CN103709687B - Composition and method of making the same containing PBAT and PBAT whole life cycle design - Google Patents
Composition and method of making the same containing PBAT and PBAT whole life cycle design Download PDFInfo
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Abstract
The invention discloses a kind of composition and method of making the same and the PBAT whole life cycle design that contain PBAT, composition contains PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersion agent; With the gross weight of composition for benchmark, the content of PBAT is 55-90 % by weight, the content of modified talc powder is 5-40 % by weight, the content of oxidation inhibitor is 0.1-1 % by weight, the content of uv-absorbing agent is 0.1-1 % by weight, the content of photostabilizer is 0.05-1 % by weight, and the content of caking inhibiter is 0.1-1 % by weight, and the content of lubricant is the content of 0.1-1 % by weight and dispersion agent is 0.05-1 % by weight.By adding modification height in PBAT, talcum powder and the SR100 adding silicon-dioxide and/or vapour Bagong department improve the Kekelé structure count of the PBAT mulch film obtained by PBAT composition thoroughly in the present invention.
Description
Technical field
The present invention relates to polymeric material field, particularly, relate to a kind of composition and method of making the same and the PBAT whole life cycle design that contain PBAT.
Background technology
Environmental protection has become the focus noun that the universe pays close attention to, current every country is all in the environmentfriendly products of active development Sustainable development, in film industry, full-biodegradable film as far back as eighties of last century just pay attention to by western developed country, and be expected to solve current white pollution problems.
China is large agricultural country, and the annual mulch film amount used is more than 1,000,000 tons, and membrane covering area is more than 200,000,000 mu.Traditional ground membrane material is the petroleum base films such as PE, PVC, this mulch film reclaims difficulty after using, discard and more than a century be all difficult to decompose in soil, cause crop production reduction, the series of problems such as cannot to be cultivated in soil, have a strong impact on the Sustainable development of China's agricultural, and the water circulation system in region may have been changed, affect the ecosystem in whole region.
PBAT is the multipolymer of tetramethylene adipate and mutual-phenenyl two acid bromide two alcohol ester, has excellent biological degradability, and has the characteristic of PBA and PBT concurrently, and existing good ductility and elongation at break, also have good thermotolerance and impact property.But the melting index of pure PBAT is low, processing characteristics is not high, and during blown film, Kekelé structure count is poor, and price is higher, is unfavorable for promoting the use of on a large scale.The price how reducing PBAT mulch film and the Kekelé structure count improving PBAT film have become the key problem in technology of degradable PBAT mulch film.
Summary of the invention
The object of the invention is the defect that Kekelé structure count in order to overcome the mulch film obtained containing the composition production of PBAT provided by prior art is low, a kind of composition and method of making the same containing PBAT and the high PBAT whole life cycle design of Kekelé structure count are provided.
The Kekelé structure count of mulch film refers to the smooth performance of mulch film, the present inventor is found by research, under the condition of tensile strength ensureing PBAT mulch film, the Kekelé structure count of PBAT mulch film depends on dynamic friction factor and the static friction factor of PBAT mulch film, therefore the present invention is by changing the formula of the composition containing PBAT, under improving the prerequisite of the tensile property of the composition containing PBAT, reduce the frictional coefficient of PBAT mulch film thus the Kekelé structure count of raising PBAT mulch film.
To achieve these goals, the invention provides a kind of composition containing PBAT, wherein, described composition contains PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersion agent; With the gross weight of described composition for benchmark, the content of described PBAT is 55-90 % by weight, the content of described modified talc powder is 5-40 % by weight, the content of described oxidation inhibitor is 0.1-1 % by weight, the content of described uv-absorbing agent is 0.1-1 % by weight, the content of described photostabilizer is 0.05-1 % by weight, and the content of described caking inhibiter is 0.1-1 % by weight, and the content of described lubricant is the content of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight.
Present invention also offers a kind of preparation method of the composition containing PBAT, wherein, the method comprises PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersant, then by mixture extruding pelletization; With the gross weight of described composition for benchmark, the consumption of described PBAT is 55-90 % by weight, the consumption of described modified talc powder is 5-40 % by weight, the consumption of described oxidation inhibitor is 0.1-1 % by weight, the consumption of described uv-absorbing agent is 0.1-1 % by weight, the consumption of described photostabilizer is 0.05-1 % by weight, and the consumption of described caking inhibiter is 0.1-1 % by weight, and the consumption of described lubricant is the consumption of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight.
Present invention also offers a kind of PBAT whole life cycle design, wherein, described mulch film contains the above-mentioned composition containing PBAT or the composition containing PBAT prepared by aforesaid method.
Compared with prior art PBAT composition, the present invention improves the tensile strength of PBAT composition by adding modified talc powder in PBAT, and the original elongation at break of PBAT can be kept, add caking inhibiter simultaneously, significantly can reduce the static and dynamic friction coefficient of PBAT film, improve the Kekelé structure count of the PBAT mulch film obtained by the composition containing PBAT.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of composition containing PBAT, wherein, described composition can contain PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersion agent; With the gross weight of described composition for benchmark, the content of described PBAT is 55-90 % by weight, the content of described modified talc powder is 5-40 % by weight, the content of described oxidation inhibitor is 0.1-1 % by weight, the content of described uv-absorbing agent is 0.1-1 % by weight, the content of described photostabilizer is 0.05-1 % by weight, and the content of described caking inhibiter is 0.1-1 % by weight, and the content of described lubricant is the content of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight.
Preferably, the trade mark that described caking inhibiter can be silicon-dioxide and/or vapour Bagong department is the caking inhibiter of SR100, and described silicon-dioxide is preferably the micron silica that particle diameter is 1-5um; Described lubricant can be Zinic stearas and/or calcium stearate; The density of described PBAT is 1.24-1.27g/cm
3, at 190 DEG C, melting index is 2-4g/10min, and fusing point is not less than 115 DEG C, and weight-average molecular weight is 50,000-8 ten thousand.
According to the present invention, the high talcum powder thoroughly of the modification in the described composition containing PBAT for improving the tensile strength of PBAT composition, and can keep the original elongation at break of PBAT.Add caking inhibiter, significantly can reduce the static and dynamic friction coefficient of PBAT film, particularly the trade mark of silicon-dioxide and/or vapour Bagong department is that SR100 significantly can reduce the static and dynamic friction coefficient of PBAT film as caking inhibiter, further increases the Kekelé structure count of the PBAT mulch film obtained by the composition containing PBAT.
According to the present invention, described oxidation inhibitor, ultraviolet-resistant absorbent, photostabilizer and lubricant are all originally receive known reagent, for improving the compatibility between the stability of PBAT composition under light, heat condition, mobility and each component of composition, preferably, described dispersion agent is polyethylene wax and/or ethylene bis stearamide, described oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three [2,4-di-tert-butyl-phenyl] phosphorous acid ester; Described uv-absorbing agent is Octabenzone; Described photostabilizer is the polymkeric substance of succinic acid and 4-hydroxyl-2,2,6,6-tetramethyl--1-piperidine alcohols.
According to the present invention, described modified talc powder is by under agitation, and mixed by talcum powder obtained with properties-correcting agent, the temperature of described mixing is preferably 15-35 DEG C.Therefore, preferably, described modified talc powder contains talcum powder and properties-correcting agent, preferably, described talcous particle diameter is 2000-3000 order, one or more preferably in stearic acid, sodium stearate and Zinic stearas of described properties-correcting agent, more preferably, with the talcum powder of 100 weight parts for benchmark, the content of described properties-correcting agent is 0.1-1 weight part.
Present invention also offers a kind of preparation method of the composition containing PBAT, wherein, the method comprises PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersant, then by mixture extruding pelletization; The consumption of each component makes the gross weight of the composition obtained for benchmark, the content of described PBAT is 55-90 % by weight, the content of described modified talc powder is 5-40 % by weight, the content of described oxidation inhibitor is 0.1-1 % by weight, the content of described uv-absorbing agent is 0.1-1 % by weight, the content of described photostabilizer is 0.05-1 % by weight, and the content of described caking inhibiter is 0.1-1 % by weight, and the content of described lubricant is the content of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight.
Preferably, above-mentioned modified talc powder obtains by talcum powder and properties-correcting agent being carried out mixing, described talcous particle diameter is 2000-3000 order, preferably, the diameter of described talcous particle is 2500 orders, preferably, described properties-correcting agent be selected from stearic acid, sodium stearate and Zinic stearas one or more, with the talcum powder of 100 weight parts for benchmark, the consumption of described properties-correcting agent is 0.1-1 weight part.
Preferably, the density of described PBAT is 1.24-1.27g/cm
3, at 190 DEG C, melting index is 2-4g/10min, and fusing point is not less than 115 DEG C, and weight-average molecular weight is 50,000-8 ten thousand.
Described oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three [2,4-di-tert-butyl-phenyl] phosphorous acid esters; Described uv-absorbing agent is Octabenzone; Described photostabilizer is the polymkeric substance of succinic acid and 4-hydroxyl-2,2,6,6-tetramethyl--1-piperidine alcohols, and preferably, described photostabilizer is the photostabilizer 622 of Nanjing Hua Liming Chemical Co., Ltd.; Described caking inhibiter is the trade mark of silicon-dioxide and/or vapour Bagong department is the caking inhibiter of SR100; Described lubricant is Zinic stearas and/or calcium stearate; Described dispersion agent is polyethylene wax and/or ethylene bis stearamide, and the trade mark of described polyethylene wax is CH2A, and polyethylene wax, ethylene bis stearamide can adopt the product of Shanghai Hua Yi auxiliary chemicals company limited.
In aforesaid method, the order by merging of material both can be mixed together, can mix step by step again, preferably, first by PBAT and the mixing of described modified talc powder, mixed with described oxidation inhibitor, described uv-absorbing agent, described photostabilizer, described caking inhibiter, described lubricant and described dispersion agent by the mixture obtained, more random hybrid mode, this hybrid mode finally obtained various physicals of PBAT composition is more superior again.
Extruding pelletization in aforesaid method can adopt the extruding pelletization mode of this area routine, preferably, described extruding pelletization carries out in twin-screw extrusion forming machine, the length-to-diameter ratio of described twin screw extruder is 40:1-50:1, the condition optimization of extruding pelletization comprises: extrusion temperature is 125-135 DEG C, screw speed is 100-300r/min, preferably, the resin particle produced also is cooled, not only can be water-cooled but also can be air-cooled, further preferably, describedly be cooled to water-cooled, water-cooled is more conducive to the formation of crystal, in Cooling Process, water temperature is 10-30 DEG C, PBAT composition grain character obtained under above-mentioned preferred extruding pelletization condition is more stable.
According to the present invention, before described method also can be included in and to be mixed by each material, PBAT and modified talc powder are carried out drying treatment, preferably, by talcum powder dry 1-2h and by PBAT dry 1-2h at 50-80 DEG C at 80-120 DEG C, this prevents from moisture from granulation process, producing bubble to composition to cause degradation.
Present invention also offers the composition containing PBAT that above-mentioned composition containing PBAT and aforesaid method prepare and prepare PBAT whole life cycle design for blowing.Describedly the method for well known to a person skilled in the art can be adopted to carry out the method that the composition containing PBAT of the present invention carries out Blown Film.Preferably, the condition of described Blown Film comprises: blow temperatures is 120-140 DEG C, and preferably, described Blown Film uses single screw extrusion machine to coordinate corresponding blowing head to carry out Blown Film, and the length-to-diameter ratio of single screw extrusion machine is 20:1-30:1.
Below by way of specific embodiment, the present invention will be further described:
The PBAT(tetramethylene adipate used in following examples and the multipolymer of mutual-phenenyl two acid bromide two alcohol ester) weight-average molecular weight 50,000-8 ten thousand (product of Zhejiang Xin Fu pharmaceutcal corporation, Ltd); The trade mark of the polyethylene of dispersing agent wax used is CH2A, and polyethylene of dispersing agent wax, ethylene bis stearamide are all the products of Shanghai Hua Yi auxiliary chemicals company limited; Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (product of Ke Bangte Chemical Co., Ltd.) and/or three [2,4-di-tert-butyl-phenyl] phosphorous acid ester (product of Zibo Qi Xiang petrochemical complex Group Co., Ltd); Uv-absorbing agent is Octabenzone (product of the purple chemical reagent work in Shanghai); Photostabilizer is the photostabilizer 622 of Nanjing Hua Liming Chemical Co., Ltd.; Caking inhibiter is the trade mark of silicon-dioxide and/or vapour Bagong department is the caking inhibiter of SR100; Lubricant is Zinic stearas and/or calcium stearate; Modified talc powder at 20 DEG C, stirs 10min by 2500 object talcum powder of 100 weight parts and the stearic acid of 0.1 weight part to obtain; The tailor-made product of the sub-complete equipment of chemical Equipment Limited of the twin screw extruder Nanjing section used, length-to-diameter ratio is 40:1, and extrusion temperature is 125-135 DEG C, and screw speed is 300r/min; The single screw extrusion machine model used is Ke Zhida Machinery Co., Ltd. of Zhongshan city tailor-made product, and length-to-diameter ratio is 30:1, and extrusion temperature is 120-140 DEG C; Stretching experiment (tensile strength, elongation at break) adopts state's label to be the test method of GB13022-91, and frictional experiment adopts state's label to be the test method of GB10006-1988; High-speed mixer is the product of Xin Da plastics machinery Manufacturing Co., Ltd of Zhangjagang City, and model is SHR-10A.
Embodiment 1
The concrete operating process of the present embodiment is as follows:
The PBAT of 57 weight parts, modified talc powder dry 2h at 100 DEG C of 40 weight parts;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.4 weight part, Octabenzone 0.2 weight part, photostabilizer 0.4 weight part, silicon-dioxide 0.6 weight part, Zinic stearas 0.9 weight part, polyethylene wax 0.5 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and the PBAT Biodegradable mulch A1 that thickness is 0.01mm is produced in blowing, then A1 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 2
The concrete operating process of the present embodiment is as follows:
By PBAT62 weight part, modified talc powder 35 weight part dry 2h at 100 DEG C;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.1 weight part, Octabenzone 0.5 weight part, photostabilizer 0.8 weight part, the SR1000.1 weight part of vapour Bagong department, Zinic stearas 0.9 weight part, polyethylene wax 0.6 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and PBAT Biodegradable mulch A2 is produced in blowing, then A2 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 3
The concrete operating process of the present embodiment is as follows:
By PBAT68 weight part, modified talc powder 29 weight part dry 2h at 100 DEG C;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.9 weight part, Octabenzone 0.2 weight part, photostabilizer 0.1 weight part, the SR1000.8 weight part of vapour Bagong department, Zinic stearas 0.9 weight part, dispersion agent 0.1 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and the PBAT Biodegradable mulch A3 that thickness is 0.01mm is produced in blowing, then A3 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 4
The concrete operating process of the present embodiment is as follows:
By PBAT72 weight part, modified talc powder 25 weight part, dry 2h at 100 DEG C;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.4 weight part, Octabenzone 0.9 weight part, photostabilizer 0.4 weight part, the SR1000.2 weight part of vapour Bagong department, Zinic stearas 0.2 weight part, polyethylene wax 0.9 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and the PBAT Biodegradable mulch A4 that thickness is 0.01mm is produced in blowing, then A4 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 5
The concrete operating process of the present embodiment is as follows:
Take PBAT78 weight part, modified talc powder 19 weight part, and by PBAT and modified talc powder dry 2h at 100 DEG C;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.4 weight part, Octabenzone 0.4 weight part, photostabilizer 0.6 weight part, the SR1000.6 weight part of vapour Bagong department, calcium stearate 0.5 weight part, polyethylene wax 0.5 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and the PBAT Biodegradable mulch A5 that thickness is 0.01mm is produced in blowing, then A5 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 6
The concrete operating process of the present embodiment is as follows:
Take PBAT88 weight part, modified talc powder 9 weight part, and by PBAT and modified talc powder dry 2h at 100 DEG C;
Dried PBAT and modified talc powder are mixed in high-speed mixer and mix 10min, then add three [2,4-di-tert-butyl-phenyl] phosphorous acid ester 0.4 weight part, Octabenzone 0.2 weight part, photostabilizer 0.4 part, the SR1000.6 weight part of vapour Bagong department, calcium stearate 0.9 weight part, ethylene bis stearamide 0.5 weight part, fully mix;
By be mixed even after material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain granular hybrid resin;
To by the hybrid particle resin of granulation gained in previous step dry 4h at 60 DEG C;
Hybrid resin after drying treatment is put into single screw extrusion machine, and the PBAT Biodegradable mulch A6 that thickness is 0.01mm is produced in blowing, then A6 is carried out tensile property and frictional behaviour detection, detects data and see the following form 1.
Embodiment 7
The present embodiment and embodiment 6 difference are that in this enforcement, each material joins in high mixer together, and it is A7 that the present embodiment obtains product, and physical function parameter is in table 1.
Comparative example 1
This comparative example and embodiment 6 difference are, caking inhibiter is not used in the present embodiment, the mass ratio of unclassified stores is constant, PBAT88 weight part, modified talc powder 9.2 weight part, three [2,4-di-tert-butyl-phenyl] phosphorous acid ester 0.5 weight part, Octabenzone 0.3 weight part, photostabilizer 0.5 weight part, calcium stearate 1 weight part, ethylene bis stearamide 0.5 weight part, this comparative example obtains the performance perameter of product D1 in table 1.
Comparative example 2
This comparative example and embodiment 6 difference are, modified talc powder is not used in the present embodiment, the mass ratio of unclassified stores is constant, PBAT97 weight part, three [2,4-di-tert-butyl-phenyl] phosphorous acid ester 0.4 weight part, Octabenzone 0.2 weight part, photostabilizer 0.4 weight part, the SR1000.6 weight part of vapour Bagong department, calcium stearate 0.9 weight part, ethylene bis stearamide 0.5 weight part, this comparative example obtains the performance perameter of product D2 in table 1.
Comparative example 3
This comparative example and embodiment 6 difference are, modified talc powder in the present embodiment and PBAT content done change, the weight ratio of PBAT and other components remains unchanged substantially, PBAT94 weight part, modified talc powder 3 weight part, this comparative example obtains the performance perameter of product D3 in table 1.
Comparative example 4
This comparative example and embodiment 1 difference be modified talc powder in the present embodiment and PBAT content done change, the weight ratio of PBAT and other components remains unchanged substantially, PBAT38 weight part, modified talc powder 60 weight part, this comparative example obtains the performance perameter of product D3 in table 1.
Table 1
| Composition (parts by weight) | A1 | A2 | A3 | A4 | A5 | A6 | A7 | D1 | D2 | D3 | D4 |
| PBAT | 57 | 62 | 68 | 72 | 78 | 88 | 88 | 88 | 97 | 94 | 38 |
| Modified talc powder | 40 | 35 | 29 | 25 | 19 | 9 | 9 | 9.2 | 0 | 3 | 60 |
| Oxidation inhibitor | 0.4 | 0.1 | 0.9 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.4 | 0.4 | 0.3 |
| Uv-absorbing agent | 0.2 | 0.5 | 0.2 | 0.9 | 0.4 | 0.2 | 0.2 | 0.3 | 0.2 | 0.2 | 0.15 |
| Photostabilizer | 0.4 | 0.8 | 0.1 | 0.4 | 0.6 | 0.4 | 0.4 | 0.5 | 0.4 | 0.4 | 0.3 |
| Caking inhibiter | 0.6 | 0.1 | 0.8 | 0.2 | 0.6 | 0.6 | 0.6 | 0 | 0.6 | 0.6 | 0.45 |
| Lubricant | 0.9 | 0.9 | 0.9 | 0.2 | 0.5 | 0.9 | 0.9 | 1 | 0.9 | 0.9 | 0.5 |
| Dispersion agent | 0.5 | 0.6 | 0.1 | 0.9 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.3 |
| Tensile strength (Mpa) | 19 | 20.5 | 23 | 24.7 | 25.9 | 21 | 18 | 21.3 | 14 | 15 | 10 |
| Elongation at break (%) | 420 | 490 | 520 | 560 | 640 | 600 | 589 | 598 | 570 | 580 | 300 |
| Dynamic friction factor | 0.15 | 0.30 | 0.13 | 0.26 | 0.20 | 0.21 | 0.19 | 0.8 | 0.23 | 0.25 | 0.19 |
| Static friction factor | 0.22 | 0.39 | 0.20 | 0.37 | 0.25 | 0.27 | 0.25 | 0.85 | 0.28 | 0.30 | 0.27 |
From embodiment 7 and embodiment 6, ideal mixing method first mixes PBAT and modified talc powder, after add unclassified stores; From comparative example 2 and embodiment 6, on the basis of elongation at break ensureing mulch film, modified talc powder can improve the tensile strength of mulch film; Significantly frictional coefficient can be reduced by comparative example 1 and the known caking inhibiter of embodiment 6; From comparative example 3 and embodiment 6 and comparative example 4 and embodiment 1, the quality proportioning of each material provided by the invention is optimum ratio, when in the scope that the content of modified talc powder does not specify in the claims in the present invention, obtained mulching film stretching intensity is undesirable, this is because within the specific limits, modified talc powder can improve the mechanical strength of PBAT, but content is too much, modified talc powder is dispersed poor in matrix resin, easily produces agglomeration, causes mechanical property significantly to reduce; From embodiment 1-7 and comparative example 3-4, within the specific limits, the tensile strength of mulch film presents the trend first increasing and reduce afterwards with talcum powder content, maximum value is reached when talcum powder content reaches 20 weight part, the content of the caking inhibiter added is more, the frictional coefficient of mulch film is less, and beyond the scope that the claims in the present invention specify, obtained mulch film can not meet simultaneously has good tensile property and frictional behaviour.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. the composition containing PBAT, it is characterized in that, described composition contains PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersion agent; With the gross weight of described composition for benchmark, the content of described PBAT is 55-90 % by weight, the content of described modified talc powder is 5-40 % by weight, the content of described oxidation inhibitor is 0.1-1 % by weight, the content of described uv-absorbing agent is 0.1-1 % by weight, the content of described photostabilizer is 0.05-1 % by weight, and the content of described caking inhibiter is 0.1-1 % by weight, and the content of described lubricant is the content of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight;
Wherein, described modified talc powder contains talcum powder and properties-correcting agent, described properties-correcting agent be selected from stearic acid, sodium stearate and Zinic stearas one or more, with the talcum powder of 100 weight parts for benchmark, the content of described properties-correcting agent is 0.1-1 weight part; Described uv-absorbing agent is Octabenzone; Described photostabilizer is the polymkeric substance of succinic acid and 4-hydroxyl-2,2,6,6-tetramethyl--1-piperidine alcohols; Described caking inhibiter is the trade mark of silicon-dioxide and/or vapour Bagong department is the caking inhibiter of SR100.
2. composition according to claim 1, wherein, the density of described PBAT is 1.24-1.27g/cm
3, at 190 DEG C, melting index is 2-4g/10min, and fusing point is not less than 115 DEG C, and weight-average molecular weight is 50,000-8 ten thousand;
Described oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three [2,4-di-tert-butyl-phenyl] phosphorous acid esters;
Described lubricant is Zinic stearas and/or calcium stearate;
Described dispersion agent is polyethylene wax and/or ethylene bis stearamide.
3. a preparation method for the composition containing PBAT, it is characterized in that, the method comprises PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersant, then by mixture extruding pelletization; The consumption of each component with the gross weight of described composition for benchmark, the content of described PBAT is 55-90 % by weight, the content of described modified talc powder is 5-40 % by weight, the content of described oxidation inhibitor is 0.1-1 % by weight, the content of described uv-absorbing agent is 0.1-1 % by weight, the content of described photostabilizer is 0.05-1 % by weight, and the content of described caking inhibiter is 0.1-1 % by weight, and the content of described lubricant is the content of 0.1-1 % by weight and described dispersion agent is 0.05-1 % by weight;
Wherein, described modified talc powder contains talcum powder and properties-correcting agent, described properties-correcting agent be selected from stearic acid, sodium stearate and Zinic stearas one or more, with the talcum powder of 100 weight parts for benchmark, the consumption of described properties-correcting agent is 0.1-1 weight part; Described uv-absorbing agent is Octabenzone; Described photostabilizer is the polymkeric substance of succinic acid and 4-hydroxyl-2,2,6,6-tetramethyl--1-piperidine alcohols; Described caking inhibiter is the trade mark of silicon-dioxide and/or vapour Bagong department is the caking inhibiter of SR100.
4. method according to claim 3, wherein, the density of described PBAT is 1.24-1.27g/cm
3, at 190 DEG C, melting index is 2-4g/10min, and fusing point is not less than 115 DEG C, and weight-average molecular weight is 50,000-8 ten thousand;
Described oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three [2,4-di-tert-butyl-phenyl] phosphorous acid esters;
Described lubricant is Zinic stearas and/or calcium stearate;
Described dispersion agent is polyethylene wax and/or ethylene bis stearamide.
5. the method according to claim 3 or 4, wherein, the method of PBAT, modified talc powder, oxidation inhibitor, uv-absorbing agent, photostabilizer, caking inhibiter, lubricant and dispersant is comprised: first by PBAT and the mixing of described modified talc powder, then the mixture obtained is mixed with described oxidation inhibitor, described uv-absorbing agent, described photostabilizer, described caking inhibiter, described lubricant and described dispersion agent.
6. method according to claim 5, wherein, described extruding pelletization carries out in twin-screw extrusion forming machine, and the length-to-diameter ratio of described twin-screw extrusion forming machine is 40:1-50:1, and extrusion temperature is 125-135 DEG C, and screw speed is 100-300r/min.
7. method according to claim 5, wherein, described method also comprises before mixing, by talcum powder dry 1-2h and by PBAT dry 1-2h at 50-80 DEG C at 80-120 DEG C.
8. a PBAT whole life cycle design, it is characterized in that, the composition containing PBAT that described PBAT whole life cycle design contains the composition containing PBAT in claim 1-2 described in any one or prepared by method described in any one in claim 3-7.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680485A (en) * | 2001-03-30 | 2005-10-12 | 伊斯曼化学公司 | Polyesters and polyester containers having a reduced coefficient of friction and improved clarity |
| CN102675841A (en) * | 2012-02-22 | 2012-09-19 | 天津国韵生物材料有限公司 | Polylactic acid and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano modified composite |
| CN102695748A (en) * | 2009-12-22 | 2012-09-26 | 金伯利-克拉克环球有限公司 | Biodegradable and breathable film |
| CN102702694A (en) * | 2012-06-14 | 2012-10-03 | 新疆康润洁环保科技有限公司 | Polyester biodegradation agricultural mulching film as well as preparation and application of polyester biodegradation agricultural mulching film |
-
2013
- 2013-12-26 CN CN201310736299.2A patent/CN103709687B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680485A (en) * | 2001-03-30 | 2005-10-12 | 伊斯曼化学公司 | Polyesters and polyester containers having a reduced coefficient of friction and improved clarity |
| CN102695748A (en) * | 2009-12-22 | 2012-09-26 | 金伯利-克拉克环球有限公司 | Biodegradable and breathable film |
| CN102675841A (en) * | 2012-02-22 | 2012-09-19 | 天津国韵生物材料有限公司 | Polylactic acid and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano modified composite |
| CN102702694A (en) * | 2012-06-14 | 2012-10-03 | 新疆康润洁环保科技有限公司 | Polyester biodegradation agricultural mulching film as well as preparation and application of polyester biodegradation agricultural mulching film |
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