CN111518375B - Biological cooling and heating forming cup and preparation method thereof - Google Patents
Biological cooling and heating forming cup and preparation method thereof Download PDFInfo
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- CN111518375B CN111518375B CN202010526270.1A CN202010526270A CN111518375B CN 111518375 B CN111518375 B CN 111518375B CN 202010526270 A CN202010526270 A CN 202010526270A CN 111518375 B CN111518375 B CN 111518375B
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- 238000001816 cooling Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 title claims description 20
- 238000010227 cup method (microbiological evaluation) Methods 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims description 24
- 229920000742 Cotton Polymers 0.000 claims description 23
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 13
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 8
- 239000004626 polylactic acid Substances 0.000 claims description 8
- -1 polypropylene carbonate Polymers 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 238000003856 thermoforming Methods 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920000379 polypropylene carbonate Polymers 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 9
- 239000000945 filler Substances 0.000 description 3
- 150000002596 lactones Chemical class 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/22—Drinking vessels or saucers used for table service
- A47G19/2205—Drinking glasses or vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
-
- 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
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
-
- 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
-
- 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
Abstract
The invention relates to a biological heat-reducing forming cup which comprises the following components in parts by weight:
Description
Technical Field
The invention relates to the technical field of biodegradable materials, in particular to a biological heat-reducing forming cup and a preparation method thereof.
Background
In daily life, a large number of disposable plastic tableware, such as thin-wall plastic cups, are used in the catering market, and the wall thickness of a common thin-wall plastic cup is usually within 0.4 mm. The traditional plastic cup can not be degraded quickly after being discarded or buried, and can damage the ocean and the living environment. For this country, the plastic-limiting reams are also put out in succession, even the plastic-forbidden reams are forbidden to limit the production and the use of the disposable plastic products, but the complete prohibition of the use of the disposable plastic products, such as plastic cups, brings great inconvenience to the lives of people.
To solve the problem of contamination of disposable plastic tableware, some hemp or wood fiber synthetic tableware products have appeared on the market. These products are all molded by powder fiber to obtain tableware with thick wall, but cannot obtain thermoformed cups with thin wall. However, most of the conventional disposable cups are produced by a thermoforming process, and the cups have the defects of thin wall thickness and poor rigidity, so that the liquid contained in the cups overflows due to the fact that the cup walls are deformed when the cups are held, the use is inconvenient, the wall thickness is increased, too many materials are wasted, and the product forming is difficult.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a biological cooling heat forming cup which is easy to thermally form and process a thin-wall cup, has high strength and can be biologically degraded.
In order to achieve the purpose, the biological heat-reducing forming cup comprises the following components in parts by weight:
further, the elastic modulus of the polylactic acid is 2000MPa to 3000 MPa.
Further, the molecular weight of the poly (alkene carbonate) lactone is 80000-100000.
Furthermore, the cotton fiber is fine cotton wool, the fiber length of the cotton fiber is 20 mm-30 mm, and the diameter of the cotton fiber is 15 μm-20 μm.
Furthermore, the filler powder is diatom powder, and the particle size of the filler powder is 200-250 meshes.
Further, as the coupling agent, a liquid silane coupling agent is used.
Further, maleic anhydride is used as the compatibilizer.
The invention also provides a preparation method of the biological heat-reducing forming cup, which comprises the following steps:
s1: treating cotton fibers, namely putting filler powder and the cotton fibers into a container, adding a coupling agent, stirring uniformly, adding into a high-speed mixer, adding paraffin, heating to 60-75 ℃, and mixing for 6-9 min at the rotating speed of 30-50 r/min to prepare a pretreatment mixture;
s2: processing a polymer, namely adding polylactic acid and poly (alkene carbonate) lactone into a high-speed mixer, mixing at 200-250 r/min, adding maleic anhydride after the rotation starts, adding the pretreated mixture, and stirring and mixing for 6-10 min to obtain a material mixture;
s3: extruding a sheet, namely adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 190-200 ℃, the die head temperature is 200-210 ℃, and the vacuum pressure is-0.08 MPa-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: thermoforming, adding the sheet-shaped product, forming on thermoforming cup forming equipment, wherein the heating temperature is 190-210 ℃, the forming air pressure is 0.6-0.7 MPa, and heating, air pressure forming and stamping to obtain the finished product of the biological heat-reducing formed cup.
The biological heat-reducing forming cup adopts the cotton fibers with soft texture and slender fibers, the cotton fibers are easy to deform such as bending and stretching along with the thermal forming of the thin-wall cup, the rapid thermal forming of the thin-wall cup is facilitated, and meanwhile, the cotton fibers can be naturally interwoven into a net shape, so that the elasticity and the anti-cracking performance of the cup body are enhanced, the strength of the cup body is improved, and the problem that the thin-wall cup is difficult to use due to the fact that the wall of the cup is too soft is solved. The invention can effectively improve the problem of thin and soft wall of the cup, improves the practicability of the cup, has natural degradation capability, can replace a plastic cup, and has positive significance to the green environmental protection industry.
Detailed Description
The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention.
Example 1: a biological cooling heat forming cup comprises the following components:
the preparation steps are as follows:
s1: putting 1kg of diatom powder and 1kg of cotton fiber into a container, adding 0.1kg of silane coupling agent, stirring uniformly, adding into a high-speed mixer, adding 0.1kg of paraffin, heating to 60 ℃, and continuously stirring and mixing for 15min at the rotating speed of 30r/min to obtain a pretreatment mixture;
s2: adding 75kg of polylactic acid and 22kg of poly (alkene carbonate) into a high-speed mixer, mixing at 200r/min, adding 0.8kg of maleic anhydride after the rotation is started, adding the pretreated mixture, and stirring and mixing for 6min to obtain a material mixture;
s3: adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 190 ℃, the die head temperature is 200 ℃, and the vacuum pressure is-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: adding the sheet-shaped product, forming on a thermal forming cup forming device at the heating temperature of 190 ℃ and the forming air pressure of 0.7MPa, and heating, forming under air pressure and stamping to obtain the finished product, namely the biological heat-reducing forming cup.
Example 2: a biological cooling heat forming cup comprises the following components:
the preparation steps are as follows:
s1: putting 4kg of diatom powder and 4kg of cotton fiber into a container, adding 0.4kg of silane coupling agent, stirring uniformly, adding into a high-speed mixer, adding 0.4kg of paraffin, heating to 65 ℃, and continuously stirring and mixing for 16min at the rotating speed of 35r/min to obtain a pretreatment mixture;
s2: adding 63.5kg of polylactic acid and 25kg of poly (alkene carbonate) into a high-speed mixer, mixing at 200r/min, adding 0.9kg of maleic anhydride after the rotation is started, adding the pretreated mixture, and stirring and mixing for 6min to obtain a material mixture;
s3: adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 195 ℃, the die head temperature is 205 ℃, and the vacuum pressure is-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: adding the sheet-shaped product, forming on a thermal forming cup forming device at the heating temperature of 195 ℃ and the forming air pressure of 0.65MPa, and heating, forming under air pressure and stamping to obtain the finished product, namely the biological heat-reducing forming cup.
Example 3: a biological cooling heat forming cup comprises the following components:
the preparation steps are as follows:
s1: putting 7kg of diatom powder and 7kg of cotton fiber into a container, adding 0.7kg of silane coupling agent, stirring uniformly, adding into a high-speed mixer, adding 0.7kg of paraffin, heating to 70 ℃, and continuously stirring and mixing for 18min at the rotating speed of 45r/min to obtain a pretreatment mixture;
s2: adding 74.5kg of polylactic acid and 10kg of poly (alkene carbonate) lactone into a high-speed mixer, mixing at 200r/min, adding 0.1kg of maleic anhydride after the rotation is started, then adding the pretreatment mixture, and stirring and mixing for 6min to obtain a material mixture;
s3: adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 195 ℃, the die head temperature is 205 ℃, and the vacuum pressure is-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: adding the sheet-shaped product, forming on a thermal forming cup forming device at the heating temperature of 195 ℃ and the forming air pressure of 0.65MPa, and heating, forming under air pressure and stamping to obtain the finished product, namely the biological heat-reducing forming cup.
Example 4: a biological cooling heat forming cup comprises the following components:
the preparation steps are as follows:
s1: putting 10kg of diatom powder and 10kg of cotton fiber into a container, adding 1kg of silane coupling agent, stirring uniformly, adding into a high-speed mixer, adding 1kg of paraffin, heating to 75 ℃, and continuously stirring and mixing for 20min at the rotating speed of 50r/min to obtain a pretreatment mixture;
s2: adding 55kg of polylactic acid and 22.5kg of poly (alkene carbonate) into a high-speed mixer, mixing at 200r/min, adding 0.5kg of maleic anhydride after the rotation is started, adding the pretreated mixture, and stirring and mixing for 6min to obtain a material mixture;
s3: adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 200 ℃, the die head temperature is 210 ℃, and the vacuum pressure is-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: adding the sheet-shaped product, forming on a thermal forming cup forming device at the heating temperature of 200 ℃ and the forming air pressure of 0.6MPa, and heating, forming under air pressure and stamping to obtain the finished product, namely the biological heat-reducing forming cup.
Comparative example 1: the difference from example 2 is that cotton fiber is replaced by equal amount of hemp fiber, and diatom powder is replaced by equal amount of wood flour, and the stirring temperature in step S1 is 70 deg.C, the rotation speed is 45r/min, and the stirring time is 18 min.
Comparative example 2: the difference from example 1 is that the same amount of polyalkylene carbonate was used instead of cotton fiber, diatom powder, paraffin and silane coupling agent.
The test method comprises the following steps:
1. and (3) molding quality: visually observing, and checking the forming condition of the cup body to determine whether a crack exists;
2. cup wall deformation: the amount of wall deformation was checked by applying 10 grams of force to a 0.2mm thick cup wall.
The test results are shown in Table 1.
Table 1: test results
As can be seen from Table 1, the biodegradable forming cup of the present invention can effectively enhance the strength of the thin wall surface, the surface strength of the biodegradable forming cup is positively correlated with the content of the cotton fiber, and the surface strength of the biodegradable forming cup can be adjusted by adjusting the content of the cotton fiber. Meanwhile, the invention can effectively improve the hot forming quality of the thin-wall thermoplastic product, avoid the product from brittle fracture and effectively improve the toughness of the cup body.
The above detailed description merely describes preferred embodiments of the present invention and does not limit the scope of the invention. Without departing from the spirit and scope of the present invention, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims.
Claims (8)
1. The biological cooling and heat-clearing forming cup is characterized by comprising the following components in parts by weight:
2. the biodegradable heat-reducing forming cup according to claim 1, wherein the polylactic acid has an elastic modulus of 3000MPa to 4000 MPa.
3. The biodegradable heat-clearing forming cup according to claim 1, wherein the molecular weight of the polypropylene carbonate is 80000 to 100000.
4. The biological heat-reducing forming cup according to claim 1, wherein the cotton fiber is fine cotton wool, the fiber length of the cotton fiber is 20mm to 30mm, and the diameter of the cotton fiber is 15 μm to 20 μm.
5. The biological heat-reducing forming cup as claimed in claim 1, wherein the particle size of the diatom powder is 200-250 mesh.
6. The heat-reducing bio-forming cup according to claim 1, wherein the coupling agent is a liquid silane coupling agent.
7. The bio-cooling heat forming cup according to claim 1, wherein the compatibilizer is maleic anhydride.
8. The preparation method of the biological heat-reducing forming cup is characterized by comprising the following steps:
s1: treating cotton fibers, namely putting diatom powder and the cotton fibers into a container, adding a coupling agent, stirring uniformly, adding into a high-speed mixer, adding paraffin, heating to 60-75 ℃, and mixing for 6-9 min at the rotating speed of 30-50 r/min to prepare a pretreatment mixture;
s2: processing a polymer, namely adding polylactic acid and polypropylene carbonate into a high-speed mixer, mixing at 200-250 r/min, adding maleic anhydride after the rotation starts, adding the pretreated mixture, and stirring and mixing for 6-10 min to obtain a material mixture;
s3: extruding a sheet, namely adding the material mixture into a double-screw sheet extrusion device, wherein the device temperature is 190-200 ℃, the die head temperature is 200-210 ℃, and the vacuum pressure is-0.08 MPa-0.04 MPa, and obtaining a sheet product after extrusion, sheet die forming, three-rod extrusion, cooling and traction;
s4: thermoforming, adding the sheet-shaped product, forming on thermoforming cup forming equipment, wherein the heating temperature is 190-210 ℃, the forming air pressure is 0.6-0.7 MPa, and heating, air pressure forming and stamping to obtain the finished product of the biological heat-reducing formed cup.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010526270.1A CN111518375B (en) | 2020-06-09 | 2020-06-09 | Biological cooling and heating forming cup and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010526270.1A CN111518375B (en) | 2020-06-09 | 2020-06-09 | Biological cooling and heating forming cup and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111518375A CN111518375A (en) | 2020-08-11 |
| CN111518375B true CN111518375B (en) | 2022-04-05 |
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| CN113462137A (en) * | 2021-08-11 | 2021-10-01 | 中船重工鹏力（南京）塑造科技有限公司 | Formula and preparation method of degradable paper cup |
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| US20070092745A1 (en) * | 2005-10-24 | 2007-04-26 | Li Nie | Thermotolerant starch-polyester composites and methods of making same |
| CN103102660B (en) * | 2011-11-11 | 2015-11-25 | 上海杰事杰新材料(集团)股份有限公司 | A kind of Fibrilia/polylactic acid biodegradable composite material and preparation method thereof |
| CN104212135A (en) * | 2013-06-03 | 2014-12-17 | 东丽先端材料研究开发（中国）有限公司 | Biodegradable polylactic acid resin composition and product |
| CN103467948B (en) * | 2013-09-04 | 2016-08-31 | 上海悦萌环保科技有限公司 | Cotton fiber and the degradation plastic of polylactic acid blend |
| CN105462200A (en) * | 2015-12-16 | 2016-04-06 | 无锡吉进环保科技有限公司 | Method for preparing environment-friendly plastic |
| CN109618739A (en) * | 2018-12-14 | 2019-04-16 | 河南青源天仁生物技术有限公司 | Contain biodegradable seedlings nursing plate of micro- fertilizer and preparation method thereof suitable for machinery transplanting |
| EP3825350A1 (en) * | 2019-11-21 | 2021-05-26 | SHPP Global Technologies B.V. | Composites with reduced weight and improved interfacial strength |
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