CN105177732A - Method for filtering and deaerating high-viscosity spinning solution during melt direct spinning - Google Patents
Method for filtering and deaerating high-viscosity spinning solution during melt direct spinning Download PDFInfo
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- CN105177732A CN105177732A CN201510688805.4A CN201510688805A CN105177732A CN 105177732 A CN105177732 A CN 105177732A CN 201510688805 A CN201510688805 A CN 201510688805A CN 105177732 A CN105177732 A CN 105177732A
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Abstract
The invention relates to a method for filtering and deaerating a high-viscosity spinning solution during melt direct spinning. The method comprises steps as follows: the high-viscosity spinning solution used in a melt direct spinning method is filtered with a filter net with 200-300 meshes and then is subjected to pressure filtration sequentially with a filter net with 300-400 meshes and a filter net with 400-500 meshes. According to the method, the spinning solution is subjected to multiple pressure filtration sequentially by the filter nets with increasingly more meshes, all impurities in the spinning solution are sufficiently removed, the spinning solution is completely filtered, the situation that a spinning nozzle is blocked by aggregates formed by flame retardants and PET (polyethylene terephthalate) in the spinning process is avoided to a great extent, and great loss of the spinning solution is avoided in the filtering process. Besides, the method has the advantages of economical performance, environmental protection, reaction controllability, short reaction time, simple equipment and the like and has greater industrial application value.
Description
Technical field
The invention belongs to the filtration deaeration field of spinning solution, particularly a kind of filtration defoaming method of fused mass directly spinning medium-high viscosity spinning solution.
Background technology
Polyster fibre occupies huge share in the market, its intensity is high, good springiness, heat-resisting, fast light and resistance to acids and bases is good, there is good processability and Yi Fangxing, can purely spin, blending or intertexture, its fabric washable and wearable, ironing and anti-crease, spin in clothes, family, decorate, industry with etc. field be widely used.
Along with terylene spinning is spun to fused mass directly spinning development by section, melt direct spinning on-line adding technology realizes the modification of polyster fibre, the main path of functionalization by becoming.The equipment of melt direct spinning on-line adding technology is transformed to form on fused mass directly spinning equipment, can produce multiple differential, functional polyester product, and the function admirable such as product quality is high, fastness is good, water-fastness, wear-resisting.The key technology of fused mass directly spinning is accurate-metering in online interpolation and dispersed, is also the key technology affecting modified polyester fibre performance.Many experts and scholar's active research and explore this technology, deliver Patents and paper.Its main direction of studying is: based on the melt direct spinning on-line adding technology of spinnerets (without blender); Based on the melt direct spinning on-line adding technology of dynamic mixer; Based on the melt direct spinning on-line adding technology of static mixer; Based on the melt direct spinning on-line adding technology etc. of combined type blender.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of filtration defoaming method of fused mass directly spinning method medium-high viscosity spinning solution, the mode of the method pressure filtration progressively filters out the impurity in spinning melt, can play continous mode deaeration effect to spinning melt simultaneously; , there is larger industrial application value in the advantage such as the method has economic environmental protection, reacts controlled, the reaction time is short, device therefor is simple.
The filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution of the present invention, comprise: by fused mass directly spinning method medium-high viscosity spinning solution 200-300 object filter screen filtration, then successively through the screen pack pressure filtration of 300-400 object and the pressure filtration of 400-500 object screen pack; In the process of wherein pressure filtration, applied pressure is 1 ~ 5MPa.
The preparation of described high viscosity spinning solution comprises: in two bar apparatus, is added by terephthalic acid (TPA) PTA and ethylene glycol EG, direct esterification copolymerization, add fire retardant, obtain high viscosity spinning solution after blended at second segment material mouth from the first paragraph material mouth of twin-screw.
The filtration deaeration of described high viscosity spinning solution completes the 3rd section of twin-screw.
Described high viscosity spinning solution carries out super drawing, HEAT SETTING rolling after filtering deaeration again after the 4th section of special deaeration screw rod, obtains high-strength fire-retarding terylene.
Described PTA and EG mol ratio is 1:1.1-1:1.2.
Described fire retardant is 2-carboxyethyl phenyl phosphinic acid, polyphosphoric acid amine or antimony pentoxide.
Described fire retardant addition is the 2-8% of PTA and EG gross mass.
Described pressure filtration refers to by applying pressure to Sealing Arrangement, makes spinning melt through filter screen, thus reaches the effect of filtration.
The screw slenderness ratio of described twin screw device is 1:42 ~ 1:64, and screw speed is 150 ~ 200rpm, and extruder temperature is 150-250 DEG C.
Described twin-screw spinnerets hole count is 500 ~ 3000, and aperture is 0.1 ~ 0.4mm.
Described high power adds the one-level drawing temperature 60 ~ 100 DEG C of hot-stretch, draft ratio 1 ~ 3 times, secondary drawing temperature 60 ~ 100 DEG C, draft ratio 1 ~ 5 times, three grades of drawing temperatures 60 ~ 100 DEG C, draft ratio 1 ~ 5 times.
Described HEAT SETTING tension force controls at 0.1 ~ 5kgf/cm, and heat setting temperature is 150 ~ 200 DEG C.
beneficial effect
(1) method of the present invention is passed through by dredging close multiple tracks pressure filtration, all impurity in abundant removal spinning melt and fire retardant aggregate, spinning melt is filtered thoroughly, from avoiding fire retardant to a great extent when blended with PET because the fire retardant aggregate of blended good not formation makes the spinning head of spinning process block;
(2) method of the present invention combines with the polymerization of spinning melt, and spinning melt can not be made in polymerization, filtration, de-aeration to suffer very large loss;
(3) the economic environmental protection of method of the present invention, react controlled, the advantage such as the reaction time is short, device therefor is simple, there is larger industrial application value.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.1, and with direct esterification copolymerization, and add fire retardant 2-carboxyethyl phenyl phosphinic acid at screw rod second segment material mouth, quality is 2% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 200 object filter screen filtration, and then successively through 300 object screen pack pressure filtrations and 500 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 2MPa; Super drawing is carried out again, one-level drawing temperature 60 DEG C, draft ratio 1 times, secondary drawing temperature 60 DEG C, draft ratio 1 times, three grades of drawing temperatures 60 DEG C, draft ratio 1 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 0.1kgf/cm, and heat setting temperature is 150 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 6.4cN/dtex, elongation at break is 11.5%, limited oxygen index is 35%.
Embodiment 2
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.2, and with direct esterification copolymerization, and add fire retardant 2-carboxyethyl phenyl phosphinic acid at screw rod second segment material mouth, quality is 8% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 230 object filter screen filtration, and then successively through 325 object screen pack pressure filtrations and 450 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 1MPa; Super drawing is carried out again, one-level drawing temperature 100 DEG C, draft ratio 1 times, secondary drawing temperature 100 DEG C, draft ratio 2 times, three grades of drawing temperatures 100 DEG C, draft ratio 3 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 5kgf/cm, and heat setting temperature is 200 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 7.2cN/dtex, elongation at break is 15.1%, limited oxygen index is 38.5%.
Embodiment 3
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.15, and with direct esterification copolymerization, and add fire retardant polyphosphoric acid amine at screw rod second segment material mouth, quality is 6% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 270 object filter screen filtration, and then successively through 350 object screen pack pressure filtrations and 480 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 5MPa; Super drawing is carried out again, one-level drawing temperature 80 DEG C, draft ratio 1 times, secondary drawing temperature 90 DEG C, draft ratio 2 times, three grades of drawing temperatures 100 DEG C, draft ratio 3 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 3kgf/cm, and heat setting temperature is 180 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 8.1cN/dtex, elongation at break is 13.5%, limited oxygen index is 39.7%.
Embodiment 4
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.16, and with direct esterification copolymerization, and add fire retardant polyphosphoric acid amine at screw rod second segment material mouth, quality is 4% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 250 object filter screen filtration, and then successively through 350 object screen pack pressure filtrations and 500 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 3MPa; Super drawing is carried out again, one-level drawing temperature 60 DEG C, draft ratio 1 times, secondary drawing temperature 70 DEG C, draft ratio 3 times, three grades of drawing temperatures 90 DEG C, draft ratio 5 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 2kgf/cm, and heat setting temperature is 170 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 8.1cN/dtex, elongation at break is 13.5%, limited oxygen index is 39.3%.
Embodiment 5
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.13, and with direct esterification copolymerization, and add fire retardant antimony pentoxide at screw rod second segment material mouth, quality is 2% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 270 object filter screen filtration, and then successively through 325 object screen pack pressure filtrations and 400 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 4MPa; Super drawing is carried out again, one-level drawing temperature 80 DEG C, draft ratio 1 times, secondary drawing temperature 90 DEG C, draft ratio 2 times, three grades of drawing temperatures 100 DEG C, draft ratio 3 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 2.5kgf/cm, and heat setting temperature is 190 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 7.3cN/dtex, elongation at break is 14.6%, limited oxygen index is 35.9%.
Embodiment 6
Terephthalic acid (TPA) and ethylene glycol are added from twin-screw first paragraph material mouth, PTA and EG mol ratio is 1:1.12, and with direct esterification copolymerization, and add fire retardant antimony pentoxide at screw rod second segment material mouth, quality is 7% of PTA and EG gross mass; Fire retardant and PET are after blended, and in screw rod the 3rd section 230 object filter screen filtration, and then successively through 300 object screen pack pressure filtrations and 500 object screen pack pressure filtrations, the pressure of wherein pressure filtration is 3MPa; Super drawing is carried out again, one-level drawing temperature 80 DEG C, draft ratio 2 times, secondary drawing temperature 90 DEG C, draft ratio 3 times, three grades of drawing temperatures 100 DEG C, draft ratio 4 times after the 4th section of special deaeration screw rod; HEAT SETTING tension force controls at 4.5kgf/cm, and heat setting temperature is 185 DEG C, and last HEAT SETTING is wound into high-strength fire-retarding terylene, and fracture strength is 6.9cN/dtex, elongation at break is 13.9%, limited oxygen index is 38.6%.
Claims (7)
1. the filtration defoaming method of a fused mass directly spinning method medium-high viscosity spinning solution, comprise: by fused mass directly spinning method medium-high viscosity spinning solution 200-300 object filter screen filtration, then successively through the screen pack pressure filtration of 300-400 object and the pressure filtration of 400-500 object screen pack; In the process of wherein pressure filtration, applied pressure is 1 ~ 5MPa.
2. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to claim 1, it is characterized in that, the preparation of described high viscosity spinning solution comprises: in twin screw device, terephthalic acid (TPA) PTA and ethylene glycol EG is added from the first paragraph material mouth of twin-screw, direct esterification copolymerization, add fire retardant at second segment material mouth, after blended, obtain high viscosity spinning solution.
3. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to claim 2, is characterized in that, the filtration deaeration of described high viscosity spinning solution completes the 3rd section of twin-screw.
4. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to Claims 2 or 3, it is characterized in that, the screw slenderness ratio of described twin screw device is 1:42 ~ 1:64, and screw speed is 150 ~ 200rpm, and extruder temperature is 150-250 DEG C; Twin-screw spinnerets hole count is 500 ~ 3000, and aperture is 0.1 ~ 0.4mm.
5. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to claim 2, it is characterized in that, described PTA and EG mol ratio is 1:1.1-1:1.2.
6. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to claim 2, it is characterized in that, the consumption of described fire retardant is the 2-8% of PTA and EG gross mass.
7. the filtration defoaming method of a kind of fused mass directly spinning method medium-high viscosity spinning solution according to claim 2 or 6, it is characterized in that, described fire retardant is 2-carboxyethyl phenyl phosphinic acid, polyphosphoric acid amine or antimony pentoxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510688805.4A CN105177732A (en) | 2015-10-21 | 2015-10-21 | Method for filtering and deaerating high-viscosity spinning solution during melt direct spinning |
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| CN201510688805.4A CN105177732A (en) | 2015-10-21 | 2015-10-21 | Method for filtering and deaerating high-viscosity spinning solution during melt direct spinning |
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Citations (6)
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| US20100048853A1 (en) * | 2006-07-10 | 2010-02-25 | Sabic Innovative Plastics, Ip B.V. | Polyetherimide polymer for use as a high heat fiber material |
| CN102199807A (en) * | 2011-03-29 | 2011-09-28 | 浙江古纤道新材料股份有限公司 | Method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns |
| CN104294393A (en) * | 2013-07-17 | 2015-01-21 | 福建百宏聚纤科技实业有限公司 | A processing process of high-modulus low-shrinkage high-colour-fastness polyester filament yarn by direct melt spinning and real-time injection |
| CN104294397A (en) * | 2013-07-17 | 2015-01-21 | 福建百宏聚纤科技实业有限公司 | Manufacturing technology of dacron glossy special-shaped semi-elastic drafting long wire |
| CN104593878A (en) * | 2015-01-01 | 2015-05-06 | 浙江四通化纤有限公司 | Self-sealing full-automatic filter for carpet silk melt spinning and filter method for self-sealing full-automatic filter |
| CN204325553U (en) * | 2014-12-02 | 2015-05-13 | 浦江县宏源实业有限公司 | A kind of Novel filtration net arrangement |
-
2015
- 2015-10-21 CN CN201510688805.4A patent/CN105177732A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100048853A1 (en) * | 2006-07-10 | 2010-02-25 | Sabic Innovative Plastics, Ip B.V. | Polyetherimide polymer for use as a high heat fiber material |
| CN102199807A (en) * | 2011-03-29 | 2011-09-28 | 浙江古纤道新材料股份有限公司 | Method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns |
| CN104294393A (en) * | 2013-07-17 | 2015-01-21 | 福建百宏聚纤科技实业有限公司 | A processing process of high-modulus low-shrinkage high-colour-fastness polyester filament yarn by direct melt spinning and real-time injection |
| CN104294397A (en) * | 2013-07-17 | 2015-01-21 | 福建百宏聚纤科技实业有限公司 | Manufacturing technology of dacron glossy special-shaped semi-elastic drafting long wire |
| CN204325553U (en) * | 2014-12-02 | 2015-05-13 | 浦江县宏源实业有限公司 | A kind of Novel filtration net arrangement |
| CN104593878A (en) * | 2015-01-01 | 2015-05-06 | 浙江四通化纤有限公司 | Self-sealing full-automatic filter for carpet silk melt spinning and filter method for self-sealing full-automatic filter |
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Application publication date: 20151223 |