CN103132178A - Oxidative-resistant polyphenylene sulfide fibre - Google Patents
Oxidative-resistant polyphenylene sulfide fibre Download PDFInfo
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Abstract
The invention provides an oxidative-resistant polyphenylene sulfide fibre. The polyphenylene sulfide fibre comprises, relative to fiber total amount, 0.1wt%-3.0wt% of phosphite ester antioxygen A, 0.1 wt%-2.5wt% of hindered phenol antioxygen B, and 0.1wt%-2.0wt% of dilauryl thiodipropionate antioxygen C. At the temperature of 220DEG C for 48 weeks, the breaking strength of the polyphenylene sulfide fibre reaches 1.80-2.20cN/dtex. The heat-resisting anti-oxidation ability of the polyphenylene sulfide fibre prepared from combined antioxygens is improved. Therefore, the polyphenylene sulfide fibre has wide prospect in fields such as high-temperature filtering.
Description
Technical field
The present invention relates to a kind of oxidative resistance polyphenylene sulfide fibre.
Background technology
Polyphenylene sulfide fibre (PPS fiber) is a kind of functional special fiber.Generally adopt conventional melt spinning method by polyphenylene sulfide (PPS resin), then at high temperature carry out after-drawing, curling and cut off after make.The PPS fiber has excellent heat endurance and anti-flammability, oxygen index value 34～35, and in the time of 200 ℃, strength retention is 60%, extension at break is unchanged; Chemical resistance is only second to polytetrafluoroethylene fibre; Textile process performance is preferably arranged.The PPS fiber is mainly for the preparation of filtration, the dry zone of paper industry and cable encapsulate layer and the fire-proof fabric etc. of high-temperature flue gas and special thermal medium at present.
Yet now the subject matter of PPS fiber be oxidation resistent susceptibility and light fastness a little less than, and under the environment for use of the PPS condition that normally higher temperature and oxygen exist, so the improvement of sludge proof PPS fiber is problem demanding prompt solution.
The making of the anti-oxidant polyphenyl thioether filter material that relates in China publication CN101537280A, adopt nano particle and antioxidant dispersion emulsion to be coated in the oxidative resistance that polyphenylene sulfide fibre is realized on the polyphenyl thioether filter material surface, though this kind method is feasible, but complex manufacturing, and in the use procedure of PPS filtrate, dust removal machine air pulse deashing is arranged, make the particle of coating easily come off, do not reach the effect of long-term oxidation resistance, and the emulsion that is coated in the surface makes the filter efficiency of filtrate reduce, and uses nano particle to make dispersion emulsion to have increased cost.
Summary of the invention
The object of the present invention is to provide the polyphenylene sulfide fibre that a kind of cost is low, production technology is simple, oxidative resistance is excellent.
The present invention adopts phosphite ester kind antioxidant, be obstructed kind antioxidant and thiopropionate are that antioxidant combination forms antioxidant, make the polyphenylene sulfide fibre that adds after above-mentioned antioxidant under 220 ℃ after 48 weeks fracture strengths reach 1.80～2.20cN/dtex.
Technical solution of the present invention is: a kind of oxidative resistance polyphenylene sulfide fibre, containing with respect to the Hinered phenols antioxidant B of phosphite ester kind antioxidant A, the 0.1wt%～2.5wt% of fiber total amount 0.1wt%～3.0wt% and the thiopropionate of 0.1wt%～2.0wt% in this polyphenylene sulfide fibre is antioxidant C, and surplus is polyphenylene sulfide; After 48 weeks under 220 ℃, the fracture strength of this polyphenylene sulfide fibre reaches 1.80～2.20cN/dtex.Above-mentioned phosphite ester kind antioxidant A has structural formula shown in formula 1:
Wherein, R
1, R
2, R
3Be respectively protium or carbon number and be 1～5 alkyl.
Above-mentioned phosphite ester kind antioxidant A preferably has structural formula shown in formula 6, its chemistry 3,9-two (2,4-dicumyl phenoxy group)-2,4,8 by name, and 10-four oxa-s-3,9-two phospha spiral shell [5.5] hendecanes, commodity are called S-9228, and No. CAS is 154862-43-8,
Above-mentioned phosphite ester kind antioxidant A has structural formula shown in 2:
The chemistry of structural formula shown in formula 2 is called four (2,4-di-tert-butylphenols)-4,4 '-xenyl diphosphites, and commodity are called THP-EPQ, and No. CAS is 119345-01-6.
In polyphenylene sulfide fibre of the present invention, the addition of phosphite ester kind antioxidant A is 0.1wt%～3.0wt% with respect to the fiber total amount, preferred 0.5wt%～2.0wt%, if the addition of phosphite ester kind antioxidant A is less than 0.1wt%, the non-oxidizability effect of polyphenylene sulfide fibre is not improved; If the addition of phosphite ester kind antioxidant A more than 3.0wt%, in spinning process, fracture of wire occurs under the lateral blowing effect, the phenomenon of silk of wafing, and has increased cost.
Above-mentioned hindered phenol anti-oxidants B has structural formula shown in formula 3:
Wherein, R
4Be alkyl, R
5Be alkyl, R
6Be the group that C connects, R
7Be hydrogen or alkyl.Hindered phenol anti-oxidants related in the present invention can better be brought into play the effect of Mulberry Extract due to its special structure, makes it no longer participate in oxidation cycle.
Above-mentioned hindered phenol anti-oxidants B preferably has structural formula shown in formula 4 or has structural formula shown in formula 5.The chemical name of formula 4 is 1,3,5-three (3,5-di-tert-butyl-4-hydroxyl benzyl) isocyanuric acid, and commodity are called antioxidant 3114, and No. CAS is 27676-62-6, and molecular weight M is 784.1; The chemistry of formula 5 is called triethylene glycol ether-two (3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl) propionic ester, and commodity are called XH-245, and No. CAS is 36443-68-2.
In polyphenylene sulfide fibre of the present invention, the addition of Hinered phenols antioxidant B is 0.1wt%～2.5wt% with respect to the fiber total amount, preferred 0.5wt%～1.5wt%, if the addition of Hinered phenols antioxidant B is less than 0.1wt%, do not reach the effect of non-oxidizability; If the addition of Hinered phenols antioxidant B is more than 2.5wt%, in spinning process, the fiber that spinnerets spues fracture of wire occurs under the lateral blowing effect, the phenomenon of the silk that wafts.
Above-mentioned thiopropionate is the preferred pentaerythrite four of antioxidant C (3-lauryl thiopropionate), has structural formula shown in formula 7, and its commodity are called TH-412S, and molecular weight M is 1161.95,
In polyphenylene sulfide fibre of the present invention, thiopropionate is that the addition of antioxidant C is 0.1wt%～2.0wt% with respect to the fiber total amount, preferred 0.3wt%～1.0wt%, thiopropionate is that the addition of antioxidant C is too much, can make the spinning properties variation, addition is few, DeGrain.
Add simultaneously the oxidant of above three kinds of components in polyphenylene sulfide fibre of the present invention, due to phosphite ester kind antioxidant A and Hinered phenols antioxidant B very universal, therefore and the collaborative efficient of thiopropionate kind antioxidant C and Hinered phenols antioxidant B is high, adds simultaneously the non-oxidizability effect of the polyphenylene sulfide fibre that three kinds of components obtain excellent.
The manufacture method of oxidative resistance polyphenylene sulfide fibre of the present invention for add above-mentioned phosphite ester kind antioxidant by mixing mode in the polyphenylene sulfide, be obstructed kind antioxidant and thiopropionate be antioxidant, the preferred 2 axle mixing rolls of mixing roll.Melting temperature 300～320 ℃, again by spinning, stretching obtains the resistance to oxidation polyphenylene sulfide fibre, wherein spinning temperature is 300～330 ℃.
The filtrate that is made by oxidative resistance polyphenylene sulfide fibre of the present invention is at 190 ℃ after lower 15 days, horizontal and vertical (radially and broadwise), and strength retention reaches more than 103%, and degree of stretching conservation rate reaches more than 23%; After 48 weeks under 220 ℃, the strength retention of this polyphenylene sulfide fibre is more than 38.9%, and degree of stretching conservation rate reaches more than 11.1%.The oxidative resistance that is polyphenylene sulfide fibre of the present invention is far superior to product in the past, and the polyphenylene sulfide of the present invention's production has, and cost is low, the simple characteristics of production technology.
The specific embodiment
By following examples and comparative example, the present invention is described in further detail.Physical property in embodiment is measured by following method.
[fracture strength]
The assay method of fibrous fracture intensity is namely on the filament stretching-machine, use lower clamp and vertically clamp a polyphenylene sulfide fibre of crossing with high-temperature process, to draw the speed of stretching to stretch as 20 ± 1mm/min, record fracture strength and the elongation at break of every fiber, every group of sample at least 35 times averaged.
[strength retention]
The computational methods of strength retention are the percentage of the white product of fracture strength duty (without the filament of the high-temperature process) intensity of the filament sample after high-temperature process.
[degree of stretching conservation rate]
The percentage of the length of the white product of length duty (without the filament of the high-temperature process) elongation of the elongate fiber the when computational methods of degree of stretching conservation rate are filament sample breakage after processing.
Embodiment 1
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 0.5wt%, the antioxidant 3114 of the overall fibre content that accounts for the 0.5wt% of overall fibre, TH-412S accounts for the 0.5wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.81cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 38.9%, and degree of stretching conservation rate is 11.1%.
Embodiment 2
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 0.5wt%, the antioxidant 3114 of the overall fibre content that accounts for the 1.5wt% of overall fibre, TH-412S accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.97cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 42.4%, and degree of stretching conservation rate is 12.0%.
Embodiment 3
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 0.5wt%, the antioxidant 3114 of the overall fibre content that accounts for the 2.5wt% of overall fibre, TH-412S accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.95cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 41.9%, and degree of stretching conservation rate is 11.3%.
Embodiment 4
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 2.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 0.5wt% of overall fibre, TH-412S accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.04cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 43.9%, and degree of stretching conservation rate is 12.1%.
Embodiment 5
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 2.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 1.5wt% of overall fibre, TH-412S accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.08cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 44.7%, and degree of stretching conservation rate is 12.3%.
Embodiment 6
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 2.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 2.5wt% of overall fibre, TH-412S accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.98cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 42.6%, and degree of stretching conservation rate is 11.9%.
Embodiment 7
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 3.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 0.5wt% of overall fibre, TH-412S accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.0cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 43.0%, and degree of stretching conservation rate is 12.0%.
Embodiment 8
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 3.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 1.5wt% of overall fibre, TH-412S accounts for the 0.5wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.02cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 43.4%, and degree of stretching conservation rate is 11.9%.
Embodiment 9
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the S-9228 content that accounts for 3.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 2.5wt% of overall fibre, TH-412S accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.08cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 44.7%, and degree of stretching conservation rate is 12.2%.
Embodiment 10
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant THP-EPQ, Hinered phenols antioxidant XH-245 and thiopropionate; Wherein the content of the THP-EPQ content that accounts for 3.0wt%, the XH-245 of the overall fibre content that accounts for 2.5wt%, the TH-412S of overall fibre accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.92cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 41.3%, and degree of stretching conservation rate is 11.6%.
Embodiment 11
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant THP-EPQ, Hinered phenols antioxidant XH-245 and thiopropionate; Wherein the content of the THP-EPQ content that accounts for 2.0wt%, the XH-245 of the overall fibre content that accounts for 1.5wt%, the TH-412S of overall fibre accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.06cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 44.3%, and degree of stretching conservation rate is 12.2%.
Embodiment 12
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant XH-245 and thiopropionate; Wherein the content of the S-9228 content that accounts for 2.0wt%, the XH-245 of the overall fibre content that accounts for 1.5wt%, the TH-412S of overall fibre accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.08cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 44.7%, and degree of stretching conservation rate is 12.0%.
Embodiment 13
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant S-9228, Hinered phenols antioxidant XH-245 and thiopropionate; Wherein the content of the S9228 content that accounts for 3.0wt%, the XH-245 of the overall fibre content that accounts for 2.5wt%, the TH-412S of overall fibre accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.94cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 41.7%, and degree of stretching conservation rate is 11.7%.
Embodiment 14
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant THP-EPQ, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the THP-EPQ content that accounts for 2.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 1.5wt% of overall fibre, TH-412S accounts for the 1.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 2.07cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 44.5%, and degree of stretching conservation rate is 12.1%.
Embodiment 15
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) phosphite ester kind antioxidant THP-EP, Hinered phenols antioxidant 3114 and thiopropionate; Wherein the content of the THP-EP content that accounts for 3.0wt%, the antioxidant 3114 of the overall fibre content that accounts for the 2.5wt% of overall fibre, TH-412S accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching obtains polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.89cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 40.6%, and degree of stretching conservation rate is 11.5%.
Comparative example 1
Do not add any antioxidant in polyphenylene sulfide (Mw=50800), through screw extruder blend granulation, drying is carried out spinning afterwards, stretching obtains polyphenylene sulfide fibre, with the polyphenylene sulfide fibre that makes after 48 weeks under 220 ℃, the fracture strength of polyphenylene sulfide fibre is 1.68cN/dtex, strength retention is 36.1%, and degree of stretching conservation rate is 10.2%.
Comparative example 2
Add phosphite ester kind antioxidant S-9228 in polyphenylene sulfide (Mw=50800); Wherein the content of S-9228 accounts for the 3.0wt% of overall fibre, through screw extruder blend granulation, drying is carried out spinning afterwards, stretching makes polyphenylene sulfide fibre, with the polyphenylene sulfide fibre that makes after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.79cN/dtex, strength retention is 38.5%, and degree of stretching conservation rate is 11.0%.
Comparative example 3
Add Hinered phenols antioxidant 3114 in polyphenylene sulfide (Mw=50800); Wherein the content of antioxidant 3114 accounts for the 1.5wt% of overall fibre, through screw extruder blend granulation, drying is carried out spinning afterwards, stretching makes polyphenylene sulfide fibre, with the polyphenylene sulfide fibre that makes after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.77cN/dtex, strength retention is 38.1%, and degree of stretching conservation rate is 10.6%.
Comparative example 4
Be antioxidant TH-412S to the middle interpolation of polyphenylene sulfide (Mw=50800) thiopropionate; Wherein the content of TH-412S accounts for the 2.0wt% of overall fibre.Through screw extruder blend granulation, carry out spinning after dry, stretching makes polyphenylene sulfide fibre, after 48 weeks under 220 ℃, the fracture strength that records this polyphenylene sulfide fibre is 1.70cN/dtex with the polyphenylene sulfide fibre that makes, strength retention is 36.5%, and degree of stretching conservation rate is 10.3%.
Table 1
Table 2
| Project | Embodiment 10 | Embodiment 11 |
| THP-EPQ(wt％) | 3.0 | 2.0 |
| XH-245(wt％) | 2.5 | 1.5 |
| TH-412S(wt％) | 2.0 | 1.0 |
| Fracture strength (cN/dtex) | 1.92 | 2.06 |
| Strength retention (%) | 41.3 | 44.3 |
| Degree of stretching conservation rate (%) | 11.6 | 12.2 |
Table 3
| Project | Embodiment 12 | Embodiment 13 |
| S-9228(wt％) | 2.0 | 3.0 |
| XH-245(wt％) | 1.5 | 2.5 |
| TH-412S(wt％) | 1.0 | 2.0 |
| Fracture strength (cN/dtex) | 2.08 | 1.94 |
| Strength retention (%) | 44.7 | 41.7 |
| Degree of stretching conservation rate (%) | 12.0 | 11.7 |
Table 4
| Project | Embodiment 14 | Embodiment 15 |
| THP-EPQ(wt％) | 2.0 | 3.0 |
| Antioxidant 3114 (wt%) | 1.5 | 2.5 |
| TH-412S(wt％) | 1.0 | 2.0 |
| Fracture strength (cN/dtex) | 2.07 | 1.89 |
| Strength retention (%) | 44.5 | 40.6 |
| Degree of stretching conservation rate (%) | 12.1 | 11.5 |
Table 5
| Project | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| S-9228(wt％) | 0 | 3.0 | 0 | 0 |
| Antioxidant 3114 (wt%) | 0 | 0 | 1.5 | 0 |
| TH-412S(wt％) | 0 | 0 | 0 | 2.0 |
| Fracture strength (cN/dtex) | 1.68 | 1.79 | 1.77 | 1.70 |
| Strength retention (%) | 36.1 | 38.5 | 38.1 | 36.5 |
| Degree of stretching conservation rate (%) | 10.2 | 11.0 | 10.6 | 10.3 |
Claims (8)
1. oxidative resistance polyphenylene sulfide fibre, it is characterized in that: containing with respect to the Hinered phenols antioxidant B of phosphite ester kind antioxidant A, the 0.1wt%～2.5wt% of fiber total amount 0.1wt%～3.0wt% and the thiopropionate of 0.1wt%～2.0wt% in this polyphenylene sulfide fibre is antioxidant C, and surplus is polyphenylene sulfide; After 48 weeks under 220 ℃, the fracture strength of this polyphenylene sulfide fibre reaches 1.80～2.20cN/dtex.
2. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: described phosphite ester kind antioxidant A has structural formula shown in formula 1:
R
1, R
2, R
3Be respectively protium or carbon number and be 1～5 alkyl.
3. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: described phosphite ester kind antioxidant A has structural formula shown in formula 2:
Formula 2.
4. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: described hindered phenol anti-oxidants B has structural formula shown in formula 3:
Wherein, R
4Be alkyl, R
5Be alkyl, R
6Be the group that C connects, R
7Be hydrogen or alkyl.
5. oxidative resistance polyphenylene sulfide fibre according to claim 4, it is characterized in that: described hindered phenol anti-oxidants B has structural formula shown in formula 4 or has structural formula shown in formula 5,
6. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: described thiopropionate is that antioxidant C is pentaerythrite four (3-lauryl thiopropionate).
7. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: after 48 weeks under 220 ℃, the strength retention of this polyphenylene sulfide fibre is more than 38.9%.
8. oxidative resistance polyphenylene sulfide fibre according to claim 1, it is characterized in that: after 48 weeks under 220 ℃, degree of the stretching conservation rate of this polyphenylene sulfide fibre reaches more than 11.1%.
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| CN108047493A (en) * | 2017-12-29 | 2018-05-18 | 天津利安隆新材料股份有限公司 | A kind of anti-oxidant compositions for nylon |
| KR101992446B1 (en) * | 2018-03-29 | 2019-06-25 | 주식회사 휴비스 | Noninflammable Sea-island Type Microfiber Having Good Touch |
| KR20200038089A (en) * | 2018-10-02 | 2020-04-10 | 주식회사 휴비스 | Dope Dyed Noninflammable Sea-island Type Microfiber |
| KR102115536B1 (en) * | 2018-10-02 | 2020-05-27 | 주식회사 휴비스 | Dope Dyed Noninflammable Sea-island Type Microfiber |
| KR20200047088A (en) * | 2018-10-26 | 2020-05-07 | 주식회사 휴비스 | Noninflammable and Splittable Microfiber |
| KR102124377B1 (en) * | 2018-10-26 | 2020-06-19 | 주식회사 휴비스 | Noninflammable and Splittable Microfiber |
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Application publication date: 20130605 |