CN105088410A - Preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn - Google Patents
Preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn Download PDFInfo
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- CN105088410A CN105088410A CN201510556791.0A CN201510556791A CN105088410A CN 105088410 A CN105088410 A CN 105088410A CN 201510556791 A CN201510556791 A CN 201510556791A CN 105088410 A CN105088410 A CN 105088410A
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Abstract
The invention discloses a preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn. The preparation technology of the PBT-regenerated PET modified stretch yarn comprises steps as follows: (1) washing mineral water bottles, removing non-PET materials, and preparing regenerated PET slices after crushing with a crusher, washing, drying and extrusion granulation; (2) placing the regenerated PET slices, nano powder and a coupling agent in a mixer, and performing extrusion granulation by a twin-screw extruder to obtain modified regenerated PET; (3) placing the modified regenerated PET, PBT, a compatilizer, an antioxidant and a toughening agent in the mixer for mixing in parts by weight, and performing extrusion granulation by the twin-screw extruder to prepare PBT-modified regenerated PET granules; (4) placing the PBT-modified regenerated PET granules in a screw type spinning machine for melt spinning, and after cooling, performing oiling, balancing, winding and drafting treatment to obtain the PBT-modified regenerated PET stretch yarn. The polymerized and modified PBT-regenerated PET stretch yarn prepared with the technology is excellent in elasticity and good in mechanical performance.
Description
Technical field
The present invention relates to PBT-PET copolyester technical field, particularly relate to a kind of preparation technology of PBT-regenerative PET modification elater.
Background technology
Polybutylene terephthalate (PBT) (PBT) and polyethylene terephthalate (PET) are two kinds of very important polyester materials, are widely used in the fields such as electronics, instrument and auto industry.Due to the difference of the two chemical structural formula, the performance of PBT and PET is caused to there is larger difference.
PBT has good durability, DIMENSIONAL STABILITY and good elasticity, and elasticity is by the impact of humidity; PBT and goods thereof soft, hygroscopicity, ABRASION RESISTANCE and fiber crimp are good, and have good dyeability; But PBT heat distortion temperature is lower, the dependence of the strength versus temperature of PBT is comparatively strong, and PBT price is far away higher than PET, so the use of PBT is subject to certain restrictions.PET is except the character with PBT, also have that Nai Gaore, not yielding variable color, fatigue resistance are good, case hardness high, and the cost of PET is well below PBT, has high cost performance, but the hygroscopicity of PET and dyeability poor, feel and resilience undesirable.The consumption figure of China's current PET beverage bottle is very high, and the regeneration of waste PET bottle, not only can reduce environmental pollution, and can turn waste into wealth.Waste PET bottle is reclaimed and prepares composite with the blended or modification by copolymerization of other macromolecular material, make it reach the index of high performance engineering plastics, can be used for injection moulding daily living article, industrial part and electronic apparatus working of plastics etc., have broad prospects.Therefore, PBT and regenerative PET copolymerization are prepared PBT-PET copolymer, takes into account the advantage of PBT and PET bi-material simultaneously, there is the comprehensive excellent properties of PBT and PET resin, its processing cost, lower than PBT, is a kind of excellent performance, new material that cost performance is higher.But, waste PET bottle is heated and easily degrades in regeneration process, its strand generation fracture causes molecular weight significantly to reduce, make it exist intrinsic viscosity coefficient is low, flow stability is poor, the demoulding is difficult, goods impact property difference etc. defect, elasticity and the mechanical performance of the PBT-PET modification by copolymerization material prepared thus decline all to some extent, limit the application of PBT-PET composite.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of preparation technology of PBT-regenerative PET modification by copolymerization elater, PBT-regenerative PET modification by copolymerization elater excellent spring, good mechanical property that this technique prepares.
For reaching this object, the present invention by the following technical solutions:
A preparation technology for PBT-modification regeneration PET elater, comprises the steps:
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) by regenerative PET cut into slices, account for regenerative PET chipping qualities mark be 5 ~ 10% nanometer grade powder, account for regenerative PET chipping qualities mark be 1 ~ 5% coupling agent be placed in batch mixer, control temperature is 160 ~ 200 DEG C, inflated with nitrogen mixing 0.5 ~ 1h, obtains modification regeneration PET through double screw extruder extruding pelletization;
(3) by weight, the modification regeneration PET of 20 ~ 60 parts, the PBT of 30 ~ 70 parts, the compatilizer of 1 ~ 5 part, the antioxidant of 0.1 ~ 1 part, the flexibilizer of 1 ~ 5 part are inserted in batch mixer and mixed, control temperature is 200 ~ 270 DEG C, mixing 1 ~ 3h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(4) PBT-modification regeneration PET particle step (3) prepared is inserted screw type spinning machine and is carried out melt spinning, after cooling, carries out oiling, balances, reels, drawing-off process, obtains PBT-modification regeneration PET elater.
The present invention ensures that constant product quality selects the Packaging Bottle of the mineral water class reclaimed.It is high that such Packaging Bottle has product viscosity, and the market sales volume is large, easily carries out the feature such as distinguishing from other Packaging Bottle.The process concrete steps of mineral water bottle are: mineral water bottle is cleaned and removed the non-PET material such as bottle cap, label, by crusher in crushing, then clean, dry, extruding pelletization, obtained regenerative PET, cut into serving pieces.
Nano-powder is also nano particle, refers generally to the ultrafine particle of size between 1-100nm.Its yardstick is greater than cluster and is less than general particulate.The form of nano particle has spherical, tabular, bar-shaped, horn shape, spongy etc., and the composition making nano particle can be metal, can be oxide, can also be other various compounds.
In step (2), described nanometer grade powder is CaCO
3, CaSO
4, CaSiO
3in one or at least two kinds.Preferably, the diameter of described nanometer grade powder is 5 ~ 50nm.
In step (2), described coupling agent is one in aluminate coupling agent, titanate coupling agent, silane coupler or at least two kinds.
Also comprise the step of dry modification regeneration PET and PBT before described step (3), the temperature of described drying is 110 ~ 140 DEG C, and the time of described drying is 1 ~ 4h.
In step (3), described compatilizer is one in PCTG, PETG, maleic anhydride graft styrene, acrylonitrile-styrene-maleic anhydride terpolymer, styrene-acrylonitrile copolymer-glycidyl methacrylate terpolymer or at least two kinds.Described antioxidant is one in arylamine class, phosphite ester amine, zinc stearate, organic silicone oil or at least two kinds.Described flexibilizer is thermoplastic polyester elastomer.
In step (4), the temperature of described spinning is 240 ~ 280 DEG C, and the speed of spinning of described spinning is 1000 ~ 1500m/min.
Compared with prior art, beneficial effect of the present invention is: the present invention will reclaim mineral water bottle through broken crusher machine, clean, dry, regenerative PET section is prepared after extruding pelletization, modification regeneration PET is prepared with nano powder modified regenerative PET section, through regenerative PET and the PBT of modification, compatilizer, antioxidant, extrude after flexibilizer mixing and prepare PBT-modification regeneration PET particle, adding of nano-powder, the heat resistance of regenerative PET is improved, improve with the compatibility of PBT, make impact strength and the TENSILE STRENGTH of PBT-modification regeneration PET, the property indices such as bending strength are all improved, PBT-modification regeneration PET elater is prepared again through process such as spinning, the elater elastic performance prepared thus is excellent, good mechanical property.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below by detailed description of the invention.
As no specific instructions, various raw material of the present invention all can commercially availablely be buied, or prepares according to the conventional method of this area.
Comparative example
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) first 120 DEG C of dry regenerative PET sections, PBT2h, by weight, the modification regeneration PET of 50 parts, the PBT of 60 parts, the maleic anhydride graft styrene of 3 parts, the phosphite ester amine of 0.3 part, the thermoplastic polyester elastomer of 4 parts are inserted in batch mixer and mixed, control temperature is 240 DEG C, mixing 2h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(3) PBT-modification regeneration PET particle step (2) prepared is inserted screw type spinning machine and is carried out melt spinning, the temperature of spinning is 260 DEG C, spin speed for 1400m/min, after cooling, carry out oiling, balance, reel, drawing-off process, obtain PBT-modification regeneration PET elater.
Embodiment 1
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) by regenerative PET cut into slices, account for regenerative PET chipping qualities mark be 5% diameter be the CaCO of 30nm
3powder, account for regenerative PET chipping qualities mark be 4% aluminate coupling agent be placed in batch mixer, control temperature is 180 DEG C, and inflated with nitrogen mixing 0.5h, obtains modification regeneration PET through double screw extruder extruding pelletization;
(3) first 120 DEG C of dry modification regeneration PET, PBT2h, by weight, the modification regeneration PET of 50 parts, the PBT of 60 parts, the maleic anhydride graft styrene of 3 parts, the phosphite ester amine of 0.3 part, the thermoplastic polyester elastomer of 4 parts are inserted in batch mixer and mixed, control temperature is 240 DEG C, mixing 2h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(4) PBT-modification regeneration PET particle step (3) prepared is inserted screw type spinning machine and is carried out melt spinning, the temperature of spinning is 260 DEG C, spin speed for 1400m/min, after cooling, carry out oiling, balance, reel, drawing-off process, obtain PBT-modification regeneration PET elater.
Embodiment 2
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) by regenerative PET cut into slices, account for regenerative PET chipping qualities mark be 9% diameter be the CaSiO of 20nm
3powder, account for regenerative PET chipping qualities mark be 3% titanate coupling agent be placed in batch mixer, control temperature is 200 DEG C, and inflated with nitrogen mixing 1h, obtains modification regeneration PET through double screw extruder extruding pelletization;
(3) first 110 DEG C of dry modification regeneration PET, PBT1h, by weight, the modification regeneration PET of 30 parts, the PBT of 50 parts, the acrylonitrile-styrene-maleic anhydride terpolymer of 5 parts, the organic silicone oil of 0.5 part, the thermoplastic polyester elastomer of 5 parts are inserted in batch mixer and mixed, control temperature is 260 DEG C, mixing 3h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(4) PBT-modification regeneration PET particle step (3) prepared is inserted screw type spinning machine and is carried out melt spinning, the temperature of spinning is 240 DEG C, spin speed for 1200m/min, after cooling, carry out oiling, balance, reel, drawing-off process, obtain PBT-modification regeneration PET elater.
Embodiment 3
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) by regenerative PET cut into slices, account for regenerative PET chipping qualities mark be 10% diameter be the CaSO of 40nm
4powder, account for regenerative PET chipping qualities mark be 5% aluminate coupling agent be placed in batch mixer, control temperature is 180 DEG C, and inflated with nitrogen mixing 1h, obtains modification regeneration PET through double screw extruder extruding pelletization;
(3) first 140 DEG C of dry modification regeneration PET, PBT1h, by weight, the modification regeneration PET of 50 parts, the PBT of 70 parts, the PETG of 4 parts, the phosphite ester amine of 0.8 part, the thermoplastic polyester elastomer of 5 parts are inserted in batch mixer and mixed, control temperature is 260 DEG C, mixing 3h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(4) PBT-modification regeneration PET particle step (3) prepared is inserted screw type spinning machine and is carried out melt spinning, the temperature of spinning is 270 DEG C, spin speed for 1400m/min, after cooling, carry out oiling, balance, reel, drawing-off process, obtain PBT-modification regeneration PET elater.
Carry out Performance Detection to comparative example of the present invention, PBT-modification regeneration PET that embodiment 1 ~ 3 obtains and the elater that is prepared into thereof, testing result is as shown in table 1.Wherein, Mechanics Performance Testing is according to ASTM standard.
Table 1
The PBT-modification regeneration PET elater elastic performance that technique of the present invention prepares is excellent, good mechanical property.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of auxiliary element, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (9)
1. a preparation technology for PBT-modification regeneration PET elater, is characterized in that, comprise the steps:
(1) mineral water bottle is cleaned remove non-PET material, through crusher in crushing, clean, dry, prepare regenerative PET section after extruding pelletization;
(2) by regenerative PET cut into slices, account for regenerative PET chipping qualities mark be 5 ~ 10% nanometer grade powder, account for regenerative PET chipping qualities mark be 1 ~ 5% coupling agent be placed in batch mixer, control temperature is 160 ~ 200 DEG C, inflated with nitrogen mixing 0.5 ~ 1h, obtains modification regeneration PET through double screw extruder extruding pelletization;
(3) by weight, the modification regeneration PET of 20 ~ 60 parts, the PBT of 30 ~ 70 parts, the compatilizer of 1 ~ 5 part, the antioxidant of 0.1 ~ 1 part, the flexibilizer of 1 ~ 5 part are inserted in batch mixer and mixed, control temperature is 200 ~ 270 DEG C, mixing 1 ~ 3h, prepares PBT-modification regeneration PET particle through double screw extruder extruding pelletization;
(4) PBT-modification regeneration PET particle step (3) prepared is inserted screw type spinning machine and is carried out melt spinning, after cooling, carries out oiling, balances, reels, drawing-off process, obtains PBT-modification regeneration PET elater.
2. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, it is characterized in that, in step (2), described nanometer grade powder is CaCO
3, CaSO
4, CaSiO
3in one or at least two kinds.
3. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 2, it is characterized in that, the diameter of described nanometer grade powder is 5 ~ 50nm.
4. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, is characterized in that, in step (2), described coupling agent is one in aluminate coupling agent, titanate coupling agent, silane coupler or at least two kinds.
5. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, it is characterized in that, also comprise the step of dry modification regeneration PET and PBT before described step (3), the temperature of described drying is 110 ~ 140 DEG C, and the time of described drying is 1 ~ 4h.
6. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, it is characterized in that, in step (3), described compatilizer is one in PCTG, PETG, maleic anhydride graft styrene, acrylonitrile-styrene-maleic anhydride terpolymer, styrene-acrylonitrile copolymer-glycidyl methacrylate terpolymer or at least two kinds.
7. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, is characterized in that, in step (3), described antioxidant is one in arylamine class, phosphite ester amine, zinc stearate, organic silicone oil or at least two kinds.
8. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, it is characterized in that, in step (3), described flexibilizer is thermoplastic polyester elastomer.
9. the preparation technology of a kind of PBT-modification regeneration PET elater according to claim 1, is characterized in that, in step (4), the temperature of described spinning is 240 ~ 280 DEG C, and the speed of spinning of described spinning is 1000 ~ 1500m/min.
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| CN113233825A (en) * | 2021-06-03 | 2021-08-10 | 金华职业技术学院 | Recycled concrete beneficial to improving impermeability and preparation method thereof |
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| CN113233825A (en) * | 2021-06-03 | 2021-08-10 | 金华职业技术学院 | Recycled concrete beneficial to improving impermeability and preparation method thereof |
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