384A (en) | Polyetheretherketone/polyetherimide/polyethersulfone ternary plastic alloy particles and preparation method thereof | |
| CN104045981B (en) | PET/ polyester alloy that a kind of heat conduction carbon fibre strengthens and preparation method thereof | |
| CN111004478B (en) | High-performance antistatic polyester material and preparation method thereof | |
| CN103740102A (en) | Conductive nylon composite material and preparation method thereof | |
| CN110760177B (en) | Conductive polyphenyl ether/high impact polystyrene composition and preparation method thereof | |
| CN104629331A (en) | Low-temperature resistant PC/ABS alloy, and preparation method thereof | |
| CN104164058B (en) | A kind of low warpage carbon fiber reinforced PC T/ polyester alloy and preparation method thereof | |
| CN110655787B (en) | Conductive polyphenylene ether/polyamide 66 composition and preparation method thereof | |
| CN104419123A (en) | Toughness and strength strengthening flame-retardant and antistatic PBT/PET alloy | |
| CN104650560A (en) | PC/PBT blend alloy with excellent electric and heat conduction and flame retardance | |
| CN104629287A (en) | PC / ABS toughening modification of antistatic composite | |
| CN104725811A (en) | Modified PC/PET alloy and preparation method thereof | |
| CN104672857A (en) | Low-gloss antistatic weather-resistant PC (polycarbonate) material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |