CN107141671A - Farm mulch and its production technology - Google Patents
Farm mulch and its production technology Download PDFInfo
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- CN107141671A CN107141671A CN201710454449.9A CN201710454449A CN107141671A CN 107141671 A CN107141671 A CN 107141671A CN 201710454449 A CN201710454449 A CN 201710454449A CN 107141671 A CN107141671 A CN 107141671A
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- mulch
- farm mulch
- farm
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
Abstract
The invention discloses a kind of Farm mulch and its production technology, the Farm mulch includes the raw material of following parts by weight：20~40 parts of alkyd resins, 10~20 parts of '-diphenylmethane diisocyanates, 50~70 parts of polyvinyl alcohol, 8~15 parts of converted starches, 2~4 parts of glass fibres, 8~15 parts of celluloses, 30~50 parts of fillers, 1~2 part of antioxidant, 3~6 parts of lubricants, 1~3 part of coupling agent；Filler is flyash, dolomite dust, land plaster, perlite, red mud, lake sludge, river sand or gangue.The present invention using by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, filler, antioxidant, lubricant and coupling agent as raw material, pass through the synergy between each raw material, improve the tensile strength and heat-insulating property of mulch film, beneficial to the growth of crops, positive effect has been extended to agricultural.
Description
Technical field
The present invention relates to mulch film field, more particularly to a kind of Farm mulch and preparation method thereof.
Background technology
China is a large agricultural country and populous nation, and agricultural problem is the grand strategy problem for being related to national economy.
Mulch film heats moistening effect with good, can increase substantially the yield of crops, be after seed, chemical fertilizer, agricultural chemicals
One of important substance material of agricultural production, the application of ground membrane technology is greatly promoted the raising of farm output and benefit, band
The change of mode of agriculture and developing by leaps and bounds for agricultural productive force are moved.
But, traditional plastic film haves the shortcomings that difficult degradation, poor thermal insulation property so that traditional plastic film is big
While sizable application, it also can continue to develop bringing serious harm to agricultural.
The content of the invention
In view of this, it is an object of the invention to provide a kind of Farm mulch and preparation method thereof, degradation speed is fast, insulation
Performance is good.
To achieve these goals, the present invention provides following technical scheme：
A kind of Farm mulch, includes the raw material of following parts by weight：
The filler is flyash, dolomite dust, land plaster, perlite, red mud, lake sludge, river sand or gangue.
Preferably, the modified starch is starch sulphate, starch octenylsuccinate or hydroxypropyl starch ether.
Preferably, the cellulose is methylcellulose, hydroxypropyl methyl cellulose or hydroxyethyl cellulose.
Preferably, the antioxidant is butylated hydroxy anisole, TBHQ or distannous citrate.
Preferably, the lubricant is peanut oil, rapeseed oil or soybean oil.
Preferably, the coupling agent is triethanolamine borate, four n-propyl zirconates, distearyl acyl-oxygen aluminum isopropoxide
Acid esters or aminopropyl triethoxysilane.
Present invention also offers a kind of above-mentioned production technology of Farm mulch, comprise the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, fill out
Material, antioxidant, lubricant and coupling agent are added into retort, and 40~60min is stirred at 50~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
A kind of Farm mulch and its production technology that the present invention is provided, the Farm mulch include following parts by weight
Raw material：20~40 parts of alkyd resins, 10~20 parts of '-diphenylmethane diisocyanates, 50~70 parts of polyvinyl alcohol, 8~15 parts of changes
Property starch, 2~4 parts of glass fibres, 8~15 parts of celluloses, 30~50 parts of fillers, 1~2 part of antioxidant, 3~6 parts of lubricants,
1~3 part of coupling agent；Filler is flyash, dolomite dust, land plaster, perlite, red mud, lake sludge, river sand or gangue.
The present invention with by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, filler,
Antioxidant, lubricant and coupling agent are raw material, by the synergy between each raw material, improve tensile strength and the insulation of mulch film
Performance, beneficial to the growth of crops, positive effect has been extended to agricultural.
Embodiment
In order to further appreciate that the present invention, the preferred embodiments of the invention are described with reference to embodiment, but
It is it should be appreciated that these descriptions are simply to further illustrate the features and advantages of the present invention rather than to patent requirements of the present invention
Limitation.
The invention provides a kind of Farm mulch, include the raw material of following parts by weight：
Filler is flyash, dolomite dust, land plaster, perlite, red mud, lake sludge, river sand or gangue.
The present invention is with by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, fiber
Element, filler, antioxidant, lubricant and coupling agent are raw material, and by the synergy between each raw material, the stretching for improving mulch film is strong
Degree and heat-insulating property, beneficial to the growth of crops, positive effect has been extended to agricultural.
Alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol can in the presence of the coupling agent under form space networks
Shape structure, improves the tensile strength of Farm mulch.
In the present invention, the parts by weight of alkyd resin are 20~40 parts；In an embodiment of the present invention, alkyd resin
Parts by weight are 24~36 parts；In other embodiments, the parts by weight of alkyd resin are 27~32 parts.
In the present invention, the parts by weight of '-diphenylmethane diisocyanate are 10~20 parts；In an embodiment of the present invention,
The parts by weight of '-diphenylmethane diisocyanate are 12~18 parts；In other embodiments, the weight of '-diphenylmethane diisocyanate
It is 13~17 parts to measure number.
In the present invention, the parts by weight of polyvinyl alcohol are 50~70 parts；In an embodiment of the present invention, polyvinyl alcohol
Parts by weight are 53~67 parts；In other embodiments, the parts by weight of polyvinyl alcohol are 57~62 parts.
Converted starch enables to Farm mulch to have degradation.In an embodiment of the present invention, modified starch is
Starch sulphate, starch octenylsuccinate or hydroxypropyl starch ether.
In the present invention, the parts by weight of converted starch are 8~15 parts；In an embodiment of the present invention, converted starch
Parts by weight are 10~13 parts；In other embodiments, the parts by weight of converted starch are 11~12 parts.
Glass fibre can reduce the thermal conductivity of Farm mulch.In the present invention, the weight of glass fibre point family be 2~
4 parts；In an embodiment of the present invention, the parts by weight of glass fibre are 2.4~3.7 parts；In other embodiments, glass fibre
Parts by weight be 2.7~3.2 parts.
Cellulose can improve the light transmission of mulch film.In an embodiment of the present invention, cellulose is methylcellulose, hydroxyl
Propyl methocel or hydroxyethyl cellulose.
In the present invention, the parts by weight of cellulose are 8~15 parts；In an embodiment of the present invention, the weight of cellulose
Number is 10~13 parts；In other embodiments, the parts by weight of cellulose are 11~12 parts.
Filler can improve the heat-insulating property of mulch film.In the present invention, the parts by weight of filler are 30~50 parts；In this hair
In bright embodiment, the parts by weight of filler are 32~46 parts；In other embodiments, the parts by weight of filler are 35~42
Part.
In an embodiment of the present invention, antioxidant is that butylated hydroxy anisole, TBHQ or citric acid are sub-
Tin disodium.
In the present invention, the parts by weight of antioxidant are 1~2 part；In an embodiment of the present invention, the weight of antioxidant
It is 1.2~1.8 parts to measure number；In other embodiments, the parts by weight of antioxidant are 1.4~1.7 parts of Ei.
In an embodiment of the present invention, lubricant is peanut oil, rapeseed oil or soybean oil.
In the present invention, the parts by weight of lubricant are 3~6 parts；In an embodiment of the present invention, the parts by weight of lubricant
Number is 3.5~5.5 parts；In other embodiments, the parts by weight of lubricant are 4~5 parts.
In an embodiment of the present invention, coupling agent is that triethanolamine borate, four n-propyl zirconates, distearyl acyl-oxygen are different
Propoxyl group Aluminate or aminopropyl triethoxysilane.
In the present invention, the parts by weight of coupling agent are 1~3 part；In an embodiment of the present invention, the parts by weight of coupling agent
Number is 1.3~2.6 parts；In other embodiments, the parts by weight of coupling agent are 1.6~2.2 parts.
Present invention also offers a kind of above-mentioned production technology of Farm mulch, comprise the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, fill out
Material, antioxidant, lubricant and coupling agent are added into retort, and 40~60min is stirred at 50~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Above-mentioned alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, fill out
Material, antioxidant, lubricant and coupling agent are same as above, will not be repeated here.
Preparation technology of the invention is simple, cost is low, is capable of effective utilization of time raw material resources, and prepare biology
Degradable mulch tensile strength is high, and degradation speed is fast, and good heat insulating, beneficial to the growth of crops, has extended actively to agricultural
Effect.
In order to further illustrate the present invention, the Farm mulch and its production work provided with reference to embodiment the present invention
Skill is described in detail, but they can not be interpreted as into limiting the scope of the present invention.
Raw material used is commercially available in following examples.
Embodiment 1
Farm mulch includes the raw material of following parts by weight：
36 parts of alkyd resins, 13 parts of '-diphenylmethane diisocyanates, 57 parts of polyvinyl alcohol, 10 parts of starch sulphates, 2.7 parts
Glass fibre, 10 parts of hydroxypropyl methyl celluloses, 35 parts of land plasters, 1.4 parts of distannous citrates, 3 portions of rapeseed oils and 3 parts of ammonia
Propyl-triethoxysilicane；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, starch sulphate, glass fibre, hydroxypropyl first
Base cellulose, land plaster, distannous citrate, rapeseed oil and aminopropyl triethoxysilane are added into retort, 50
40~60min is stirred at~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 2
Farm mulch includes the raw material of following parts by weight：
24 parts of alkyd resins, 18 parts of '-diphenylmethane diisocyanates, 50 parts of polyvinyl alcohol, 11 parts it is octenyl succinated
Starch, 2.4 portions of glass fibres, 13 portions of methylcellulose, 32 portions of dolomite dusts, 1.2 portions of TBHQs, 3.5 portions of soybean
Oil and 2.6 parts of distearyl acyl-oxygen aluminum isopropoxide acid esters；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, starch octenylsuccinate, glass fibers
Dimension, methylcellulose, dolomite powder, TBHQ, soybean oil and distearyl acyl-oxygen aluminum isopropoxide acid esters are added
To retort is entered, 40~60min is stirred at 50~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 3
Farm mulch includes the raw material of following parts by weight：
27 parts of alkyd resins, 17 parts of '-diphenylmethane diisocyanates, 57 parts of polyvinyl alcohol, 12 parts of starch sulphates, 3.2 parts
Glass fibre, 8 parts of hydroxyethyl celluloses, 42 parts of flyash, 1.8 parts of distannous citrates, 4 portions of rapeseed oils and 2.2 part four are just
Propyl zirconate；
The production technology of Farm mulch, comprises the following steps：
A) it is alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, starch sulphate, glass fibre, ethoxy is fine
Dimension element, flyash, distannous citrate, rapeseed oil and four n-propyl zirconates are added into retort, at 50~60 DEG C
40~60min is stirred, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 4
Farm mulch includes the raw material of following parts by weight：
20 parts of alkyd resins, 20 parts of '-diphenylmethane diisocyanates, 62 parts of polyvinyl alcohol, 15 parts of hydroxypropyl starch ethers, 3.7
Part glass fibre, 15 parts of hydroxypropyl methyl celluloses, 30 parts of red muds, 2 parts of TBHQs, 5 portions of peanut oil and 1.6 part three
Monoethanolamine borate；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, hydroxypropyl starch ether, glass fibre, hydroxypropyl
Methylcellulose, red mud, TBHQ, peanut oil and triethanolamine borate are added into retort, 50~60
40~60min is stirred at DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 5
Farm mulch includes the raw material of following parts by weight：
40 parts of alkyd resins, 10 parts of '-diphenylmethane diisocyanates, 67 parts of polyvinyl alcohol, 13 parts of starch sulphates, 2 parts of glass
Glass fiber, 11 parts of methylcellulose, 50 parts of perlites, 1 part of butylated hydroxy anisole, 5.5 portions of soybean oils and 1.3 parts of distearyls
Oxygen isopropoxy Aluminate；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, starch sulphate, glass fibre, Methyl cellulose
Element, perlite, butylated hydroxy anisole, soybean oil and distearyl acyl-oxygen aluminum isopropoxide acid esters are added into retort, 50
40~60min is stirred at~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 6
Farm mulch includes the raw material of following parts by weight：
32 parts of alkyd resins, 12 parts of '-diphenylmethane diisocyanates, 70 parts of polyvinyl alcohol, 8 parts it is octenyl succinated
Starch, 4 portions of glass fibres, 12 portions of hydroxypropyl methyl celluloses, 46 portions of river sands, 1.7 portions of distannous citrates, 6 portions of soybean oils
With 1 part of triethanolamine borate；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, starch octenylsuccinate, glass fibers
Dimension, hydroxypropyl methyl cellulose, river sand, distannous citrate, soybean oil and triethanolamine borate are added into retort,
40~60min is stirred at 50~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Embodiment 7
Farm mulch includes the raw material of following parts by weight：
30 parts of alkyd resins, 15 parts of '-diphenylmethane diisocyanates, 60 parts of polyvinyl alcohol, 11.5 parts of hydroxypropyl starch ethers, 3
Part glass fibre, 11.5 portions of hydroxyethyl celluloses, 38 portions of gangues, 1.5 portions of butylated hydroxy anisoles, 4.5 portions of peanut oil and 1.8
Part aminopropyl triethoxysilane；
The production technology of Farm mulch, comprises the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, hydroxypropyl starch ether, glass fibre, ethoxy
Cellulose, gangue, butylated hydroxy anisole, peanut oil and aminopropyl triethoxysilane are added into retort, 50~
40~60min is stirred at 60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Produce to embodiment 1~7 obtained Farm mulch and carry out degradation rate, tensile strength, thermal conductivity factor, light transmittance
Test, the results are shown in Table 1.
The experimental result of the embodiment 1~7 of table 1
A kind of Farm mulch and its production technology provided above the present invention is described in detail, and herein should
The principle and embodiment of the present invention are set forth with specific case, the explanation of above example is only intended to help and managed
Solve the method and its core concept of the present invention, it is noted that for those skilled in the art, do not departing from
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this hair
In bright scope of the claims.
Claims (7)
1. a kind of Farm mulch, it is characterised in that include the raw material of following parts by weight：
The filler is flyash, dolomite dust, land plaster, perlite, red mud, lake sludge, river sand or gangue.
2. Farm mulch as claimed in claim 1, it is characterised in that the modified starch is starch sulphate, octenyl
Succinic acid esterification starch or hydroxypropyl starch ether.
3. Farm mulch as claimed in claim 1, it is characterised in that the cellulose is methylcellulose, hydroxypropyl first
Base cellulose or hydroxyethyl cellulose.
4. Farm mulch as claimed in claim 1, it is characterised in that the antioxidant is butylated hydroxy anisole, uncle
Butylhydroquinone or distannous citrate.
5. Farm mulch as claimed in claim 1, it is characterised in that the lubricant is peanut oil, rapeseed oil or soybean
Oil.
6. Farm mulch as claimed in claim 1, it is characterised in that the coupling agent be triethanolamine borate, four just
Propyl zirconate, distearyl acyl-oxygen aluminum isopropoxide acid esters or aminopropyl triethoxysilane.
7. a kind of production technology of Farm mulch as claimed in claim 1, it is characterised in that comprise the following steps：
A) by alkyd resin, '-diphenylmethane diisocyanate, polyvinyl alcohol, converted starch, glass fibre, cellulose, filler, anti-
Oxygen agent, lubricant and coupling agent are added into retort, and 40~60min is stirred at 50~60 DEG C, compound is obtained；
B) compound made from step a) is put into inflation film manufacturing machine and carries out blown film, obtain film；
C) the obtained films of step b) are cut, bundling, obtain Farm mulch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454449.9A CN107141671A (en) | 2017-06-14 | 2017-06-14 | Farm mulch and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454449.9A CN107141671A (en) | 2017-06-14 | 2017-06-14 | Farm mulch and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107141671A true CN107141671A (en) | 2017-09-08 |
Family
ID=59782455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454449.9A Pending CN107141671A (en) | 2017-06-14 | 2017-06-14 | Farm mulch and its production technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN107141671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179935A (en) * | 2018-11-13 | 2019-01-11 | 湖北恒沁环保科技有限责任公司 | A kind of sludge curing agent and its preparation method and application |
| CN111925616A (en) * | 2020-07-23 | 2020-11-13 | 安徽瑞鸿新材料科技有限公司 | Method for preparing agricultural mulching film by using PVA/bio-based composite material |
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| CN103168058A (en) * | 2011-01-31 | 2013-06-19 | 三星精密化学股份有限公司 | Biodegradable resin and method for manufacturing same |
| CN104893200A (en) * | 2015-06-02 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-processability full-degradable plastic film and manufacturing method thereof |
| CN106117622A (en) * | 2016-08-19 | 2016-11-16 | 滁州嘉实农业科技有限公司 | A kind of degradable mulch and preparation method |
| CN106700359A (en) * | 2016-12-06 | 2017-05-24 | 淄博龙沙高分子材料科技有限公司 | Water-soluble environment-friendly special material for mulching film |
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2017
- 2017-06-14 CN CN201710454449.9A patent/CN107141671A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168058A (en) * | 2011-01-31 | 2013-06-19 | 三星精密化学股份有限公司 | Biodegradable resin and method for manufacturing same |
| CN104893200A (en) * | 2015-06-02 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-processability full-degradable plastic film and manufacturing method thereof |
| CN106117622A (en) * | 2016-08-19 | 2016-11-16 | 滁州嘉实农业科技有限公司 | A kind of degradable mulch and preparation method |
| CN106700359A (en) * | 2016-12-06 | 2017-05-24 | 淄博龙沙高分子材料科技有限公司 | Water-soluble environment-friendly special material for mulching film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179935A (en) * | 2018-11-13 | 2019-01-11 | 湖北恒沁环保科技有限责任公司 | A kind of sludge curing agent and its preparation method and application |
| CN111925616A (en) * | 2020-07-23 | 2020-11-13 | 安徽瑞鸿新材料科技有限公司 | Method for preparing agricultural mulching film by using PVA/bio-based composite material |
| CN111925616B (en) * | 2020-07-23 | 2022-11-08 | 安徽瑞鸿新材料科技有限公司 | Method for preparing agricultural mulching film by using PVA/bio-based composite material |
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Application publication date: 20170908 |