CN110126402A - A kind of degradative membrane of multilayer degradation - Google Patents
A kind of degradative membrane of multilayer degradation Download PDFInfo
- Publication number
- CN110126402A CN110126402A CN201910244054.5A CN201910244054A CN110126402A CN 110126402 A CN110126402 A CN 110126402A CN 201910244054 A CN201910244054 A CN 201910244054A CN 110126402 A CN110126402 A CN 110126402A
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- Prior art keywords
- film
- degradation
- degradable
- layer
- degradable film
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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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
-
- 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
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
-
- 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
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses the degradative membranes that a kind of degradative membrane more particularly to a kind of multilayer are degraded, and belong to degradation technique field.The invention includes being divided into multilayer degradable film from top to bottom, and isolation film is equipped between any two layers of degradable film, and the isolation film separate each layer degradable film can and degrade for every layer of degradable film to be isolated.Since oxygen, moisture has been isolated in setting separation layer in the invention, be directly entered it can not inside degradative membrane so that degradable film can only one layer connect one layer and degrade, without degrading simultaneously；After the degradable film degradation on surface layer, separation layer is acted on by water to be dissolved, and next layer of degradable film starts to degrade again；By the control of the degradable film number of plies, the degradation time of degradative membrane entirety can be controlled at -8 years 6 months.
Description
Technical field
The present invention relates to the degradative membranes that a kind of degradative membrane more particularly to a kind of multilayer are degraded, and belong to degradation technique field.
Background technique
The degradation of film be primarily referred to as being added in process of production a certain amount of additive (such as starch, modified starch or its
Its cellulose, photosensitizer, biodegradation agent etc.), in animals such as oxygen, water, ray, chemicals, polluter, mechanical force, insects
And under the effect of the environmental conditions such as microorganism, generating macromolecular chain fracture declines its stability, and gradually in the natural environment
Degradation.The main ratio by adjusting additive of the control of existing its degradation time of degradable film is controlled, for degradation
Proportion adjustment by additive of the time requirement in 3-6 months can preferably control its degradation time, when for degradation
Between require then to be difficult to carry out the accurate control of degradation time by adjusting ratio in 1 year, 2 years and longer film.
109369967 A of CN discloses a kind of degradable films, including following raw material: polyethylene, polylactic acid, corn form sediment
Powder, poly- naphthalene formaldehyde sulfonates, fatty alcohol polyoxyethylene ether ammonium sulfate, acrylate, water；103571175 A of CN discloses one kind
Degradable TPU mulch, by 40-80 parts of TPU particle, 0.05-2 parts of antioxidant, ultraviolet absorbing agent, 0.05-3 parts, calcium carbonate
0.5-50 parts, 0.5-20 parts of diatomite, 0-2 parts of calcium stearate, 0-1.8 parts of stearic acid and 0-0.5 parts of black color masterbatch compositions；More than
Although two kinds of films can be degradable, it can not achieve the purpose that degradation time is controllable.
CN 105104036B discloses a kind of TPU film and preparation method thereof that degradation time is controllable, including TPU film
Layer and the antibacterial oxidant layer being coated on outside TPU film；TPU film layer raw material includes the TPU for being grafted PLA, the TPU film layer
Isocyanate index < 1；The raw material of antibacterial oxidant layer includes quaternary phosphonium salt and/or quaternary ammonium salt.Pass through outermost quaternary phosphonium salt and/or season
Ammonium salt has antibacterial activity, and the positive charge of greater density can be generated when dissociating, makes electronegative bacterial adsorption on surface, passes through
The diffusion of cell wall makes its rupture, the release of bacterium content, bacterial death in conjunction with cytoplasma membrane；Difference can be set partly to decline
The quaternary phosphonium salt and/or quaternary ammonium salt of phase controls the time of its degradation, and after quaternary phosphonium salt and/or quaternary ammonium salt degradation, internal TPU is thin
Film layer just starts to degrade.By the way that the PLA of different molecular weight is added, and the percentage composition ratio of PLA Yu TPU melt are adjusted, controls TPU
The degradation time of film, to achieve the purpose that the controlled degradation time；Although can control degradation time, in actual use process
In, due to the complexity and variability of natural environment, the control of degradation time is difficult, weight is needed when use environment changes
Its proportion is newly adjusted, operation difficulty is big.
Thus, developing the degradable film that a kind of degradation time is easy to adjust, degradation time can control is industry institute
It needs.
Summary of the invention
In order to solve problem above, degradation can be layered the object of the present invention is to provide one kind, and by the control of the number of plies, from
And reach the degradative membrane of degradation time.
In order to achieve the goal above, the technical solution adopted by the present invention:
A kind of degradative membrane of multilayer degradation, the degradative membrane are divided into the degradable film of many levels from top to bottom, and
Isolation film is equipped between any two layers of degradable film, the isolation film keeps each layer degradation thin for every layer of degradable film to be isolated
Film can be separated and be degraded.
Preferably, any degradable film is single layer membrane structure, the degradable film with a thickness of 0.01mm-
0.05mm, water vapour permeability≤0.5g/ (m of degradable film2.24h)。。
Preferably, any degradable film is the polyethylene film with biodegrade or thermal oxidative degradation performance,
The degradation time of the polyethylene film is 3-9 months.
Preferably, any isolation film is single layer membrane structure, isolation film with a thickness of 0.01mm-0.05mm, every
OTR oxygen transmission rate≤1cm from film3/(m2.24h.0.1MPa)。
Preferably, any isolation film is made of water-solubility membrane, and the water solubility of the water-solubility membrane is to be impregnated
It is interior for 24 hours in 20-25 DEG C of water to be completely dissolved.
Beneficial effects of the present invention:
1, the present invention in separation layer use water-soluble material, make it possible to blocking oxygen penetrate into lower layer degradation it is thin
Film, to prevent the oxygenolysis of lower layer's degradable film；And using its hydrophily by upper layer degradable film penetrate into come steam
It absorbs, keeps the drying of lower layer's degradable film.
2, it be directly entered it can not inside degradative membrane since oxygen, moisture has been isolated in setting separation layer in the present invention, from
And make degradable film can only one layer connect one layer and degrade, without degrading simultaneously；When the degradable film on surface layer drops
Xie Hou, separation layer is acted on by water to be dissolved, and next layer of degradable film starts to degrade again；The control of the degradable film number of plies can be passed through
System controls the degradation time of degradative membrane entirety at -8 years 6 months.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Illustrate in figure: 1- degradable film；2- isolation film.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made into one with reference to the accompanying drawing
Step illustrates.In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment one
A kind of degradative membrane of multilayer degradation, the degradative membrane are divided into the degradable film 1 of many levels from top to bottom, and
Isolation film 2 is equipped between any two layers of degradable film 1, the isolation film 2 drops each layer for every layer of degradable film 1 to be isolated
Degrading film 1 can be separated and be degraded.
Preferably, any degradable film 1 is single layer membrane structure, degradable film 1 with a thickness of 0.01mm, degradation
The water vapour permeability of film 1≤0.5g/ (m2.24h)。
Preferably, any degradable film 1 is the polyethylene film with biodegrade or thermal oxidative degradation performance,
Degradation time 3 months.
Preferably, any isolation film 2 is single layer membrane structure, isolation film 2 with a thickness of 0.03mm, isolation film 2
OTR oxygen transmission rate≤1cm3/(m2.24h.0.1MPa)。
Preferably, any isolation film 2 is made of water-solubility membrane, and the water solubility of the water-solubility membrane is to be impregnated
It is interior for 24 hours in 20-25 DEG C of water to be completely dissolved.
Preferably, the number of plies of the degradable film 1 is 5 layers, and the number of plies of isolation film 2 is 4 layers.
Show that the time that the film of the present embodiment is all degraded is 12 by the use test result in natural soils
Month；Further, the degradation effect is film crushing into fritter.
Embodiment two
A kind of degradative membrane of multilayer degradation, the degradative membrane are divided into the degradable film 1 of many levels from top to bottom, and
Isolation film 2 is equipped between any two layers of degradable film 1, the isolation film 2 drops each layer for every layer of degradable film 1 to be isolated
Degrading film 1 can be separated and be degraded.
Preferably, any degradable film 1 is single layer membrane structure, degradable film 1 with a thickness of 0.05mm, degradation
The water vapour permeability of film 1≤0.5g/ (m2.24h)。。
Preferably, any degradable film 1 is the polyethylene film with biodegrade or thermal oxidative degradation performance,
Degradation time 9 months.
Preferably, any isolation film 2 is single layer membrane structure, isolation film 2 with a thickness of 0.01mm, isolation film 2
OTR oxygen transmission rate≤1cm3/(m2.24h.0.1MPa)。
Preferably, any isolation film 2 is made of water-solubility membrane, and the water solubility of the water-solubility membrane is to be immersed in
It is interior for 24 hours in 20-25 DEG C of water to be completely dissolved.
Preferably, the number of plies of the degradable film 1 is 5 layers, and the number of plies of isolation film 2 is 4 layers.
Show that the time that the film of the present embodiment is all degraded is 32 by the use test result in natural soils
Month；Further, described to be degraded to film crushing into fritter.
Embodiment three
A kind of degradative membrane of multilayer degradation, the degradative membrane are divided into the degradable film 1 of many levels from top to bottom, and
Isolation film 2 is equipped between any two layers of degradable film 1, the isolation film 2 drops each layer for every layer of degradable film 1 to be isolated
Degrading film 1 can be separated and be degraded.
Preferably, any degradable film 1 is single layer membrane structure, degradable film 1 with a thickness of 0.03mm, degradation
The water vapour permeability of film 1≤0.5g/ (m2.24h)。
Preferably, any degradable film 1 is the polyethylene film with biodegrade or thermal oxidative degradation performance,
Degradation time 6 months.
Preferably, any isolation film 2 is single layer membrane structure, isolation film 2 with a thickness of 0.05mm, isolation film 2
OTR oxygen transmission rate≤1cm3/(m2.24h.0.1MPa)。
Preferably, any isolation film 2 is made of water-solubility membrane, and the water solubility of the water-solubility membrane is to be impregnated
It is interior for 24 hours in 20-25 DEG C of water to be completely dissolved.
Preferably, the number of plies of the degradable film 1 is 5 layers, and the number of plies of isolation film 2 is 4 layers.
Show that the time that the film of the present embodiment is all degraded is 27 by the use test result in natural soils
Month；Further, described to be degraded to film crushing into fritter.
It is worth noting that, multilayer degradable film 1, isolation film 2 carry out being combined degradation by way of coating bonding
Film.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of degradative membrane of multilayer degradation, it is characterised in that: the degradative membrane is divided into the drop of many levels from top to bottom
Degrading film (1), and isolation film (2) are equipped between any two layers of degradable film (1), the isolation film (2) is for being isolated every layer
Degradable film (1) separate each layer degradable film (1) can and degrade.
2. a kind of degradative membrane of multilayer degradation according to claim 1, it is characterised in that: any degradable film (1)
It is single layer membrane structure, the thickness of degradable film (1) is 0.01mm-0.05mm, the water vapour permeability of degradable film (1)
≤0.5g/(m2.24h)。
3. a kind of degradative membrane of multilayer degradation according to claim 2, it is characterised in that: any degradable film (1)
It is the polyethylene film with biodegrade or thermal oxidative degradation performance.
4. a kind of degradative membrane of multilayer degradation according to claim 1, it is characterised in that: any isolation film (2) is equal
For single layer membrane structure, isolation film (2) with a thickness of 0.01mm-0.05mm, OTR oxygen transmission rate≤1cm of isolation film (2)3/
(m2.24h.0.1MPa)。
5. a kind of degradative membrane of multilayer degradation according to claim 4, it is characterised in that: any isolation film (2) is equal
It is made of water-solubility membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244054.5A CN110126402A (en) | 2019-03-28 | 2019-03-28 | A kind of degradative membrane of multilayer degradation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244054.5A CN110126402A (en) | 2019-03-28 | 2019-03-28 | A kind of degradative membrane of multilayer degradation |
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| Publication Number | Publication Date |
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| CN110126402A true CN110126402A (en) | 2019-08-16 |
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ID=67568728
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910244054.5A Pending CN110126402A (en) | 2019-03-28 | 2019-03-28 | A kind of degradative membrane of multilayer degradation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262695A (en) * | 2020-10-24 | 2021-01-26 | 山东清田塑工有限公司 | Three-layer composite high-barrier controllable full-biodegradable mulching film and preparation method thereof |
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| CN105538854A (en) * | 2015-12-23 | 2016-05-04 | 重庆乐乎科技有限公司 | Biodegradation polyethylene material |
| CN105916919A (en) * | 2013-10-27 | 2016-08-31 | 蒂帕有限责任公司 | Biodegradable sheet |
| CN106903952A (en) * | 2017-01-20 | 2017-06-30 | 山东农业大学 | A kind of polylactic acid/starch high-barrier composite membrane and preparation method thereof |
| CN107488303A (en) * | 2017-09-19 | 2017-12-19 | 四川大学 | Degradative membrane constructs |
| CN108602597A (en) * | 2015-12-27 | 2018-09-28 | 埃尔比特系统有限公司 | Biodegradable polymer sheet material |
| CN208425287U (en) * | 2017-12-08 | 2019-01-25 | 云南曲靖塑料(集团)有限公司 | A kind of ultrathin type degradable mulch |
-
2019
- 2019-03-28 CN CN201910244054.5A patent/CN110126402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2647770Y (en) * | 2003-10-13 | 2004-10-13 | 轻工业塑料加工应用研究所 | Separating laminated cocoating film |
| CN105916919A (en) * | 2013-10-27 | 2016-08-31 | 蒂帕有限责任公司 | Biodegradable sheet |
| CN105538854A (en) * | 2015-12-23 | 2016-05-04 | 重庆乐乎科技有限公司 | Biodegradation polyethylene material |
| CN108602597A (en) * | 2015-12-27 | 2018-09-28 | 埃尔比特系统有限公司 | Biodegradable polymer sheet material |
| CN106903952A (en) * | 2017-01-20 | 2017-06-30 | 山东农业大学 | A kind of polylactic acid/starch high-barrier composite membrane and preparation method thereof |
| CN107488303A (en) * | 2017-09-19 | 2017-12-19 | 四川大学 | Degradative membrane constructs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262695A (en) * | 2020-10-24 | 2021-01-26 | 山东清田塑工有限公司 | Three-layer composite high-barrier controllable full-biodegradable mulching film and preparation method thereof |
| CN112262695B (en) * | 2020-10-24 | 2022-06-03 | 山东清田塑工有限公司 | Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof |
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Application publication date: 20190816 |