CN103497348B - A kind of preparation method of environment-friendly type plastic film PP Pipe Compound - Google Patents
A kind of preparation method of environment-friendly type plastic film PP Pipe Compound Download PDFInfo
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- CN103497348B CN103497348B CN201310423322.2A CN201310423322A CN103497348B CN 103497348 B CN103497348 B CN 103497348B CN 201310423322 A CN201310423322 A CN 201310423322A CN 103497348 B CN103497348 B CN 103497348B
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Abstract
The present invention relates to a kind of preparation method of environment-friendly type plastic film PP Pipe Compound, the steps include: (1) PBS pellet to be put into PE bag, after being filled with nitrogen protection, seal with sealing machine; (2) the PBS pellet sealed is carried out cross-linking radiation, obtain environment-friendly type plastic film PP Pipe Compound.The present invention adopts NEW TYPE OF COMPOSITE modification technology, adds reagent few, and environment-protecting asepsis; Production technique simplifies, it is mainly manifested in: use the cross-linking modified NEW TYPE OF COMPOSITE modification technology combined with cross-linking radiation first, after only with the addition of innocuous agents-benzoyl peroxide, carry out physics radiation to be cross-linked, radiation dose is 0.5 ~ 50kGy, and modified melt strength improves, and solves PBS melt strength low, cannot the problem of blowfilm shaping, fill up the blank that PBS film and goods thereof carry out suitability for industrialized production.
Description
Technical field
The invention belongs to biodegradable material field, especially a kind of preparation method of environment-friendly type plastic film PP Pipe Compound.
Background technology
Poly butylene succinate (hereinafter referred to as PBS) is good full-biodegradable material, and the performance of poly butylene succinate (PBS), between polyethylene and polypropylene, can directly use as plastic working.But PBS is crystalline polymer, the height of degree of crystallinity, the difference of crystal habit and crystalline structure will affect the performance of PBS, thus affect its application on packing articles.In addition, one of shortcoming of PBS is that melt viscosity and melt strength are low, and fragility is comparatively large simultaneously, hinders the application of PBS at packaging field, can not carry out forming process, greatly hinder the application of PBS by the technique such as curtain coating, blowing.
Compared with general-purpose plastics, PBS production cost is higher, also its expansive approach as full-biodegradable material is limited to a certain extent, some products are that PBS uses poisonous isocyanates as chainextender, or with other nondegradable macromolecular material blending and modifyings, with the addition of other auxiliary agents a lot, melt strength improves, but have impact on its use in a lot of fields such as food product pack.
Through retrieval, two sections of patent documentations relevant to the application are found, wherein, publication number is that the Chinese patent of CN1687210 discloses a kind of proprietary material height printing opacity height insulation environment-acceptable plastics film PP Pipe Compound being widely used in the plastics such as the production of the synthetic resins such as polyethylene, polypropylene plastics, packing film, mulch film, hollow piece, sheet material, tubing, is be made up by weight ratio of polyethylene, super-fine talc, softening agent, industrial white oil, coupling agent, oxidation inhibitor;
Publication number is the preparation method that the Chinese patent of CN102336992A discloses a kind of special material for fluorine-containing plastic film.Formula of special material is: polyvinylidene difluoride (PVDF) 50 ~ 85 weight part, enhancing resin 5 ~ 30 weight part, mineral filler 5 ~ 15 weight part, nano-sized filler 5 ~ 15 weight part, mobility properties-correcting agent 0.5 ~ 5 weight part, thermally-stabilised auxiliary agent 0.1 ~ 2 weight part, be added in mixing and blending machine, at room temperature with the rotating speed of per minute 50 ~ 1000 turns mixing 10 ~ 40 minutes, then melt extruded at 170 ~ 230 DEG C by twin screw extruder, cool, dry, pelletizing, obtain PP Pipe Compound particle.
Through contrast, the application is prepared into degradation plastic film using full-biodegradable material PBS as raw material, so the application and above-mentioned patent documentation have relatively big difference.
Summary of the invention
The object of the invention is to overcome prior art weak point, the preparation method of the environment-friendly type plastic film PP Pipe Compound that a kind of technique is simple, modified effect is good is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
A preparation method for environment-friendly type plastic film PP Pipe Compound, the steps include:
(1) PBS pellet is put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(2) the PBS pellet sealed is carried out cross-linking radiation.
And, after being mixed with benzoyl peroxide by the PBS pellet that step is (1) described, then put into dual-screw-stem machine forcing machine melt blending, extrude, granulation, drying, by benzoyl peroxide, chemical modification is carried out to PBS pellet.
And described PBS pellet and benzoyl peroxide weight ratio are 100:0 ~ 1.
And described cross-linking radiation method is: at normal temperatures, under the PBS pellet tiling in PE bag is placed on cobalt source device, produces gamma-rays by cobalt source and directly irradiation is carried out to PBS pellet.
And, after the radiation crosslinking that step is (2) described, blown film is carried out to PBS pellet, the method is: add in inflation film manufacturing machine by PBS pellet good for irradiation, inflation film manufacturing machine temperature is set as 140 ~ 160 DEG C, speed setting is 30r/min, and blow-up ratio 1.5, proceeds as follows successively: hopper material loading, material plasticizing are extruded, inflation draws, vane cools, the traction of herringbone clamping plate, take off roll, corona treatment, film take-up.
And (1) described PBS pellet purity is fusing point to step is 108 DEG C, and density is 1.26g/cm
3.
And step is described twin screw extruder (1), each working zone temperature is all set as 150 DEG C, and rotating speed is 50r/min.
And described cobalt source is Co60.
And, described Co60 dosage range 0.5 ~ 50kGy.
Advantage of the present invention and positively effect are:
1, the present invention adopts NEW TYPE OF COMPOSITE modification technology, adds reagent few, and environment-protecting asepsis; Production technique simplifies, it is mainly manifested in: use the cross-linking modified NEW TYPE OF COMPOSITE modification technology combined with cross-linking radiation first, the PBS particle of selected specific fusing point, only with the addition of innocuous agents---after dibenzoyl peroxide (BPO), carry out physics radiation and be cross-linked, radiation dose is 0.5-50kGy, modified melt strength improves, solve PBS melt strength low, cannot the problem of blowfilm shaping, fill up the blank that PBS film and goods thereof carry out suitability for industrialized production.
2, the present invention adopts the method for reason radiation crosslinking, the method and chain extension method compare, save chain extending reaction step, simplify production technique, chain extending reaction still and chain extension flow process is no longer needed in production line, decrease material loss and equipment investment in production process, reduce material produce cost, there is the effect of energy-saving and emission-reduction.
3, the full-biodegradable film tensile strength >=30MPa adopting preparation method of the present invention to obtain, thickness is even, transmittance >=90%, tear resistance is 130cN, and its raw material PBS is not blended with other degradation material such as starch, poly(lactic acid), just improve the melt strength of material when not adding any softening agent, make product can be had good mechanical property by blowfilm shaping.
4, the PBS film obtained by the present invention is after discarded; under specific condition; degradation rate is 100%; can degradablely be carbonic acid gas and water; achieve degradable; fill up the blank of domestic PBS blowfilm shaping; fundamentally solve the environmental protection problem that " white pollution " causes; simultaneously in preparation process; do not add isocyanic ester chainextender, also not containing other toxic reagents, heavy metal content; the sanitation performance indexs such as solvent residual amount potassium permanganate consumption are all better than polyethylene (PE) preservative film that supermarket is sold, be improved significantly.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment 1
A preparation method for environment-friendly type plastic film PP Pipe Compound, the steps include:
(1) by 100KgPBS pellet, (PBS pellet purity is fusing point is 108 DEG C, and density is 1.26g/cm
3) mix with 1Kg benzoyl peroxide;
(2), by the PBS pellet of mixing and benzoyl peroxide melt blending in dual-screw-stem machine forcing machine, granulation, drying, carry out chemical modification by benzoyl peroxide to PBS pellet, and each working zone temperature is all set as 150 DEG C, and rotating speed is 50r/min;
(3) the PBS after chemical modification is put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(4) the PBS after the chemical modification sealed is carried out radiation crosslinking under Co60 source, dosage range 50kGy, at normal temperatures, under PBS pellet tiling in PE bag is placed on Co60 equipment, object is uniform irradiation, the gamma-rays of the high-energy utilizing Co60 to produce, strong penetrance directly carries out irradiation to PBS pellet, obtains PBS film PP Pipe Compound;
Blown film is carried out to PBS, the method is: add in inflation film manufacturing machine by the PBS after radiation crosslinking, the processing parameter of adjustment inflation film manufacturing machine, temperature 140 ~ 160 DEG C, rotating speed 30r/min, blow-up ratio 1.5, proceed as follows successively: hopper material loading, material plasticizing are extruded, inflation draws, vane cools, the traction of herringbone clamping plate, take off roll, corona treatment, film take-up, obtain PBS film, the PBS stretched plastic film intensity >=30MPa of this environment-friendly type degradable after testing, thickness is even, and transmittance >=90%, tear resistance is 130cN.
Embodiment 2
A preparation method for environment-friendly type plastic film PP Pipe Compound, the steps include:
(1) by 100KgPBS pellet, (PBS pellet purity is fusing point is 108 DEG C, and density is 1.26g/cm
3) mix with 0.5Kg benzoyl peroxide;
(2), by the PBS pellet of mixing and benzoyl peroxide melt blending in dual-screw-stem machine forcing machine, granulation, drying, carry out chemical modification by benzoyl peroxide to PBS pellet, and each working zone temperature is all set as 150 DEG C, and rotating speed is 50r/min;
(3) the PBS after chemical modification is put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(4) the PBS after the chemical modification sealed is carried out radiation crosslinking under Co60 source, dosage range 10kGy, at normal temperatures, under PBS pellet tiling in PE bag is placed on Co60 equipment, object is uniform irradiation, the gamma-rays of the high-energy utilizing Co60 to produce, strong penetrance directly carries out irradiation to PBS pellet, obtains PBS film PP Pipe Compound;
Blown film is carried out to PBS, the method is: add in inflation film manufacturing machine by the PBS after radiation crosslinking, the processing parameter of adjustment inflation film manufacturing machine, temperature 140 ~ 160 DEG C, rotating speed 30r/min, blow-up ratio 1.5, proceed as follows successively: hopper material loading, material plasticizing are extruded, inflation draws, vane cools, the traction of herringbone clamping plate, take off roll, corona treatment, film take-up, obtain PBS film, the PBS stretched plastic film intensity >=30MPa of this environment-friendly type degradable after testing, thickness is even, and transmittance >=90%, tear resistance is 130cN.
Embodiment 3
A preparation method for environment-friendly type plastic film PP Pipe Compound, the steps include:
(1) by 100KgPBS pellet, (PBS pellet purity is fusing point is 108 DEG C, and density is 1.26g/cm
3) put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(2) the PBS sealed is carried out radiation crosslinking under Co60 source, dosage range 20kGy, at normal temperatures, under PBS pellet tiling in PE bag is placed on Co60 equipment, object is uniform irradiation, the gamma-rays of the high-energy utilizing Co60 to produce, strong penetrance directly carries out irradiation to PBS pellet, obtains PBS film PP Pipe Compound;
Blown film is carried out to PBS, the method is: add in inflation film manufacturing machine by the PBS after radiation crosslinking, the processing parameter of adjustment inflation film manufacturing machine, temperature 140 ~ 160 DEG C, rotating speed 30r/min, blow-up ratio 1.5, proceed as follows successively: hopper material loading, material plasticizing are extruded, inflation draws, vane cools, the traction of herringbone clamping plate, take off roll, corona treatment, film take-up, obtain PBS film, the PBS stretched plastic film intensity >=30MPa of this environment-friendly type degradable after testing, thickness is even, and transmittance >=90%, tear resistance is 130cN.
Embodiment 4
A preparation method for environment-friendly type plastic film PP Pipe Compound, the steps include:
(1) by 100KgPBS pellet, (PBS pellet purity is fusing point is 108 DEG C, and density is 1.26g/cm
3) mix with 0.01Kg benzoyl peroxide;
(2), by the PBS pellet of mixing and benzoyl peroxide melt blending in dual-screw-stem machine forcing machine, granulation, drying, carry out chemical modification by benzoyl peroxide to PBS pellet, and each working zone temperature is all set as 150 DEG C, and rotating speed is 50r/min;
(3) the PBS after chemical modification is put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(4) the PBS after the chemical modification sealed is carried out radiation crosslinking under Co60 source, dosage range 10kGy, at normal temperatures, under PBS pellet tiling in PE bag is placed on Co60 equipment, object is uniform irradiation, the gamma-rays of the high-energy utilizing Co60 to produce, strong penetrance directly carries out irradiation to PBS pellet, obtains PBS film PP Pipe Compound;
Blown film is carried out to PBS, the method is: add in inflation film manufacturing machine by the PBS after radiation crosslinking, the processing parameter of adjustment inflation film manufacturing machine, temperature 140 ~ 160 DEG C, rotating speed 30r/min, blow-up ratio 1.5, proceed as follows successively: hopper material loading, material plasticizing are extruded, inflation draws, vane cools, the traction of herringbone clamping plate, take off roll, corona treatment, film take-up, obtain PBS film, the PBS stretched plastic film intensity >=30MPa of this environment-friendly type degradable after testing, thickness is even, and transmittance >=90%, tear resistance is 130cN.
Environment-friendly type plastic PBS film PP Pipe Compound prepared by embodiment 4 and PE preservative film are carried out comparison and detection, and this detection is made by national wrapped product Quality Supervision and Inspection Center (Tianjin).
Wrapped product Quality Supervision and Inspection Center of country (Tianjin)
Survey report
Contrast conclusion, the PBS plastics film indices of this environment-friendly type degradable all meets national standard, and simultaneously compared with PE preservative film, it has obvious superiority in transmittance and tear resistance, after evaporation, residue and potassium permanganate consumption are starkly lower than PE preservative film, environmental protection.
Claims (2)
1. a preparation method for environment-friendly type plastic film PP Pipe Compound, is characterized in that: the steps include:
(1) PBS pellet is put into PE bag, after being filled with nitrogen protection, seal with sealing machine;
(2) the PBS pellet sealed is carried out cross-linking radiation, obtain environment-friendly type plastic film PP Pipe Compound, after the PBS pellet that step is (1) described is mixed with benzoyl peroxide, put into dual-screw-stem machine forcing machine melt blending again, extrude, granulation, dry, by benzoyl peroxide, chemical modification is carried out to PBS pellet, described PBS pellet and benzoyl peroxide weight ratio are 100:0 ~ 1, described cross-linking radiation method is: at normal temperatures, under PBS pellet tiling in PE bag is placed on cobalt source device, produce gamma-rays by cobalt source and directly irradiation is carried out to PBS pellet, after the radiation crosslinking that step is (2) described, blown film is carried out to PBS pellet, the method is: add in inflation film manufacturing machine by PBS pellet good for radiation crosslinking, inflation film manufacturing machine temperature is set as 140 ~ 160 DEG C, speed setting is 30r/min, blow-up ratio 1.5, proceed as follows successively: hopper material loading, material plasticizing is extruded, inflation draws, vane cools, herringbone clamping plate, take off roll draw, corona treatment, film take-up, obtain PBS plastics film,
(1) described PBS pellet purity is fusing point to step is 108 DEG C, and density is 1.26g/cm
3,
Step is described twin screw extruder (1), and each working zone temperature is all set as 150 DEG C, and rotating speed is 50r/min,
Described cobalt source is Co60.
2. the preparation method of environment-friendly type plastic film PP Pipe Compound according to claim 1, is characterized in that: described Co60 dosage range 0.5 ~ 50kGy.
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| CN201310423322.2A CN103497348B (en) | 2013-09-17 | 2013-09-17 | A kind of preparation method of environment-friendly type plastic film PP Pipe Compound |
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| CN201310423322.2A CN103497348B (en) | 2013-09-17 | 2013-09-17 | A kind of preparation method of environment-friendly type plastic film PP Pipe Compound |
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| CN103497348B true CN103497348B (en) | 2016-01-13 |
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Non-Patent Citations (2)
| Title |
|---|
| 聚丁二酸丁二醇酯(PBS)交联改性研究;揣成智等;《天津科技大学学报》;20120825;第27卷(第4期);第40-43页 * |
| 聚琥珀酸丁二酯的辐射交联及其生物降解性;宋春雷等;《功能高分子学报》;20020630;第15卷(第2期);第152-156页 * |
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