CN105330954B - A kind of agricultural mulching synthesis weather-proof resin concentrates and preparation method thereof - Google Patents
A kind of agricultural mulching synthesis weather-proof resin concentrates and preparation method thereof Download PDFInfo
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
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Abstract
The present invention relates to film material field, a kind of agricultural mulching synthesis weather-proof resin concentrates and preparation method thereof are disclosed, is formulated and is：45 65 parts of linear low density polyethylene (LLDPE) powders, 15 25 parts of low density polyethylene (LDPE) powders, 48 parts of high density polyethylene (HDPE) powders, 12 parts of antioxidant, 0.5 1 parts of light stabilizers, 0.5 1 parts of ultra-violet absorbers, 46 parts of acrylic acid, 48 parts of sodium hydrate aqueous solutions, 0.5 1.5 parts of sepiolite powders, 0.5 1.5 parts of konjaku glucomannans, 0.02 0.04 parts of potassium peroxydisulfates, 0.04 0.06 parts of aluminium chloride, 0.01 0.03 parts of N, N ' methylene-bisacrylamides, 0.1 0.3 parts of sodium acid carbonates, 0.5 1.5 parts of sodium carboxymethylcelluloses, 12 parts of Tissuemat Es.The present invention has preferable fast light, heat resistance and outstanding tensile property.It can repeatedly reclaim and use, service life is long.
Description
Technical field
The present invention relates to film material field, more particularly to a kind of agricultural mulching synthesis weather-proof resin concentrates and its preparation
Method.
Background technology
China is traditional large agricultural country, there is huge demand for agricultural mulching every year.But at present big
Most mulch film weatherabilities is poor, after being subjected to exposing to the weather for a long time, drenching with rain, easy aging, rupture.
The Chinese invention patent of Application No. 201510186686.2 discloses a kind of plastic film of good weatherability properties, its
It is prepared from the following raw materials in parts by weight：EPDM2-8 parts, 5-9 parts of white oil, 7-10 parts of polyvinyl chloride, carboxymethyl fatty amine 1-5
Part, 4-11 parts of vinyl acetate, the 9-14 parts of stearic acid, 1-4 parts of nanometer Cr-W alloyed powders, 4-9 parts of aluminum-based layered nanometer material, oxygen
Change 1-3 parts of chromium, 2-6 parts of potassium titanate crystal whisker, 7-10 parts of methacrylate, 1-3 parts of organotin, 2-3 parts of coupling agent.The invention
Plastic film, with good weatherability, and intensity is preferably, is not susceptible to tear phenomenon, while pollution is small.
But the one side cost of the mulch film of foregoing invention is higher, and secondary utilization can not be reclaimed.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of agricultural mulching synthesis weather-proof resin concentrates and its system
Preparation Method.The agricultural mulching synthesis of the present invention has preferable fast light, heat resistance and outstanding tension with weather-proof resin concentrates
Performance.It can repeatedly reclaim and use, service life is long.
The present invention concrete technical scheme be：Weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, are formulated as following weight
The material of part：45-65 parts of linear low density polyethylene (LLDPE) powders, 15-25 parts of low density polyethylene (LDPE) powders, 4-8 parts of high-density polyethylenes
Alkene powder, 1-2 parts of antioxidant, 0.5-1 parts of light stabilizers, 0.5-1 parts of ultra-violet absorbers, 4-6 parts of acrylic acid, 4-8 parts of hydrogen-oxygens
Change sodium water solution, 0.5-1.5 parts of sepiolite powders, 0.5-1.5 parts of konjaku glucomannans, 0.02-0.04 parts of potassium peroxydisulfates, 0.04-
0.06 part of aluminium chloride, 0.01-0.03 parts of N, N ' methylene-bisacrylamides, 0.1-0.3 parts of sodium acid carbonates, 0.5-1.5 parts of carboxylic first
Base sodium cellulosate, 1-2 parts of Tissuemat Es.
In the formula that the technical program agricultural mulching synthesizes with weather-proof resin concentrates, with linear low density polyethylene (LLDPE) powder
Material, low density polyethylene (LDPE) powder and high density polyethylene (HDPE) powder as matrix, wherein different densities and structure polyethylene powder
Collocation, can make masterbatch that there is ideal softening temperature, melting temperature, while make after mulch film is prepared into mulch film have compared with
Good tensile strength, toughness and weatherability.Antioxidant, light stabilizer, ultra-violet absorber can improve the anti-aging of mulch film
Energy, light resistance and heat resistance.Acrylic acid is together combined with sepiolite powder, konjaku glucomannan, sodium carboxymethylcellulose so that
There is strongly moisture adsorption and releasing ability after composite shaping, and absorbent capacity is big, and itself hundreds times of weight can be absorbed rapidly
Deionized water and decades of times weight saliferous moisture, additionally it is possible to carry out suction automatically according to the psychrometric difference of own material and environment and put
It is wet.
As the further preferred of the technical program, the antioxidant be 2,6- three-level butyl -4- methylphenols, it is double (3,
5- three-level butyl -4- hydroxy phenyls) thioether, double Lauryl Alcohol esters, double ten four carbon alcohols esters, one kind or many in double octadecanol esters
Kind.
As the further preferred of the technical program, the light stabilizer is 4- benzoyloxys -2,2,6,6- tetramethyls
One or more in piperidines, HMPA, 2,4,6- tri- (2 ' n-butoxyphenyl) -1,3,5- triazines.
As the further preferred of the technical program, the ultra-violet absorber is septichen phenyl ester, 2,4- bis-
One or more in dihydroxy benaophenonel, ESCALOL 567.
As the further preferred of the technical program, the concentration of the sodium hydrate aqueous solution is 5-10wt%.Hydroxide
Sodium water solution has following effect in formula：One is anti-as raw material and acrylic acid generation when preparing Sodium Polyacrylate
Should；Two be the neutralization reagent as reaction system, makes reaction product in neutrality；Three be to be prepared into Sodium Polyacrylate answering for main body
After condensation material, the solvent of Sodium Polyacrylate, the fused degree of increase Sodium Polyacrylate and other raw materials are used as.
As the further preferred of the technical program, the agricultural mulching synthesis is also wrapped with the formula of weather-proof resin concentrates
Include 0.5-1.5 parts of attapulgites and 0.5-1.5 parts of oleic acid.
In formula, oleic acid is supported on attapulgite, stability is strong；In addition, attapulgite can strengthen mulch film
Intensity, and oleic acid can increase the oxygen content of water body after water is dissolved in, after the resin concentrates of the present invention are prepared into mulch film, on ground
Film is absorbed after large quantity of moisture, and oleic acid moiety is dissolved, oxygen content increase in moisture, and mulch film is to the same of soil permeability moisture
When, also provide certain oxygen to the crop root system in soil, be conducive to respiration, promote root growth, solve by
The problem of covering with ground sheeting, mulch film lower surface anoxic.
Present invention also offers a kind of agricultural mulching synthesis preparation method of weather-proof resin concentrates, enter according to the following steps
OK：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and stirs anti-at 60-70 DEG C
Answer 15-25min.The mixing material based on Sodium Polyacrylate is made in step a.
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues at 50-60 DEG C
Lower stirring reaction, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 0.5-1h,
Then it is 90-95wt% reaction product to be taken out and dried to solid content.Add after sodium acid carbonate, sodium acid carbonate is given birth to by thermal decomposition
Aerogenesis body, so as to generate substantial amounts of miniature hole in gel resin, can greatly improve and be made after water absorption capacity, step b
Gel composite based on Sodium Polyacrylate.
C, the reaction product by step b, linear low density polyethylene (LLDPE) powder, low density polyethylene (LDPE) powder, high-density polyethylene
Alkene powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E together carry out spice, are then added to plastic granulating
Priority is finished product after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying in machine；The institute wherein in extrusion
The temperature control of plastic granulating machine is stated at 130-280 DEG C.
The invention provides another agricultural mulching synthesis preparation method of weather-proof resin concentrates, enter according to the following steps
OK：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and stirs anti-at 60-70 DEG C
Answer 15-25min.
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues at 50-60 DEG C
Lower stirring reaction, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 0.5-1h,
Then it is 90-95wt% reaction product to be taken out and dried to solid content.
C, by attapulgite at 500 DEG C thermal activation 3-5h, the attapulgite after thermal activation then is added into concentration is
40-60min is stirred at 50-60 DEG C in 50wt% silane coupler ethanol solution, by attapulgite after then filtering
Drying, obtains attapulgite modified, is mixed attapulgite modified with oleic acid, the attapulgite for being loaded with oleic acid is made.
D, the reaction product by step b, are loaded with the attapulgite of oleic acid, linear low density polyethylene (LLDPE) powder, low-density
Polyethylene powder, high density polyethylene (HDPE) powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E are together mixed
Material, is then added in plastic granulator and is successively made into after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying
Product；The temperature control of plastic granulating machine is at 130-280 DEG C wherein described in extrusion.
It is compared with the prior art, the beneficial effects of the invention are as follows：Weather-proof resin concentrates are used in the agricultural mulching synthesis of the present invention
With preferable fast light, heat resistance and outstanding tensile property.It can repeatedly reclaim and use.
In addition, the mulch film produced with water conservation masterbatch of the present invention, it is capable of the deionized water of hundreds times of absorptance itself weight rapidly
The saliferous moisture of decades of times, create can quickly absorb, store, slowly release moisture and nutrient " small reservoir ", Neng Gouyou
The deep percolation of effect reduction irrigation water (rainwater) and fertilizer, improves water and fertilizer utilization, strengthens the water-retaining property of soil, controls the soil water
The evaporation divided, to meet the growth needs of plant；It can also improve soil texture, increase soil activation, reduce soil plate with
And promote plant root growth development etc..
Embodiment
With reference to embodiment, the invention will be further described.The poly- second of linear, low density described in following examples
Alkene powder, low density polyethylene (LDPE) powder, high density polyethylene (HDPE) powder is product purchased in market, wherein linear low density polyethylene (LLDPE) powder
Material, the relative density of low density polyethylene (LDPE) powder is between 0.910-0.925, and the relative density of high density polyethylene (HDPE) powder exists
Between 0.941-0.965.
Embodiment 1
Weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, are formulated as the material of following parts by weight：55 parts of linear, low densities
Polyethylene powder, 20 parts of low density polyethylene (LDPE) powders, 6 parts of high density polyethylene (HDPE) powders, 1 part of 2,6- three-level butyl -4- methylbenzene
Phenol, 0.5 part of double Lauryl Alcohol ester, 0.5 part of 4- benzoyloxy -2,2,6,6- tetramethyl piperidines, 0.5 part of hexamethyl phosphinylidyne three
Amine, 0.5 part of septichen phenyl ester, 0.5 part of 2,4-DihydroxyBenzophenone, 5 parts of acrylic acid, 6 parts of concentration are 7.5wt%'s
Sodium hydrate aqueous solution, 1 part of sepiolite powder, 1 part of konjaku glucomannan, 0.03 part of potassium peroxydisulfate, 0.05 part of aluminium chloride, 0.02 part
N, N ' methylene-bisacrylamide, 0.2 part of sodium acid carbonate, 1 part of sodium carboxymethylcellulose, 1.5 parts of Tissuemat Es.
A kind of agricultural mulching synthesis preparation method of weather-proof resin concentrates, is carried out according to the following steps：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and the stirring reaction at 65 DEG C
20min。
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues to stir at 55 DEG C
Reaction is mixed, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 0.75h, then
It is 90-95wt% that reaction product, which is taken out and dried to solid content,.
C, the reaction product by step b, linear low density polyethylene (LLDPE) powder, low density polyethylene (LDPE) powder, high-density polyethylene
Alkene powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E together carry out spice, are then added to plastic granulating
Priority is finished product after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying in machine；The institute wherein in extrusion
The temperature control of plastic granulating machine is stated at 220 DEG C.
Mulch film prepared by the weather-proof resin concentrates of the present embodiment is in the physical and mechanical properties and retention rate using different time
Result of the test is：
After 4 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 29N/30N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 92%/93%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 425%/455%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 91%/92%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.1N/1.3N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 94%/95%.
After 8 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 18N/20N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 79%/84%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 370%/380%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 81%/83%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.92N/1.01N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 89%/87%.
After 12 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 14N/16N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 65%/68%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 305%/295%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 67%/72%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.74N/0.69N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 68%/70%.
Embodiment 2
Weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, are formulated as the material of following parts by weight：65 parts of linear, low densities
Polyethylene powder, 15 parts of low density polyethylene (LDPE) powders, 4 parts of high density polyethylene (HDPE) powders, 1 part of double (3,5- three-level butyl -4- hydroxyl
Phenyl) thioether, 0.5 part of double octadecanol ester, 0.5 part 2,4,6- tri- (2 ' n-butoxyphenyl) -1,3,5-triazines, 0.5 part of neighbour
MPHB, 4 parts of acrylic acid, the sodium hydrate aqueous solution that 4 parts of concentration are 10wt%, 0.5 part of sepiolite powder, 0.5 part
Konjaku glucomannan, 0.02 part of potassium peroxydisulfate, 0.04 part of aluminium chloride, 0.01 part of N, N ' methylene-bisacrylamides, 0.1 part of carbonic acid
Hydrogen sodium, 0.5 part of sodium carboxymethylcellulose, 1 part of Tissuemat E, 0.5 part of attapulgite and 0.5 part of oleic acid.
A kind of agricultural mulching synthesis preparation method of weather-proof resin concentrates, is carried out according to the following steps：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and the stirring reaction at 60 DEG C
25min。
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues to stir at 50 DEG C
Reaction is mixed, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 1h, then will be anti-
It is 90-95wt% to answer product to take out and dry to solid content.
C, by attapulgite at 500 DEG C thermal activation 3h, the attapulgite after thermal activation then is added into concentration is
60min is stirred at 50 DEG C in 50wt% silane coupler ethanol solution, attapulgite is dried after then filtering, obtained
To attapulgite modified, mixed attapulgite modified with oleic acid, the attapulgite for being loaded with oleic acid is made.
D, the reaction product by step b, are loaded with the attapulgite of oleic acid, linear low density polyethylene (LLDPE) powder, low-density
Polyethylene powder, high density polyethylene (HDPE) powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E are together mixed
Material, is then added in plastic granulator and is successively made into after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying
Product；The temperature control of plastic granulating machine is at 130 DEG C wherein described in extrusion.
Mulch film prepared by the weather-proof resin concentrates of the present embodiment is in the physical and mechanical properties and retention rate using different time
Result of the test is：
After 4 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 28N/30N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 91%/93%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 428%/463%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 91%/92%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.05N/1.27N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 95%/95%.
After 8 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 17N/19N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 78%/83%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 366%/378%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.90N/1.00N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/87%.
After 12 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 14N/16N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 65%/68%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 310%/295%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 68%/72%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.72N/0.68N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 68%/70%.
Embodiment 3
Weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, are formulated as the material of following parts by weight：45 parts of linear, low densities
Polyethylene powder, 25 parts of low density polyethylene (LDPE) powders, 8 parts of high density polyethylene (HDPE) powders, 1 part of double (3,5- three-level butyl -4- hydroxyl
Phenyl) thioether, 0.5 part of double Lauryl Alcohol ester, 0.5 part of double octadecanol ester, 0.5 part of HMPA, 0.5 part 2,4,6-
Three (2 ' n-butoxyphenyl) -1,3,5-triazines, 0.5 part of 2,4-DihydroxyBenzophenone, 0.5 part of 2- hydroxyl -4- methoxyl group two
Benzophenone, 6 parts of acrylic acid, the sodium hydrate aqueous solution that 8 parts of concentration are 5wt%, 1.5 parts of sepiolite powders, 1.5 parts of konjak portuguese gansu polyoses
Sugar, 0.04 part of potassium peroxydisulfate, 0.06 part of aluminium chloride, 0.03 part of N, N ' methylene-bisacrylamides, 0.3 part of sodium acid carbonate, 1.5 parts
Sodium carboxymethylcellulose, 2 parts of Tissuemat Es, 1.5 parts of attapulgites and 1.5 parts of oleic acid.
A kind of agricultural mulching synthesis preparation method of weather-proof resin concentrates, is carried out according to the following steps：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and the stirring reaction at 70 DEG C
15min。
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues to stir at 60 DEG C
Reaction is mixed, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 0.5h, then will
It is 90-95wt% that reaction product, which is taken out and dried to solid content,.
C, by attapulgite at 500 DEG C thermal activation 5h, the attapulgite after thermal activation then is added into concentration is
40min is stirred at 60 DEG C in 50wt% silane coupler ethanol solution, attapulgite is dried after then filtering, obtained
To attapulgite modified, mixed attapulgite modified with oleic acid, the attapulgite for being loaded with oleic acid is made.
D, the reaction product by step b, are loaded with the attapulgite of oleic acid, linear low density polyethylene (LLDPE) powder, low-density
Polyethylene powder, high density polyethylene (HDPE) powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E are together mixed
Material, is then added in plastic granulator and is successively made into after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying
Product；The temperature control of plastic granulating machine is at 280 DEG C wherein described in extrusion.
Mulch film prepared by the weather-proof resin concentrates of the present embodiment is in the physical and mechanical properties and retention rate using different time
Result of the test is：
After 4 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 27N/29N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 91%/92%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 405%/445%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 90%/91%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.0N/1.2N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 93%/94%.
After 8 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 17N/18N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 78%/83%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 362%/375%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.90N/0.98N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/86%.
After 12 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 14N/15N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 65%/67%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 303%/292%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 67%/72%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.70N/0.67N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 67%/69%.
Embodiment 4
Weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, are formulated as the material of following parts by weight：50 parts of linear, low densities
Polyethylene powder, 25 parts of low density polyethylene (LDPE) powders, 5 parts of high density polyethylene (HDPE) powders, 1 part of 2,6- three-level butyl -4- methylbenzene
Phenol, double (3,5- three-level butyl -4- hydroxy phenyls) thioethers, 1 part of HMPA, 1 part of 2- hydroxyl -4- methoxyl group hexichol first
Ketone, 5 parts of acrylic acid, the sodium hydrate aqueous solution that 5 parts of concentration are 6wt%, 0.5 part of sepiolite powder, 0.5 part of konjaku glucomannan,
0.02 part of potassium peroxydisulfate, 0.04 part of aluminium chloride, 0.01 part of N, N ' methylene-bisacrylamides, 0.1 part of sodium acid carbonate, 0.5 part of carboxylic
Sodium carboxymethylcellulose pyce, 1 part of Tissuemat E, 1 part of attapulgite and 1 part of oleic acid.
A kind of agricultural mulching synthesis preparation method of weather-proof resin concentrates, is carried out according to the following steps：
A, by proportioning weigh each material in the formula, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate,
Sodium carboxymethylcellulose, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and the stirring reaction at 70 DEG C
25min。
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues to stir at 60 DEG C
Reaction is mixed, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 1h, then will be anti-
It is 90-95wt% to answer product to take out and dry to solid content.
C, by attapulgite at 500 DEG C thermal activation 5h, the attapulgite after thermal activation then is added into concentration is
60min is stirred at 60 DEG C in 50wt% silane coupler ethanol solution, attapulgite is dried after then filtering, obtained
To attapulgite modified, mixed attapulgite modified with oleic acid, the attapulgite for being loaded with oleic acid is made.
D, the reaction product by step b, are loaded with the attapulgite of oleic acid, linear low density polyethylene (LLDPE) powder, low-density
Polyethylene powder, high density polyethylene (HDPE) powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E are together mixed
Material, is then added in plastic granulator and is successively made into after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying
Product；The temperature control of plastic granulating machine is at 250 DEG C wherein described in extrusion.
After 4 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 28N/29N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 91%/92%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 408%/447%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 90%/91%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.02N/1.18N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 93%/94%.
After 8 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 17N/19N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 78%/84%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 365%/374%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.89N/0.97N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/86%.
After 12 months,
Tensile load (vertical/horizontal) test value of mulch film is respectively 14N/16N；
Tensile load (vertical/horizontal) retention rate of mulch film is respectively 65%/68%；
Elongation at break (vertical/horizontal) test value of mulch film is respectively 307%/292%；
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 68%/72%；
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.70N/0.67N；
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 67%/69%.Raw materials used in the present invention, equipment,
Unless otherwise noted, it is the conventional raw material, equipment of this area；Method therefor in the present invention, is ability unless otherwise noted
The conventional method in domain.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
The protection domain of case.
Claims (4)
1. weather-proof resin concentrates are used in a kind of agricultural mulching synthesis, it is characterised in that be formulated as the material of following parts by weight：45-65 parts
Linear low density polyethylene (LLDPE) powder, 15-25 parts of low density polyethylene (LDPE) powders, 4-8 parts of high density polyethylene (HDPE) powders, 1-2 parts of antioxygens
Agent, 0.5-1 parts of light stabilizers, 0.5-1 parts of ultra-violet absorbers, 4-6 parts of acrylic acid, 4-8 parts of sodium hydrate aqueous solutions, 0.5-
1.5 parts of sepiolite powders, 0.5-1.5 parts of konjaku glucomannans, 0.02-0.04 parts of potassium peroxydisulfates, 0.04-0.06 parts of aluminium chloride,
0.01-0.03 parts of N, N ' methylene-bisacrylamides, 0.1-0.3 parts of sodium acid carbonates, 0.5-1.5 parts of sodium carboxymethylcelluloses, 1-2
Part Tissuemat E；0.5-1.5 parts of attapulgites and 0.5-1.5 parts of oleic acid；
The light stabilizer is 4- benzoyloxys -2,2,6,6- tetramethyl piperidines, HMPA, 2,4,6- tri- (2 '
N-butoxyphenyl) one or more in -1,3,5- triazines；
The ultra-violet absorber is septichen phenyl ester, 2,4 dihydroxyl benzophenone, 2- hydroxyl -4- methoxyl group hexichol
One or more in ketone.
2. weather-proof resin concentrates are used in agricultural mulching synthesis as claimed in claim 1, it is characterised in that the antioxidant is 2,6-
Three-level butyl -4- methylphenols, double (3,5- three-level butyl -4- hydroxy phenyls) thioethers, double Lauryl Alcohol esters, double ten four carbon alcohols
One or more in ester, double octadecanol esters.
3. weather-proof resin concentrates are used in agricultural mulching synthesis as claimed in claim 1, it is characterised in that the sodium hydroxide is water-soluble
The concentration of liquid is 5-10wt%.
4. the preparation method of the weather-proof resin concentrates of a kind of agricultural mulching synthesis as claimed in claim 1, it is characterised in that press
Following steps are carried out：
A, by proportioning each material in the formula is weighed, by acrylic acid, sepiolite powder, konjaku glucomannan, potassium peroxydisulfate, carboxylic first
Base sodium cellulosate, which is added in the reaction vessel equipped with sodium hydrate aqueous solution, to be well mixed and the stirring reaction at 60-70 DEG C
15-25min；
Addition aluminium chloride and N, N in b, the first backward reaction vessel ' methylene-bisacrylamide, continues to stir at 50-60 DEG C
Reaction is mixed, until reaction product adds sodium acid carbonate into reaction vessel when being in gel, continues stirring reaction 0.5-1h, then
It is 90-95wt% that reaction product, which is taken out and dried to solid content,；
C, by attapulgite at 500 DEG C thermal activation 3-5h, the attapulgite after thermal activation then is added into concentration is
40-60min is stirred at 50-60 DEG C in 50wt% silane coupler ethanol solution, by attapulgite after then filtering
Drying, obtains attapulgite modified, is mixed attapulgite modified with oleic acid, the attapulgite for being loaded with oleic acid is made；
D, the reaction product by step b, are loaded with the attapulgite of oleic acid, linear low density polyethylene (LLDPE) powder, low density polyethylene
Alkene powder, high density polyethylene (HDPE) powder, antioxidant, light stabilizer, ultra-violet absorber and Tissuemat E together carry out spice, so
After be added in plastic granulator the successively i.e. finished product after plasticizing, filtering, extrusion, wire drawing, cooling, cutting, drying；Its
In the plastic granulating machine described in extrusion temperature control at 130-280 DEG C.
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| CN115160677B (en) * | 2022-08-18 | 2023-04-25 | 甘肃宏鑫农业科技有限公司 | Agricultural mulching film for high-standard farmland and preparation method thereof |
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| CN1205346A (en) * | 1998-02-25 | 1999-01-20 | 李嘉琛 | Controllable light biological whole degradation plastic |
| KR100458042B1 (en) * | 2001-09-11 | 2004-11-26 | 호남석유화학 주식회사 | Biodegradable polyethylene resin composition containing starch and a method for preparation thereof |
| CN100443529C (en) * | 2006-10-20 | 2008-12-17 | 中国科学院长春应用化学研究所 | Multifunctional degradable liquid-state mulch film and its preparing method |
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| CN103159895A (en) * | 2011-12-16 | 2013-06-19 | 四川师范大学 | Preparation method of biodegradable and farm-oriented water-absorbing adhesive resin |
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