CN111303594A - Full-biodegradable mulching film for cigarettes and preparation method thereof - Google Patents
Full-biodegradable mulching film for cigarettes and preparation method thereof Download PDFInfo
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- CN111303594A CN111303594A CN202010216134.2A CN202010216134A CN111303594A CN 111303594 A CN111303594 A CN 111303594A CN 202010216134 A CN202010216134 A CN 202010216134A CN 111303594 A CN111303594 A CN 111303594A
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 63
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 46
- AXKZIDYFAMKWSA-UHFFFAOYSA-N 1,6-dioxacyclododecane-7,12-dione Chemical compound O=C1CCCCC(=O)OCCCCO1 AXKZIDYFAMKWSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 30
- 239000004626 polylactic acid Substances 0.000 claims abstract description 30
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims abstract description 30
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 23
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 22
- 238000000071 blow moulding Methods 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 19
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 230000007062 hydrolysis Effects 0.000 claims abstract description 10
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 150000001718 carbodiimides Chemical class 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 4
- 125000003504 2-oxazolinyl group Chemical class O1C(=NCC1)* 0.000 claims description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 230000000655 anti-hydrolysis Effects 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 22
- 241000208125 Nicotiana Species 0.000 abstract description 21
- 230000002015 leaf growth Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 15
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 238000011161 development Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
The invention discloses a full-biodegradable mulching film for cigarettes and a preparation method thereof, wherein the raw materials of the mulching film comprise the following components: poly (butylene adipate/terephthalate): 100-120 parts; polylactic acid: 10-30 parts; calcium carbonate: 0.1-3 parts; talc powder: 0.1-2 parts; a compatilizer: 1-5 parts; a slipping agent: 0.01-0.5 part; an opening agent: 0.1-1 part; antioxidant: 0.01-1 part; ultraviolet absorber: 0.01-0.5 part; anti-aging agent: 0.01-0.5 part; hydrolysis resistance agent: 0.1-1 part. The production process of the mulching film comprises the following steps: drying the poly (butylene adipate/terephthalate) and the polylactic acid, and then putting into a stirrer for stirring; sequentially adding other raw materials while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder; cooling the extruded material, cutting into particles, and drying the cut material to obtain a modified material; and adding the modified material into a blow molding machine, and completing the production of the mulching film after molding, cooling and winding. The invention meets the requirement of the tobacco leaf growth cycle in plateau areas, is completely degraded after use, protects the environment, increases the production and creates the income.
Description
Technical Field
The invention belongs to the technical field of biodegradable mulching films, and particularly relates to a full-biodegradable mulching film for cigarettes and a preparation method thereof.
Background
The flue-cured tobacco planting industry is a 'short, flat and fast' hot industry which is time-saving, labor-saving, fast in economic benefit recovery and reliable, is suitable for planting and development in many rural areas in China, and is particularly suitable for southwest areas where inland, sea, land and air traffic conditions are extremely deficient. After the flue-cured tobacco is planted, the tobacco leaves are made into various cigarettes, so that not only is a great amount of tax revenue generated for the country created, but also the economic income of local farmers is increased, and the development of local economy is promoted.
Influenced by geographical and climatic factors in southwest regions, in order to ensure healthy and rapid growth of flue-cured tobacco plants, the tobacco seedlings are covered by a mulching film after being planted, and the mulching film has the effects of reducing rainwater strike and preventing scouring and caking formation; the evaporation of soil moisture can be effectively reduced, the soil moisture is preserved on the dry day, and the soil moisture is extracted after rain, so that the absorption, growth and development of the crops on the moisture are promoted, and the utilization efficiency of the soil moisture is improved; the soil can keep proper temperature and humidity, the ground temperature is slowly reduced, the duration is long, the decomposition and the decomposition of the fertilizer are facilitated, and the soil fertility is improved. The mulching film has low cost, convenient use and large yield increase range, and is a common measure which can prevent water and soil loss and improve the crop yield.
However, the mulching film is widely used but is not reasonably recycled, and the residual mulching film in the farmland causes white pollution. The currently used mulching film is generally made of polyethylene or polyvinyl chloride materials, and the mulching film remained in soil is difficult to degrade, so that soil hardening and fertility reduction are caused, water and nutrient supply of the soil to crops are hindered, the growth and development of the crops are greatly influenced, the quality of agricultural products is reduced, and economic loss is caused.
Due to excellent degradability, the fully biodegradable film solves the problems of white pollution caused by residual mulching film and reduction of soil quality, and is an effective way for providing sustainable development of agriculture.
However, the growth period of tobacco is long, the ultraviolet ray in plateau areas is strong, the temperature difference between day and night is large, the environment is severe, the general biodegradable mulching film cannot meet the growth requirement of the tobacco in the plateau areas, the tobacco leaves are damaged without being harvested, and the growth of the tobacco leaves in later periods is hindered.
Disclosure of Invention
The invention aims to solve the problems that: the full-biodegradable mulching film for the cigarettes and the preparation method thereof are provided, so that the planting and growing requirements of tobacco in plateau areas are met, ultraviolet ray and temperature difference impact are resisted, the using time of the mulching film is prolonged, the degradation starting time of the mulching film is close to the tobacco harvesting time, and soil plowing is facilitated.
The technical scheme adopted by the invention is as follows: the full-biodegradable mulching film for the cigarettes comprises the following raw materials in parts by mass:
poly (butylene adipate/terephthalate): 100-120 parts;
polylactic acid: 10-30 parts;
calcium carbonate: 0.1-3 parts;
talc powder: 0.1-2 parts;
a compatilizer: 1-5 parts;
a slipping agent: 0.01-0.5 part;
an opening agent: 0.1-1 part;
antioxidant: 0.01-1 part;
ultraviolet absorber: 0.01-0.5 part;
anti-aging agent: 0.01-0.5 part;
hydrolysis resistance agent: 0.1-1 part.
Further, the full-biodegradable mulching film for the cigarettes comprises the following raw materials in parts by weight:
poly (butylene adipate/terephthalate): 110 parts of (A);
polylactic acid: 20 parts of (1);
calcium carbonate: 1 part;
talc powder: 1 part;
a compatilizer: 2 parts of (1);
a slipping agent: 0.3 part;
an opening agent: 0.4 part;
antioxidant: 0.4 part;
ultraviolet absorber: 0.25 part;
anti-aging agent: 0.4 part;
hydrolysis resistance agent: 0.3 part.
Further, the full-biodegradable mulching film for the cigarettes comprises the following raw materials in parts by weight:
poly (butylene adipate/terephthalate): 105 parts of (A);
polylactic acid: 15 parts of (1);
calcium carbonate: 1 part;
talc powder: 0.5 part;
a compatilizer: 2 parts of (1);
a slipping agent: 0.3 part;
an opening agent: 0.4 part;
antioxidant: 0.4 part;
ultraviolet absorber: 0.25 part;
anti-aging agent: 0.4 part;
hydrolysis resistance agent: 0.3 part.
Further, the particle size of the calcium carbonate is 10-28 μm; the particle size of the talcum powder is not less than 800 meshes.
Further, the opening agent includes one or more of diatomaceous earth, silica, and silicone.
Further, the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076, antioxidant DPN, antioxidant TPN and antioxidant 264.
Further, the ultraviolet absorbent is UV-326, UV-327, UV-328, UV-360 or UV-234.
Further, the hydrolysis resistant agent is one of carbodiimide monomers, toluene-2, 4-diisocyanate, diphenylmethane diisocyanate, 2-oxazoline compounds and aromatic polycarbodiimide.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 40-60 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, an opening agent, an antioxidant, an ultraviolet absorbent, an anti-aging agent and an anti-hydrolysis agent while stirring, and feeding the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) and adding the dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at a head of the blow molding machine, filtering and removing impurities by the head, extruding a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, and cutting and winding after traction cooling to obtain the fully biodegradable mulching film.
Further, the extrusion temperature of the blow molding machine in the step (4) is 140-190 ℃.
Further, the blow molding ratio in the production process is not less than 2.5; the traction ratio is 30-120 times.
Compared with the prior art, the invention has the beneficial effects that:
(1) the effective time of the mulching film can be controlled by the effective proportion of the antioxidant, the ultraviolet absorber and the anti-aging agent; by adding the talcum powder and the slipping agent, the extensibility and the shape stability of the mulching film are enhanced, the tensile strength and the shear strength are increased, the deformation is reduced, the uniform dispersion of the granularity of the mulching film is facilitated, the infrared rays are effectively blocked, the resistance of the mulching film is improved, and the service life is further prolonged; the slip agent not only increases the extensibility of the mulching film, but also is fine and smooth without crystal points, and is matched with the opening agent to ensure that the mulching film is smooth, fine and rich in tension, so that dew or water drop adhesion is effectively reduced, and the mulching film is prevented from being damaged due to focusing caused by sunlight irradiation.
(2) The mulching film obtained by the invention has high strength and good toughness, resists day and night temperature difference and strong wind impact in a plateau area, has less damage in the using process, and reduces the film changing and supplementing frequency.
(3) Aiming at tobacco planting in Yugui plateau areas, the mulching film meets the requirement of the growth cycle of tobacco, and meanwhile, the mulching film starts to decompose when the tobacco is harvested soon, and when soil is ploughed, no large mulching film is left on the land, so that next ploughing is convenient.
(4) Due to the existence of pores, the added hydrolysis resistant agent plays a role in blocking water, prevents water in the film from evaporating, and effectively achieves the effects of heat preservation and moisture preservation.
Detailed Description
The following examples of the present invention will be described in detail, which are exemplary and intended to illustrate the invention, but are not to be construed as limiting the invention.
Example 1
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 100 parts of (A); polylactic acid: 12 parts of (1); 15 μm calcium carbonate: 0.1 part; 1000 mesh talc powder: 0.1 part; a compatilizer: 1 part; a slipping agent: 0.02 part; silicon dioxide: 0.1 part; antioxidant 1010: 0.02 part; UV-326: 0.02 part; anti-aging agent: 0.01 part; carbodiimide monomer: 0.2 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 60 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicon dioxide, an antioxidant 1010, UV-326, an anti-aging agent and a carbodiimide monomer while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the material after cutting into particles, and obtaining a modified material, wherein the water content of the material after cutting into particles is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, extruding a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
Example 2
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 115 parts of (B); polylactic acid: 25 parts of (1); 15 μm calcium carbonate: 2 parts of (1); 1000 mesh talc powder: 1 part; a compatilizer: 3 parts of a mixture; a slipping agent: 0.2 part; silicon dioxide: 1 part; antioxidant 1010: 0.5 part; UV-326: 0.2 part; anti-aging agent: 0.1 part; carbodiimide monomer: 0.5 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 60 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicon dioxide, an antioxidant 1010, UV-326, an anti-aging agent and a carbodiimide monomer while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, discharging a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
Example 3
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 120 parts of (A); polylactic acid: 30 parts of (1); 15 μm calcium carbonate: 3 parts of a mixture; 1000 mesh talc powder: 2 parts of (1); a compatilizer: 2 parts of (1); a slipping agent: 0.3 part; silicon dioxide: 0.5 part; antioxidant 1010: 0.5 part; UV-326: 0.2 part; anti-aging agent: 0.2 part; carbodiimide monomer: 0.5 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 60 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicon dioxide, an antioxidant 1010, UV-326, an anti-aging agent and a carbodiimide monomer while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, discharging a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
Example 4
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 100 parts of (A); polylactic acid: 12 parts of (1); 15 μm calcium carbonate: 0.1 part; 1000 mesh talc powder: 0.1 part; a compatilizer: 1 part; a slipping agent: 0.02 part; silicon dioxide: 0.1 part; antioxidant DPN: 0.02 part; UV-234: 0.02 part; anti-aging agent: 0.01 part; carbodiimide monomer: 0.2 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 50 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicon dioxide, an antioxidant DPN, UV-234, an anti-aging agent and a carbodiimide monomer while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, discharging a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
Example 5
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 110 parts of (A); polylactic acid: 20 parts of (1); 15 μm calcium carbonate: 1 part; 1000 mesh talc powder: 1 part; a compatilizer: 2 parts of (1); a slipping agent: 0.3 part; diatomite: 0.4 part; antioxidant 1076: 0.5 part; UV-327: 0.3 part; anti-aging agent: 0.4 part; carbodiimide monomer: 0.3 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 50 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicon dioxide, an antioxidant DPN, UV-234, an anti-aging agent and a carbodiimide monomer while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, discharging a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
Example 6
A full-biodegradable mulching film for cigarettes comprises the following components in parts by weight:
poly (butylene adipate/terephthalate): 105 parts of (A); polylactic acid: 15 parts of (1); 15 μm calcium carbonate: 1 part; 1000 mesh talc powder: 0.5 part; a compatilizer: 2 parts of (1); a slipping agent: 0.3 part; silicone: 0.4 part; antioxidant 1076: 0.4 part; UV-327: 0.25 part; anti-aging agent: 0.4 part; toluene-2, 4-diisocyanate: 0.3 part.
A preparation method of a full-biodegradable mulching film for cigarettes comprises the following process flows of:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 50 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, silicone, an antioxidant 1076, UV-327, an anti-aging agent and toluene-2, 4-diisocyanate while stirring, and putting the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) adding a dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at the head of the blow molding machine, wherein the heating temperature is 180 ℃; filtering and removing impurities by a machine head, discharging a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, wherein the blowing-up ratio is 2.5; and (3) after traction cooling, the traction ratio (the ratio of the traction speed of the mulching film to the extrusion speed of the pipe ring) is 50, and then slitting and winding are carried out to obtain the full-biodegradable mulching film.
The mulching films produced in the examples 1 to 6 are subjected to performance tests, the test method refers to GB T35795-2017, and the test results are shown in the following table:
and (3) field test:
the mulching films produced in examples 1-6 were used in tobacco growing areas in Weining county, Guizhou province, tobacco seedlings were transplanted and then covered with the mulching films obtained in examples 1-6 under the same growing conditions, biodegradable mulching films were purchased through common commercial approaches to set control groups CK1 and CK2, and the water, fertilizer and soil conditions of the test groups were the same as those of the control groups. The mulching film breakage time and the tobacco leaf acre yield of examples 1 to 6 were measured, and the results were as follows:
tests show that the mulching film can be used for planting tobacco in high-altitude areas of Guizhou, the using time meets the growth period of the tobacco, the average breaking time of the mulching film is not less than 120 days, the breakage of the mulching film is less midway, the strong wind resistance and the temperature difference resistance are good, and the acre yield of the tobacco leaves is favorably improved. After the tobacco leaves are harvested, residual mulching films do not need to be recycled, soil turning is not affected, and manpower and material resources are saved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The full-biodegradable mulching film for the cigarettes is characterized by comprising the following raw materials in parts by mass:
poly (butylene adipate/terephthalate): 100-120 parts;
polylactic acid: 10-30 parts;
calcium carbonate: 0.1-3 parts;
talc powder: 0.1-2 parts;
a compatilizer: 1-5 parts;
a slipping agent: 0.01-0.5 part;
an opening agent: 0.1-1 part;
antioxidant: 0.01-1 part;
ultraviolet absorber: 0.01-0.5 part;
anti-aging agent: 0.01-0.5 part;
hydrolysis resistance agent: 0.1-1 part.
2. The full-biodegradable mulching film for cigarettes according to claim 1, wherein the raw materials of the mulching film comprise the following components in parts by weight:
poly (butylene adipate/terephthalate): 110 parts of (A);
polylactic acid: 20 parts of (1);
calcium carbonate: 1 part;
talc powder: 1 part;
a compatilizer: 2 parts of (1);
a slipping agent: 0.3 part;
an opening agent: 0.4 part;
antioxidant: 0.4 part;
ultraviolet absorber: 0.25 part;
anti-aging agent: 0.4 part;
hydrolysis resistance agent: 0.3 part.
3. The full-biodegradable mulching film for cigarettes according to claim 1, wherein the raw materials of the mulching film comprise the following components in parts by weight:
poly (butylene adipate/terephthalate): 105 parts of (A);
polylactic acid: 15 parts of (1);
calcium carbonate: 1 part;
talc powder: 0.5 part;
a compatilizer: 2 parts of (1);
a slipping agent: 0.3 part;
an opening agent: 0.4 part;
antioxidant: 0.4 part;
ultraviolet absorber: 0.25 part;
anti-aging agent: 0.4 part;
hydrolysis resistance agent: 0.3 part.
4. The full-biodegradable mulching film for cigarettes according to claim 1, is characterized in that: the particle size of the calcium carbonate is 10-28 μm; the particle size of the talcum powder is not less than 800 meshes.
5. The full-biodegradable mulching film for cigarettes according to claim 1, is characterized in that: the opening agent comprises one or more of diatomaceous earth, silica, and silicone.
6. The full-biodegradable mulching film for cigarettes according to claim 1, is characterized in that: the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076, antioxidant DPN, antioxidant TPN and antioxidant 264.
7. The full-biodegradable mulching film for cigarettes according to claim 1, is characterized in that: the ultraviolet absorbent is UV-326, UV-327, UV-328, UV-360 or UV-234. The full-biodegradable mulching film for cigarettes according to claim 1, is characterized in that: the hydrolysis resistant agent is one of carbodiimide monomers, toluene-2, 4-diisocyanate, diphenylmethane diisocyanate, 2-oxazoline compounds and aromatic polycarbodiimide.
8. The preparation method of the full-biodegradable mulching film for the cigarettes according to any one of claims 1 to 7, comprising the following process flow:
(1) drying the poly (butylene adipate/terephthalate) and the polylactic acid at 40-60 ℃ until the moisture content is lower than 300 ppm;
(2) putting the dried poly (butylene adipate/terephthalate) and polylactic acid into a stirrer for low-speed stirring; sequentially adding calcium carbonate, talcum powder, a compatilizer, a slipping agent, an opening agent, an antioxidant, an ultraviolet absorbent, an anti-aging agent and an anti-hydrolysis agent while stirring, and feeding the uniformly mixed materials into a feed inlet of an extruder;
(3) cooling the material extruded in the step (2), cutting into particles, drying the cut material, and obtaining a modified material, wherein the water content of the dried material is lower than 300 ppm;
(4) and adding the dried modified material into a feeding hole of a blow molding machine, heating the modified material to a molten state at a head of the blow molding machine, filtering and removing impurities by the head, extruding a cylindrical thin pipe from a die head die orifice, blowing compressed air into the thin pipe by an air ring, and cutting and winding after traction cooling to obtain the fully biodegradable mulching film.
9. The preparation method of the full-biodegradable mulching film for the cigarettes according to claim 8, wherein the preparation method comprises the following steps: the extrusion temperature of the blow molding machine in the step (4) is 140-190 ℃.
10. The preparation method of the full-biodegradable mulching film for the cigarettes according to claim 8, wherein the preparation method comprises the following steps: the blow molding ratio in the production process is not less than 2.5; the traction ratio is 30-120 times.
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| CN114806109A (en) * | 2022-05-31 | 2022-07-29 | 江林（贵州）高科发展股份有限公司 | Biodegradable material, application thereof, fully-degradable vinasse composite material and biodegradable mulching film |
| CN115521588A (en) * | 2022-09-30 | 2022-12-27 | 新疆蓝山屯河高端新材料工程技术研究中心有限公司 | Full-biodegradable film, preparation method thereof and application thereof in mulching film |
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| CN115521588A (en) * | 2022-09-30 | 2022-12-27 | 新疆蓝山屯河高端新材料工程技术研究中心有限公司 | Full-biodegradable film, preparation method thereof and application thereof in mulching film |
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