CN109354724A - A kind of degradable moisturizing mulch and preparation method thereof - Google Patents
A kind of degradable moisturizing mulch and preparation method thereof Download PDFInfo
- Publication number
- CN109354724A CN109354724A CN201811121875.1A CN201811121875A CN109354724A CN 109354724 A CN109354724 A CN 109354724A CN 201811121875 A CN201811121875 A CN 201811121875A CN 109354724 A CN109354724 A CN 109354724A
- Authority
- CN
- China
- Prior art keywords
- parts
- added
- degradable
- coating liquid
- chitosan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/024—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G
- C08G81/027—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G containing polyester or polycarbonate sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2487/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/011—Nanostructured additives
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
Abstract
The invention discloses a kind of degradable moisturizing mulches and preparation method thereof, raw material is as follows: chitosan, acrylamide, p-aminobenzene sulfonic acid, aluminium oxide, tetrahydrofuran, polylactic acid, polyvinyl alcohol, polycaprolactone, polyethylene glycol, petroleum ether, low density polyethylene (LDPE), Lauryl Alcohol ester, Chinese medicine extract, nano-titanium dioxide, steps are as follows: 1) preparing modification of chitosan；2) polydactyl acid is prepared；3) low density polyethylene (LDPE) is added in petroleum ether, and Lauryl Alcohol ester, polydactyl acid are added after stirring and dissolving, coating liquid A is made after heating reaction；4) Chinese medicine extract, nano-titanium dioxide are added in distilled water, modification of chitosan and coating liquid A is added, coating liquid B is made after stirring, coating liquid B is hung into thin film processed on smooth glass plate, it can be prepared by after drying, degradable moisturizing mulch prepared by the present invention, there is good water suction moisture retention, also there is good biological degradability simultaneously, not can cause environmental pollution.
Description
Technical field
The invention belongs to agricultural plantation technology fields, and in particular to a kind of degradable moisturizing mulch and preparation method thereof.
Background technique
Mulch, that is, covered ground film, usually transparent or black thin film are used for covered ground, to keep soil moisture,
Soil texture is maintained, disease caused by pest attacks crop and certain micro-organisms etc. is prevented, promotes the function of plant growth.
Mulch seems thin layer, but acts on quite big, has and mitigates raindrop impact, prevents from washing away and skinning is formed
Effect, can effectively reduce the evaporation of soil moisture, and improving soil moisture after the soil moisture conservation of day drought, rain promotes crop to send out the absorption of moisture and growth
It educates, improves the utilization efficiency of soil moisture.Temperature, the humidity that soil conservation can be made suitable make to slow down under ground temperature, the duration
It is long, it conducive to the decomposed of fertilizer and decomposes, improves land fertility.Mulch tree lid is at low cost, easy to use, amount of increase in production is big, is one
Item can prevent erosion and improve the common measure of crop yield.
Currently, the covering with ground sheeting area and mulch usage amount in China rank the first in the world, a large amount of residual film exists so that soil
Earth moisture and nutrient transport are obstructed, to cause corps nutrient bad, yield decline causes the underproduction to crops, moreover, existing
Some mulch water imbibitions and performance of keeping humidity are poor, cannot will be recycled in soil after the moisture absorption evaporated in soil.Therefore, it grinds
Making the excellent mulch of degradable water imbibition and moisture retention is particularly important.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of degradable moisturizing mulch and preparation method thereof is provided.
The present invention is achieved by the following technical solutions:
A kind of degradable moisturizing mulch, by weight component are as follows: 20-30 parts of chitosan, 4-5 parts of acrylamide, to amino
3-4 parts of benzene sulfonic acid, 1-2 parts of aluminium oxide, 45-50 parts of tetrahydrofuran, 20-25 parts of polylactic acid, 6-7 parts of polyvinyl alcohol, polycaprolactone
5-6 parts, 3-4 parts of polyethylene glycol, 40-50 parts of petroleum ether, 4-5 parts of low density polyethylene (LDPE), 3-4 parts of Lauryl Alcohol ester, traditional Chinese medicine extraction
2-3 parts of liquid, 1-2 parts of nano-titanium dioxide.
Preferably, a kind of degradable moisturizing mulch, wherein the Chinese medicine extract be by the coptis, radix bupleuri, scutellaria according to
It is added in the water that 2-3 times is measured after the weight ratio mixing of 1:1:1, is used instead after boiling with high heat and be cooked by slow fire 30-40min, then
It is prepared through filtering.
Preferably, a kind of preparation method of degradable moisturizing mulch, the specific steps are as follows:
1) 20-30 parts of chitosan are taken, is added in the dilute hydrochloric acid solution that 2-3 times is measured, acrylamide 4-5 is added after stirring and dissolving
Part, 3-4 parts of p-aminobenzene sulfonic acid stir 20-40min in the case where revolving speed is 300-400r/min after mixing, then add oxidation
1-2 parts of aluminium, it is warming up to 70-80 DEG C, isothermal reaction 3-4h, is centrifuged after cooling, by obtained solid product through vacuum
Dry obtained modification of chitosan；
2) it takes 45-50 parts of tetrahydrofuran, is added polylactic acid 20-25 part, be heated to 50-60 DEG C, after stirring and dissolving, addition polyethylene
6-7 parts of alcohol, 5-6 parts of polycaprolactone stir 40-45min in the case where revolving speed is 400-500r/min, add 3-4 parts of polyethylene glycol,
It is warming up to 85-90 DEG C, isothermal reaction 3-4h, is centrifuged after cooling, obtained solid product is moved in baking oven, is heated
To 60-65 DEG C, polydactyl acid is made in dry 10-12h；
3) 40-50 parts of petroleum ether are taken, low density polyethylene (LDPE) 4-5 parts is added, is heated to 100-120 DEG C, is added ten after stirring and dissolving
Two 3-4 parts of carbon alcohol esters stir 20-30min in the case where revolving speed is 300-400r/min, then add the polydactyl acid in 2),
Isothermal reaction 2-3h, it is cold take to room temperature after obtain coating liquid A；
4) 2-3 parts of Chinese medicine extract, 1-2 parts of nano-titanium dioxide are taken, is added in the 4-6 times of distilled water measured, adds in 1)
Modification of chitosan, after mixing under 400-500W ultrasonic wave vibrating dispersion 20-30min, then add the coating liquid A in 3),
30-40min is stirred in the case where revolving speed is 600-800r/min, can be prepared by coating liquid B, then by coating liquid B in smooth glass
One layer of 0.2-0.3mm film of system is hung on plate, is then moved in baking oven, and dry 15-20h, can be prepared by degradable at 60-70 DEG C
Moisturizing mulch.
Preferably, a kind of preparation method of degradable moisturizing mulch, wherein the concentration of dilute hydrochloric acid described in step 1) be
0.2-0.4mol/L。
The present invention has the advantage that compared with prior art
1. degradable moisturizing mulch prepared by the present invention adds propylene firstly, dissolving chitosan in dilute hydrochloric acid solution
Amide, p-aminobenzene sulfonic acid are reacted under the action of alumina catalyst, are reacted with chitosan, in chitosan point
The strongly hydrophilics groups such as amide groups, amino, sulfonic group are introduced in subchain, to improve the water imbibition and humidity-preserving type of chitosan；Its
It is secondary, polylactic acid is dissolved in tetrahydrofuran solution, adds polyvinyl alcohol, polycaprolactone is stirred, then be added it is poly-
Ethylene glycol carries out heating reaction, and under the catalytic action of polyethylene glycol, polyvinyl alcohol and polycaprolactone are copolymerized with polylactic acid
Reaction, improves the compatibility and degradability of polylactic acid；Again, Lauryl Alcohol ester is added after low density polyethylene (LDPE) being dissolved to carry out instead
It answers, the weatherability and stability of polydactyl acid can be improved in low density polyethylene (LDPE), and film forming then can be improved in Lauryl Alcohol ester；
Finally, Chinese medicine extract can then play bactericidal effect, inhibit the growth of miscellaneous bacteria, it is strong that film then can be improved in nano-titanium dioxide
Degree, and the ageing resistance of film can be improved with shielding ultraviolet rays.
2. degradable moisturizing mulch prepared by the present invention has good water suction moisture retention, can will evaporate in soil
Moisture absorption after store in the film, moisture-keeping function, and after Plastic-film disintegration, quilt after the water release of storage are risen to soil
Soil absorption plays the effect recycled, while also having good biological degradability, not can cause environmental pollution.
Specific embodiment
Below with reference to specific implementation method, the present invention is described further.
Embodiment 1
A kind of degradable moisturizing mulch, by weight component are as follows: 20 parts of chitosan, 4 parts of acrylamide, p-aminobenzene sulfonic acid
3 parts, 1 part of aluminium oxide, 45 parts of tetrahydrofuran, 20 parts of polylactic acid, 6 parts of polyvinyl alcohol, 5 parts of polycaprolactone, 3 parts of polyethylene glycol, stone
40 parts of oily ether, 4 parts of low density polyethylene (LDPE), 3 parts of Lauryl Alcohol ester, 2 parts of Chinese medicine extract, 1 part of nano-titanium dioxide.
Preferably, wherein the Chinese medicine extract is after being mixed by the coptis, radix bupleuri, scutellaria according to the weight ratio of 1:1:1
It is added in the water of 2 times of amounts, is used instead after boiling with high heat and be cooked by slow fire 30min, be then prepared through filtering.
A kind of preparation method of degradable moisturizing mulch, the specific steps are as follows:
1) 20 parts of chitosan are taken, is added in the dilute hydrochloric acid solution of 2 times of amounts, 4 parts of acrylamide is added after stirring and dissolving, to amino
3 parts of benzene sulfonic acid, 20min is stirred in the case where revolving speed is 300r/min after mixing, then adds 1 part of aluminium oxide, is warming up to 70 DEG C, perseverance
Temperature reaction 3h, is centrifuged, by the vacuum dried obtained modification of chitosan of obtained solid product after cooling；
2) 45 parts of tetrahydrofuran are taken, is added 20 parts of polylactic acid, is heated to 50 DEG C, after stirring and dissolving, 6 parts of polyvinyl alcohol is added, gathers
5 parts of caprolactone, 40min is stirred in the case where revolving speed is 400r/min, 3 parts of polyethylene glycol is added, is warming up to 85 DEG C, isothermal reaction
3h is centrifuged after cooling, obtained solid product is moved in baking oven, is heated to 60 DEG C, and dry 12h is made and is modified
Polylactic acid；
3) 40 parts of petroleum ether are taken, 4 parts of low density polyethylene (LDPE) is added, is heated to 100 DEG C, Lauryl Alcohol ester 3 is added after stirring and dissolving
Part, 20min is stirred in the case where revolving speed is 300r/min, then adds the polydactyl acid in 2), isothermal reaction 2h is cold to take to room
Coating liquid A is obtained after temperature；
4) 2 parts of Chinese medicine extract, 1 part of nano-titanium dioxide are taken, is added in the distilled water of 4 times of amounts, adds the modification shell in 1)
Glycan, after mixing under 400W ultrasonic wave vibrating dispersion 20min, then add the coating liquid A in 3), revolving speed be 600r/
30min is stirred under min, can be prepared by coating liquid B, then coating liquid B is hung to one layer of 0.2mm of system on smooth glass plate thin
Then film moves in baking oven, dry 20h, can be prepared by degradable moisturizing mulch at 60 DEG C.
Preferably, wherein the concentration of dilute hydrochloric acid described in step 1) is 0.2mol/L.
Embodiment 2
A kind of degradable moisturizing mulch, by weight component are as follows: 25 parts of chitosan, 4 parts of acrylamide, p-aminobenzene sulfonic acid
3 parts, 1 part of aluminium oxide, 47 parts of tetrahydrofuran, 23 parts of polylactic acid, 6 parts of polyvinyl alcohol, 5 parts of polycaprolactone, 3 parts of polyethylene glycol, stone
45 parts of oily ether, 4 parts of low density polyethylene (LDPE), 3 parts of Lauryl Alcohol ester, 2 parts of Chinese medicine extract, 1 part of nano-titanium dioxide.
Preferably, wherein the Chinese medicine extract is after being mixed by the coptis, radix bupleuri, scutellaria according to the weight ratio of 1:1:1
It is added in the water of 2 times of amounts, is used instead after boiling with high heat and be cooked by slow fire 35min, be then prepared through filtering.
A kind of preparation method of degradable moisturizing mulch, the specific steps are as follows:
1) 25 parts of chitosan are taken, is added in the dilute hydrochloric acid solution of 2.5 times of amounts, 4 parts of acrylamide is added after stirring and dissolving, to ammonia
3 part of base benzene sulfonic acid, 30min is stirred in the case where revolving speed is 300r/min after mixing, 1 part of aluminium oxide is then added, is warming up to 75 DEG C,
Isothermal reaction 3.5h is centrifuged, by the vacuum dried obtained modification of chitosan of obtained solid product after cooling；
2) 47 parts of tetrahydrofuran are taken, is added 23 parts of polylactic acid, is heated to 55 DEG C, after stirring and dissolving, 6 parts of polyvinyl alcohol is added, gathers
5 parts of caprolactone, 43min is stirred in the case where revolving speed is 400r/min, 3 parts of polyethylene glycol is added, is warming up to 87 DEG C, isothermal reaction
3.5h is centrifuged after cooling, obtained solid product is moved in baking oven, is heated to 60 DEG C, and dry 11h is made and changes
Property polylactic acid；
3) 45 parts of petroleum ether are taken, 4 parts of low density polyethylene (LDPE) is added, is heated to 110 DEG C, Lauryl Alcohol ester 3 is added after stirring and dissolving
Part, stir 25min in the case where revolving speed is 300r/min, then add the polydactyl acid in 2), isothermal reaction 2.5h, it is cold take to
Coating liquid A is obtained after room temperature；
4) 2 parts of Chinese medicine extract, 1 part of nano-titanium dioxide are taken, is added in the distilled water of 5 times of amounts, adds the modification shell in 1)
Glycan, after mixing under 400W ultrasonic wave vibrating dispersion 25min, then add the coating liquid A in 3), revolving speed be 700r/
35min is stirred under min, can be prepared by coating liquid B, then coating liquid B is hung to one layer of 0.2mm of system on smooth glass plate thin
Then film moves in baking oven, dry 17h, can be prepared by degradable moisturizing mulch at 65 DEG C.
Preferably, wherein the concentration of dilute hydrochloric acid described in step 1) is 0.2-0.4mol/L.
Embodiment 3
A kind of degradable moisturizing mulch, by weight component are as follows: 30 parts of chitosan, 5 parts of acrylamide, p-aminobenzene sulfonic acid
4 parts, 2 parts of aluminium oxide, 50 parts of tetrahydrofuran, 25 parts of polylactic acid, 7 parts of polyvinyl alcohol, 6 parts of polycaprolactone, 4 parts of polyethylene glycol, stone
50 parts of oily ether, 5 parts of low density polyethylene (LDPE), 4 parts of Lauryl Alcohol ester, 3 parts of Chinese medicine extract, 2 parts of nano-titanium dioxide.
Preferably, wherein the Chinese medicine extract is after being mixed by the coptis, radix bupleuri, scutellaria according to the weight ratio of 1:1:1
It is added in the water of 3 times of amounts, is used instead after boiling with high heat and be cooked by slow fire 40min, be then prepared through filtering.
A kind of preparation method of degradable moisturizing mulch, the specific steps are as follows:
1) 30 parts of chitosan are taken, is added in the dilute hydrochloric acid solution of 3 times of amounts, 5 parts of acrylamide is added after stirring and dissolving, to amino
4 parts of benzene sulfonic acid, 40min is stirred in the case where revolving speed is 400r/min after mixing, then adds 2 parts of aluminium oxide, is warming up to 80 DEG C, perseverance
Temperature reaction 4h, is centrifuged, by the vacuum dried obtained modification of chitosan of obtained solid product after cooling；
2) 50 parts of tetrahydrofuran are taken, is added 25 parts of polylactic acid, is heated to 60 DEG C, after stirring and dissolving, 7 parts of polyvinyl alcohol is added, gathers
6 parts of caprolactone, 45min is stirred in the case where revolving speed is 500r/min, 4 parts of polyethylene glycol is added, is warming up to 90 DEG C, isothermal reaction
4h is centrifuged after cooling, obtained solid product is moved in baking oven, is heated to 65 DEG C, and dry 10h is made and is modified
Polylactic acid；
3) 50 parts of petroleum ether are taken, 5 parts of low density polyethylene (LDPE) is added, is heated to 120 DEG C, Lauryl Alcohol ester 4 is added after stirring and dissolving
Part, 30min is stirred in the case where revolving speed is 400r/min, then adds the polydactyl acid in 2), isothermal reaction 3h is cold to take to room
Coating liquid A is obtained after temperature；
4) 3 parts of Chinese medicine extract, 2 parts of nano-titanium dioxide are taken, is added in the distilled water of 6 times of amounts, adds the modification shell in 1)
Glycan, after mixing under 500W ultrasonic wave vibrating dispersion 30min, then add the coating liquid A in 3), revolving speed be 800r/
40min is stirred under min, can be prepared by coating liquid B, then coating liquid B is hung to one layer of 0.3mm of system on smooth glass plate thin
Then film moves in baking oven, dry 15h, can be prepared by degradable moisturizing mulch at 70 DEG C.
Preferably, wherein the concentration of dilute hydrochloric acid described in step 1) is 0.4mol/L.
Comparative example 1: acrylamide and p-aminobenzene sulfonic acid in removal step 1), remaining is same as Example 1.
Comparative example 2: polyvinyl alcohol and polycaprolactone in removal step 2, remaining is same as Example 1.
Comparative example 3: the low density polyethylene (LDPE) in removal step 3), remaining is same as Example 1.
Comparative example 4: the nano-titanium dioxide in removal step 4), remaining is same as Example 1.
Experimental example: carrying out performance detection to the mulch in embodiment 1 and comparative example 1-4 respectively, and control group is selected commercially available
Common degradable mulch, as a result as shown in Table 1:
Table one
From table one, it can be seen that, the ground film properties in embodiment 1 are substantially better than comparative example 1-4 and control group, it can be seen that, this hair
The mulch of bright preparation not only has good tensile strength and light transmittance, but also degradability is strong, and water absorption rate is high.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It transforms or replaces, should be covered by the scope of protection of the present invention without what creative work was expected.
Claims (4)
1. a kind of degradable moisturizing mulch, which is characterized in that component is as follows by weight: 20-30 parts of chitosan, acrylamide
4-5 parts, 3-4 parts of p-aminobenzene sulfonic acid, 1-2 parts of aluminium oxide, 45-50 parts of tetrahydrofuran, 20-25 parts of polylactic acid, polyvinyl alcohol 6-7
Part, 5-6 parts of polycaprolactone, 3-4 parts of polyethylene glycol, 40-50 parts of petroleum ether, 4-5 parts of low density polyethylene (LDPE), Lauryl Alcohol ester 3-4
Part, 2-3 parts of Chinese medicine extract, 1-2 parts of nano-titanium dioxide.
2. a kind of degradable moisturizing mulch as described in claim 1, which is characterized in that the Chinese medicine extract is by Huang
Company, radix bupleuri, scutellaria are used instead after boiling with high heat and are cooked by slow fire according to being added in the water that 2-3 times is measured after the weight ratio mixing of 1:1:1
30-40min is boiled, is then prepared through filtering.
3. a kind of preparation method of degradable moisturizing mulch described in claim 1, which is characterized in that specific step is as follows:
1) 20-30 parts of chitosan are taken, is added in the dilute hydrochloric acid solution that 2-3 times is measured, acrylamide 4-5 is added after stirring and dissolving
Part, 3-4 parts of p-aminobenzene sulfonic acid stir 20-40min in the case where revolving speed is 300-400r/min after mixing, then add oxidation
1-2 parts of aluminium, it is warming up to 70-80 DEG C, isothermal reaction 3-4h, is centrifuged after cooling, by obtained solid product through vacuum
Dry obtained modification of chitosan；
2) it takes 45-50 parts of tetrahydrofuran, is added polylactic acid 20-25 part, be heated to 50-60 DEG C, after stirring and dissolving, addition polyethylene
6-7 parts of alcohol, 5-6 parts of polycaprolactone stir 40-45min in the case where revolving speed is 400-500r/min, add 3-4 parts of polyethylene glycol,
It is warming up to 85-90 DEG C, isothermal reaction 3-4h, is centrifuged after cooling, obtained solid product is moved in baking oven, is heated
To 60-65 DEG C, polydactyl acid is made in dry 10-12h；
3) 40-50 parts of petroleum ether are taken, low density polyethylene (LDPE) 4-5 parts is added, is heated to 100-120 DEG C, is added ten after stirring and dissolving
Two 3-4 parts of carbon alcohol esters stir 20-30min in the case where revolving speed is 300-400r/min, then add the polydactyl acid in 2),
Isothermal reaction 2-3h, it is cold take to room temperature after obtain coating liquid A；
4) 2-3 parts of Chinese medicine extract, 1-2 parts of nano-titanium dioxide are taken, is added in the 4-6 times of distilled water measured, adds in 1)
Modification of chitosan, after mixing under 400-500W ultrasonic wave vibrating dispersion 20-30min, then add the coating liquid A in 3),
30-40min is stirred in the case where revolving speed is 600-800r/min, can be prepared by coating liquid B, then by coating liquid B in smooth glass
One layer of 0.2-0.3mm film of system is hung on plate, is then moved in baking oven, and dry 15-20h, can be prepared by degradable at 60-70 DEG C
Moisturizing mulch.
4. a kind of preparation method of degradable moisturizing mulch as claimed in claim 2, which is characterized in that described in step 1)
The concentration of dilute hydrochloric acid is 0.2-0.4mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121875.1A CN109354724A (en) | 2018-09-26 | 2018-09-26 | A kind of degradable moisturizing mulch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121875.1A CN109354724A (en) | 2018-09-26 | 2018-09-26 | A kind of degradable moisturizing mulch and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109354724A true CN109354724A (en) | 2019-02-19 |
Family
ID=65347803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811121875.1A Pending CN109354724A (en) | 2018-09-26 | 2018-09-26 | A kind of degradable moisturizing mulch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109354724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117048159A (en) * | 2023-08-10 | 2023-11-14 | 安徽紫金新材料科技股份有限公司 | Low-odor dairy product packaging film and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101177305B1 (en) * | 2011-04-29 | 2012-08-30 | 전남대학교산학협력단 | Polymer film for storage and controlled release of phytoncide and the fabrication method thereof |
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| WO2018117885A1 (en) * | 2016-12-21 | 2018-06-28 | S.C. Institutul De Cercetari Produse Auxiliare Organice S.A. | Pla - based active and degradable biocomposites for food packaging |
| CN108276598A (en) * | 2017-12-27 | 2018-07-13 | 南充三樱药用包装材料有限公司 | A kind of degradable food product packing film with antibacterial functions |
| CN108559237A (en) * | 2018-05-02 | 2018-09-21 | 合肥市晨雷思建筑材料科技有限公司 | A kind of antibacterial biological thin-film material and preparation method thereof |
-
2018
- 2018-09-26 CN CN201811121875.1A patent/CN109354724A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101177305B1 (en) * | 2011-04-29 | 2012-08-30 | 전남대학교산학협력단 | Polymer film for storage and controlled release of phytoncide and the fabrication method thereof |
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| WO2018117885A1 (en) * | 2016-12-21 | 2018-06-28 | S.C. Institutul De Cercetari Produse Auxiliare Organice S.A. | Pla - based active and degradable biocomposites for food packaging |
| CN108276598A (en) * | 2017-12-27 | 2018-07-13 | 南充三樱药用包装材料有限公司 | A kind of degradable food product packing film with antibacterial functions |
| CN108559237A (en) * | 2018-05-02 | 2018-09-21 | 合肥市晨雷思建筑材料科技有限公司 | A kind of antibacterial biological thin-film material and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 冯彬彬等: "《中药药理与应用》", 30 November 2015, 中国中医药出版社 * |
| 温晓菁主编: "《材料科学与基础 高分子材料分册》", 31 January 2015, 哈尔滨工业大学出版社 * |
| 高学敏: "《中华医学百科全书 中药学》", 30 June 2017, 中国协和医科大学出版社 * |
| 黎厚斌等: "《包装应用化学》", 31 January 2014, 北京：印刷工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117048159A (en) * | 2023-08-10 | 2023-11-14 | 安徽紫金新材料科技股份有限公司 | Low-odor dairy product packaging film and preparation method thereof |
| CN117048159B (en) * | 2023-08-10 | 2024-04-30 | 安徽紫金新材料科技股份有限公司 | Low-odor dairy product packaging film and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101319058B (en) | Method for producing wood-plastic composite material and produced wood-plastic composite material | |
| CN105153474B (en) | A kind of stretchable type organic waste residues base degradable mulch and preparation method thereof | |
| CN106566261A (en) | Crop waste degradable mulching film and preparing method thereof | |
| CN102226030B (en) | Preparation method of crop straw based high power water absorbent | |
| CN101486781A (en) | Preparation of high hydroscopic resin by reversed phase microemulsion process | |
| CN103897112A (en) | Preparation method of super absorbent polymer (nitrogen) aquasorb-fertilizer | |
| CN105367722A (en) | Preparation method of wheat straw base macromolecule water-retaining agent | |
| CN101434714B (en) | Nano red light conversion agent special for agricultural film and preparation thereof | |
| CN102634103A (en) | Rare-earth added degradable light-conversion mulching film | |
| CN105949737B (en) | A kind of degradable mulch and preparation method thereof | |
| CN104804355A (en) | Biodegradable agricultural liquid mulching film and preparation method thereof | |
| CN101638459B (en) | Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material | |
| CN104694135A (en) | Liquid mulching film | |
| CN106084132A (en) | A kind of environmental protection, the preparation method of Mobyneb agricultural water-retaining agent | |
| CN109354724A (en) | A kind of degradable moisturizing mulch and preparation method thereof | |
| CN101289526A (en) | Method for preparing kaolin complex high hydroscopic resin through light polymerization method | |
| CN111040210A (en) | Method for producing mulching film by using crop straws and mulching film | |
| CN109251488A (en) | A kind of biodegradable conversion film and preparation method thereof | |
| CN108819406A (en) | A kind of preparation method of heat-resisting degradation material | |
| CN108034205A (en) | A kind of preparation method of peanut shell fibre modification polylactic acid | |
| CN109438943A (en) | A kind of preparation method of environmental protection agricultural mulching | |
| CN108948701A (en) | A kind of environmental protection high-ductility agricultural film and preparation method thereof | |
| CN104098921B (en) | A kind of water conservation paper mulch film | |
| CN103896691A (en) | Preparation method of super absorbent polymer (compound) water retention fertilizer | |
| CN102649833B (en) | Method for preparing superabsorbent resin based on waste woody plant branches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190219 |