CN109054303A - A kind of preparation method and applications of agricultural plastic film - Google Patents
A kind of preparation method and applications of agricultural plastic film Download PDFInfo
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- C08J5/18—Manufacture of films or sheets
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
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- 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
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
The invention discloses a kind of preparation method and applications of agricultural plastic film, this method is lauric acid diethyl amide, tributyl 2-acetylcitrate will to be added after carbon black, calcium stearate, lanthanum hexaboride grinding to stir to obtain mixture A at high temperature；Chlorinated polyether will be added after epoxy resin, high density polyethylene (HDPE) ultrasonic disperse, Sodium Polyacrylate is ultrasonically treated to obtain mixture B again；Again by mixture A and B heating stirring in a kettle, adjusts and polyethylene methacrylic acid ethylene oxidic ester is added after pH, plant fiber starch continues heating stirring；Then the modified mixture of obtained acid heat is kneaded, then the circular port die head extrusion-blown modling through double screw extruder, traction cooling with plasticizer, age resister, obtains plastic film.The plastic film being prepared, turns light efficiency and service life is significantly increased, and has a good application prospect as agriculture greenhouse film.
Description
Technical field
The present invention relates to plastic material technical fields, and in particular to a kind of preparation method of agricultural plastic film and its answers
With.
Background technique
With the continuous development of industry, plastics have been more and more widely used.Polyethylene, polypropylene, PTT polyester, ABS
Etc. a large amount of uses in industries such as water-saving irrigation, building, indoor decoration, furniture, electric power, transports.Common plastic film has poly-
Ethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polyester film (PET), polypropylene (PP), nylon etc..Various plastics
Film performance is different, and purposes is also different.China is large agricultural country, agricultural plastic film to the yield and quality for improving crops,
Shorten the crop growth period, abundant and raising people's living standard plays an important role.It is fast-developing by decades,
Especially China's agricultural plastic film is significantly promoted in performance, quality, production technology in recent years, to high property
The integrated direction of energy, multifunction, specialization, seriation, complex art is developed.In recent years agricultural plastic film increasingly to
The service life is synchronous with function, long-acting ageing-resistant, long-acting anti-dropping fog dispersal, diffusing scattering turn the directions such as light, customizations and develop.To current agriculture
Improved with plastic film, overcome have a single function, additive migration is too fast, the service life is short, intensity is low etc. defects, have become solution
Certainly agricultural plastic film industry development and expansion chamber planting area critical issue urgently to be solved.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of preparation method and applications of agricultural plastic film, the party
Method is lauric acid diethyl amide, tributyl 2-acetylcitrate will to be added in high temperature after carbon black, calcium stearate, lanthanum hexaboride grinding
Under stir to obtain mixture A；Chlorinated polyether, Sodium Polyacrylate will be added again after epoxy resin, high density polyethylene (HDPE) ultrasonic disperse
It is ultrasonically treated to obtain mixture B；Again by mixture A and B heating stirring in a kettle, polyethylene-methyl propylene is added after adjusting pH
Acid glycidyl ester, plant fiber starch continue heating stirring；Then by the modified mixture of obtained acid heat and plasticizer, anti-ageing
Agent is kneaded, then the circular port die head extrusion-blown modling through double screw extruder, traction cooling, obtains plastic film.Preparation
Made of plastic film, turn light efficiency and service life be significantly increased, as agriculture greenhouse film have good application
Prospect.
Technical solution: to solve the above-mentioned problems, the invention discloses a kind of preparation method of agricultural plastic film, by with
Lower step composition:
(1) 8~10 parts of carbon black, 4~5 parts of calcium stearate, 2~4 parts of lanthanum hexaboride are ground respectively, is closed after the completion of to be ground
And abrasive, 18~22 parts of lauric acid diethyl amide, 15~20 parts of tributyl 2-acetylcitrate are added, it is common that mixing is added
In machine, is stirred 15~20 minutes at 95~105 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse will be carried out in 35~45 parts of 50~60 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines, surpassed
Acoustic power is 250~300W, and the ultrasonic disperse time is 20~30 minutes, and ultrasonic disperse temperature is 90~110 DEG C, is then added again
Enter 16~20 parts of chlorinated polyether, 12~14 parts of Sodium Polyacrylate, adjustment ultrasonic power is 350~380W, ultrasonic disperse time
It is 50~60 minutes, ultrasonic disperse temperature is 120~130 DEG C, and mixture B is obtained after natural cooling；
(3) mixture A and mixture B is added in reaction kettle, is stirred 60~80 minutes in 85~95 DEG C, then with 0.1mol/L's
The pH of mixture is adjusted to 4.5~5.5 by hydrochloric acid solution, subsequent 5~9 parts of polyethylene methacrylic acid ethylene oxidic ester of addition,
3~5 parts of plant fiber starch are stirred to react 220~280 minutes at same temperature, obtain the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 150~155 DEG C,
1~3 part of plasticizer, 1~3 part of age resister is added after heat preservation 20~30 minutes, under 150~250 revs/min of stirring rate
It is kneaded 40~50 minutes, obtains whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 32~38, passes through the circular mouth mold of double screw extruder
Head extrusion-blown modling, traction cooling, obtain plastic film.
Further, the grinding in the step (1) is carried out in screw mills, and material to be ground is in grinding pot
Filling rate is 60~80%；Grinder frequency converter frequency is 30~40Hz, and milling time is 4~6 hours.
Further, the plasticizer in the step (4) is selected from repefral, tricresyl phosphate, epoxy acetyl
Any one in linolenic acid methyl esters.
Further, the age resister in the step (4) is selected from phenylenediamine, 2-mercaptobenzimidazole, thio-2 acid 18
Any one in ester.
Further, in the step (5) double screw extruder processing temperature are as follows: 170 DEG C of area's temperature, two area's temperature are
195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 400~450 revs/min of kinds.
At the same time, the answering as agriculture greenhouse film the invention also discloses agricultural plastic film made from above-mentioned preparation method
With.
Compared with prior art, the present invention has the advantages that:
(1) preparation method of agricultural plastic film of the invention is laurel will to be added after carbon black, calcium stearate, lanthanum hexaboride grinding
Sour diglycollic amide, tributyl 2-acetylcitrate stir to obtain mixture A at high temperature；Epoxy resin, high density polyethylene (HDPE) are surpassed
Chlorinated polyether is added after sound dispersion, Sodium Polyacrylate is ultrasonically treated to obtain mixture B again；Again in a kettle by mixture A and B
Polyethylene methacrylic acid ethylene oxidic ester, plant fiber starch continuation heating stirring is added after adjusting pH in heating stirring；Then
The modified mixture of obtained acid heat is kneaded with plasticizer, age resister, then the circular port die head through double screw extruder
Extrusion-blown modling, traction cooling, obtain plastic film.The plastic film being prepared turns light efficiency and service life and has aobvious
It writes and improves, have a good application prospect as agriculture greenhouse film.
(2) present invention employs the originals such as tributyl 2-acetylcitrate, chlorinated polyether, polyethylene methacrylic acid ethylene oxidic ester
Material participation prepares agricultural plastic film, effective performance boost has been carried out to plastic film, although these materials are not answered for the first time
It is aided with corresponding processing mode, to the plastics being finally prepared after amount combination in plastic film, but according to a certain ratio
Film brings increasing substantially in service performance, this is never to report in previous research, for realizing this hair
Bright technical effect plays the role of conclusive.
Specific embodiment
Embodiment 1
(1) 8 parts of carbon black, 4 parts of calcium stearate, 2 parts of lanthanum hexaboride are ground respectively, grinding be in screw mills into
Row, filling rate of the material to be ground in grinding pot are 60%；Grinder frequency converter frequency is 30Hz, and milling time is 4 hours,
Merge abrasive after the completion of to be ground, adds 18 parts of lauric acid diethyl amide, 15 parts of tributyl 2-acetylcitrate, it is common to add
Enter in mixing machine, is stirred 15 minutes at 95 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 35 parts of 50 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 250W, the ultrasonic disperse time is 20 minutes, and ultrasonic disperse temperature is 90 DEG C, then adds 16 parts of chlorinated polyether, polypropylene
12 parts of sour sodium, adjustment ultrasonic power are 350W, and the ultrasonic disperse time is 50 minutes, and ultrasonic disperse temperature is 120 DEG C, to nature
Mixture B is obtained after cooling；
(3) mixture A and mixture B are added in reaction kettle, are stirred 60 minutes in 85 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 4.5,5 parts of polyethylene methacrylic acid ethylene oxidic ester, 3 parts of plant fiber starch is then added
It is stirred to react at same temperature 220 minutes, obtains the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 150 DEG C, heat preservation
1 part of repefral, 1 part of phenylenediamine are added after twenty minutes, is kneaded 40 minutes under 150 revs/min of stirring rate,
Obtain whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 32, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 400 revs/min of kinds.
Embodiment 2
(1) 9 parts of carbon black, 4.5 parts of calcium stearate, 3 parts of lanthanum hexaboride are ground respectively, grinding is in screw mills
It carries out, filling rate of the material to be ground in grinding pot is 70%；Grinder frequency converter frequency is 35Hz, and milling time is 5 small
When, merge abrasive after the completion of to be ground, add 20 parts of lauric acid diethyl amide, 17.5 parts of tributyl 2-acetylcitrate,
It is added to the mixer jointly, is stirred 17.5 minutes at 100 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 40 parts of 55 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 275W, the ultrasonic disperse time is 25 minutes, and ultrasonic disperse temperature is 100 DEG C, then adds 18 parts of chlorinated polyether, polypropylene
13 parts of sour sodium, adjustment ultrasonic power are 365W, and the ultrasonic disperse time is 55 minutes, and ultrasonic disperse temperature is 125 DEG C, to nature
Mixture B is obtained after cooling；
(3) mixture A and mixture B are added in reaction kettle, are stirred 70 minutes in 90 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 5, be then added 7 parts of polyethylene methacrylic acid ethylene oxidic ester, 4 parts of plant fiber starch in
It is stirred to react 250 minutes at same temperature, obtains the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 152.5 DEG C, is protected
2 parts of tricresyl phosphate, 2 parts of 2-mercaptobenzimidazole is added in temperature after 25 minutes, be kneaded under 200 revs/min of stirring rate
45 minutes, obtain whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 35, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 425 revs/min of kinds.
Embodiment 3
(1) 10 parts of carbon black, 5 parts of calcium stearate, 4 parts of lanthanum hexaboride are ground respectively, grinding is in screw mills
It carries out, filling rate of the material to be ground in grinding pot is 80%；Grinder frequency converter frequency is 40Hz, and milling time is 6 small
When, merge abrasive after the completion of to be ground, add 22 parts of lauric acid diethyl amide, 20 parts of tributyl 2-acetylcitrate, altogether
With being added to the mixer, is stirred 20 minutes at 105 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 45 parts of 60 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 300W, the ultrasonic disperse time is 30 minutes, and ultrasonic disperse temperature is 110 DEG C, then adds 20 parts of chlorinated polyether, polypropylene
14 parts of sour sodium, adjustment ultrasonic power are 380W, and the ultrasonic disperse time is 60 minutes, and ultrasonic disperse temperature is 130 DEG C, to nature
Mixture B is obtained after cooling；
(3) mixture A and mixture B are added in reaction kettle, are stirred 80 minutes in 95 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 5.5,9 parts of polyethylene methacrylic acid ethylene oxidic ester, 5 parts of plant fiber starch is then added
It is stirred to react at same temperature 280 minutes, obtains the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 155 DEG C, heat preservation
3 parts of epoxy acetyl linolenic acid methyl esters, 3 parts of thio-2 acid octadecyl ester are added after 30 minutes, in 250 revs/min of stirring speed
It is kneaded 50 minutes under rate, obtains whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 38, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 450 revs/min of kinds.
Comparative example 1
(1) 9 parts of carbon black, 4.5 parts of calcium stearate, 3 parts of lanthanum hexaboride are ground respectively, grinding is in screw mills
It carries out, filling rate of the material to be ground in grinding pot is 70%；Grinder frequency converter frequency is 35Hz, and milling time is 5 small
When, merge abrasive after the completion of to be ground, adds 20 parts of lauric acid diethyl amide, be added to the mixer jointly, at 100 DEG C
Lower stirring 17.5 minutes, obtains mixture A after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 40 parts of 55 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 275W, the ultrasonic disperse time is 25 minutes, and ultrasonic disperse temperature is 100 DEG C, then adds 18 parts of chlorinated polyether, polypropylene
13 parts of sour sodium, adjustment ultrasonic power are 365W, and the ultrasonic disperse time is 55 minutes, and ultrasonic disperse temperature is 125 DEG C, to nature
Mixture B is obtained after cooling；
(3) mixture A and mixture B are added in reaction kettle, are stirred 70 minutes in 90 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 5, be then added 7 parts of polyethylene methacrylic acid ethylene oxidic ester, 4 parts of plant fiber starch in
It is stirred to react 250 minutes at same temperature, obtains the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 152.5 DEG C, is protected
2 parts of tricresyl phosphate, 2 parts of 2-mercaptobenzimidazole is added in temperature after 25 minutes, be kneaded under 200 revs/min of stirring rate
45 minutes, obtain whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 35, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 425 revs/min of kinds.
Comparative example 2
(1) 9 parts of carbon black, 4.5 parts of calcium stearate, 3 parts of lanthanum hexaboride are ground respectively, grinding is in screw mills
It carries out, filling rate of the material to be ground in grinding pot is 70%；Grinder frequency converter frequency is 35Hz, and milling time is 5 small
When, merge abrasive after the completion of to be ground, add 20 parts of lauric acid diethyl amide, 17.5 parts of tributyl 2-acetylcitrate,
It is added to the mixer jointly, is stirred 17.5 minutes at 100 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 40 parts of 55 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 275W, the ultrasonic disperse time is 25 minutes, and ultrasonic disperse temperature is 100 DEG C, then adds 13 parts of Sodium Polyacrylate, adjustment
Ultrasonic power is 365W, and the ultrasonic disperse time is 55 minutes, and ultrasonic disperse temperature is 125 DEG C, is mixed after natural cooling
Close material B；
(3) mixture A and mixture B are added in reaction kettle, are stirred 70 minutes in 90 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 5, be then added 7 parts of polyethylene methacrylic acid ethylene oxidic ester, 4 parts of plant fiber starch in
It is stirred to react 250 minutes at same temperature, obtains the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 152.5 DEG C, is protected
2 parts of tricresyl phosphate, 2 parts of 2-mercaptobenzimidazole is added in temperature after 25 minutes, be kneaded under 200 revs/min of stirring rate
45 minutes, obtain whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 35, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 425 revs/min of kinds.
Comparative example 3
(1) 9 parts of carbon black, 4.5 parts of calcium stearate, 3 parts of lanthanum hexaboride are ground respectively, grinding is in screw mills
It carries out, filling rate of the material to be ground in grinding pot is 70%；Grinder frequency converter frequency is 35Hz, and milling time is 5 small
When, merge abrasive after the completion of to be ground, add 20 parts of lauric acid diethyl amide, 17.5 parts of tributyl 2-acetylcitrate,
It is added to the mixer jointly, is stirred 17.5 minutes at 100 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse, ultrasonic power will be carried out in 40 parts of 55 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines
For 275W, the ultrasonic disperse time is 25 minutes, and ultrasonic disperse temperature is 100 DEG C, then adds 18 parts of chlorinated polyether, polypropylene
13 parts of sour sodium, adjustment ultrasonic power are 365W, and the ultrasonic disperse time is 55 minutes, and ultrasonic disperse temperature is 125 DEG C, to nature
Mixture B is obtained after cooling；
(3) mixture A and mixture B are added in reaction kettle, are stirred 70 minutes in 90 DEG C, then with the hydrochloric acid solution of 0.1mol/L
The pH of mixture is adjusted to 5, then 4 parts of plant fiber starch is added and is stirred to react at same temperature 250 minutes, obtain acid heat
Modified mixture；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 152.5 DEG C, is protected
2 parts of tricresyl phosphate, 2 parts of 2-mercaptobenzimidazole is added in temperature after 25 minutes, be kneaded under 200 revs/min of stirring rate
45 minutes, obtain whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 35, is squeezed by the circular port die head of double screw extruder
It is blow molded out, draws cooling, obtain plastic film, the processing temperature of double screw extruder are as follows: 170 DEG C of area's temperature, two area's temperature
It is 195 DEG C, three area's temperature are 205 DEG C, and four area's temperature are 220 DEG C, and engine speed is 425 revs/min of kinds.
The plastic film obtained of embodiment 1-3 and comparative example 1-3 is turned according to industry traditional test methods respectively
The test of light efficiency and service life test, test result are as shown in table 1.
Table 1
The preparation method of agricultural plastic film of the invention is the moon will to be added after carbon black, calcium stearate, lanthanum hexaboride grinding
Cinnamic acid diglycollic amide, tributyl 2-acetylcitrate stir to obtain mixture A at high temperature；By epoxy resin, high density polyethylene (HDPE)
Chlorinated polyether is added after ultrasonic disperse, Sodium Polyacrylate is ultrasonically treated to obtain mixture B again；Again by mixture A and B in reaction kettle
Polyethylene methacrylic acid ethylene oxidic ester, plant fiber starch continuation heating stirring is added after adjusting pH in middle heating stirring；With
The modified mixture of obtained acid heat is kneaded with plasticizer, age resister afterwards, then the circular mouth mold through double screw extruder
Head extrusion-blown modling, traction cooling, obtain plastic film.The plastic film being prepared, turning light efficiency and service life has
It significantly improves, has a good application prospect as agriculture greenhouse film.Also, present invention employs tributyl 2-acetylcitrate,
The raw materials participations such as chlorinated polyether, polyethylene methacrylic acid ethylene oxidic ester prepare agricultural plastic film, carry out to plastic film
Effective performance boost, although these materials are not applied in plastic film for the first time, according to a certain ratio after amount combination,
Be aided with corresponding processing mode, brought increasing substantially in service performance to the plastic film being finally prepared, this
It is never to report in previous research, for realizing that it is conclusive that technical effect of the invention plays the role of.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (6)
1. a kind of preparation method of agricultural plastic film, which is characterized in that comprise the steps of:
(1) 8~10 parts of carbon black, 4~5 parts of calcium stearate, 2~4 parts of lanthanum hexaboride are ground respectively, is closed after the completion of to be ground
And abrasive, 18~22 parts of lauric acid diethyl amide, 15~20 parts of tributyl 2-acetylcitrate are added, it is common that mixing is added
In machine, is stirred 15~20 minutes at 95~105 DEG C, mixture A is obtained after natural cooling；
(2) ultrasonic disperse will be carried out in 35~45 parts of 50~60 parts of epoxy resin, high density polyethylene (HDPE) addition ultrasonic disperse machines, surpassed
Acoustic power is 250~300W, and the ultrasonic disperse time is 20~30 minutes, and ultrasonic disperse temperature is 90~110 DEG C, is then added again
Enter 16~20 parts of chlorinated polyether, 12~14 parts of Sodium Polyacrylate, adjustment ultrasonic power is 350~380W, ultrasonic disperse time
It is 50~60 minutes, ultrasonic disperse temperature is 120~130 DEG C, and mixture B is obtained after natural cooling；
(3) mixture A and mixture B is added in reaction kettle, is stirred 60~80 minutes in 85~95 DEG C, then with 0.1mol/L's
The pH of mixture is adjusted to 4.5~5.5 by hydrochloric acid solution, subsequent 5~9 parts of polyethylene methacrylic acid ethylene oxidic ester of addition,
3~5 parts of plant fiber starch are stirred to react 220~280 minutes at same temperature, obtain the modified mixture of acid heat；
(4) the modified mixture of acid heat is added in mixer, the temperature of mixer internal-response room is adjusted to 150~155 DEG C,
1~3 part of plasticizer, 1~3 part of age resister is added after heat preservation 20~30 minutes, under 150~250 revs/min of stirring rate
It is kneaded 40~50 minutes, obtains whole mixing；
(5) whole mixing is added in the double screw extruder that draw ratio is 32~38, passes through the circular mouth mold of double screw extruder
Head extrusion-blown modling, traction cooling, obtain plastic film.
2. the preparation method of agricultural plastic film according to claim 1, which is characterized in that grinding in the step (1)
Mill is carried out in screw mills, and filling rate of the material to be ground in grinding pot is 60~80%；Grinder frequency converter
Frequency is 30~40Hz, and milling time is 4~6 hours.
3. the preparation method of agricultural plastic film according to claim 1, which is characterized in that the increasing in the step (4)
Mould any one of agent in repefral, tricresyl phosphate, epoxy acetyl linolenic acid methyl esters.
4. the preparation method of agricultural plastic film according to claim 1, which is characterized in that anti-in the step (4)
Any one of aging agent in phenylenediamine, 2-mercaptobenzimidazole, thio-2 acid octadecyl ester.
5. the preparation method of agricultural plastic film according to claim 1, which is characterized in that double spiral shells in the step (5)
The processing temperature of bar extruder are as follows: 170 DEG C of area's temperature, two area's temperature are 195 DEG C, and three area's temperature are 205 DEG C, and four area's temperature are
220 DEG C, engine speed is 400~450 revs/min of kinds.
6. agricultural plastic film answering as agriculture greenhouse film made from any one of -5 preparation methods according to claim 1
With.
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| CN201810930975.2A CN109054303A (en) | 2018-08-15 | 2018-08-15 | A kind of preparation method and applications of agricultural plastic film |
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| CN115304805A (en) * | 2022-08-16 | 2022-11-08 | 青岛科技大学 | Preparation method of agricultural film with temperature adjusting function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759886A (en) * | 2017-11-24 | 2018-03-06 | 马鞍山松鹤信息科技有限公司 | A kind of greenhouse gardening dedicated film and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759886A (en) * | 2017-11-24 | 2018-03-06 | 马鞍山松鹤信息科技有限公司 | A kind of greenhouse gardening dedicated film and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304805A (en) * | 2022-08-16 | 2022-11-08 | 青岛科技大学 | Preparation method of agricultural film with temperature adjusting function |
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