CN114434910B - Degradable plastic woven cloth and preparation method thereof - Google Patents
Degradable plastic woven cloth and preparation method thereof Download PDFInfo
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- CN114434910B CN114434910B CN202210356219.XA CN202210356219A CN114434910B CN 114434910 B CN114434910 B CN 114434910B CN 202210356219 A CN202210356219 A CN 202210356219A CN 114434910 B CN114434910 B CN 114434910B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/026—Knitted fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
Abstract
The invention relates to the technical field of plastic woven cloth, and provides degradable plastic woven cloth and a preparation method thereof, wherein the degradable plastic woven cloth comprises non-woven fabric, woven core cloth and an outer layer membrane which are sequentially bonded, and the woven core cloth comprises the following components in parts by weight: 20-40 parts of homo-polypropylene, 10-30 parts of high-pressure polyethylene, 12-15 parts of color master batch and 5-15 parts of anti-aging master batch; the non-woven fabric comprises the following components in parts by weight: 10-20 parts of homo-polypropylene, 5-10 parts of high-pressure polyethylene, 4-10 parts of color master batch, 4-10 parts of anti-aging master batch, 5-20 parts of polylactic acid, 10-15 parts of poly (butylene adipate)/terephthalate, 5-20 parts of modified starch, 4-10 parts of cage-type polysilsesquioxane, 5-8 parts of ethylene-n-butyl acrylate and 5-8 parts of nucleating agent. Through the technical scheme, the problem of low tensile strength of the plastic woven cloth caused by poor compatibility between PLA and PBAT in the related technology is solved.
Description
Technical Field
The invention relates to the technical field of plastic woven cloth, in particular to degradable plastic woven cloth and a preparation method thereof.
Background
The plastic woven bag is made into a polypropylene bag and a polyethylene bag according to main materials; the bag is divided into a bottom sewing bag and a side sewing bag according to sewing methods. The packaging material is widely applied to the articles such as fertilizers, chemical products and the like at present. The packaging material is widely applied to the articles such as fertilizers, chemical products and the like at present. After being used, the plastic packaging materials are usually discarded at will, and the non-degradability of waste plastics causes white pollution. Therefore, how to solve the problem of waste plastics has become a main research direction.
Some recyclable products such as non-woven fabrics can only replace common plastics in part of fields. Meanwhile, degradable materials are gradually being transferred from laboratories to practical production, such as polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT), but PLA has a tensile strength lower than that of polypropylene or polyethylene under a repeatedly stretched environment; PBAT is a copolymer of polybutylene adipate (PBA) and polybutylene terephthalate (PBT), and PBAT has good flexibility but low strength and modulus, and as a raw material of woven cloth, it is also difficult to meet the use requirements.
Currently, existing enterprises have been working in cooperation with research institutes to develop the common application of PLA and PBAT to degradable plastic woven fabrics. However, in practical studies, it was found that PLA and PBAT have poor compatibility therebetween due to their respective physical and chemical properties, and such poor compatibility is one of the key factors directly contributing to low tensile strength of products. Therefore, there is a need to solve the problem of poor compatibility of PLA and PBAT in plastic woven cloth.
Disclosure of Invention
The invention provides degradable plastic woven cloth and a preparation method thereof, which solve the problem of low tensile strength of the plastic woven cloth caused by poor compatibility between PLA and PBAT in the related technology.
The technical scheme of the invention is as follows: the degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer film which are bonded in sequence, wherein the woven core cloth comprises the following components in parts by weight: 20-40 parts of homo-polypropylene, 10-30 parts of high-pressure polyethylene, 12-15 parts of color master batches and 5-15 parts of anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10-20 parts of homo-polypropylene, 5-10 parts of high-pressure polyethylene, 4-10 parts of color master batch, 4-10 parts of anti-aging master batch, 5-20 parts of polylactic acid, 10-15 parts of poly (butylene adipate)/terephthalate, 5-20 parts of modified starch, 4-10 parts of cage-type polysilsesquioxane, 5-8 parts of ethylene-n-butyl acrylate and 5-8 parts of nucleating agent.
As a further technical scheme, the nucleating agent is selected from one or more of talcum powder, calcium carbonate, silicon dioxide, alum, titanium dioxide and calcium oxide.
As a further technical scheme, the color master batch is selected from one or two of PE color master batch and PP color master batch.
As a further technical scheme, the anti-aging master batch is selected from one or two of PE (polyethylene) anti-aging master batch and PP (polypropylene) anti-aging master batch.
According to a further technical scheme, the outer layer film is one or two of PE film and PP film.
The invention also provides a preparation method applied to the degradable plastic woven cloth, which comprises the following steps: step S10, mixing materials: stirring and mixing the raw materials uniformly according to a certain proportion;
step S20, debugging: gradually increasing the temperature of the cylinder, setting the temperature at 200-280 ℃, melting all the raw materials, setting the temperature of a die head at 280 ℃, extruding from the die head to form an extruded sheet, and cooling the extruded sheet by a cooling water tank at 40 ℃;
step S30, splitting: selecting a cutter pad to cut the extruded sheet into blank filaments;
step S40, stretching: keeping the temperature of the oven between 150 ℃ and 160 ℃, and longitudinally stretching the blank wire to obtain a primary flat wire;
step S50, shaping: heating the primary flat filament, keeping the temperature of a heat setting roller at 80 ℃ for 8s, and performing cold setting by a cold water roller to obtain a set flat filament;
step S60, knitting: weaving the obtained shaped flat filaments into woven core cloth by a circular weaving machine;
step S70, preparing a nonwoven fabric: preparing the raw materials of the non-woven fabric layer into non-woven fabric according to a ratio by adopting a melt-blowing process;
Step S80, compounding: and compounding the non-woven fabric, the woven core fabric and the outer layer film.
As a further technical solution, in the step S80, an outer layer film is laid on a woven core fabric by using a tape casting laminator.
The beneficial effects of the invention are as follows:
1. the plastic woven cloth provided by the invention contains the non-woven fabric with degradable components, wherein polylactic acid, poly adipic acid/butylene terephthalate and modified starch are all easily degradable components, the percentage of the easily degradable components is higher than that of homo-polypropylene and high-pressure polyethylene, the easily degradable components are degraded in a short time in the degradation process, and the homo-polypropylene and the high-pressure polyethylene are completely exposed after the degradation is finished, so that the degradation speed of the latter is accelerated.
2. The cage-type polysilsesquioxane and the ethylene-n-butyl acrylate in a certain proportion are contained in the plastic woven cloth, the polylactic acid and the poly adipic acid/butylene terephthalate have poor compatibility when being mixed, so that the tensile strength of the plastic woven cloth is reduced, and the compatibility of the polylactic acid and the poly adipic acid/butylene terephthalate can be improved, the compatibility of all raw materials in the plastic woven cloth is improved, and the tensile strength of the plastic woven cloth is obviously improved.
3. The plastic woven cloth provided by the invention contains modified starch, and the modified starch has excellent fluidity, so that the components of the non-woven cloth can be more easily mixed in the mixing stage, the compatibility of polylactic acid and poly adipic acid/butylene terephthalate can be further improved in the synergistic compatibility of the auxiliary cage-type polysilsesquioxane and the ethylene-n-butyl acrylate, and the tensile strength of the plastic woven cloth can be further improved finally.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
Example 1
The degradable plastic woven cloth provided by the embodiment comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 22 parts of homo-polypropylene, 12 parts of high-pressure polyethylene, 12 parts of PE color master batches and 5 parts of PE anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PE color master batches, 4 parts of PE anti-aging master batches, 5 parts of polylactic acid, 10 parts of poly (adipic acid)/butylene terephthalate, 5 parts of modified starch, 4 parts of cage polysilsesquioxane, 5 parts of ethylene-n-butyl acrylate and 5 parts of talcum powder.
The preparation method of the modified starch comprises the following steps: adding water into native starch, stirring for 40-60min to obtain starch slurry with concentration of 40%; acidifying with 1.5% sulfuric acid at 40 deg.C; centrifuging for 20-40min to dewater and recover acid solution; adding water for washing; centrifuging for 5-10min, and dehydrating to obtain acid-containing modified starch; adding sodium carbonate for neutralization; centrifuging and then washing with water again; drying after centrifugal dehydration again, wherein the drying temperature is 35-55 ℃; baking until the water content is less than or equal to 12 percent to prepare the modified starch.
The preparation method of the degradable plastic woven cloth comprises the following steps:
step S10, mixing materials: stirring and mixing the raw materials uniformly according to a certain proportion;
step S20, debugging: gradually increasing the temperature of the cylinder, setting the temperature at 200-280 ℃, melting all the raw materials, setting the temperature of a die head at 280 ℃, extruding from the die head to form an extruded sheet, and cooling the extruded sheet by a cooling water tank at 40 ℃;
step S30, splitting: selecting a cutter pad to cut the extruded sheet into blank filaments;
step S40, stretching: keeping the temperature of the oven between 150 ℃ and 160 ℃, and longitudinally stretching the blank wire to obtain a primary flat wire;
Step S50, shaping: heating the primary flat filament, keeping the temperature of a heat setting roller at 80 ℃ for 8s, and performing cold setting through a cold water roller to obtain a set flat filament;
step S60, knitting: weaving the obtained shaped flat filaments into woven core cloth by a circular weaving machine;
step S70, preparing a nonwoven fabric: preparing the raw materials of the non-woven fabric layer into non-woven fabric according to a mixture ratio by adopting a melt-blowing process;
step S80, compounding: and compounding the non-woven fabric, the woven core fabric and the outer layer film.
The melt-blowing process of the non-woven fabric comprises the following steps: feeding various raw materials into an extruder in a certain proportion; melting and extruding the raw materials into fibers by an extruder at the temperature of 260 ℃ and 280 ℃; cooling the fiber by a 40 ℃ cold area water tank; weaving the fibers into a net, and then reinforcing to finally form the non-woven fabric.
Example 2
The degradable plastic woven cloth provided by the embodiment comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 20 parts of homo-polypropylene, 10 parts of high-pressure polyethylene, 12 parts of PP color master batch and 5 parts of PP anti-aging master batch; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PP color master batch, 4 parts of PP anti-aging master batch, 15 parts of polylactic acid, 15 parts of poly (butylene adipate)/terephthalate, 15 parts of modified starch, 6 parts of cage polysilsesquioxane, 6 parts of ethylene-n-butyl acrylate and 6 parts of alum.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Example 3
The degradable plastic woven cloth provided by the embodiment comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 40 parts of homo-polypropylene, 30 parts of high-pressure polyethylene, 15 parts of PP color master batch and 15 parts of PP anti-aging master batch; the non-woven fabric comprises the following components in parts by weight: 20 parts of homo-polypropylene, 10 parts of high-pressure polyethylene, 10 parts of PP color master batch, 10 parts of PP anti-aging master batch, 20 parts of polylactic acid, 15 parts of poly (butylene adipate)/terephthalate, 20 parts of modified starch, 10 parts of cage type polysilsesquioxane, 8 parts of ethylene-n-butyl acrylate and 8 parts of alum.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Example 4
The degradable plastic woven cloth provided by the embodiment comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 15 parts of homo-polypropylene, 20 parts of high-pressure polyethylene, 12 parts of PP color master batches and 12 parts of PP anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 12 parts of homo-polypropylene, 7 parts of high-pressure polyethylene, 8 parts of PP color master batch, 8 parts of PP anti-aging master batch, 16 parts of polylactic acid, 13 parts of poly (butylene adipate)/terephthalate, 16 parts of modified starch, 6 parts of cage type polysilsesquioxane, 6 parts of ethylene-n-butyl acrylate and 6 parts of titanium dioxide.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Comparative example 1
The degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are bonded in sequence, wherein the woven core cloth comprises the following components in parts by weight: 22 parts of homo-polypropylene, 12 parts of high-pressure polyethylene, 12 parts of PE color master batches and 5 parts of PE anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PE color master batches, 4 parts of PE anti-aging master batches, 5 parts of polylactic acid, 10 parts of poly (adipic acid)/polybutylene terephthalate, 5 parts of modified starch and 5 parts of talcum powder.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Comparative example 2
The degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 22 parts of homo-polypropylene, 12 parts of high-pressure polyethylene, 12 parts of PE color master batches and 5 parts of PE anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PE color master batches, 4 parts of PE anti-aging master batches, 5 parts of polylactic acid, 10 parts of poly (adipic acid)/polybutylene terephthalate, 5 parts of modified starch, 9 parts of ethylene-n-butyl acrylate and 5 parts of talcum powder.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Comparative example 3
The degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are bonded in sequence, wherein the woven core cloth comprises the following components in parts by weight: 22 parts of homo-polypropylene, 12 parts of high-pressure polyethylene, 12 parts of PE color master batches and 5 parts of PE anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PE color master batches, 4 parts of PE anti-aging master batches, 5 parts of polylactic acid, 10 parts of poly (adipic acid)/polybutylene terephthalate, 5 parts of modified starch, 9 parts of cage-type polysilsesquioxane and 5 parts of talcum powder.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
Comparative example 4
The degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer membrane which are sequentially bonded, wherein the woven core cloth comprises the following components in parts by weight: 22 parts of homo-polypropylene, 12 parts of high-pressure polyethylene, 12 parts of PE color master batches and 5 parts of PE anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10 parts of homo-polypropylene, 5 parts of high-pressure polyethylene, 4 parts of PE color master batches, 4 parts of PE anti-aging master batches, 5 parts of polylactic acid, 10 parts of poly (adipic acid)/butylene terephthalate, 5 parts of starch, 4 parts of cage polysilsesquioxane, 5 parts of ethylene-n-butyl acrylate and 5 parts of talcum powder.
The preparation method of the degradable plastic woven cloth is the same as that of the embodiment 1.
The tensile strength of the woven plastic fabrics of examples 1 to 7 and comparative examples 1 to 4 was measured according to the method specified in the national standard of GB/T1040, and the results are shown in Table 1:
TABLE 1
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Tensile Strength sigma (MPa) | 33.82 | 33.67 | 33.96 | 33.77 | 25.63 | 31.95 | 27.44 | 31.93 |
From table 1, the following conclusions can be drawn:
(1) comparing example 1 with comparative example 1, it can be seen that the tensile strength sigma of the woven cloth is remarkably improved after the cage-type polysilsesquioxane and the ethylene-n-butyl acrylate are added for synergistic compatibility;
(2) comparing comparative example 1 and comparative example 2, it can be seen that the tensile strength of the woven fabric is obviously increased when only ethylene-n-butyl acrylate is used as a compatibilizer, but comparing example 1 and comparative example 2, it can be seen that the tensile strength of the woven fabric is further improved after cage-type polysilsesquioxane is added;
(3) comparing comparative example 1 and comparative example 3, it can be seen that the tensile strength of the woven fabric is improved to a certain extent only by adding the cage-type polysilsesquioxane, but comparing example 1 and comparative example 3, it can be seen that the tensile strength of the woven fabric is further improved after adding the cage-type polysilsesquioxane;
(4) Comparing example 1 with comparative example 4, it can be seen that the compounded cage-type polysilsesquioxane and ethylene-n-butyl acrylate can achieve a better compatibilization effect on the premise of having the modified starch, so that the components in the non-woven fabric are fused more sufficiently, and the overall tensile strength is better.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The degradable plastic woven cloth comprises a non-woven fabric, a woven core cloth and an outer layer film which are bonded in sequence, and is characterized in that the woven core cloth comprises the following components in parts by weight: 20-40 parts of homo-polypropylene, 10-30 parts of high-pressure polyethylene, 12-15 parts of color master batches and 5-15 parts of anti-aging master batches; the non-woven fabric comprises the following components in parts by weight: 10-20 parts of homo-polypropylene, 5-10 parts of high-pressure polyethylene, 4-10 parts of color master batches, 4-10 parts of anti-aging master batches, 5-20 parts of polylactic acid, 10-15 parts of poly (butylene adipate)/terephthalate, 5-20 parts of modified starch, 4-10 parts of cage polysilsesquioxane, 5-8 parts of ethylene-n-butyl acrylate and 5-8 parts of nucleating agents;
The preparation method of the modified starch comprises the following steps: adding water into native starch, stirring for 40-60min to obtain starch slurry with concentration of 40%; acidifying with 1.5% sulfuric acid at 40 deg.C; centrifuging for 20-40min to dewater and recovering acid solution; adding water for washing; centrifuging for 5-10min, and dehydrating to obtain acid-containing modified starch; adding sodium carbonate for neutralization; centrifuging and then washing with water again; drying after centrifugal dehydration again, wherein the drying temperature is 35-55 ℃; baking until the water content is less than or equal to 12 percent to prepare the modified starch.
2. The woven fabric of claim 1, wherein the nucleating agent is selected from one or more of talc, calcium carbonate, silica, alum, titanium dioxide, and calcium oxide.
3. The woven fabric of claim 1, wherein the color masterbatch is one or two of a PE color masterbatch and a PP color masterbatch.
4. The woven fabric of claim 1, wherein the anti-aging masterbatch is selected from one or two of PE anti-aging masterbatch and PP anti-aging masterbatch.
5. The woven fabric of claim 1, wherein the outer film is one or two selected from a PE film and a PP film.
6. The preparation method of the degradable plastic woven cloth applied to the claim 1 is characterized by comprising the following steps of:
s10, mixing materials: stirring and mixing the raw materials uniformly according to a certain proportion;
s20, debugging: gradually increasing the temperature of the cylinder, setting the temperature at 200-280 ℃, respectively melting the raw materials, setting the temperature of a die head at 280 ℃, extruding from the die head to form an extruded sheet, and cooling the extruded sheet by a cooling water tank at 40 ℃;
s30, cutting wires: selecting a cutter pad to cut the extruded sheet into blank filaments;
s40, stretching: keeping the temperature of the oven between 150 ℃ and 160 ℃, and longitudinally stretching the blank wire to obtain a primary flat wire;
s50, shaping: heating the primary flat filament, keeping the temperature of a heat setting roller at 80 ℃ for 8s, and performing cold setting through a cold water roller to obtain a set flat filament;
s60, knitting: weaving the obtained shaped flat filaments into woven core cloth by a circular weaving machine;
s70, preparing non-woven fabric: preparing the raw materials of the non-woven fabric layer into non-woven fabric according to a ratio by adopting a melt-blowing process;
s80, compounding: and compounding the non-woven fabric, the woven core fabric and the outer layer film.
7. The woven fabric of degradable plastics and the preparation method thereof according to claim 6, wherein in said step S80, a tape casting laminator is used to lay the outer layer film on the woven core fabric.
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