CN1372020A - Anti-electrostatic nano compound polyester fibre and making method thereof - Google Patents
Anti-electrostatic nano compound polyester fibre and making method thereof Download PDFInfo
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Abstract
The antistatic nano composite polyester fibre is made of polyester or modified polyester, promotor and nano powder body through the processes of mixing and melt-spinning, in which the promotor is a condensation product of copolyester containing metaphenylene and polyethylene glycol, and can effectively improve dispersion property of nano powder body in the polyester or modified polyester, and possesses antistatic synergistic effect, and said nano powder body is a metal oxide with good conductivity.
Description
Technical field
The present invention relates to Anti-electrostatic nano compound polyester fibre and making method thereof.This fiber is that polyester (PET) or modified poly ester, promoter, nano-powder tertiary blending melt-spun form.Wherein promoter being contains the copolyesters of a benzene and the condensation product of polyethylene glycol (PEG), and it can effectively improve the dispersiveness of nano-powder at polyester or modified poly ester, and has antistatic synergy; Nano-powder is the metal oxide that the good conductive ability is arranged.This kind nano-composite fiber has higher mechanical property and good antistatic effect.
Background of invention
Polyester fiber is to use synthetic fiber the most widely, but because its fine and close crystalline region structure and very low wettability power cause accumulation of electrostatic charge, makes troubles for production and use, so the antistatic modified of polyester fiber is the focus of research always.Mostly in the past be adopt surfactant-based antistatic additive carry out fabric coating or and fiber blend, this kind antistatic additive is very big to the ambient humidity dependence, the not obvious and easily loss of washing back of its antistatic effect under dry service condition.People such as Gu Lixia, Xiao Ru has invented a kind of copolyester section or fiber and preparation method (CN02110770.X) of cation dye chromophil, it is the copolymer of terephthalic acid (TPA), ethylene glycol, ethylene m-phthalate-5-sodium sulfonate or potassium, the monomer mole ratio of terephthalic acid monomers, ethylene glycol is 1 in the polymer: 1.7-2.4, the monomer of ethylene m-phthalate-5-sodium sulfonate or potassium is the 2%-18% molar weight of terephthalic acid monomers.The copolyester section of this cation dye chromophil or fiber have the cation dyes normal-temperature normal-pressure dyeable, highly shrinkable, fabrics feel soft, characteristics such as anti-fluffing and anti-pilling, and has an environmental safety, can be widely used in pure spin or natural fibre blended, to obtain the wearing fabric of style varied with silk, thin,tough silk, cotton, hair, fiber crops etc.
In recent years, more employing inorganic compound improved the antistatic behaviour of polyester fiber as additive.As blend carbon black, graphite and carbon fiber; Blend metal dust or fento; Blend metallic compound etc.The black color of carbon black, graphite is to limit the major reason of its use, and oxidation forms layer oxide film and loses electric conductivity in air and some metal objects such as copper (Cu), aluminium (Al), iron (Fe) etc. are easy to.Studies have shown that, utilize metallic compound internal electron hole transition can effectively improve the antistatic behaviour of polyester fiber.Current, along with the development of nano material and nanometer technology, the researcher develops multiple nano metal compound powder, has antistatic property efficiently, and the antistatic research for polyester fiber provides new way and new method again.For example nano-oxide has good antistatic performance, Science Institute of Japanese Matsushita Electric Industrial company successfully develops the resin-base nano oxide composite, preliminary test finds that the ability of this class material leak charge is better than the composite of conventional resin-based and carbon black, can change simultaneously the color of this resin-based oxide composite according to the type of nano-oxide, change the single black that carbon black brings.
As everyone knows, the dispersion effect of nano material in matrix influences the performance of its premium properties to a great extent, and this problem is particularly outstanding in fiber research, is presented as that mainly antistatic property is poor, and intensity declines to a great extent.Therefore be necessary to study a kind of antistatic polyester system that can promote the nano material fine dispersion, make fiber can also keep the advantage of polyester on mechanical property having an electrostatic while of good resistance.
Summary of the invention
The purpose of this invention is to provide a kind of anti-electrostatic nano compound polyester fibre.
This fiber of preparation method that another object of the present invention provides a kind of above-mentioned anti-electrostatic nano compound polyester fibre is formed by polyester or modified poly ester, promoter, nano-powder tertiary blending melt-spun.
Polyester or modified poly ester, promoter, nano-powder ternary component weight are: promoter 5-30%; Nano-powder 0.5-10%; All the other are substrate polyester or modified poly ester.Also can by substrate polyester or modified poly ester earlier and nano-powder be blended into antistatic master granule, form with substrate polyester or modified poly ester and promoter blend melt-spun again.Be that anti-electrostatic nano compound polyester fibre also can be formed by polyester or modified poly ester, promoter, the antistatic master granule tertiary blending melt-spun that contains nano-powder, polyester or modified poly ester, promoter, the antistatic master granule each component optimum content (weight) that contains nano-powder are: antistatic master granule 3-15%; Promoter 5-30%; All the other are substrate polyester or modified poly ester.
In the anti-electrostatic nano compound polyester fibre of the present invention, described polyester or modified poly ester, comprise PET, contain the Polyethyleneglycol Terephthalate of a benzene 4-10%/benzene binary acid alkane esters copolymer (IPET) or contain the Polyethyleneglycol Terephthalate/benzene binary acid alkane esters-5-sodium sulfonate of sulfonate 1-10% or the copolymer (HCDP) of potassium, or by terephthalic acid (TPA), ethylene glycol, between the copolymer of benzene binary acid alkane esters-5-sodium sulfonate or potassium, terephthalic acid (TPA) in the polymer (PTA) is 1 with the mol ratio of ethylene glycol (EG): 1.7-2.4, the monomer of benzene binary acid alkane esters-5-sodium sulfonate or potassium is the 2-18mol% of terephthalic acid monomers.
Described nano-powder is inorganic, metal oxide of nano level two valencys, trivalent, tetravalence and composition thereof.
Described promoter is the copolymer of terephthalic acid (TPA) (PTA), a benzene binary acid, ethylene glycol (EG), and its molecular formula is:
Wherein R or R ' are
The described antistatic master granule that contains nano-powder is the above-mentioned inorganic nanometer powder and the blend of matrix (polyester or modified poly ester); For the dispersiveness of nano material in polyester, can add dispersant, as polyvinylpyrrolidone (PVP) or aluminium titanium compound coupling agent.Usually the optimum amount (weight) that contains inorganic nanometer powder in the antistatic master granule of nano-powder is 3-20%, and the optimum amount of dispersant PVP (weight) is 0.3-6%, and the optimum amount (weight) of aluminium titanium compound coupling agent is 0.015-0.6%.
The optimum content of benzene binary acid is the 2-10% of terephthalic acid (TPA) (weight) in the middle of the above-mentioned promoter (IPET-PEG), and the optimum content of PEG is (weight) 6-50% of terephthalic acid (TPA).The optimum weight of PEG is 1000-20000;
The preparation method of above-mentioned anti-electrostatic nano compound polyester fibre of the present invention is promptly by promoter 8-20% weight; Nano-powder 0.5-10% weight; All the other tertiary blending melt-spuns for substrate polyester or modified poly ester form.
Anti-electrostatic nano compound polyester fibre also can be by the antistatic master granule 3-15% that contains nano-powder; Promoter 5-30%; All the other tertiary blending melt-spuns for substrate polyester or modified poly ester polyester or modified poly ester form.
The invention provides polyvinylpyrrolidone (PVP) as the dispersant of nano material in polyester, the weight ratio of PVP and nano material is 1: 5, adding method is: earlier PVP is dissolved in the alcohol, add nano-powder then, stirring mixes it, at last blend is put into vacuum drying oven low temperature drying 24 hours, again with matrix section (PET or modified PET) blend (nano-powder content 5-20%), in double screw extruder to melt extrude granulation under the 260-290 ℃ of temperature.
The present invention also adopts the dispersiveness of a kind of aluminium titanium compound coupling agents to improve nano material in polyester, the weight of coupling agent is the 0.5-3% of nano material, adding method is: earlier coupling agent is dissolved in the acetone, add nano-powder then, stirring mixes it, at last blend is put into vacuum drying oven low temperature drying 24 hours, with matrix section (PET or modified PET) blend (nano-powder content 5-20%), in double screw extruder, melt extrude granulation under 260-290 ℃ of temperature again.
In order further to improve the compatibility of inorganic nano material and polyester, the invention provides a kind of synthetic method of promoter: the acetate that adds PTA, a benzene binary acid, EG and divalence or trivalent metal by 1.7: 1 alcohol and sour mol ratio in polymeric kettle is that catalyst is in 190-225 ℃, 2-2.6kg/cm
3Under carry out esterification, discharge accessory substance H
2O and unnecessary EG, when actual water yield reach theoretical value 90% the time, reaction finishes.After the esterification products release, add the PEG of certain molecular weight and content, and The catalytic antimony trioxide or antimony acetate and stabilizing agent phosphate compounds, normal pressure stirs 30min, is evacuated to 10Pa, 270-275 ℃ of reaction down, basicly stable to moment of torsion, cooling discharge.In the polymerization system, a benzene binary acid consumption is the 2-10% (weight ratio) of PTA, and the consumption of PEG is the 6-50% of PTA, and the molecular weight ranges of PEG is 1000-20000.
The present invention also provides a kind of the interpolation simultaneously in matrix section (polyester or modified poly ester) to contain the antistatic master granule of inorganic nanometer powder and the tertiary blending spinning process of promoter: with polyester or modified poly ester section is matrix, add IPET-PEG block high polymer and antistatic master granule fully mixes, drying, on melt spinning machine, carry out the tertiary blending melt spinning then, make anti-electrostatic nano compound polyester fibre.260-290 ℃ of its spinning temperature; Spinning speed 1000-4000m/min.
PEG ehter bond moisture absorption conduction has antistatic cooperative effect among the electronic conduction of metallic compound and the promoter IPET-PEG, because benzene binary acid between also having added in the promoter building-up process, crystalline rate and the degree of crystallinity of PET have been reduced, the amorphous content of PET is improved, thereby further improve the antistatic synergy of promoter metallizing thing.In addition, IPET and PET or modified PET also have good compatibility in the promoter strand, thereby promoter becomes the bridge that links nano-powder and polyester matrix.Also adopt HCDP (cationic dye capable of dyeing section) as matrix in addition among the present invention, thought sodium group (SO
3Na) sodium ion (Na in
+) can form certain complex compound with PEG, thereby its conductive capability is improved greatly.
The specific embodiment
To help to understand the present invention by following embodiment, but not limit content of the present invention.
Embodiment 1
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the TPA weight ratio), contain the promoter iPET-PEG of PEG (M=1000) 30% (with respect to the TPA weight ratio); Antistatic master granule is to be formed by commodity ATO nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 12: 6: 82 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3.5 times.
Embodiment 2
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by the nano-powder of the oxide of antimony and the hopcalite of tin (commodity are called ATO) and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 10: 5: 85 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3.5 times.
Embodiment 3
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=4000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by ATO nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 10: 5: 85 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3.5 times.
Embodiment 4
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by ATO nano-powder and HCDP section blend granulation, adopts aluminium titanium compound coupling agent to disperse, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 10: 5: 85 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3 times.
Embodiment 5
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by zinc oxide (ZnO) nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 10: 5: 85 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3 times.
Embodiment 6
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by cupric oxide (CuO) nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 5%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 12: 6: 82 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3.2 times.
Embodiment 7
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by ATO nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 10%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 12: 6: 82 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3.2 times.
Embodiment 8
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by ATO nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 10%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 12: 10: 78 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3 times.
Embodiment 9
Adopt the direct esterification method to synthesize and contain a benzene binary acid 4% (with respect to the PTA weight ratio), contain the promoter IPET-PEG of PEG (M=2000) 30% (with respect to the PTA weight ratio); Antistatic master granule is to be formed by ATO nano-powder and HCDP section blend granulation, and dispersant is PVP, and the content of nano-powder is 10%.Promoter, master batch, HCDP section are carried out the tertiary blending spinning in 15: 6: 79 ratio, and 1000 meters/minute of spinning speeds, the draw ratio of fiber are 3 times.
Embodiment 10
Benzene binary acid 4% (with respect to the PTA weight ratio) contained the promoter IPET-PEG of PEG (M=1000) 30% (with respect to the PTA weight ratio) between employing direct esterification method was synthetic, antistatic master granule is formed by ATO nano-powder and HCDP section blend granulation, dispersant is PVP, nano-powder content is 8%, promoter, master batch, PET section are carried out the tertiary blending spinning in 15: 7: 78 ratio, spinning speed is 1000m/min, and the tensile fiber multiple is 3 times.
The composition of table 1 sample, volume resistivity and fracture strength
Annotate: sample number into spectrum corresponds respectively to example 1-10 in the table
| Sample number into spectrum | Volume resistivity (Ω cm) | Fracture strength (cN/dtex) |
| ????1 | ????1.1×10 9 | ????2.408 |
| ????2 | ????2.2×10 9 | ????2.689 |
| ????3 | ????2.8×10 9 | ????2.800 |
| ????4 | ????8.4×10 9 | ????2.232 |
| ????5 | ????4.5×10 10 | ????1.834 |
| ????6 | ????3.1×10 10 | ????2.008 |
| ????7 | ????1.5×10 8 | ????1.912 |
| ????8 | ????3.4×10 8 | ????1.756 |
| ????9 | ????9.0×10 8 | ????2.312 |
| ????10 | ????8.4×10 10 | ????2.74 |
Claims (10)
1, a kind of anti-electrostatic nano compound polyester fibre is the copolymer of following substances: polyester or modified poly ester matrix, promoter, nano-powder or contain the antistatic master granule of nano-powder; Wherein polyester or modified poly ester, promoter, nano-powder ternary component weight are: promoter 5-30%, and nano-powder 0.5-10% or contain the antistatic master granule 3-15% of nano-powder, all the other are substrate polyester or modified poly ester; Described modified poly ester be contain a benzene content 4-10% to benzene binary acid second diester/benzene binary acid alkane two ester copolymer or contain the Polyethyleneglycol Terephthalate that sulfonate content is 1-6%/benzene binary acid alkane two ester copolymer or by the copolymer of terephthalic acid (TPA), ethylene glycol, benzene binary acid alkane diester-5-sodium sulfonate or potassium, the monomer mole ratio of terephthalic acid monomers, ethylene glycol is 1 in the polymer: 1.7-2.4, and the monomer of benzene binary acid alkane esters-5-sodium sulfonate or potassium is the 2.0%-18% molar weight of terephthalic acid monomers; Described nano-powder is to be nano level inorganic, metal oxide or their mixture, and described promoter is the copolymer of terephthalic acid (TPA), a benzene binary acid, ethylene glycol, and its molecular formula is:
Wherein R or R ' are
The described antistatic master granule that contains nano-powder is the blend of nano-powder, dispersant and substrate polyester or modified poly ester, wherein the weight of inorganic nanometer powder is 3-20%, the weight of polyethylene of dispersing agent pyrrolidones be 0.3-6% or/and the weight of aluminium titanium compound coupling agent is 0.015-0.6%, all the other are substrate polyester or modified poly ester.
2, a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 1 is characterized in that described nano-powder is divalence, trivalent, tetravalence inorganic, metal oxide and composition thereof.
3, a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 1 is characterized in that in the described promoter that the optimum content of a benzene binary acid is the 2-10% of terephthalic acid (TPA) weight, and the optimum content of polyethylene glycol is the weight 6-50% of terephthalic acid (TPA).
4, a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 1, the molecular weight that it is characterized in that described polyethylene glycol is 1000-20000.
5, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 1 is characterized in that by 5-30% weight promoter, the nano-powder of 0.5-10% weight, and all the other tertiary blending melt-spuns for substrate polyester or modified poly ester form; Or by the antistatic master granule 3-15% that contains nano-powder; Promoter 5-30%; All the other tertiary blending melt-spuns for substrate polyester or modified poly ester form.Described promoter, nano-powder, nano-powder and modified poly ester are according to claim 1.
6, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 5, it is characterized in that in substrate polyester section or modified poly ester, adding antistatic master granule and promoter simultaneously, abundant mixing, drying, on melt spinning machine, carry out the tertiary blending melt spinning then, make anti-electrostatic nano compound polyester fibre, 260-290 ℃ of its spinning temperature; Spinning speed 1000-4000m/min.
7, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 5, it is characterized in that earlier the polyvinylpyrrolidone dispersant being dissolved in the alcohols, add nano-powder then, the weight ratio of polyvinylpyrrolidone and nano material is 1: 5, at last blend is put into vacuum drying oven low temperature drying 24 hours, with the section blend of substrate polyester or modified poly ester, in double screw extruder, melt extrude granulation under 260-290 ℃ of temperature again.
8, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 5, it is characterized in that earlier aluminium titanium compound coupling agent being dissolved in the acetone, add nano-powder then, the weight of aluminium titanium compound coupling agent is the 0.5-3% of nano material, mix, blend was put into the vacuum drying oven low temperature drying 24 hours, again with the section blend of substrate polyester or modified poly ester, wherein nano-powder weight 5-20% melt extrudes granulation under 260-290 ℃ of temperature in double screw extruder.
9, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 5, the synthetic method that it is characterized in that described promoter is that the acetate that adds terephthalic acid (TPA), a benzene binary acid, ethylene glycol and divalence or trivalent metal by 1.7: 1 alcohol and sour mol ratio in polymeric kettle is catalyst, in 190-225 ℃, 2-2.6kg/cm
3Under carry out esterification after, add polyethylene glycol, and The catalytic antimony trioxide or antimony acetate and stabilizing agent phosphate compounds, normal pressure stirs 30min, is evacuated to 10 handkerchiefs, and is basicly stable to moment of torsion 270-275 ℃ of reaction down, cooling discharge.In the polymerization system, a benzene binary acid consumption is the 2-10% (weight ratio) of terephthalic acid (TPA), and the weight of polyethylene glycol is the 6-50% of terephthalic acid (TPA).
10, the preparation method of a kind of anti-electrostatic nano compound polyester fibre as claimed in claim 5, the molecular weight ranges that it is characterized in that polyethylene glycol is 1000-20000.
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