CN104530667A - PLA toughening material, PLA toughening plastic-suction sheet and preparation methods of two - Google Patents
PLA toughening material, PLA toughening plastic-suction sheet and preparation methods of two Download PDFInfo
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Abstract
The invention discloses a PLA toughening material, a PLA toughening plastic-suction sheet and preparation methods of the above two materials. The toughening material comprises in percent by weight, based on the total weight of the toughening material, 78-96% of PLA, 3-15% of a flexibilizer, 0.3-1.5% of an anti-oxidant, 0.2-1% of a lubricant, and 0.5-5% of a plasticizer. The PLA toughening plastic-suction sheet possesses excellent toughness, damage resistance and elasticity.
Description
Technical field
The present invention relates to PLA material, particularly, relate to a kind of PLA toughening material, the toughness reinforcing plastic uptake sheet material of PLA and preparation method thereof.
Background technology
At present, white pollution has become global problem demanding prompt solution, how to reduce white pollution and has also become the serious challenge that various countries face, and therefore, how to reduce white pollution and has been subject to academia, industry member, the concern of national governments and attention.But plastics are as the requisite of modern industry and people's daily life, in society becomes to produce and people live, play very important role.Under this background, degradative plastics arises at the historic moment, and degradative plastics is different from conventional plastic, can be degraded into carbonic acid gas and water, can not form white pollution after discarded under composting conditions.
Poly(lactic acid) (PLA), as the Typical Representative of degradative plastics, by amylofermentation, dehydration, polymerization and obtaining, has following character: safe and harmless, can directly be absorbed by the body in human body, discarded after within 7 weeks, CO can be decomposed into completely under composting conditions
2and H
2o, therefore poly(lactic acid) is known as Green Polymer environment-friendly materials by international community.
Although PLA has the characteristic of high-modulus and the transparency, PLA is crisp and firmly limit the Application Areas of PLA.
Summary of the invention
The object of this invention is to provide a kind of PLA toughening material and preparation method thereof and by obtained toughness reinforcing plastic uptake sheet material of PLA of this PLA toughening material and preparation method thereof, the toughness reinforcing plastic uptake sheet material of this PLA has excellent toughness, collapse resistance power character and elasticity.
To achieve these goals, the invention provides a kind of PLA toughening material, described toughening material contains PLA, toughner, oxidation inhibitor, lubricant and softening agent; Wherein, with the gross weight of described toughening material for benchmark, the content of described PLA is 78-96 % by weight, the content of described toughner is 3-15 % by weight, the content of described oxidation inhibitor is 0.3-1.5 % by weight, the content of described lubricant is 0.2-1 % by weight, and the content of described softening agent is 0.5-5 % by weight.
Present invention provides a kind of preparation method of PLA toughening material, described method comprises PLA, toughner, oxidation inhibitor, lubricant and softening agent is mixed extruding pelletization in rear feeding forcing machine; Wherein, the consumption of each component makes the gross weight of the toughening material obtained for benchmark, with the gross weight of the material obtained for benchmark, the consumption of described PLA is 78-96 % by weight, the consumption of described toughner is 3-15 % by weight, the consumption of described oxidation inhibitor is 0.3-1.5 % by weight, and the consumption of described lubricant is 0.2-1 % by weight, and the consumption of described softening agent is 0.5-5 % by weight.
Present invention also offers the preparation method of the toughness reinforcing plastic uptake sheet material of a kind of PLA, above-mentioned PLA toughening material or the PLA toughening material obtained according to above-mentioned method are put on twin screw sheet extruder and carries out extruding compressing tablet with the toughness reinforcing plastic uptake sheet material of obtained PLA; Preferably, the screw slenderness ratio of described twin screw sheet extruder is 25:1-35:1, and extrusion temperature is 170-180 DEG C, and screw speed is 120-300r/min.
Invention further provides the toughness reinforcing plastic uptake sheet material of a kind of PLA, described PLA toughness reinforcing plastic uptake sheet material is prepared from by above-mentioned method.
Pass through technique scheme, the present invention by by PLA, toughner, oxidation inhibitor, lubricant and softening agent mix after then extruding pelletization make PLA toughening material, then PLA toughening material is extruded compressing tablet and make the toughness reinforcing plastic uptake sheet material of PLA, the toughness reinforcing plastic uptake sheet material of this PLA is under the synergy of PLA, toughner, oxidation inhibitor, lubricant and softening agent, make PLA toughness reinforcing plastic uptake sheet material not only have collapse resistance power character and the elasticity of the excellence that existing PLA sheet material has, also there is the toughness of the excellence not available for existing PLA sheet material.
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 PLA toughening material, described toughening material contains PLA, toughner, oxidation inhibitor, lubricant and softening agent; Wherein, with the gross weight of described toughening material for benchmark, the content of described PLA is 78-96 % by weight, the content of described toughner is 3-15 % by weight, the content of described oxidation inhibitor is 0.3-1.5 % by weight, the content of described lubricant is 0.2-1 % by weight, and the content of described softening agent is 0.5-5 % by weight.
On the basis of above-mentioned PLA toughening material, in order to improve collapse resistance power ability and the elasticity of this PLA toughening material, preferably, described toughening material also comprises mineral filler; Wherein, with the gross weight of described toughening material for benchmark, the content of described PLA is 65-96 % by weight, the content of described toughner is 3-15 % by weight, the content of described oxidation inhibitor is 0.3-1.5 % by weight, the content of described lubricant is 0.2-1 % by weight, and the content of described softening agent is 0.5-5 % by weight, and the content of described mineral filler is not more than 30 % by weight.
When PLA toughening material contains mineral filler, the kind of mineral filler can be selected in wide scope, it can be any one mineral filler in this area, as white cement, Feldspar Powder, talcum powder, titanium dioxide, calcium carbonate, silicon-dioxide, aluminium hydroxide and magnesium hydroxide, but in order to the collapse resistance power ability that improves PLA toughening material further and elasticity, preferably, one or more in talcum powder, calcium carbonate, barium sulfate and wollastonite.
When PLA toughening material contains mineral filler, the particle diameter of mineral filler can be selected in wide scope, but in order to the collapse resistance power ability that improves PLA toughening material further and elasticity, preferably, the order number of mineral filler is 1250-8000 order.
In the present invention, PLA can be any one PLA common in this area, but in order to make PLA toughening material, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, described PLA meets the following conditions: weight-average molecular weight is 200000-400000, molecular weight distribution is 1.15-2.0, and degree of crystallinity is 30-60%.Further preferably, described PLA is selected from one or more in Poly-L-lactide, poly-D-ALPHA-Hydroxypropionic acid and poly-DL-lactic acid.
In the present invention, the kind of other raw material of PLA toughening material also can be selected in wide scope, but in order to make PLA toughening material have more excellent collapse resistance power ability, elasticity and toughness, preferably, described toughner is ACR, EGMA, PBS and the trade mark is ROHM AND HAAS PARALOID
tMone or more in the toughner of BPM-500; 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 white oil and/or N, N'-ethylenebisstearamide; Described softening agent is Viscotrol C.
Present invention provides a kind of preparation method of PLA toughening material, described method comprises PLA, toughner, oxidation inhibitor, lubricant and softening agent is mixed extruding pelletization in rear feeding forcing machine; Wherein, the consumption of each component makes the gross weight of the toughening material obtained for benchmark, with the gross weight of the material obtained for benchmark, the consumption of described PLA is 78-96 % by weight, the consumption of described toughner is 3-15 % by weight, the consumption of described oxidation inhibitor is 0.3-1.5 % by weight, and the consumption of described lubricant is 0.2-1 % by weight, and the consumption of described softening agent is 0.5-5 % by weight.
On the basis of above-mentioned method, in order to improve collapse resistance power ability and the elasticity of obtained PLA toughening material, described method comprises PLA, toughner, oxidation inhibitor, lubricant, softening agent and mineral filler is mixed extruding pelletization in rear feeding forcing machine; Wherein, the consumption of each component makes the gross weight of the toughening material obtained for benchmark, with the gross weight of the material obtained for benchmark, the consumption of described PLA is 65-96 % by weight, the consumption of described toughner is 3-15 % by weight, and the consumption of described oxidation inhibitor is 0.3-1.5 % by weight, and the consumption of described lubricant is 0.2-1 % by weight, the consumption of described softening agent is 0.5-5 % by weight, and the consumption of described mineral filler is not more than 30 % by weight.
Contain in the method for mineral filler at above-mentioned PLA toughening material, the kind of mineral filler can be selected in wide scope, it can be any one mineral filler in this area, as white cement, Feldspar Powder, talcum powder, titanium dioxide, calcium carbonate, silicon-dioxide, aluminium hydroxide and magnesium hydroxide, but in order to the collapse resistance power ability that improves PLA toughening material further and elasticity, preferably, one or more in talcum powder, calcium carbonate, barium sulfate and wollastonite.
Contain in the method for mineral filler at above-mentioned PLA toughening material, the particle diameter of mineral filler can be selected in wide scope, but in order to the collapse resistance power ability that improves PLA toughening material further and elasticity, preferably, the order number of mineral filler is 1250-8000 order.
In the above-mentioned methods, PLA can be any one PLA common in this area, but in order to make PLA toughening material, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, described PLA meets the following conditions: weight-average molecular weight is 200000-400000, molecular weight distribution is 1.15-2.0, and degree of crystallinity is 30-60%.Further preferably, described PLA is selected from one or more in Poly-L-lactide, poly-D-ALPHA-Hydroxypropionic acid and poly-DL-lactic acid.
In the above-mentioned methods, the kind of other raw material of PLA toughening material also can be selected in wide scope, but in order to make PLA toughening material, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, described toughner is ACR (methacrylic resin), EGMA (ethylene-methyl acrylate-glyceryl methacrylate), PBS (polymkeric substance of poly-succinic-butanediol ester) and the trade mark be one or more in the toughner of ROHM AND HAAS PARALOIDTMBPM-500; 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 white oil and/or N, N'-ethylenebisstearamide; Described softening agent is Viscotrol C.
On the basis of above-mentioned all kinds of method, in order to make PLA toughening material, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, described method also comprises, before mixing also granulation, carry out drying to described poly(lactic acid), toughner and mineral filler, described poly(lactic acid) and toughner dry 2-4h at 60-80 DEG C, described mineral filler is dry 4-5h at 100-120 DEG C.
In above-mentioned all kinds of method, described operation of extruding can be that in this area, any one extrudes operation, but in order to make PLA toughening material, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, described extruding meets the following conditions: carry out in twin screw extruder, extrusion temperature is 175-200 DEG C, and screw speed is 200-400r/min, and the length-to-diameter ratio of screw rod is 30:1-50:1.
Present invention also offers the preparation method of the toughness reinforcing plastic uptake sheet material of a kind of PLA, above-mentioned PLA toughening material or the PLA toughening material obtained according to above-mentioned method are put on twin screw sheet extruder and carries out extruding compressing tablet with the toughness reinforcing plastic uptake sheet material of obtained PLA.In order to make the PLA toughness reinforcing plastic uptake sheet material obtained, there is more excellent collapse resistance power ability, elasticity and toughness, preferably, the screw slenderness ratio of described twin screw sheet extruder is 25:1-35:1, and extrusion temperature is 170-180 DEG C, and screw speed is 120-300r/min.
Invention further provides the toughness reinforcing plastic uptake sheet material of a kind of PLA, described PLA toughness reinforcing plastic uptake sheet material is prepared from by above-mentioned method.
Below will be described the present invention by embodiment.In following examples, twin screw extruder is the tailor-made product of the sub-complete equipment of chemical Equipment Limited of Nanjing section, and extrusion temperature is 175-200 DEG C, and screw speed is 200-400r/min, and the length-to-diameter ratio of screw rod is 30:1-50:1.Twin screw sheet extruder is the tailor-made product of the sub-complete equipment of chemical Equipment Limited of Nanjing section, and extrusion temperature is 170-180 DEG C, and screw speed is 120-300r/min, and the length-to-diameter ratio of screw rod is 25:1-35:1.Batch mixing high-speed mixer used, dry vacuum drying oven used are the conventional instrument in this area, and the detection method that the parameter of tensile strength, tensile modulus and elongation at break is all GB 13022-91 by state's label detects and obtains, described PLA is purchased from nature works company of the U.S., and its number-average molecular weight is 200000-400000, and molecular weight distribution is 1.15-2.0, and degree of crystallinity is 30-60%, ACR is the product of Kanegafuchi Chemical Industry Co., Ltd, EGMA is the product of French A Kema, PBS is the product that Shan Donghui is full of, PARALOIDTMBPM-500 is the product of ROHM AND HAAS, four [β-(3, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is the bright product of Nanjing Holley, three (2, 4-di-tert-butyl-phenyl) phosphorous acid ester is the bright product of Nanjing Holley, Viscotrol C is the product of Jishui County, Jiangxi Province Yikang natural perfume oil refinery, talcum powder is the product of the high-grade stone flour company limited in Haicheng City gold field, calcium carbonate is the product of the high-grade stone flour company limited in Haicheng City gold field, barium sulfate is the product of the high-grade stone flour company limited in Haicheng City gold field, wollastonite is the product of the high-grade stone flour company limited in Haicheng City gold field.
Embodiment 1
A, be poly(lactic acid) 93.5kg and EGMA5kg dry 3h at 70 DEG C of 4032D by the trade mark of nature works company of the U.S.;
B, with high-speed mixer, dried PLA and EGMA to be mixed, then add Viscotrol C 1kg, white oil 0.2kg, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3kg fully mixes;
C, mixed material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain PLA toughening material;
D, by above-mentioned PLA toughening material dry 4h at 80 DEG C;
E, dried PLA toughening material put in twin screw sheet forcing machine and extrudes compressing tablet and obtain the toughness reinforcing plastic uptake sheet material of PLA.
Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 2
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 1, difference changes EGMA into ACR.Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 3
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 1, difference changes EGMA into PBS.Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 4
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 1, difference is that EGMA to be changed into the trade mark be ROHM AND HAAS PARALOID
tMthe toughner (being abbreviated as BPM-500) of BPM-500.Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 5
A, be poly(lactic acid) 3.5kg and EGMA5kg dry 3h at 70 DEG C of 4032D by the trade mark of nature works company of the U.S., by 1250 object talcum powder 20kg dry 4h at 110 DEG C;
B, with high-speed mixer, dried PLA and EGMA to be mixed, then add Viscotrol C 1kg, white oil 0.2kg, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3kg and 1250 object talcum powder fully to mix;
C, mixed material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain PLA toughening material;
D, by above-mentioned PLA toughening material dry 4h at 80 DEG C;
E, dried PLA toughening material put in twin screw sheet forcing machine and extrudes compressing tablet and obtain the toughness reinforcing plastic uptake sheet material of PLA.
Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 6
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, difference changes 1250 object talcum powder into 2500 object talcum powder.Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 7
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, difference changes 1250 object talcum powder into 5000 object talcum powder.Concrete composition and consumption are in table 1, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 3.
Embodiment 8
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, difference changes 1250 object talcum powder into 2500 object calcium carbonate.Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Embodiment 9
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, difference changes 1250 object talcum powder into 2500 object barium sulfate.Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Embodiment 10
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, difference changes 1250 object talcum powder into 2500 object wollastonites.Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Embodiment 11
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 1, the consumption of difference to be the consumption of PLA be 79.5kg, EGMA is 15kg, and the consumption of Viscotrol C is 5kg.Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Embodiment 12
Carry out the toughness reinforcing plastic uptake sheet material of obtained PLA according to the method for embodiment 5, the consumption of difference to be the consumption of PLA be 59.5kg, EGMA is 15kg, and the consumption of Viscotrol C is 5kg, and talcous particle diameter is 2500 orders.Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Comparative example 1
A, be poly(lactic acid) 9.5kg dry 3h at 70 DEG C of 4032D by the trade mark of nature works company of the U.S.;
B, PLA after drying put into high-speed mixer, then add white oil 0.2kg, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3kg fully mixes;
C, mixed material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain cylindrical particulate hybrid resin;
D, to above-mentioned cylindrical particulate hybrid resin dry 4h at 80 DEG C;
E, dried cylindrical particulate hybrid resin put into twin screw sheet material machine and extrude compressing tablet and obtain polylactic acid sheet material.
Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Comparative example 2
A, by poly(lactic acid) 94.5kg and EGMA 5kg dry 3h at 70 DEG C;
B, PLA and EGMA after drying put into high-speed mixer, then add white oil 0.2kg and four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3kg and fully mix;
C, mixed material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain cylindrical particulate hybrid resin;
D, to above-mentioned cylindrical particulate hybrid resin dry 2h at 80 DEG C;
E, dried cylindrical particulate hybrid resin put into twin screw sheet material machine and extrude compressing tablet and obtain polylactic acid sheet material.
Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Comparative example 3
A, be poly(lactic acid) 4.5kg dry 3h at 70 DEG C of 4032D by the trade mark of nature works company of the U.S.;
B, dried PLA is put in high-speed mixer, then add Viscotrol C 5kg, white oil 0.2kg and four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 0.3kg and be fully mixed to evenly;
C, mixed material put into melt blending in twin screw extruder, tie rod, pelletizing, obtain cylindrical particulate hybrid resin;
D, to above-mentioned cylindrical particulate hybrid resin dry 4h at 80 DEG C;
E, dried cylindrical particulate hybrid resin put into twin screw sheet material machine and extrude compressing tablet and obtain polylactic acid sheet material.
Concrete composition and consumption are in table 2, and the tensile strength of the toughness reinforcing plastic uptake sheet material of this PLA, tensile modulus, elongation at break and transparency are in table 4.
Table 1
Table 2
Table 3
Table 4
Compared with embodiment 1 by comparative example 1-3, can learn that toughner (EGMA) and fluidizer (Viscotrol C) all can improve the toughness of poly(lactic acid), under the condition of same dose, castor oil plasticizing effect is slightly better than toughner EGMA.
From comparative example 1-3 and embodiment 1-4, softening agent (Viscotrol C) and toughner (EGMA) play synergy to PLA is then toughness reinforcing, both add the raising that membership promotes PLA toughness further simultaneously, and less on the transparency impact of PLA.
Contrast known by embodiment 5-10 and embodiment 1-4, mineral filler (talcum powder, calcium carbonate, barium sulfate and wollastonite) can make obtained polylactic acid sheet material opaque, the tensile modulus of polylactic acid sheet material can be improved simultaneously, improve the elongation at break of polylactic acid sheet material simultaneously, although draw high intensity to decline to some extent, but still remain on a very high intensity.Known by example 5-7, within the specific limits, polylactic acid sheet material intensity and toughness increase with talcum powder order number and increase.The order affecting size to polylactic acid sheet material modulus by embodiment 6 and the known mineral filler of embodiment 8-10 is wollastonite > talcum powder > calcium carbonate > barium sulfate.
Increased with the increase of toughner and plasticizer loading by the toughness of example 1, the known polylactic acid sheet material of example 11-12 and comparative example 2-3.
To sum up, PLA provided by the invention toughness reinforcing plastic uptake sheet material has and excellent has more excellent collapse resistance power ability, elasticity and toughness.
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 (10)
1. a PLA toughening material, is characterized in that, described toughening material contains PLA, toughner, oxidation inhibitor, lubricant and softening agent; Wherein, with the gross weight of described toughening material for benchmark, the content of described PLA is 78-96 % by weight, the content of described toughner is 3-15 % by weight, the content of described oxidation inhibitor is 0.3-1.5 % by weight, the content of described lubricant is 0.2-1 % by weight, and the content of described softening agent is 0.5-5 % by weight.
2. the toughening material according to claims 1, wherein, described toughening material also comprises mineral filler; Wherein, with the gross weight of described toughening material for benchmark, the content of described PLA is 65-96 % by weight, the content of described toughner is 3-15 % by weight, the content of described oxidation inhibitor is 0.3-1.5 % by weight, the content of described lubricant is 0.2-1 % by weight, and the content of described softening agent is 0.5-5 % by weight, and the content of described mineral filler is not more than 30 % by weight.
3. the toughening material according to claims 1 or 2, wherein, described PLA meets the following conditions: weight-average molecular weight is 200000-400000, and molecular weight distribution is 1.15-2.0, and degree of crystallinity is 30-60%;
Preferably, described PLA is selected from one or more in Poly-L-lactide, poly-D-ALPHA-Hydroxypropionic acid and poly-DL-lactic acid;
More preferably, described toughner is ACR, EGMA, PBS and the trade mark is ROHM AND HAAS PARALOID
tMone or more in the toughner of BPM-500; 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 white oil and/or N, N'-ethylenebisstearamide; Described softening agent is Viscotrol C; Preferably, described mineral filler is one or more in talcum powder, calcium carbonate, barium sulfate and wollastonite;
Further preferably, the order number of described mineral filler is 1250-8000 order.
4. a preparation method for PLA toughening material, is characterized in that, described method comprises PLA, toughner, oxidation inhibitor, lubricant and softening agent are mixed extruding pelletization in rear feeding forcing machine; Wherein, the consumption of each component makes the gross weight of the toughening material obtained for benchmark, with the gross weight of the material obtained for benchmark, the consumption of described PLA is 78-96 % by weight, the consumption of described toughner is 3-15 % by weight, the consumption of described oxidation inhibitor is 0.3-1.5 % by weight, and the consumption of described lubricant is 0.2-1 % by weight, and the consumption of described softening agent is 0.5-5 % by weight.
5. method according to claim 4, wherein, described method comprises PLA, toughner, oxidation inhibitor, lubricant, softening agent and mineral filler is mixed extruding pelletization in rear feeding forcing machine; Wherein, the consumption of each component makes the gross weight of the toughening material obtained for benchmark, with the gross weight of the material obtained for benchmark, the consumption of described PLA is 65-96 % by weight, the consumption of described toughner is 3-15 % by weight, and the consumption of described oxidation inhibitor is 0.3-1.5 % by weight, and the consumption of described lubricant is 0.2-1 % by weight, the consumption of described softening agent is 0.5-5 % by weight, and the consumption of described mineral filler is not more than 30 % by weight.
6. the toughening material according to claims 4 or 5, wherein, described PLA meets the following conditions: weight-average molecular weight is 200000-400000, and molecular weight distribution is 1.15-2.0, and degree of crystallinity is 30-60%;
Preferably, described PLA is selected from one or more in Poly-L-lactide, poly-D-ALPHA-Hydroxypropionic acid and poly-DL-lactic acid;
More preferably, described toughner is ACR, EGMA, PBS and the trade mark is ROHM AND HAAS PARALOID
tMone or more in the toughner of BPM-500; 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 white oil and/or N, N'-ethylenebisstearamide; Described softening agent is Viscotrol C; Preferably, described mineral filler is one or more in talcum powder, calcium carbonate, barium sulfate and wollastonite;
Further preferably, the order number of described mineral filler is 1250-8000 order.
7. the method according to claim 5 or 6, wherein, described method also comprises, before mixing also granulation, carry out drying to described poly(lactic acid), toughner and mineral filler, described poly(lactic acid) and toughner dry 2-4h at 60-80 DEG C, described mineral filler is dry 4-5h at 100-120 DEG C.
8. the method according to claim 5 or 6, wherein, described in extrude and meet the following conditions: carry out in twin screw extruder, extrusion temperature is 175-200 DEG C, and screw speed is 200-400r/min, and the length-to-diameter ratio of screw rod is 30:1-50:1.
9. the preparation method of the toughness reinforcing plastic uptake sheet material of PLA, it is characterized in that, the PLA toughening material that the PLA toughening material described in any one in claim 1-3 or the method according to any one in claim 4-8 obtain is put on twin screw sheet extruder and carries out extruding compressing tablet with the toughness reinforcing plastic uptake sheet material of obtained PLA;
Preferably, the screw slenderness ratio of described twin screw sheet extruder is 25:1-35:1, and extrusion temperature is 170-180 DEG C, and screw speed is 120-300r/min.
10. the toughness reinforcing plastic uptake sheet material of PLA, is characterized in that, described PLA toughness reinforcing plastic uptake sheet material is prepared from by method according to claim 9.
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| CN108976731A (en) * | 2018-05-28 | 2018-12-11 | 安徽聚美生物科技有限公司 | A kind of preparation method of polylactic acid opaque straw |
| WO2019100713A1 (en) * | 2017-11-27 | 2019-05-31 | 金发科技股份有限公司 | Polylactic acid composite material and application thereof |
| CN110066502A (en) * | 2019-04-25 | 2019-07-30 | 中国科学院长春应用化学研究所 | A kind of modified polylactic acid material and the preparation method and application thereof with low-temperature flexibility |
| CN115418088A (en) * | 2022-09-02 | 2022-12-02 | 苏州盛万达塑胶包装材料有限公司 | Toughened modified PLA sheet and preparation method thereof |
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| CN103804863A (en) * | 2013-09-02 | 2014-05-21 | 芜湖瀚博电子科技有限公司 | Biodegradable plastic line for three-dimensional (3D) printing |
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| CN103087483A (en) * | 2013-01-08 | 2013-05-08 | 常州百佳薄膜科技有限公司 | Biaxial drawing polylactic acid sheet for card-based core layer and preparation method thereof |
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Cited By (6)
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| CN104817834A (en) * | 2015-05-18 | 2015-08-05 | 哈尔滨盛洋塑胶材料有限公司 | PLA (polylactic acid) resin toughening-modified material and preparation method thereof |
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| CN110066502A (en) * | 2019-04-25 | 2019-07-30 | 中国科学院长春应用化学研究所 | A kind of modified polylactic acid material and the preparation method and application thereof with low-temperature flexibility |
| CN115418088A (en) * | 2022-09-02 | 2022-12-02 | 苏州盛万达塑胶包装材料有限公司 | Toughened modified PLA sheet and preparation method thereof |
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