CN110240786A - A kind of PBT composite and preparation method thereof with good laser mark performance - Google Patents

A kind of PBT composite and preparation method thereof with good laser mark performance Download PDF

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Publication number
CN110240786A
CN110240786A CN201910378086.4A CN201910378086A CN110240786A CN 110240786 A CN110240786 A CN 110240786A CN 201910378086 A CN201910378086 A CN 201910378086A CN 110240786 A CN110240786 A CN 110240786A
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pbt
laser mark
good laser
weight
pbt composite
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高东
康华龙
沈志军
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NANTONG KEPOLY ENGINEERING PLASTICS Co Ltd
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NANTONG KEPOLY ENGINEERING PLASTICS Co Ltd
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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • 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
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of PBT composite with good laser mark performance, the material including following parts by weight: 60~80 parts by weight of polybutylene terephthalate (PBT)；6~8 parts by weight of polypropylene fibre；8~10 parts by weight of polytetrafluoroethylene (PTFE)；2~4 parts by weight of PBT laser powder；8~10 parts by weight of fire retardant；3~6 parts by weight of toughener；0.5~2 parts by weight of antioxidant；1~3 parts by weight of lubricant；2~4 parts by weight of myristic acid cardamom ester.PBT composite with good laser mark performance of the invention improves the internal structure of PBT plastic, with excellent mechanical performance, heat resistance and flame retardant property by optimizing to its chemical component in microcosmic degree.

Description

A kind of PBT composite and preparation method thereof with good laser mark performance
Technical field
The present invention relates to a kind of plastics, more particularly to a kind of PBT composite with good laser mark performance and Preparation method.
Background technique
Polybutylene terephthalate (PBT) (polybutylene terephthalate, abbreviation PBT) is by Isosorbide-5-Nitrae-fourth two The thermoplastic polyester that alcohol and terephthalic acid (TPA) or terephthalate polycondensation obtain.Since PBT has heat resistance, weather-proof Property, the advantages that resistance to chemical reagents, electrical characteristic is good, water imbibition is small, gloss is good, be widely used in electronic apparatus, auto parts, The fields such as machinery, household wares are five big general one of engineering plastics.Electronic apparatus industry now, which has, greatly to be required producing Laser printing is able to carry out on product, and laser printing is completed at high temperature.Thermal deformation of the pure PBT resin at 0.46MPa Temperature is 156 DEG C or so, and for the heat distortion temperature at 1.82MPa at 60 DEG C or so, this makes pure PBT resin not be able to satisfy conduct It is required that the requirement of the electric type product of laser printing.In order to improve PBT in the temperature tolerance depressed, it is often necessary to pure PBT tree Rouge is modified, and is effectively reprocessed generally by enhancing (such as addition glass), fire-retardant, toughening means.General PBT work Engineering plastics can meet the high temperature requirement of laser printing material by the heat-resisting quantity of modified obtained product, but not It is able to satisfy the requirement of fast black base bottom white font, so Related product is such as poly- all using other engineering plastics production both at home and abroad Vinyl chloride (PVC), polypropylene (PP), the materials such as polyethylene terephthalate (PET), but most of is all amorphism Material, more demanding in product processing, as dwell pressure wants 150Mpa: injection speed reaches 100Mpa, and material under high temperature is Easy solution estranged, discoloration etc..
Summary of the invention
In view of the above shortcomings, multiple it is an object of the invention to develop a PBT with good laser mark performance Condensation material, with excellent high temperature resistance.
Technical solution of the present invention is summarized as follows:
A kind of PBT composite with good laser mark performance, wherein the material including following parts by weight:
Preferably, the PBT composite with good laser mark performance, wherein the fire retardant includes 30~40wt% expanded vermiculite and 60~70wt% triphenyl phosphate.
Preferably, the PBT composite with good laser mark performance, wherein toughener include 60~ 70wt% polyimides and 30~40wt% acrylonitrile-butadiene-styrene copolymer.
Preferably, the PBT composite with good laser mark performance, wherein antioxidant include 20~ 30wt% copper dialkyldithiocarbamate and 70~80wt%N ', N- diphenyl-para-phenylene diamine.
Preferably, the PBT composite with good laser mark performance, wherein lubricant include 60~ 70wt% oleic acid and 30~40wt% behenamide.
Preferably, the PBT composite with good laser mark performance, wherein further include 3~5 weight The antimony oxide of part.
Preferably, the PBT composite with good laser mark performance, wherein further include 1~3 weight The sorbitan fatty acid ester of part.
Preferably, the PBT composite with good laser mark performance, wherein the expanded vermiculite Specific surface area is 500~700m2/g。
Preferably, the PBT composite with good laser mark performance, wherein the polytetrafluoroethylene (PTFE) Number-average molecular weight be 3500~4000.
A kind of preparation method of the PBT composite with good laser mark performance, wherein the preparation method includes Following step:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
The beneficial effects of the present invention are:
(1) PBT composite with good laser mark performance of the invention, it is excellent by being carried out to its chemical component Change, the internal structure of PBT plastic is improved in microcosmic degree, with excellent mechanical performance, heat resistance and flame retardant property.
(2) present invention improves impact strength, heat resistance, waterproof performance and the insulating properties of PBT by the way that polytetrafluoroethylene (PTFE) is added Energy；The viscosity that PBT is adjusted by the way that myristic acid cardamom ester is added, improves its mobile performance；Expanded vermiculite and triphenyl phosphate association Same-action improves fire-retardant, the high temperature resistance of PBT resin；Oleic acid and behenamide and polymer have good compatibility, it The cohesive force between polymeric inner plays a part of reducing polymer molecule, so as to improve the internal frictional heat generation of plastic melt and molten The mobility of body reduces frictional force；Its high temperature resistance is further increased by the way that antimony oxide is added；By the way that dehydration mountain is added Pears alcohol fatty acid ester improves the compatibility of filler and polymer, prevents the sedimentation and cohesion of particle.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification Text can be implemented accordingly.
This case proposes a kind of PBT composite with good laser mark performance, wherein the material including following parts by weight Material:
Polybutylene terephthalate (PBT) has extraordinary chemical stability, mechanical strength, electrical insulating property, is drawn by moisture absorption The electrical property risen varies less, and insulation voltage is very high, and forming stability and dimensional accuracy are excellent；Polypropylene fibre intensity height, Elasticity is good, wear-resisting, corrosion-resistant, and wear-resistant, the elastic and corrosion resistance of PBT can be improved.Improve PBT by the way that polytetrafluoroethylene (PTFE) is added Impact strength, heat resistance, waterproof performance and insulation performance；The viscosity of PBT is adjusted by the way that myristic acid cardamom ester is added, and is improved Its mobile performance.
As the another embodiment of this case, wherein fire retardant includes 30~40wt% expanded vermiculite and 60~70wt% phosphoric acid Triphenylmethyl methacrylate.Triphenyl phosphate can generate structure more stable crosslinking shape solid matter or carburization zone, the shape of carburization zone when heated Polymer can be prevented further to be pyrolyzed at one side, the thermal decomposition generation that it on the other hand can be prevented internal enters gas phase participation Combustion process.Expanded vermiculite makes it absorb more heats before reaching thermal decomposition temperature by the thermal capacitance of raising polymer, from And improve its flame retardant property.This based flame retardant largely inhales thermal property when giving full play to it in conjunction with water vapour, improves its own Fire retardancy.Expanded vermiculite and triphenyl phosphate synergistic effect, improve fire-retardant, the high temperature resistance of PBT resin.
As the another embodiment of this case, wherein toughener includes 60~70wt% polyimides and 30~40wt% propylene Nitrile-butadiene-styrene copolymer.The toughness that PBT resin is improved by the way that toughener is added, becomes one for PBT homogeneous system Heterogeneous system, i.e. toughener are gathered into spheric granules and form dispersed phase, cracking resistance in the continuous phase that the cross-linked network of PBT is constituted Performance mutates, and fracture toughness significantly improves, but mechanical property, loss of thermal resistance are smaller.
As the another embodiment of this case, wherein antioxidant include 20~30wt% copper dialkyldithiocarbamate and 70~80wt%N ', N- diphenyl-para-phenylene diamine.Copper dialkyldithiocarbamate and N ', N- diphenyl-para-phenylene diamine are compound With good consonance effect, because copper dialkyldithiocarbamate eliminates active alkyl diradical and peroxy radical, N ', N- diphenyl-para-phenylene diamine can extend butyl epoxy stearate oxidation induction period, to improve the antioxygenic property of PBT, make Obtain PBT keeps PBT that xanthochromia does not occur and stablizes PBT melt viscosity under 300 DEG C of melt temperatures.
As the another embodiment of this case, wherein lubricant includes 60~70wt% oleic acid and 30~40wt% behenic acid acyl Amine.Why lubricant can play lubricating action, be the addition because of it, reduce the friction of plastic melt, oleic acid and behenic acid acyl Amine and polymer have good compatibility, its cohesive force between polymeric inner plays a part of reduction polymer molecule, thus Improve the internal frictional heat generation of plastic melt and the mobility of melt, reduces frictional force.
As the another embodiment of this case, wherein further include the antimony oxide of 3~5 parts by weight.By the way that three oxidations two are added Antimony further increases its high temperature resistance.
As the another embodiment of this case, wherein further include the sorbitan fatty acid ester of 1~3 parts by weight.Pass through addition Sorbitan fatty acid ester improves the compatibility of filler and polymer, prevents the sedimentation and cohesion of particle.
As the another embodiment of this case, wherein the specific surface area of expanded vermiculite is 500~700m2/g。
As the another embodiment of this case, wherein the number-average molecular weight of polytetrafluoroethylene (PTFE) is 3500~4000.
A kind of preparation method of the PBT composite with good laser mark performance, wherein preparation method includes following Step:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Specific embodiment and comparative example is listed below:
Embodiment 1:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 30wt% expanded vermiculite and 70wt% triphenyl phosphate；Toughener include 60wt% polyimides and 40wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 20wt% copper dialkyldithiocarbamate and 80wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 60wt% oleic acid and 40wt% behenamide；The ratio of expanded vermiculite Surface area is 500m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 3500.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Embodiment 2:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 33wt% expanded vermiculite and 67wt% triphenyl phosphate；Toughener include 65wt% polyimides and 35wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 22wt% copper dialkyldithiocarbamate and 78wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 64wt% oleic acid and 36wt% behenamide；The ratio of expanded vermiculite Surface area is 600m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 3700.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Embodiment 3:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 40wt% expanded vermiculite and 60wt% triphenyl phosphate；Toughener include 70wt% polyimides and 30wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 30wt% copper dialkyldithiocarbamate and 70wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 70wt% oleic acid and 30wt% behenamide；The ratio of expanded vermiculite Surface area is 700m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 4000.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 1:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 30wt% expanded vermiculite and 70wt% triphenyl phosphate；Toughener include 60wt% polyimides and 40wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 20wt% copper dialkyldithiocarbamate and 80wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 60wt% oleic acid and 40wt% behenamide；The ratio of expanded vermiculite Surface area is 500m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 3500.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, material obtains described by double screw extruder blending extrusion, cooling, pelletizing PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 revs/min.
Comparative example 2:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 30wt% expanded vermiculite and 70wt% triphenyl phosphate；Toughener include 60wt% polyimides and 40wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 20wt% copper dialkyldithiocarbamate and 80wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 60wt% oleic acid and 40wt% behenamide；The ratio of expanded vermiculite Surface area is 500m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 3500.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, PBT laser powder, myristic acid cardamom ester, expanded vermiculite, triphenyl phosphate, polyimides, Acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl-para-phenylene diamine, oleic acid, mountain Yu acid amide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 3:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant is triphenyl phosphate；Toughener includes 65wt% polyimides and 35wt% acrylonitrile-butadiene-benzene second Alkene copolymer；Antioxidant includes 22wt% copper dialkyldithiocarbamate and 78wt%N ', N- diphenyl-para-phenylene diamine；Profit Lubrication prescription includes 64wt% oleic acid and 36wt% behenamide；The specific surface area of expanded vermiculite is 600m2/g；Polytetrafluoroethylene (PTFE) Number-average molecular weight is 3700.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, triphenyl phosphate, polyamides is sub- Amine, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl-para-phenylene diamine, oil Acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 4:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 33wt% expanded vermiculite and 67wt% triphenyl phosphate；Toughener is polyimides；Antioxidant packages Include 22wt% copper dialkyldithiocarbamate and 78wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 64wt% oil Acid and 36wt% behenamide；The specific surface area of expanded vermiculite is 600m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 3700。
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, copper dialkyldithiocarbamate, N ', N- diphenyl-para-phenylene diamine, oleic acid, behenamide, three oxidations Two antimony and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 5:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 40wt% expanded vermiculite and 60wt% triphenyl phosphate；Toughener include 70wt% polyimides and 30wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant is copper dialkyldithiocarbamate；Lubricant includes 70wt% oleic acid and 30wt% behenamide；The specific surface area of expanded vermiculite is 700m2/g；The equal molecule of the number of polytetrafluoroethylene (PTFE) Amount is 4000.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, oleic acid, behenic acid acyl Amine, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 6:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 40wt% expanded vermiculite and 60wt% triphenyl phosphate；Toughener include 70wt% polyimides and 30wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 30wt% copper dialkyldithiocarbamate and 70wt%N ', N- diphenyl-para-phenylene diamine；Lubricant is oleic acid；The specific surface area of expanded vermiculite is 700m2/g；Polytetrafluoroethylene (PTFE) Number-average molecular weight be 4000.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
Comparative example 7:
A kind of PBT composite with good laser mark performance, the material including following parts by weight:
Fire retardant includes 40wt% expanded vermiculite and 60wt% triphenyl phosphate；Toughener include 70wt% polyimides and 30wt% acrylonitrile-butadiene-styrene copolymer；Antioxidant include 30wt% copper dialkyldithiocarbamate and 70wt%N ', N- diphenyl-para-phenylene diamine；Lubricant includes 70wt% oleic acid and 30wt% behenamide；The ratio of expanded vermiculite Surface area is 700m2/g；The number-average molecular weight of polytetrafluoroethylene (PTFE) is 4000.
A kind of preparation method of the PBT composite with good laser mark performance, preparation method include the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, phosphoric acid triphen Ester, polyimides, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl is to benzene Diamines, oleic acid, behenamide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, first is mixed It closes object to be added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material is blended by double screw extruder and is squeezed Out, cooling, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 Rev/min.
The performance test results of embodiment and comparative example are listed below:
It can be seen that by examples detailed above, the material obtained not only has excellent mechanical performance, and heat resistance anti-flammability It can be good compared with the material of comparative example.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited In specific details.

Claims (10)

1. a kind of PBT composite with good laser mark performance, which is characterized in that the material including following parts by weight:
2. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that the resistance Firing agent includes 30~40wt% expanded vermiculite and 60~70wt% triphenyl phosphate.
3. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that the increasing Tough dose includes 60~70wt% polyimides and 30~40wt% acrylonitrile-butadiene-styrene copolymer.
4. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that described anti- Oxygen agent includes 20~30wt% copper dialkyldithiocarbamate and 70~80wt%N ', N- diphenyl-para-phenylene diamine.
5. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that the profit Lubrication prescription includes 60~70wt% oleic acid and 30~40wt% behenamide.
6. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that further include 3 The antimony oxide of~5 parts by weight.
7. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that further include 1 The sorbitan fatty acid ester of~3 parts by weight.
8. the PBT composite according to claim 2 with good laser mark performance, which is characterized in that described swollen The specific surface area of swollen vermiculite is 500~700m2/g。
9. the PBT composite according to claim 1 with good laser mark performance, which is characterized in that described poly- The number-average molecular weight of tetrafluoroethene is 3500~4000.
10. the preparation side of described in any item PBT composites with good laser mark performance according to claim 1~9 Method, which is characterized in that the preparation method includes the following steps:
1) by polypropylene fibre, polytetrafluoroethylene (PTFE), PBT laser powder, myristic acid cardamom ester, expanded vermiculite, triphenyl phosphate, poly- Acid imide, acrylonitrile-butadiene-styrene copolymer, copper dialkyldithiocarbamate, N ', N- diphenyl-para-phenylene diamine, Oleic acid, behenamide, antimony oxide and sorbitan fatty acid ester are stirred to obtain the first mixture；
2) polybutylene terephthalate (PBT) is entered from the first segment cylinder of double screw extruder after drying, the first mixture It is added from the 4th cylinder of double screw extruder, while polypropylene fibre is added, material passes through double screw extruder blending extrusion, cold But, pelletizing obtains the PBT composite；Each section of reaction temperature is 200~240 DEG C, and screw speed is 300~400 revs/min Clock.
CN201910378086.4A 2019-05-08 2019-05-08 A kind of PBT composite and preparation method thereof with good laser mark performance Pending CN110240786A (en)

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CN104119598A (en) * 2014-07-21 2014-10-29 青岛顺益新材料科技有限公司 Composite material for case
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Application publication date: 20190917