CN113234305A - Degradable composite material and preparation method and application thereof - Google Patents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention relates to a degradable straw composite plastic which comprises the following components in parts by weight: 25-50 parts of PBAT, 20-50 parts of PLA, 10-25 parts of modified corn straw powder and 0.3-2.5 parts of additive, wherein the modifier adopted by the modified corn straw powder is a polyol surfactant. Through the modification of the polyalcohol surfactant to the corn straw powder, the compatibility and the dispersibility of the modified corn straw powder with the matrixes PLA and PBAT are greatly improved, the pipe processing and extrusion process is continuous and smooth, the problems of strip breakage and the like do not exist, and the impact and the tensile property are improved. The corn straw is derived from rural areas, is agricultural waste, belongs to the secondary utilization of agricultural waste, and can reduce the cost of the degradable composite material by using the corn straw as a raw material. The degradable straw made of the degradable composite material can replace a disposable polypropylene straw, and the development of green, environment-friendly and biodegradable composite materials is promoted.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a degradable composite material and a preparation method and application thereof.
Background
The plastic straw is difficult to decompose under natural conditions, and the pollution degree of the plastic straw follows the plastic bag, so that biodegradable plastics are gradually the focus of research. In the field of disposable straws which mainly comprise polypropylene originally, the demand of degradable materials is the most urgent. However, the price of the current biodegradable material is more than 2 times of that of the general plastic, which increases the cost of the straw. In order to reduce the cost, bio-based materials such as starch, cellulose, wood powder and bamboo powder are used as filling materials, biodegradable materials such as PLA (polylactic acid), PBAT (polybutylene adipate-terephthalate), PBS (polybutylene succinate) and PCL (polycaprolactone) are used as main materials, and the filling type degradable desorption tube material is prepared.
However, the compatibility of the bio-based material and the main material is poor, when the thin-wall parts such as the suction tube and the like are prepared, the bio-based material is easy to agglomerate and is easy to peel off from the main resin, and the thin-wall parts such as the suction tube and the like are easy to perforate, break the wall and the like. Meanwhile, due to the influence of grain crisis, the price of starch continuously rises, the quality of cellulose products is not high, and the prices of wood powder and bamboo powder are higher, so that the cost of the straw is indirectly increased, and the industrial production and application of the straw are limited.
Disclosure of Invention
Based on the above, the invention provides a degradable composite material which has better tensile and impact properties.
The technical scheme of the invention for solving the technical problems is as follows.
The degradable composite material comprises the following components in parts by weight:
the modified corn straw powder is the corn straw powder modified by the polyalcohol surfactant.
In some embodiments, the degradable composite material comprises at least one polyol surfactant selected from sorbitol, glycerol and polyethylene glycol.
In some embodiments, in the preparation raw materials of the modified corn straw powder in the degradable composite material, the mass ratio of the corn straw powder to the polyol surfactant is 1 (0.1-0.6).
In some embodiments, the degradable composite material is prepared by mixing the corn straw powder and the aqueous solution of the polyol surfactant, and drying; the mass ratio of the dry corn straw powder to the aqueous solution of the polyalcohol surfactant is 1 (0.2-0.8); the mass fraction of the water solution of the polyol surfactant is 50-70%.
In some embodiments, the degradable composite material contains water in an amount of less than or equal to 1 wt% of the modified cornstalk powder.
In some embodiments, the degradable composite material comprises the following components in parts by weight:
in some embodiments, the degradable composite material has a melt index of PBAT of 1g/10min to 10g/10min and a melt index of PLA of 3g/10min to 30g/10 min.
In some embodiments, the degradable composite material comprises at least one additive selected from the group consisting of a compatibilizer, a lubricant, and a pore opener.
In some embodiments, in the degradable composite material, the additive comprises the following components in parts by weight:
0.1-0.5 part of compatilizer, 0.1-1 part of lubricant and 0.1-1 part of opening agent.
In some embodiments, the degradable composite material comprises a compatibilizer, basf ADR-4468.
In some embodiments, the degradable composite material comprises at least one lubricant selected from the group consisting of PEG400, PEG10000 and erucamide.
In some embodiments, the degradable composite material comprises at least one opening agent selected from talc powder and calcium carbonate.
A preparation method of a degradable composite material comprises the following steps:
and melting, extruding and granulating the PBAT, the PLA, the modified corn straw powder and the additive, wherein the extrusion temperature range is 160-180 ℃.
The invention also provides an application of the degradable composite material in preparing degradable plastic products.
A degradable plastic article comprising the degradable composite material as described above.
In some embodiments, the degradable plastic product is a degradable straw.
Compared with the prior art, the degradable straw has the following beneficial effects:
the invention selects a bio-based filling material-corn straw powder with wide sources, and through tests, the corn straw contains lignin, cellulose, hemicellulose, mineral substances and other components. The corn straw powder is further modified by a specific modifier, namely a polyol surfactant, so that the compatibility and the dispersibility between the modified corn straw powder and the matrixes PLA and PBAT are greatly improved, the pipe is continuous and smooth in the pipe processing and extruding process, the problems of strip breakage and the like do not exist, and the impact and tensile properties are improved. The corn straw is derived from rural areas, is agricultural waste, belongs to the secondary utilization of agricultural waste, and can reduce the cost of the degradable composite material by using the corn straw as a raw material. The degradable straw made of the degradable composite material can replace a disposable polypropylene straw, and the development of green, environment-friendly and biodegradable composite materials is promoted.
Detailed Description
The degradable composite material, the preparation method and the application thereof of the present invention are further described in detail with reference to the following specific examples. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The weight of the related components mentioned in the description of the embodiments of the present invention may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present invention as long as it is in accordance with the description of the embodiments of the present invention. Specifically, the weight described in the description of the embodiment of the present invention may be a unit of mass known in the chemical industry field, such as μ g, mg, g, and kg.
The invention provides a degradable composite material, which comprises the following components in parts by weight:
wherein the modified corn straw powder is the corn straw powder modified by the polyalcohol surfactant.
It can be understood that PLA is a hard and brittle substance, PBAT is a soft and tough substance, and when one of them is adopted, the forming processing requirements and the using requirements of the straw can not be met. The PBAT and the PLA are matched, so that the forming processing and using requirements of the straw can be met; furthermore, the modifier is compatible with the corn straw powder modified by the polyalcohol surfactant, so that the bulk density of materials such as the straw powder and the like can be effectively improved, and the uniformity of material mixing and discharging is improved; namely, the compatibility and the dispersibility of the corn straw powder modified by the polyalcohol surfactant with the matrixes PLA and PBAT are greatly improved, the corn straw powder is continuous and smooth in the pipe processing and extruding process, the problems of strip breakage and the like do not exist, and the impact and the tensile properties are improved.
In some examples, the degradable composite material has a mass ratio of PBAT to PLA of (0.4-1.5): 1.
In some examples, the degradable composite material has a mass ratio of PBAT to PLA of (0.68-1.15): 1.
In some examples, the degradable composite material comprises the following components in parts by weight:
in some examples, the degradable composite material comprises the following components in parts by weight:
in some examples, the degradable composite material has a melt index of PBAT from 1g/10min to 10g/10min and a melt index of PLA from 3g/10min to 30g/10 min.
In a specific example, the degradable composite material has a melt index of PBAT of 6g/10min and a melt index of PLA of 3g/10 min.
In some examples, the degradable composite material includes a polyol surfactant selected from at least one of sorbitol, glycerol, and polyethylene glycol.
It is understood that the modifier may be one of sorbitol, glycerol and polyethylene glycol, two of sorbitol, glycerol and polyethylene glycol, or three of sorbitol, glycerol and polyethylene glycol.
When sorbitol, glycerol and polyethylene glycol are used as modifiers, the dispersibility of the straw powder in the matrix resin is improved, and the stability of the modified material is ensured.
In one preferred embodiment, the degradable composite material is one in which the modifier is selected from sorbitol.
In some examples, the modified corn straw powder in the degradable composite material is prepared from raw materials, wherein the mass ratio of the corn straw powder to the polyol surfactant is 1 (0.1-0.6).
In some examples, the degradable composite material is prepared by mixing the corn straw powder and the aqueous solution of the polyol surfactant, and drying.
It can be understood that the corn straw powder and the aqueous solution of the polyol surfactant are directly dried without being filtered after being mixed.
In some examples, the degradable composite material has a mass ratio of the dry corn straw powder to the aqueous solution of the polyol surfactant of 1 (0.2-0.8).
In some examples, the degradable composite material has a mass fraction of the aqueous solution of the polyol surfactant of 50% to 70%.
It can be understood that the aqueous solution form of the modifier is adopted to modify the corn straw powder, so that the dispersion effect is better.
In some examples, the degradable composite material comprises 55-65% of the aqueous solution of the modifying agent by mass.
In a preferred example, the degradable composite material has a mass fraction of the aqueous solution of the modifying agent of 60%.
In some examples, the modified corn straw meal in the degradable composite material is prepared by grinding dry corn straw using a mill.
In some examples, the modified corn straw powder in the degradable composite material is prepared by a method in which the particle size of the dry corn straw powder is 80-1000 mesh.
In some examples, the modified corn straw powder in the degradable composite material is prepared by a method in which the particle size of the dry corn straw powder is 80-200 mesh.
In a specific example, in the method for preparing the modified corn straw powder in the degradable composite material, the particle size of the corn straw powder is 100 meshes.
In some examples, in the preparation method of the modified corn straw powder in the degradable composite material, the mass ratio of the dry corn straw powder to the aqueous solution of the modifying agent is 1 (0.2-0.8).
In some examples, in the preparation method of the modified corn straw powder in the degradable composite material, the mass ratio of the dry corn straw powder to the aqueous solution of the modifying agent is 1 (0.25-0.67).
In a specific example thereof, in the method for preparing the modified corn straw powder in the degradable composite material, the mass ratio of the dry corn straw powder to the aqueous solution of the modifying agent is 1: 0.5.
In some examples, in the preparation method of the modified corn straw powder in the degradable composite material, the drying temperature of the mixture of the crushed dry corn straw and the aqueous solution of the modifier is 70-90 ℃, and the drying time is 8-12 h.
In some examples, in the preparation method of the modified corn straw powder in the degradable composite material, the drying temperature of the mixture of the crushed dry corn straw and the aqueous solution of the modifier is 75-85 ℃, and the drying time is 9-11 hours.
In some examples, the method for preparing the modified corn straw powder in the degradable composite material comprises the step of mixing the crushed dry corn straw with the aqueous solution of the modifier, and then drying the mixture at the temperature of 80 ℃ for 10 hours.
In some examples, in the preparation method of the modified corn straw powder in the degradable composite material, the water content of the modified corn straw powder obtained after drying is less than or equal to 1 wt%.
It can be understood that the drying time after mixing the crushed dry corn stalks with the aqueous solution of the modifier is determined according to the water content of the modified corn stalk powder obtained after drying being less than or equal to 1 wt%.
It can be understood that the moisture content of the modified cornstalk powder is controlled below 1 wt%, which can prevent the extrusion material from foaming due to moisture, and the resin can be degraded due to too high moisture content.
In some of these examples, the degradable composite material wherein the additive is selected from at least one of a compatibilizing agent, a lubricant, and a mouth-opening agent.
It is to be understood that the additive may be selected from one of a compatibilizer, lubricant, and a mouth-opening agent; or, the additive is selected from two of a compatilizer, a lubricant and an opening agent; or, the compatilizer, the lubricant and the opening agent are simultaneously contained.
In some of these examples, the additive is selected from the group consisting of a compatibilizer, a lubricant, and a opener.
In some of these examples, the degradable composite material the compatibilizer is basf ADR-4468.
In some of these examples, the degradable composite material wherein the lubricant is selected from at least one of PEG400, PEG10000, and erucamide.
In some specific examples, the lubricant is PEG400 in the degradable composite material.
In some of these examples, the degradable composite material has an opening agent selected from at least one of talc and calcium carbonate.
Optionally, the talc powder is ultrafine talc powder, and the calcium carbonate is nano calcium carbonate. It can be understood that the size of the superfine talcum powder is not less than 3000 meshes, and the size of the nano calcium carbonate is not less than 2000 meshes; the talcum powder and the calcium carbonate with the sizes have the characteristics of good opening effect and stable performance.
In some specific examples, the opening agent is ultrafine talc in the degradable composite material.
In some examples, the degradable composite material comprises the following components in parts by weight:
0.1-0.5 part of compatilizer, 0.1-1 part of lubricant and 0.1-1 part of opening agent.
In some examples, the degradable composite material comprises the following components in parts by weight:
0.1-0.3 part of compatilizer, 0.1-0.6 part of lubricant and 0.3-0.8 part of opening agent.
In some specific examples, the degradable composite material comprises the following components in parts by weight:
0.1 part of compatilizer, 0.4 part of lubricant and 0.5 part of opening agent.
An embodiment of the invention provides a preparation method of a degradable composite material, which comprises the following steps:
the PBAT, the PLA, the modified corn straw powder and the additive are melted and extruded, and the extrusion temperature range is 160-180 ℃.
It will be appreciated that the melt extrusion step may be carried out in a single screw extruder or a twin screw extruder.
In some specific examples, the melt extrusion step is performed in a twin screw extruder in the method of making the degradable composite material.
In some specific examples, in the preparation method of the degradable composite material, the length-diameter ratio of a double-screw extruder is 44:1, and the screw rotating speed is 150 rpm-300 rpm.
One embodiment of the invention provides an application of a degradable composite material in preparing a degradable plastic product.
The embodiment of the invention also provides a degradable plastic product which comprises the degradable composite material.
In some of these examples, the degradable plastic article is a degradable straw.
The invention selects a bio-based filling material-corn straw powder with wide sources, and through tests, the corn straw contains lignin, cellulose, hemicellulose, mineral substances and other components. The corn straw powder is further modified by a specific modifier, namely a polyol surfactant, so that the compatibility and the dispersibility of the modified corn straw powder with the matrixes PLA and PBAT are greatly improved, the problems of strip breakage and the like are continuously solved in the pipe processing and extruding process, and the impact and tensile properties are improved. The corn straw is derived from rural areas, is agricultural waste, belongs to the secondary utilization of agricultural waste, and can reduce the cost of the degradable composite material by using the corn straw as a raw material. The degradable straw made of the degradable composite material can replace a disposable polypropylene straw, and the development of green, environment-friendly and biodegradable composite materials is promoted.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Hereinafter, the degradable composite material and the preparation method and application thereof according to the present invention will be exemplified, and it is understood that the degradable composite material and the preparation method and application thereof are not limited to the following examples.
Preparing modified corn straw powder A:
60 parts of dry corn straw and 30 parts of sorbitol aqueous solution with the mass fraction of 60% are fully mixed and dried for 10 hours at the temperature of 80 ℃.
Preparing modified corn straw powder B:
mixing 80 parts of dry corn straw and 25 parts of glycerol aqueous solution with the mass fraction of 65% thoroughly, and drying at 80 ℃ for 10 hours.
Preparing modified corn straw powder C:
60 parts of dry corn straws and 40 parts of polyethylene glycol aqueous solution with the mass fraction of 55% are fully mixed and dried for 10 hours at the temperature of 80 ℃.
Preparing modified corn straw powder D:
60 parts of dry corn straw and 30 parts of sorbitol aqueous solution with the mass fraction of 30% are fully mixed and dried for 10 hours at the temperature of 80 ℃.
Preparing modified corn straw powder E:
and (2) fully mixing 60 parts of dry corn straws with 60 parts of sorbitol aqueous solution with the mass fraction of 60%, and drying for 10 hours at 80 ℃.
Preparing modified corn straw powder F:
60 parts of dry corn straw and 30 parts of sorbitol are fully mixed and dried for 10 hours at 80 ℃.
The melt index of PBAT used below was 6g/10min, that of PLA was 3g/10min, and that of PBS was 6g/10 min.
Example 1
Weighing the following raw materials: 15 parts of modified corn straw powder A, 44 parts of PBAT, 40 parts of PLA, 4000.4 parts of PASF ADR-44680.1 parts of PEG and 0.5 part of superfine talcum powder (4000 meshes);
the preparation method comprises the following steps: adding the weighed raw materials into a high-speed mixing pot, uniformly mixing for 3min at 1000 rpm, plasticizing and granulating by a double-screw extruder at the processing temperature of 180 ℃, and extruding and molding by a single-screw extruder to obtain the pipe.
Example 2
Basically the same as example 1, except that:
weighing the following raw materials: 15 parts of modified corn straw powder B, 34 parts of PBAT, 50 parts of PLA, 50 parts of basf ADR-44680.1 parts, 100000.4 parts of PEG and 0.5 part of nano calcium carbonate (4000 meshes).
Example 3
Basically the same as example 1, except that:
weighing the following raw materials: 13 parts of modified corn straw powder C, 46 parts of PBAT, 40 parts of PLA, 0.4 part of Pasteur ADR-44680.1 part, and 0.5 part of ultrafine talcum powder (4000 meshes).
Example 4
The modified corn straw powder a was replaced with modified corn straw powder D, which was substantially the same as in example 1, except that:
weighing the following raw materials: 15 parts of modified corn straw powder D, 44 parts of PBAT, 40 parts of PLA, 4000.4 parts of PASF ADR-44680.1 parts of PEG and 0.5 part of superfine talcum powder (4000 meshes).
Example 5
The modified corn straw powder a was replaced with modified corn straw powder E, which was substantially the same as in example 1, except that:
weighing the following raw materials: modified corn straw powder E15 parts, PBAT 44 parts, PLA 40 parts, basf ADR-44680.1 parts, PEG 4000.4 parts and superfine talcum powder (4000 meshes) 0.5 part.
Example 6
The modified corn straw powder a was replaced with the modified corn straw powder F, which was substantially the same as in example 1, except that:
weighing the following raw materials: modified corn straw powder F15 parts, PBAT 44 parts, PLA 40 parts, basf ADR-44680.1 parts, PEG 4000.4 parts and superfine talcum powder (4000 meshes) 0.5 part.
Comparative example 1
The method is basically the same as the embodiment 1, and is different from the method that the corn straw powder is not modified by the polyalcohol surfactant, and the method comprises the following steps:
weighing the following raw materials: 15 parts of corn straw powder, 44 parts of PBAT, 40 parts of PLA, 6 parts of basf ADR-44680.1 parts, 4000.4 parts of PEG and 0.5 part of superfine talcum powder (4000 meshes).
Comparative example 2
The method is basically the same as the method in the embodiment 1, and is different in that the corn straw powder is not modified by adopting the polyol surfactant in advance, and the corn straw powder, the modifier and other components are directly mixed at the same time, and the method comprises the following specific steps:
weighing the following raw materials: 15 parts of corn straw powder, 44 parts of PBAT, 40 parts of PLA, 40 parts of 60% sorbitol aqueous solution, 40 parts of basf ADR-44680.1 parts, 4000.4 parts of PEG and 0.5 part of superfine talcum powder (4000 meshes).
Comparative example 3
The method is basically the same as the embodiment 1, and is different from the embodiment 1 in the mass fraction of each component, and specifically comprises the following steps:
weighing the following raw materials: 15 parts of modified corn straw powder A, 60 parts of PBAT, 20 parts of PLA, 44680.1 parts of BASF ADR, 4000.4 parts of PEG and 0.5 part of superfine talcum powder.
Comparative example 4
According to the weight portion, PP T30s 99 parts and 1 part of superfine talcum powder are melted and mixed, and then are extruded and molded to prepare the pipe.
The mass parts of the components added in examples 1 to 6 and comparative examples 1 to 4 are shown in Table 1.
TABLE 1
The performance tests of the degradable composite materials prepared in examples 1-6 and comparative examples 1-4 were carried out according to the following criteria:
the tensile strength test refers to GB/T1040-;
the elongation at break test is referred to GB/T1040-;
the flexural modulus test is referred to GB/T9341-2008;
the impact strength test refers to GB/T1843-2008;
the melt index test refers to GB/T3682-2018;
and the processability thereof was measured, and the results are shown in Table 2.
TABLE 2
As can be seen from table 2, in the examples, compared with comparative example 1, the unmodified corn straw powder was inferior to the modified corn straw powder in terms of processing and performance, mainly because the compatibility and dispersibility of the modified corn straw powder with the matrix resin were greatly improved, so the extrusion process was continuous, the problems of strip breakage and the like did not occur, and the impact and tensile properties were improved. Compared with the comparative example 2, the straw powder adopted in the example is dried, so that the moisture content is in a proper range, the performance is not reduced, and the processability is met. Compared with the comparative example 3, the proportion of PBAT and PLA is proper, and the processing and the usability of the straw are met.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The degradable composite material is characterized by comprising the following components in parts by weight:
the modified corn straw powder is the corn straw powder modified by the polyalcohol surfactant.
2. The degradable composite of claim 1, wherein said polyol surfactant is selected from at least one of sorbitol, glycerol and polyethylene glycol.
3. The degradable composite material of claim 2, wherein the mass ratio of the corn straw powder to the polyol surfactant in the raw materials for preparing the modified corn straw powder is 1 (0.1-0.6).
4. The degradable composite material of claim 3, wherein said modified corn straw powder is prepared by mixing an aqueous solution of said polyol surfactant with said corn straw powder and drying;
the mass ratio of the dry corn straw powder to the aqueous solution of the polyalcohol surfactant is 1 (0.2-0.8); the mass fraction of the water solution of the polyol surfactant is 50-70%.
5. The degradable composite of any of claims 1 to 4, wherein the PBAT has a melt index of 1g/10min to 10g/10min and the PLA has a melt index of 3g/10min to 30g/10 min.
6. The degradable composite of any one of claims 1 to 4, wherein the additive is selected from at least one of a compatibilizer, a lubricant, and a mouth-opening agent.
7. The method for preparing the degradable composite material according to any one of claims 1 to 6, comprising the steps of:
and melting, extruding and granulating the PBAT, the PLA, the modified corn straw powder and the additive, wherein the extrusion temperature range is 160-180 ℃.
8. Use of the degradable composite material as claimed in any one of claims 1 to 6 in the preparation of a degradable plastic article.
9. A degradable plastic product comprising the degradable composite material according to any one of claims 1 to 6.
10. The degradable plastic article of claim 9, wherein said degradable plastic article is a degradable straw.
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Cited By (2)
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| CN115746512A (en) * | 2022-11-17 | 2023-03-07 | 江苏省农业科学院 | Method for preparing mulching film based on superfine straw/calcium carbonate powder and product thereof |
| CN116376236A (en) * | 2023-01-30 | 2023-07-04 | 吉安市碳宝新材料有限公司 | Preparation technology of superfine plant fiber powder composite full-falling agricultural film material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160297962A1 (en) * | 2015-04-13 | 2016-10-13 | Api Intellectual Property Holdings, Llc | Methods and additives for improving melt strength in polymer film processing and blow molding |
| CN106336531A (en) * | 2016-09-12 | 2017-01-18 | 葛袁园 | Modified corn straw granule enhanced PBAT [poly(butyleneadipate-co-terephthalate)] starch composite material and preparation method thereof |
| CN107828225A (en) * | 2017-11-07 | 2018-03-23 | 桂林奥尼斯特节能环保科技有限责任公司 | A kind of compound package material and preparation method thereof |
| CN108003645A (en) * | 2017-12-28 | 2018-05-08 | 武汉华丽环保科技有限公司 | A kind of complete biodegradable stalk injection-moulded plastic and preparation method thereof |
| CN110218424A (en) * | 2019-06-05 | 2019-09-10 | 辽宁东盛塑业有限公司 | Straw powder/PLA/PBAT biomass full degradable plastics and preparation method |
| CN112159580A (en) * | 2020-10-16 | 2021-01-01 | 刘喜文 | Preparation method of completely degradable agricultural plastic film |
| CN112321903A (en) * | 2020-12-03 | 2021-02-05 | 宿松晨辉塑料制品有限公司 | Biodegradable composite plastic production process |
| CN112341763A (en) * | 2020-09-11 | 2021-02-09 | 喀什中天节水科技有限公司 | PBAT composite material film and preparation method and application thereof |
-
2021
- 2021-05-14 CN CN202110527623.4A patent/CN113234305A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160297962A1 (en) * | 2015-04-13 | 2016-10-13 | Api Intellectual Property Holdings, Llc | Methods and additives for improving melt strength in polymer film processing and blow molding |
| CN106336531A (en) * | 2016-09-12 | 2017-01-18 | 葛袁园 | Modified corn straw granule enhanced PBAT [poly(butyleneadipate-co-terephthalate)] starch composite material and preparation method thereof |
| CN107828225A (en) * | 2017-11-07 | 2018-03-23 | 桂林奥尼斯特节能环保科技有限责任公司 | A kind of compound package material and preparation method thereof |
| CN108003645A (en) * | 2017-12-28 | 2018-05-08 | 武汉华丽环保科技有限公司 | A kind of complete biodegradable stalk injection-moulded plastic and preparation method thereof |
| CN110218424A (en) * | 2019-06-05 | 2019-09-10 | 辽宁东盛塑业有限公司 | Straw powder/PLA/PBAT biomass full degradable plastics and preparation method |
| CN112341763A (en) * | 2020-09-11 | 2021-02-09 | 喀什中天节水科技有限公司 | PBAT composite material film and preparation method and application thereof |
| CN112159580A (en) * | 2020-10-16 | 2021-01-01 | 刘喜文 | Preparation method of completely degradable agricultural plastic film |
| CN112321903A (en) * | 2020-12-03 | 2021-02-05 | 宿松晨辉塑料制品有限公司 | Biodegradable composite plastic production process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115746512A (en) * | 2022-11-17 | 2023-03-07 | 江苏省农业科学院 | Method for preparing mulching film based on superfine straw/calcium carbonate powder and product thereof |
| WO2024103692A1 (en) * | 2022-11-17 | 2024-05-23 | 江苏省农业科学院 | Ultrafine straw/calcium carbonate powder-based method for preparing mulch film and product prepared therefrom |
| CN116376236A (en) * | 2023-01-30 | 2023-07-04 | 吉安市碳宝新材料有限公司 | Preparation technology of superfine plant fiber powder composite full-falling agricultural film material |
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