CN109845540A

CN109845540A - A kind of agricultural canopy film subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping

Info

Publication number: CN109845540A
Application number: CN201910132472.5A
Authority: CN
Inventors: 卞希惠; 魏玉强
Original assignee: Jiangsu Zhixin Plastic Technology Co Ltd
Current assignee: Jiangsu Zhixin Plastic Technology Co Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2019-06-07
Anticipated expiration: 2039-02-22
Also published as: CN109845540B

Abstract

The present invention relates to agricultural canopy film fields, and in particular to a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping.A kind of agricultural canopy film subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, the agricultural canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer.There is the agricultural canopy film that the present invention is prepared long-acting anti-dropping to subtract the ageing-resistant low temperature resistance of mist, it is good to be embodied in this agricultural canopy film anti-drop property, the water droplet of formation can be flowed down along film, the stream drop duration is long, quick heating, heat preservation is strong, effect of increasing production is obvious, weatherability and wind loading rating are strong, also there is preferable anti-fog function and light transmission, it can reduce or eliminate the fog in greenhouse, be conducive to the photosynthesis of crops, reduce corps diseases, suitable for various big, medium-sized arched shed and heliogreenhouse carry out the various leafy vegetables of Cultivation in Greenhouse and flowers, the overwintering cultivation of melon and fruit.

Description

A kind of agricultural canopy film subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping

Technical field

The invention belongs to agricultural canopy film field, more particularly it relates to a kind of, that there is long-acting anti-dropping to subtract mist is ageing-resistant The agricultural canopy film of low temperature resistance.

Background technique

Greenhouse is one of critical facility of modern agriculture, it change traditional cultivation method to natural conditions according to Rely.Effectively improve the yield and quality of crop on unit area, relative reduction production cost.Therefore greenhouse plantation Technology is gradually replacing in agricultural and planting industry traditional planting technology and is being accepted by people, and China's canopy film covers according to statistics Area is more than 16000km², canopy film year usage amount about 1500kt/a, the year amount of upgrading demand about 700kt, and be in cumulative year after year trend. A huge industry is formd.The raw material for producing agricultural canopy film is mainly polyvinyl resin, and common polythene canopy film makes With one layer of white reflection water droplet is agglomerated on middle canopy film inner surface, the transmission of light is affected；And water droplet drips, and increases in canopy Humidity makes crop that disease easily occur；Water droplet is dropped on crop, is also easily caused to rot, is caused the underproduction.Solving polyethylene green house film makes Problem of dripping in, generally use two methods: one is interior additive process, be exactly by with surface-active substance and poly- second Stream drop greenhouse film is made in olefine resin mixing blow molding, and hydrophilic one end moves to the surface of film, so that water droplet is become moisture film and reaches waterproof The effect of drop；Another kind is outer cladding process, and the surface that drip agent is coated to film is exactly made it have hydrophily, reaches anti-stream The effect of drop.

The stream drop fog dispersal lasting period that the stream drop of interior additive process preparation subtracts mist canopy film is short, cannot generally at 3~4 months or so Meet the growth needs of crops.Application type stream drop subtract mist canopy film stream drop fog dispersal the lasting period it is longer, generally at 8 months or more.Its The preparation method of use is directly to coat laminar flow drop on the canopy film surface of polyethylene to subtract mist agent, due to polyethylene and application type stream The polarity spectrum that drop subtracts between mist agent is very big, often there is the poor adhesive force of coating difficulty and coating and polyethylene surface, causes The canopy film stream drop fog dispersal lasting period is short, cannot still meet the requirements.Therefore, the present invention specifically addresses above-mentioned due to conventional drip agent Surface-active is relatively low to be caused the problem of can not playing the role of fog dispersal, while being solved due to auxiliary molecules such as drip agent and antifogging agents It constantly migrates to film surface and is lost with water droplet, to gradually lose stream drop fog dispersal function, cause the period short problem that works.

Summary of the invention

To solve the above-mentioned problems, first aspect of the present invention provide it is a kind of have long-acting anti-dropping subtract mist it is ageing-resistant resist it is low Warm nature can agricultural canopy film, the agricultural canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer from Interior one layer stacks gradually outward.

As a kind of perferred technical scheme, by weight, the agricultural canopy film includes: one layer 10~15 parts interior, interior Two layers 8~12 parts, it is 15~20 parts of middle layer, two layers 15~20 parts outer, one layer 20~30 parts outer.

As a kind of perferred technical scheme, by weight, described interior one layer includes: 20~30 parts of POE, 15~20 parts LLDPE-1,10~20 parts of LDPE-1,5~10 parts of ageing-resistant streams drip master batch.

As a kind of perferred technical scheme, by weight, described interior two layers include: 25~35 parts of POE, 10~15 parts MLLDPE-1,3~7 parts of ageing-resistant streams drip master batch.

As a kind of perferred technical scheme, by weight, the middle layer includes: 20~30 parts of EVA, 15~25 parts POE, 10~15 parts of LDPE-2,4~7 parts of heat preservation master batches.

As a kind of perferred technical scheme, by weight, described outer two layers include: 20~30 parts of mLLDPE-2,30 ~50 parts of POE, 30~40 parts of LLDPE-2,3~5 parts of anti-one's old mother's grains.

As a kind of perferred technical scheme, by weight, described outer one layer includes: 30~40 parts of mLLDPE-3,30 ~40 parts of POE, 10~20 parts of LLDPE-3,5~10 parts of anti-one's old mother's grains.

As a kind of perferred technical scheme, by weight, the ageing-resistant stream drop master batch includes: 10~20 parts LDPE, 0.5~1.5 part of anti-aging agent, 1~1.5 part of hindered amine light stabilizer, 1~3 part of function additive, 0.3~0.8 part of drip agent.

As a kind of perferred technical scheme, by weight, the heat preservation master batch include: 20~30 parts of LDPE, 10~ 15 parts of talcum powder, 3~5 parts of basic magnesium carbonates.

As a kind of perferred technical scheme, by weight, anti-one's old mother's grain includes: 20~30 parts of LLDPE, 0.5 ~1.5 parts of hindered amine light stabilizers, 1~3 part of composite antioxidant.

The utility model has the advantages that there is the agricultural canopy film being prepared using the present invention long-acting anti-dropping to subtract the ageing-resistant low temperature resistivity of mist Can, it is embodied in that this agricultural canopy film anti-drop property is good, the water droplet of formation can be flowed down along film, and the stream drop duration is long, and quick heating is protected Wen Qiang, effect of increasing production is obvious, and weatherability and wind loading rating are strong, also have preferable anti-fog function and light transmission, can reduce or The fog in greenhouse is eliminated, the photosynthesis of crops is conducive to, reduces corps diseases, is suitable for various large and medium-sized arched sheds And heliogreenhouse carries out the overwintering cultivation of the various leafy vegetables of Cultivation in Greenhouse and flowers, melon and fruit.

Specific embodiment

It is further clear, complete that the technical characteristic work in technical solution is provided to the present invention With reference to embodiment Description, not to the limitation of its protection scope.

Word " preferred ", " preferred " in the present invention etc. refer to, can provide in some cases certain beneficial to effect The embodiment of the present invention of fruit.However, other embodiments are also likely to be preferred under identical circumstances or in the case of other 's.In addition, do not imply that other embodiments are unavailable to the statement of one or more preferred embodiments, be also not intended to by Other embodiments exclude except the scope of the present invention.

In a preferred embodiment, by weight, the agricultural canopy film includes: one layer 10~15 parts interior, interior Two layers 8~12 parts, it is 15~20 parts of middle layer, two layers 15~20 parts outer, one layer 20~30 parts outer.

In a preferred embodiment, by weight, interior one layer of the present invention includes: 20~30 parts of POE, 15 ~20 parts of LLDPE-1,10~20 parts of LDPE-1,5~10 parts of ageing-resistant streams drip master batch.

(POE)

POE of the present invention is polyolefin elastomer, and molecular structure is similar to ethylene propylene diene rubber (EPDM), is had resistance to old The excellent properties such as change, resistance to ozone, resistant to chemical media, automobile industry, electric wire and cable jacket, in terms of all obtain Obtained extensive use.

The present invention is not particularly limited interior one layer of the POE, can be various POE commonly used in the art, It can be commercially available, such as the POE being available commercially includes but is not limited to buy from Tao Shi E.I.Du Pont Company, the trade mark is The product of 1881G or 8201.

(LLDPE-1)

LLDPE, that is, linear low density polyethylene of the present invention, be ethylene and a small amount of high alpha-olefin (such as butene-1, oneself Alkene -1, octene-1, tetramethyl amylene -1 etc.) under the action of catalyst, a kind of copolymer formed through high pressure or low-pressure polymerization.

LLDPE-1 preferred density of the present invention is 0.912~0.918g/cm³LLDPE, can be commercially available, Such as the LLDPE-1 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark is the product of FL201XV, density For 0.916g/cm³。

(LDPE-1)

LDPE, that is, low density polyethylene (LDPE) of the present invention is also known as high pressure polyethylene, is a kind of plastic material, it is suitble to thermoplastic The various moulding process of property processing and forming, molding processibility are good.

LDPE-1 preferred density of the present invention is 0.912~0.918g/cm³LDPE, can be commercially available, example The LDPE-1 being such as available commercially includes but is not limited to buy from Exxon Mobil, and the trade mark is the product of 350D65, and density is 0.917g/cm³。

(ageing-resistant stream drips master batch)

In a preferred embodiment, by weight, ageing-resistant stream drop master batch of the present invention includes: 10~20 Part LDPE, 0.5~1.5 part of anti-aging agent, 1~1.5 part of hindered amine light stabilizer, 1~3 part of function additive, 0.3~0.8 part of stream drop Agent.

LDPE

The present invention is not particularly limited the LDPE in the ageing-resistant stream drop master batch, can be commonly used in the art Various LDPE, can be commercially available, such as the LDPE being available commercially includes but is not limited to buy from Exxon Mobil, The trade mark is the product of LD171BA.

Anti-aging agent

Anti-aging agent of the present invention refers to the substance that can delay macromolecule chemical combination aging.Big multipotency inhibits oxidation, has The effect that can inhibit heat or light a bit, to extend the service life of product.It is generally divided into natural antiageing protective, physical antioxidant and change Learn anti-aging agent.By its effect can be divided into antioxidant, antiozonant and copper deactivator or be divided into discoloration and it is non-discolouring, stain and not It stains, heat-resisting or warping strength aging and the anti-aging agent for preventing the agings such as cracking.

It is of the present invention it is ageing-resistant stream drop master batch in anti-aging agent be selected from amines antioxidants, phenols (derivative) anti-aging agent, One of benzimidazole anti-aging agent is a variety of.

As the example of amines antioxidants, including but not limited to: N, N '-two (2- octyl)-p-phenylenediamine, N- isopropyl- N '-diphenyl-para-phenylene diamine, N, N '-two (1,4- dimethyl amyl group)-p-phenylenediamine, N- (1,3- dimethylbutyl)-N '-phenyl pair Phenylenediamine organic complex.

As the example of phenols (derivative) anti-aging agent, including but not limited to: 3- (3,5- di-tert-butyl-hydroxy phenyl) Propionic acid octadecyl ester, 2,2 '-thio two (4- methyl-6-tert-butylphenols).

As the example of benzimidazole anti-aging agent, including but not limited to: 2-mercaptobenzimidazole.

In a preferred embodiment, the anti-aging agent model in ageing-resistant stream drop master batch of the present invention Irganox1010 is bought from BASF.

Hindered amine light stabilizer

Hindered amine light stabilizer of the present invention is a kind of organic amine compound with steric restriction.Hindered amine is to height The photooxidation droping of polymers (see high-molecular compound) and organic compound reaction (see high-molecular optical degradation) has inhibits effect well Fruit is the light stabilizer of a kind of function admirable.

Hindered amine light stabilizer in ageing-resistant stream drop master batch of the present invention is selected from bis- (2,2,6,6- tetramethyl -4- piperazines Piperidinyl) sebacate, bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates, bis- (1- octyloxy -2,2,6,6- tetramethyls Base -4- piperidyl) last of the ten Heavenly stems diester, three (1,2,2,6,6- pentamethyl -4- piperidyl) phosphite esters, poly- [[6- [(1,1,3,3- tetramethyl Base butyl) amine] -1,3,5- triazine -2,4- diyl] two dihexyl of [(2,2,6,6- tetramethyl -4- piperidines) imines] -1,6- [(2, 2,6,6- tetramethyl -4- piperidines) imines]]] one of or it is a variety of.

In a preferred embodiment, the hindered amine light stabilizer in ageing-resistant stream drop mother of the present invention is TH9944 is bought from Zhengzhou Ai Kemu Chemical Co., Ltd..

Function additive

In some embodiments, the function additive in ageing-resistant stream drop master batch of the present invention is by three isocyanide of L-lysine Acid esters, docosyl alcohol, function monomer are prepared.

In a kind of preferred embodiment, function monomer of the present invention is propane diamine and acetic acid imidazoline.

In some embodiments, the preparation step of function additive of the present invention includes: equipped with thermometer and reflux L-lysine triisocyanate is added in the reaction kettle of device, is diluted with acetone, docosyl alcohol is then added dropwise and contains catalyst two The acetone soln of dibutyl tin laurate is stirred to react 1~2 hour at 55 DEG C, function monomer, insulation reaction 2~3 is then added dropwise Hour is up to the function additive.

In a preferred embodiment, the preparation step of acetic acid imidazoline of the present invention includes: and incites somebody to action at 80 DEG C Acetic acid and diethylenetriamine are added in three-necked flask, and toluene is added and is stirred at reflux 30min, and it is small to be then warming up to 140 DEG C of reactions 1 When, then 180 DEG C are warming up to, it reacts 2 hours, is oozed now when condenser pipe is anhydrous, reactant is cooled to 110 DEG C, distills out first Benzene and excessive diethylenetriamine are cooled to room temperature and obtain above-mentioned acetic acid imidazoline monomer.

In a preferred embodiment, three isocyanide of L-lysine described in function additive preparation process of the present invention The molar ratio of acid esters and the docosyl alcohol is 1:(1.8~2.2)；The L-lysine triisocyanate and the function monomer Molar ratio be 1:(0.5~1.2)；The function monomer is propane diamine and acetic acid imidazoline, and the weight ratio of the two is (1 ~3): 1；Wherein, the CAS of the L-lysine triisocyanate is 69878-18-8, and the CAS of docosyl alcohol is 661-19-8.

Present inventor has found by preparing the selection of monomer component and the control of usage ratio to function additive, not only Canopy film stream drop effect can be improved, keep its period that works elongated, moreover it is possible to while improve canopy film subtracts fog effect.Its possible reason It is the work that layer of surface in canopy film is helped to improve under synergistic effect of the function additive between drip agent, the other ingredients of masterbatch etc. Property, make the rapid adsorption coagulation of hydrone in canopy film inner surface, while reducing the surface tension of hydrone, keeps it downward along membranous wall Inflow surface.Furthermore the unexpected discovery of applicant can improve canopy under the interaction of function additive and drip agent etc. The service life of film, even if will not be packed largely containing the pesticides such as chlorine, sulphur, stream drop, subtract fog effect will not be It disappears in a short time.When in conventional canopy film using the pesticide containing elements such as chlorine, sulphur, these elements can accelerate the auxiliary agents such as drip agent Precipitation, shorten the action period that canopy film subtracts mist, stream drop effect, and groups such as function additive, drip agent in the present invention point it Between synergistic effect under the above problem be addressed.The possible reason is the amino groups in function additive molecule are functions Auxiliary agent is presented certain alkalinity, can and the elements such as chlorine, sulphur of pesticide combine, avoid above-mentioned element to light stabilizer in canopy film, anti- Old agent etc. destroys, to avoid the quickening of Related Component migration velocity caused by the degradation of canopy film.

Drip agent

Drip agent of the present invention is a kind of surfactant, acts the interfacial tension destroyed between droplet and film, prevents One analog assistant of surface formation droplet.Typically with the chemicals of surface-active, it is added in polymer processing, it can Make small droplet size distribution made of condensation at continuous transparent lamina, function is the contact reduced between water and polymer surfaces Angle prevents surface from forming droplet.

In a preferred embodiment, the drip agent in ageing-resistant stream drop master batch of the present invention is selected from polyol resin Fat acid esters.

In a kind of preferred embodiment, drip agent of the present invention is FWD650, is bought from Town in Shanghai benefit chemical industry Co., Ltd.

In a kind of preferred embodiment, function additive and drip agent weight ratio 1:(0.2 of the present invention~ 0.4)。

Present inventor's discovery feature auxiliary agent and drip agent can extend subtracting for canopy film in the compounding of constant weight ratio Mist and stream drop onset time, it can match with the service life of canopy film.Inventor speculate itself the possible reason is, function additive have length Fat chain structure, the difference between cohesion energy density and other polyethylene kind components is little, can be good at it is compatible and point It dissipates, and since the polarity of the groups such as ammonia ester bond is stronger, differing greatly between polyolefins component, compatibility therebetween is not It is good, function additive moiety segments (polar portion) can be made to move to the moisture content effect in film surface and canopy and play stream drop effect.By It is intertwine with each other effect between long aliphatic chain and the other components of system in function additive, effectively avoids the loss of function additive, Extend onset time.Simultaneously because the irregular atactic molecule chain structure of function additive hinders canopy film to prepare the orderly row of raw material Column, avoid raw material from crystallizing during the preparation process, avoid the refraction and reflection of light, help to improve the light transmittance and low-temperature resistance of canopy film Performance.

In a preferred embodiment, by weight, interior two layers of the present invention include: 25~35 parts of POE, 10 ~15 parts of mLLDPE-1,3~7 parts of ageing-resistant streams drip master batch.

(POE)

The present invention is not particularly limited interior two layers of the POE, can be various POE commonly used in the art, It can be commercially available, such as the POE being available commercially includes but is not limited to buy from Tao Shi E.I.Du Pont Company, the trade mark is The product of 1881G or 8201.

(mLLDPE-1)

MLLDPE of the present invention is metallocene linear-low density polyethylene, narrow with relative molecular mass distribution, total The characteristics of polycondensation monomer is evenly distributed has high toughness, the good, contamination resistance of the transparency and Nai Ci using the film that it developed It wears ability, the advantages that heat-sealing temperature range is wide, therefore is widely used.

MLLDPE-1 preferred density of the present invention is 0.919~0.935g/cm³MLLDPE, can be by commercially available It arrives, such as the mLLDPE-1 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark 1327CA, 1327ED's Product, density 0.927g/cm³。

(ageing-resistant stream drips master batch)

Two layers of ageing-resistant stream drop master batch drips master batch with interior one layer of the ageing-resistant stream in of the present invention.

In a preferred embodiment, by weight, middle layer of the present invention include: 20~30 parts of EVA, 15~ 25 parts of POE, 10~15 parts of LDPE-2,4~7 parts of heat preservation master batches.

(EVA)

EVA of the present invention is Chinese chemical name: ethylene-vinyl acetate copolymer made of ethylene and acetic acid copolymerization (ethene-vinyl acetate copolymer), the content of general vinyl acetate (VA) is in 5%-40%, compared with polyethylene (PE), EVA by In introducing vinyl acetate monomer in strand, to reduce high-crystallinity, improves toughness, impact resistance, filler and mix Property and heat sealing performance, be widely used in the necks such as foaming shoe material, functional greenhouse film, packaging mould, hot melt adhesive, wire and cable and toy Domain.

The content of VA is preferably 8~18wt% in EVA of the present invention, and the melt index under 190 DEG C, 2.16kg is 0.5~2g/10min；It is furthermore preferred that the content of VA is preferably 10~16wt% in the EVA, it is molten under 190 DEG C, 2.16kg Melting index is 0.5~1g/10min；It can be commercially available, such as the EVA being available commercially includes but is not limited to buy certainly Yangtze petrochemical industry BASF, the trade mark are the product of V4110F, and the content of VA is 12.6~15.4wt%, melt index is 0.6~ 0.9g/10min。

Present inventor has found that the VA of certain content in EVA can be such that the polarity of the component and cohesion energy density gets higher, and mentions High material intramolecular active force avoids its premature abrasion and destruction in use to improve canopy film strength.However VA content can not be excessively high, otherwise the polarity difference due to it between other components can make between material there are incompatible region and Interface reduces canopy film strength instead.Secondly, it is found by the applicant that the content of VA within the scope of 8~18wt% when help to change The heat insulation effect of kind canopy film, the possible reason is under the premise of not influencing compatibility between each material, due to specific VA The canopy film middle layer consistency that the EVA of content makes, which increases, reduces heat loss in canopy film, so as to improve its heat insulation effect.In addition, application The unexpected discovery of people is additionally aided using the EVA of above-mentioned specific VA content and extends subtracting mist, flowing drop effect for canopy film.It can The reason of energy, is, since EVA relatively compact structure and relatively high density hinder function additive, drip agent in two layers interior Equal ingredients are migrated toward middle layer or outer layer, facilitate one layer of slowly migration inside under the extruding of EVA component instead, namely slowly release These function additives are put, avoiding the corresponding effect of canopy film, as time goes by and disappears, while can make the corresponding effect of canopy film again Fruit is fully played.

(POE)

The present invention is not particularly limited the POE in the middle layer, can be various POE commonly used in the art, can To be commercially available, such as the POE being available commercially includes but is not limited to buy from Tao Shi E.I.Du Pont Company, trade mark 1881G Or 8201 product.

(LDPE-2)

LDPE-2 preferred density of the present invention is 0.912~0.935g/cm³LDPE, can be commercially available, example The LDPE being such as available commercially includes but is not limited to buy from Exxon Mobil, and the trade mark is the product of LD171BA, and density is 0.929g/cm³。

(heat preservation master batch)

In a preferred embodiment, by weight, the heat preservation master batch include: 20~30 parts of LDPE, 10~ 15 parts of talcum powder, 3~5 parts of basic magnesium carbonates.

LDPE

The present invention is not particularly limited the LDPE in the heat preservation master batch, can be commonly used in the art various LDPE can be commercially available, such as the LDPE being available commercially includes but is not limited to buy from Exxon Mobil, and the trade mark is The product of LD171BA.

Talcum powder

Talcum powder of the present invention is magnesium silicate mineral talc talc, and main component is hydrous magnesium silicate, through powder After broken, with HCl treatment, washing, drying is formed.Its with lubricity, anti-stick, help stream, fire resistance, acid-resisting, insulating properties, molten Point height, the chemically excellent Wuli-Shili-Renli system approach such as torpescence, covering power good, softness, good luster, strong adsorption force.

The present invention is not particularly limited the talcum powder in the heat preservation master batch, can be commonly used in the art each Kind talcum powder, can be commercially available, and talcum powder of the present invention is bought from Changxing Huayang plastic material Co., Ltd.

Basic magnesium carbonate

Basic magnesium carbonate of the present invention is a kind of white monoclinic crystal or amorphous powder, and the five poisonous creatures: scorpion, viper, centipede, house lizard, toad are tasteless, in air Stablize.Excellent filler and reinforcing agent as rubber product, can be used as being insulated, fireproof and heat-insulating material resistant to high temperature.

The present invention is not particularly limited the basic magnesium carbonate in the heat preservation master batch, can be commonly used in the art Various basic magnesium carbonates, can be commercially available, basic magnesium carbonate of the present invention purchase jumps river titanium white chemical industry from Shanghai Products Co., Ltd.

In a preferred embodiment, by weight, outer two layers of the present invention include: 20~30 parts MLLDPE-2,30~50 parts of POE, 30~40 parts of LLDPE-2,3~5 parts of anti-one's old mother's grains.

(mLLDPE-2)

MLLDPE-2 preferred density of the present invention is 0.919~0.935g/cm³MLLDPE, can be by commercially available It arrives, such as the mLLDPE-2 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark 1327CA, 1327ED's Product, density 0.927g/cm³。

(POE)

The present invention is not particularly limited outer two layers of the POE, can be various POE commonly used in the art, It can be commercially available, such as the POE being available commercially includes but is not limited to buy from Tao Shi E.I.Du Pont Company, the trade mark is The product of 1881G or 8201.

(LLDPE-2)

LLDPE-2 preferred density of the present invention is 0.919~0.935g/cm³LLDPE, can be commercially available, Such as the LLDPE-2 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark is the product of LL1107X95, close Degree is 0.922g/cm³。

(anti-one's old mother's grain)

In a preferred embodiment, by weight, anti-one's old mother's grain includes: 20~30 parts of LLDPE, 0.5 ~1.5 parts of hindered amine light stabilizers, 1~3 part of composite antioxidant.

LLDPE

The present invention is not particularly limited the LLDPE in the anti-one's old mother grain, can be commonly used in the art each Kind LLDPE, can be commercially available, such as the LLDPE being available commercially includes but is not limited to buy from Exxon Mobil, board Number be JB-512 product.

Hindered amine light stabilizer

The present invention is not particularly limited the hindered amine light stabilizer in anti-one's old mother's grain, can be conventional for this field The various anti-aging agents used, such as the hindered amine light stabilizer can be selected from bis- (2,2,6,6- tetramethyl -4- piperidyl) last of the ten Heavenly stems two Acid esters, bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates, bis- (1- octyloxy -2,2,6,6- tetramethyl -4- piperidines Base) last of the ten Heavenly stems diester, three (1,2,2,6,6- pentamethyl -4- piperidyl) phosphite esters, poly- [[6- [(1,1,3,3- tetramethyl butyl) Amine] -1,3,5- triazine -2,4- diyl] two dihexyl [(2,2,6,6- of [(2,2,6,6- tetramethyl -4- piperidines) imines] -1,6- Tetramethyl -4- piperidines) imines]]] one of or it is a variety of.

In a preferred embodiment, the hindered amine light stabilizer in anti-one's old mother's grain of the present invention is TH9944, It buys from Zhengzhou Ai Kemu Chemical Co., Ltd..

Composite antioxidant

Antioxidant of the present invention is a kind of chemical substance, in the presence of it is only a small amount of in polymeric system, so that it may prolong Progress that is slow or inhibiting polymer oxidation process, to prevent the aging of polymer and prolong its service life.

Composite antioxidant in anti-one's old mother's grain of the present invention is selected from amine antioxidants, esters antioxidant, phenolic antioxidant In at least two kinds；Wherein amine antioxidants are selected from suffocated amine antioxidant；Esters antioxidant is selected from phosphite ester antioxidant； Phenolic antioxidant is selected from Hinered phenols antioxidant.

As the example of amine antioxidants, including but not limited to: antioxidant 445, hindered amine 5057, hindered amine 944.

As the example of phenolic antioxidant, including but not limited to: BHT, antioxidant 1010, antioxidant 1076, antioxidant DLTDP, antioxidant 1135, antioxidant 245.

As the example of phosphite ester antioxidant, including but not limited to: irgasfos 168, antioxidant 3010, antioxidant 626。

In a preferred embodiment, the antioxidant in anti-one's old mother's grain of the present invention is antioxidant 1010 and antioxygen Agent 168 is that 1:1 compounds to obtain according to weight ratio.

In a preferred embodiment, by weight, outer one layer of the present invention includes: 30~40 parts MLLDPE-3,30~40 parts of POE, 10~20 parts of LLDPE-3,5~10 parts of anti-one's old mother's grains.

(mLLDPE-3)

MLLDPE-3 preferred density of the present invention is 0.912~0.918g/cm³MLLDPE, can be by commercially available It arriving, such as the mLLDPE-3 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark is the product of E1012HA, Density is 0.912g/cm³。

(POE)

The present invention is not particularly limited outer one layer of the POE, can be various POE commonly used in the art, It can be commercially available, such as the POE being available commercially includes but is not limited to buy from Tao Shi E.I.Du Pont Company, the trade mark is The product of 1881G or 8201.

(LLDPE-3)

LLDPE-3 preferred density of the present invention is 0.912~0.918g/cm³LLDPE, can be commercially available, Such as the LLDPE-3 being available commercially includes but is not limited to buy from Exxon Mobil, the trade mark is the product of FL201XV, density For 0.916g/cm³。

(anti-one's old mother's grain)

Outer one layer of anti-one's old mother grain of the present invention is the same as outer two layers of the anti-one's old mother grain.

Applicants have discovered that inside one layer with interior two layers and it is outer one layer and it is two layers outer between form density gradient, inside Two layers and outer two layers of high density, relatively compact material extruding under, make in functional stratum nucleare difference in two layers and outer two layers Slowly one layer and outer one layer migration, slow release functional components are not fully exerted in the effect for making these ingredients inside While, extend its onset time.

The second aspect of the present invention provides the preparation method of the ageing-resistant stream drop master batch, includes the following steps: institute LDPE, anti-aging agent, hindered amine light stabilizer, function additive are stated, drip agent, which is put into, mixes 10~15min in high-speed mixer, so After be transferred to double screw extruder melting extrusion, extrusion temperature is 150~200 DEG C, and the ageing-resistant stream is obtained after air-cooled and is dripped Master batch.

Third aspect of the present invention provide it is described heat preservation master batch preparation method, include the following steps: by the LDPE, 10~15min is mixed in talcum powder, basic magnesium carbonate investment high-speed mixer, double screw extruder melting is then transferred to and squeezes Out, extrusion temperature is 150~200 DEG C, and the heat preservation master batch is obtained after air-cooled.

The 4th aspect of the present invention provides the preparation method of anti-one's old mother's grain, and including the following steps: will be described LLDPE, hindered amine light stabilizer, composite antioxidant, which are put into, mixes 10~15min in high-speed mixer, be then transferred to twin-screw Extruder melting extrusion, extrusion temperature are 150~200 DEG C, and anti-one's old mother's grain is obtained after air-cooled.

The 5th aspect of the present invention provides the preparation method of above-mentioned agricultural canopy film, includes the following steps:

(1) by one layer in canopy film, two layers interior, middle layer, it is two layers outer, it is outer one layer prepare raw material mix, stir 15min after One layer in putting into respectively, two layers interior, middle layer, in two layers outer, outer one layer of five host hopper in case extruder squeezes out；

Raw material in (2) five host hoppers continuously put into extruder melting extrusion in having one layer, it is two layers interior, in Layer, two layers outer, outer one layer of five layers of helical flow path compound die head in, the raw material of melting is compiled in die orifice by the outflow of respective spiral Forming five layers of composite pipe blank, wherein extruder barrel temperature is 160 DEG C~190 DEG C, and connecting tube temperature is 180 DEG C~210 DEG C, Head temperature is 180 DEG C~200 DEG C；

(3) pipe of drawn by blower inflation arrive required size, then cooling and shaping with post-process to obtain the final product.

The present invention is specifically described below by embodiment, in addition, if without other explanations, it is raw materials used to be all It is commercially available.

Embodiment

Embodiment 1

Embodiment 1 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

By weight, in of the present invention one layer include: 20 parts of POE, 15 parts of LLDPE-1,10 parts of LDPE-1,5 parts it is resistance to Aging stream drips master batch.

One layer of each component source is as follows in described:

One layer of POE is purchase from Tao Shi E.I.Du Pont Company in described, and the trade mark is the product of 1881G；

The LLDPE-1 is purchase from Exxon Mobil, and the trade mark is the product of FL201XV, density 0.916g/cm³；

The LDPE-1 is purchase from Exxon Mobil, and the trade mark is the product of 350D65, density 0.917g/cm³；

Wherein, by weight, the ageing-resistant stream drop master batch includes: 10 parts of LDPE, 0.5 part of anti-aging agent, 1 part of hindered amine Light stabilizer, 1 part of function additive, 0.3 part of drip agent；

Wherein, the LDPE in the ageing-resistant stream drop master batch is purchase from Exxon Mobil, and the trade mark is the production of LD171BA Product；

Anti-aging agent model Irganox1010 in the ageing-resistant stream drop master batch, buys from BASF；

Hindered amine light stabilizer in the ageing-resistant stream drop mother is TH9944, is bought from the limited public affairs of Zhengzhou Ai Kemu chemical industry Department；

Function additive in the ageing-resistant stream drop master batch is by L-lysine triisocyanate, docosyl alcohol, function monomer system It is standby to obtain；Wherein, the function monomer is propane diamine and acetic acid imidazoline；

Wherein, the preparation step of the function additive includes: to be added in the reaction kettle equipped with thermometer and reflux unit L-lysine triisocyanate, is diluted with acetone, then be added dropwise docosyl alcohol and containing catalyst dibutyltin dilaurylate third Ketone solution is stirred to react 2 hours at 55 DEG C, function monomer is then added dropwise, insulation reaction 2 hours up to the function additive；

The preparation step of the acetic acid imidazoline includes: that acetic acid and diethylenetriamine are added to three-necked flask at 80 DEG C In, toluene is added and is stirred at reflux 30min, is then warming up to 140 DEG C and reacts 1 hour, then be warming up to 180 DEG C, react 2 hours, when Condenser pipe is anhydrous to be oozed now, and reactant is cooled to 110 DEG C, toluene and excessive diethylenetriamine is distilled out, is cooled to room Temperature obtains above-mentioned acetic acid imidazoline monomer；

The molar ratio of L-lysine triisocyanate described in the function additive preparation process and the docosyl alcohol is 1:1.8；The molar ratio of the L-lysine triisocyanate and the function monomer is 1:0.5；The function monomer is third Diamines and acetic acid imidazoline, the weight ratio of the two are 1:1；Wherein, the CAS of the L-lysine triisocyanate is 69878- 18-8, the CAS of docosyl alcohol are 661-19-8；

The drip agent is FWD650, is bought from Town in Shanghai benefit Chemical Co., Ltd..

The preparation method of the ageing-resistant stream drop master batch, includes the following steps: the LDPE, anti-aging agent, hindered amine light Stabilizer, function additive, drip agent put into high-speed mixer and mix 15min, are then transferred to double screw extruder melting and squeeze Out, extrusion temperature is 180 DEG C, and the ageing-resistant stream drop master batch is obtained after air-cooled.

By weight, interior two layers of the present invention include: 25 parts of POE, 10 parts of mLLDPE-1,3 parts of ageing-resistant streams drop mothers Grain.

Two layers of each component source is as follows in described:

Two layers of POE is purchase from Tao Shi E.I.Du Pont Company in described, and the trade mark is the product of 1881G or 8201；

The mLLDPE-1 is purchase from Exxon Mobil, and the trade mark is the product of 1327CA, density 0.927g/cm³；

Two layers of ageing-resistant stream drop master batch drips master batch with interior one layer of the ageing-resistant stream in described.

By weight, middle layer of the present invention includes: 20 parts of EVA, 15 parts of POE, 10 parts of LDPE-2,4 parts of heat preservation master batches.

The each component source in the middle layer is as follows:

The EVA is purchase from Yangtze petrochemical industry BASF, and the trade mark is the product of V4110F, the content of VA is 12.6~ 15.4wt%, melt index are 0.6~0.9g/10min；

The POE in the middle layer is purchase from Tao Shi E.I.Du Pont Company, and the trade mark is the product of 1881G；

The LDPE-2 is purchase from Exxon Mobil, and the trade mark is the product of LD171BA, density 0.929g/cm³；

Wherein, by weight, the heat preservation master batch includes: 20 parts of LDPE, 10 parts of talcum powder, 3 parts of basic magnesium carbonates；

LDPE in the heat preservation master batch is purchase from Exxon Mobil, and the trade mark is the product of LD171BA；

The talcum powder is bought from Changxing Huayang plastic material Co., Ltd；

The basic magnesium carbonate is bought from Shanghai jump river titanium white heavy chemicals Co., Ltd.

The preparation method of the heat preservation master batch includes the following steps: the LDPE, talcum powder, basic magnesium carbonate investment 15min is mixed in high-speed mixer, is then transferred to double screw extruder melting extrusion, extrusion temperature is 180 DEG C, after air-cooled Obtain the heat preservation master batch.

By weight, outer two layers of the present invention include: 20 parts of mLLDPE-2,30 parts of POE, 30 parts of LLDPE-2,3 parts Anti- one's old mother's grain.

Outer two layers of each component source is as follows:

The mLLDPE-2 is purchase from Exxon Mobil, and the trade mark is the product of 1327CA, density 0.927g/cm³；

Outer two layers of the POE is purchase from Tao Shi E.I.Du Pont Company, and the trade mark is the product of 1881G；

The LLDPE-2 is purchase from Exxon Mobil, and the trade mark is the product of LL1107X95, density 0.922g/cm3；

Wherein, by weight, the anti-one's old mother grain include: 20 parts of LLDPE, 0.5 part of hindered amine light stabilizer, 1 part it is multiple Close antioxidant；

LLDPE in anti-one's old mother's grain is purchase from Exxon Mobil, and the trade mark is the product of JB-512；

Hindered amine light stabilizer in anti-one's old mother's grain is TH9944, is bought from Zhengzhou Ai Kemu Chemical Co., Ltd.；

It according to weight ratio is that 1:1 compounds to obtain that antioxidant in the anti-one's old mother grain, which is antioxidant 1010 and irgasfos 168,.

The preparation method of the anti-one's old mother grain includes the following steps: the LLDPE, hindered amine light stabilizer, compound anti- 15min is mixed in oxygen agent investment high-speed mixer, is then transferred to double screw extruder melting extrusion, extrusion temperature is 180 DEG C, Anti- one's old mother's grain is obtained after air-cooled.

By weight, outer one layer of the present invention includes: 30 parts of mLLDPE-3,30 parts of POE, 10 parts of LLDPE-3,5 parts Anti- one's old mother's grain.

Outer one layer of each component source is as follows:

The mLLDPE-3 is purchase from Exxon Mobil, and the trade mark is the product of E1012HA, density 0.912g/cm³；

Outer one layer of the POE is purchase from Tao Shi E.I.Du Pont Company, and the trade mark is the product of 1881G；

The LLDPE-3 is purchase from Exxon Mobil, and the trade mark is the product of FL201XV, density 0.916g/cm³；

Outer one layer of the anti-one's old mother grain is the same as outer two layers of the anti-one's old mother grain.

The preparation method of the agricultural canopy film, includes the following steps:

Embodiment 2

Embodiment 2 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

By weight, in of the present invention one layer include: 30 parts of POE, 20 parts of LLDPE-1,20 parts of LDPE-1,10 parts it is resistance to Aging stream drips master batch.

One layer of each component source is as follows in described:

One layer of POE is purchase from Tao Shi E.I.Du Pont Company in described, the product that the trade mark is 8201；

Wherein, by weight, the ageing-resistant stream drop master batch include: 20 parts of LDPE, 1.5 parts of anti-aging agents, 1.5 parts be obstructed Amine light stabilizer, 3 parts of function additives, 0.8 part of drip agent；

Function additive in the ageing-resistant stream drop master batch is the same as embodiment 1；

The preparation method is the same as that of Example 1 for the ageing-resistant stream drop master batch.

By weight, interior two layers of the present invention include: 35 parts of POE, 15 parts of mLLDPE-1,7 parts of ageing-resistant streams drop mothers Grain.

Two layers of each component source is as follows in described:

Two layers of POE is purchase from Tao Shi E.I.Du Pont Company in described, the product that the trade mark is 8201；

The mLLDPE-1 is purchase from Exxon Mobil, and the trade mark is the product of 1327ED, density 0.927g/cm³；

By weight, middle layer of the present invention includes: 30 parts of EVA, 25 parts of POE, 15 parts of LDPE-2,7 parts of heat preservation master batches.

The each component source in the middle layer is as follows:

The POE in the middle layer is purchase from Tao Shi E.I.Du Pont Company, the product that the trade mark is 8201；

Wherein, by weight, the heat preservation master batch includes: 30 parts of LDPE, 15 parts of talcum powder, 5 parts of basic magnesium carbonates；

The talcum powder is bought from Changxing Huayang plastic material Co., Ltd；

The preparation method is the same as that of Example 1 for the heat preservation master batch.

By weight, outer two layers of the present invention include: 30 parts of mLLDPE-2,50 parts of POE, 40 parts of LLDPE-2,5 parts Anti- one's old mother's grain.

Outer two layers of each component source is as follows:

The mLLDPE-2 is to buy from Exxon Mobil, the product of the trade mark 1327CA, 1327ED, and density is 0.927g/cm³；

Outer two layers of the POE is purchase from Tao Shi E.I.Du Pont Company, the product that the trade mark is 8201；

The LLDPE-2 is purchase from Exxon Mobil, and the trade mark is the product of LL1107X95, density 0.922g/cm³；

Wherein, by weight, the anti-one's old mother grain include: 30 parts of LLDPE, 1.5 parts of hindered amine light stabilizers, 3 parts it is multiple Close antioxidant；

The preparation method is the same as that of Example 1 for anti-one's old mother's grain.

By weight, outer one layer of the present invention includes: 40 parts of mLLDPE-3,40 parts of POE, 20 parts of LLDPE-3,10 parts Anti- one's old mother's grain.

Outer one layer of each component source is as follows:

Outer one layer of the POE is purchase from Tao Shi E.I.Du Pont Company, the product that the trade mark is 8201；

The preparation method is the same as that of Example 1 for the agricultural canopy film.

Embodiment 3

Embodiment 3 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

By weight, in of the present invention one layer include: 25 parts of POE, 18 parts of LLDPE-1,15 parts of LDPE-1,8 parts it is resistance to Aging stream drips master batch.

One layer of each component source is as follows in described:

Wherein, by weight, the ageing-resistant stream drop master batch includes: 15 parts of LDPE, 1 part of anti-aging agent, 1.2 parts of hindered amines Light stabilizer, 2 parts of function additives, 0.5 part of drip agent；

By weight, interior two layers of the present invention include: 30 parts of POE, 12 parts of mLLDPE-1,5 parts of ageing-resistant streams drop mothers Grain.

Two layers of each component source is as follows in described:

By weight, middle layer of the present invention includes: 25 parts of EVA, 20 parts of POE, 13 parts of LDPE-2,6 parts of heat preservation master batches.

The each component source in the middle layer is as follows:

Wherein, by weight, the heat preservation master batch includes: 25 parts of LDPE, 12 parts of talcum powder, 4 parts of basic magnesium carbonates；

The talcum powder is bought from Changxing Huayang plastic material Co., Ltd；

By weight, outer two layers of the present invention include: 25 parts of mLLDPE-2,40 parts of POE, 35 parts of LLDPE-2,4 parts Anti- one's old mother's grain.

Outer two layers of each component source is as follows:

The mLLDPE-2 is purchase from Exxon Mobil, and the trade mark is the product of 1327ED, density 0.927g/cm³；

Wherein, by weight, the anti-one's old mother grain include: 25 parts of LLDPE, 1.0 parts of hindered amine light stabilizers, 2 parts it is multiple Close antioxidant；

By weight, outer one layer of the present invention includes: 35 parts of mLLDPE-3,35 parts of POE, 15 parts of LLDPE-3,8 parts Anti- one's old mother's grain.

Outer one layer of each component source is as follows:

Embodiment 4

Embodiment 4 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 4 is same as Example 3, the difference is that individual material rates are not in the function additive preparation process Same: the molar ratio of L-lysine triisocyanate described in the function additive preparation process and the docosyl alcohol is 1:2.2； The molar ratio of the L-lysine triisocyanate and the function monomer is 1:1.2；The function monomer be propane diamine and Acetic acid imidazoline, the weight ratio of the two are 3:1；Wherein, the CAS of the L-lysine triisocyanate is 69878-18-8, The CAS of docosyl alcohol is 661-19-8.

Embodiment 5

Embodiment 5 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 5 is same as Example 3, the difference is that individual material rates are not in the function additive preparation process Same: the molar ratio of L-lysine triisocyanate described in the function additive preparation process and the docosyl alcohol is 1:2；Institute The molar ratio for stating L-lysine triisocyanate and the function monomer is 1:1；The function monomer is propane diamine and acetic acid Imidazoline, the weight ratio of the two are 2:1；Wherein, the CAS of the L-lysine triisocyanate is 69878-18-8, behenyl The CAS of alcohol is 661-19-8.

Embodiment 6

Embodiment 6 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 6 is same as Example 5, the difference is that the ageing-resistant stream drop master batch is different: by weight, institute Stating ageing-resistant stream drop master batch includes: 15 parts of LDPE, 1 part of anti-aging agent, 1.2 parts of hindered amine light stabilizers, 0.1 part of function additive, 0.5 Part drip agent.

Embodiment 7

Embodiment 7 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 7 is same as Example 5, the difference is that the ageing-resistant stream drop master batch is different: by weight, institute Stating ageing-resistant stream drop master batch includes: 15 parts of LDPE, 1 part of anti-aging agent, 1.2 parts of hindered amine light stabilizers, 30 parts of function additives, 0.5 Part drip agent.

Embodiment 8

Embodiment 8 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 8 is same as Example 5, the difference is that individual material rates are not in the function additive preparation process Same: the molar ratio of L-lysine triisocyanate described in the function additive preparation process and the docosyl alcohol is 1:2；Institute The molar ratio for stating L-lysine triisocyanate and the function monomer is 1:1；The function monomer is propane diamine and acetic acid Imidazoline, the weight ratio of the two are 0.1:1；Wherein, the CAS of the L-lysine triisocyanate is 69878-18-8, mountain The CAS of Yu alcohol is 661-19-8.

Embodiment 9

Embodiment 9 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 9 is same as Example 5, the difference is that individual material rates are not in the function additive preparation process Same: the molar ratio of L-lysine triisocyanate described in the function additive preparation process and the docosyl alcohol is 1:2；Institute The molar ratio for stating L-lysine triisocyanate and the function monomer is 1:1；The function monomer is propane diamine and acetic acid Imidazoline, the weight ratio of the two are 20:1；Wherein, the CAS of the L-lysine triisocyanate is 69878-18-8, behenyl The CAS of alcohol is 661-19-8.

Embodiment 10

Embodiment 10 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 10 is same as Example 5, the difference is that the EVA is purchase from Exxon Mobil, the trade mark is The product of FL00728CC, the content of VA are 27.5wt%, melt index 7g/10min.

Embodiment 11

Embodiment 11 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 11 is same as Example 5, the difference is that the EVA is to buy from Hyundai, trade mark EF221 Product, the content of VA is 3wt%, melt index 0.6g/10min.

Embodiment 12

Embodiment 12 provides a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, described agricultural Canopy film by interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer；Its In, by weight, the agricultural canopy film include: one layer 12 parts interior, two layers 10 parts interior, 18 parts of middle layer, it is two layers 18 parts outer, outer one 25 parts of layer.

Embodiment 12 is same as Example 5, the difference is that: the mLLDPE-1 is to buy from Exxon Mobil, board Number be E1012HA product, density 0.912g/cm³；The mLLDPE-2 is purchase from Exxon Mobil, and the trade mark is The product of E1012HA, density 0.912g/cm³；The mLLDPE-3 is purchase from Exxon Mobil, and the trade mark is 1327CA's Product, density 0.927g/cm³。

Performance evaluation

1, it artificial accelerated aging test: is tested according to GB/T16422.3-2014 standard.

2, it stream drop fog dispersal phase, light transmittance, mist degree test: is tested according to GB/T20202-2006 standard.

3, mobility is tested: it being placed six months under dry environment, its weight rate is measured and obtains mobility.

Table 1

Claims

1. a kind of agricultural canopy film for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, which is characterized in that the agricultural canopy film By interior one layer, two layers interior, middle layer, it is two layers outer, outer one layer form, and each layer stacks gradually outward from interior one layer.

2. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In by weight, the agricultural canopy film includes: one layer 10~15 parts interior, two layers 8~12 parts interior, 15~20 parts of middle layer, outer two Layer 15~20 parts, it is one layer 20~30 parts outer.

3. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In by weight, described interior one layer includes: 20~30 parts of POE, 15~20 parts of LLDPE-1,10~20 parts of LDPE-1,5~10 The ageing-resistant stream of part drips master batch.

4. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In by weight, described interior two layers include: 25~35 parts of POE, 10~15 parts of mLLDPE-1,3~7 parts of ageing-resistant streams drop mothers Grain.

5. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In by weight, the middle layer includes: 20~30 parts of EVA, 15~25 parts of POE, 10~15 parts of LDPE-2,4~7 parts of heat preservations Master batch.

6. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In, by weight, described outer two layers include: 20~30 parts of mLLDPE-2,30~50 parts of POE, 30~40 parts of LLDPE-2,3~ 5 parts of anti-one's old mother's grains.

7. the agricultural canopy film according to claim 1 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In, by weight, described outer one layer include: 30~40 parts of mLLDPE-3,30~40 parts of POE, 10~20 parts of LLDPE-3,5~ 10 parts of anti-one's old mother's grains.

8. the agricultural canopy film according to claim 3 or 4 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature It is, by weight, the ageing-resistant stream drop master batch includes: 10~20 parts of LDPE, 0.5~1.5 part of anti-aging agent, 1~1.5 part Hindered amine light stabilizer, 1~3 part of function additive, 0.3~0.8 part of drip agent.

9. the agricultural canopy film according to claim 5 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, feature exist In by weight, the heat preservation master batch includes: 20~30 parts of LDPE, 10~15 parts of talcum powder, 3~5 parts of basic magnesium carbonates.

10. the agricultural canopy film according to claim 6 or 7 for subtracting the ageing-resistant low temperature resistance of mist with long-acting anti-dropping, special Sign is, by weight, anti-one's old mother's grain include: 20~30 parts of LLDPE, 0.5~1.5 part of hindered amine light stabilizer, 1~ 3 parts of composite antioxidants.