CN106810740A - A kind of functional agglomerate for improving polyethylene ground film solid water ability - Google Patents
A kind of functional agglomerate for improving polyethylene ground film solid water ability Download PDFInfo
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- CN106810740A CN106810740A CN201611097339.3A CN201611097339A CN106810740A CN 106810740 A CN106810740 A CN 106810740A CN 201611097339 A CN201611097339 A CN 201611097339A CN 106810740 A CN106810740 A CN 106810740A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
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- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
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Abstract
The present invention relates to feature masterbatch field, a kind of functional agglomerate of improvement polyethylene ground film solid water ability is prepared from by the component of following weight portion：80~100 parts of vector resin, 20~30 parts of Water fixing agent, 5~10 parts of sensitising agent, 2~3 parts of nano silicone diatomaceous earth, 0.8~1 part of weather resisting agent, coupling agent are 0.5~0.7 part, wherein vector resin is polyvinyl alcohol resin, and Water fixing agent is made up of the component of following weight part ratio：Bamboo fibre:Wood pulp:Plant absorbent mixture:Nanoscale sepiolite=1:1~1.5:0.5~0.7:1.2~1.5.The water absorbing capacity of functional agglomerate collaboration bamboo fibre of the invention, wood pulp, sepiolite and plant absorbent mixture, the solid water ability of polyethylene ground film can be lifted, make polyethylene ground film that there is Low Night Temperature water suction, the effect that daytime, high temperature discharged water, moisture in making crops make full use of environment, promote crop growth, saving water resource.
Description
Technical field
The present invention relates to feature masterbatch field, and in particular to a kind of polythene material for improving ground cover film
Solid water ability functional agglomerate.
Background technology
Polyethylene（PE）It is a kind of thermoplastic resin obtained in vinyl polymerization, with nontoxic, odorless and low temperature resistant excellent
Performance.And polyethylene presentation White waxy is transparent, more flexible, is one of preferred material of agricultural film, especially on ground
Face cover layer is the application in terms of mulch film.The mulch film of crops has insulation, water conservation, fertilizer conservation, diseases prevention and suppresses weed growth
Function.The water retaining function of wherein mulch film is mainly the evaporation for suppressing soil moisture.Because polyethylene water imbibition is weak so that polyethylene
Mulch film ability of trapping moisture from air is weaker, because the moisture that dewdrop etc. leaves also easily evaporates on polyethylene ground film, makes to gather
Crop under ethene mulch film can not effectively using the moisture in environment.Therefore polyethylene ground film solid water from surrounding environment is improved
Ability, for saving water resource, promote plant growth seem extremely important.Chinese patent CN105175848A, date of publication
On December 23rd, 2015, a kind of low density polyethylene (LDPE) degradative plastic film by the loaded cross-linked starch conversion of nanometer palygorskite of patent name
And preparation method thereof, disclosing one kind can drop by obtained in addition crosslinked starch, nanometer palygorskite in low density polyethylene (LDPE)
The low density polyethylene (LDPE) degradative membrane of solution, with the performance that can be fully degraded by biology, while water suction is ventilative.But the polyethylene drops
The water absorbing properties for solving film are general, and do not possess low temperature water suction, the effect of high temperature dehydration.
Master batch be by the modified chemical auxiliary agent uniform load of super quantity in the vector resin obtained from granular aggregation.With
Directly modified chemical auxiliary agent is added in product to compare：The dispersion effect of master batch makes well the performance of product uniform, the carrier of master batch
The compatibility of resin and product resin makes well the performance of the product of addition master batch lift effect more preferably, master batch using safety,
It is full-featured.
The content of the invention
Water suction, solid water ability for existing polyethylene ground film is weaker, and crops can not be made full use of in surrounding environment
Moisture problem, it is an object of the invention to provide a kind of functional agglomerate that can improve polyethylene ground film solid water ability, make
Being added with the polyethylene ground film of the functional agglomerate has good ability to cure, while having low temperature water suction, the effect of high temperature dehydration
Really, crops making full use of to the moisture in surrounding environment is improved, promotes crop growth, saving water resource.
The present invention provides following technical scheme：
A kind of functional agglomerate for improving polyethylene ground film solid water ability, is prepared from by the material component of following weight portion：Carrier
80~100 parts of resin, 20~30 parts of Water fixing agent, 5~10 parts of sensitising agent, 2~3 parts of nano silicone diatomaceous earth, 0.8~1 part of weather resisting agent,
Coupling agent is 0.5~0.7 part, and wherein vector resin is polyvinyl alcohol resin, and Water fixing agent is made up of the component of following weight part ratio：
Bamboo fibre:Wood pulp:Plant water suction extract:Nanoscale sepiolite=1:1~1.5:0.5~0.7:1.2~1.5.
Functional agglomerate of the invention is good with the compatibility of polyethylene products as vector resin from polyvinyl alcohol resin, can
Make functional agglomerate disperse to be more uniformly distributed in polyethylene products, help to lift polyethylene ground film consistency of performance.While poly- second
Enol resin has good water absorbing properties, with the solid water ability that polyethylene crosslinking can strengthen polyethylene ground film.Bamboo fibre contains
There are substantial amounts of bamboo cellulose, pectic substance, the substantial amounts of hydroxyl for wherein containing in cellulose can form hydrogen bond by with hydrone
Solid water, pectic substance is the Main Ingredients and Appearance of plant cell wall, with strong water imbibition, so that bamboo fibre has excellent moment
Water imbibition.The Main Ingredients and Appearance of wood pulp is cellulose, hemicellulose, pectic substance etc., so as to mutually strengthen soaking effect with bamboo fibre.
Plant water suction extract mainly uses the solid water ability of Potato pectins and cornstarch to realize water suction.Sepiolite is that one kind contains
Water magnesium silicate, with good water absorbing properties.Bamboo fibre, plant hydroscopic substance, wood pulp and sepiolite can under solar radiation simultaneously
To be dehydrated again, while bamboo fibre also has good permeability, the air-permeable, hydrophobic energy under polyethylene ground film daylight can be strengthened
Power.It is so de- under the different water absorbing capacities and sunshine high temperature of Water fixing agent collaboration bamboo fibre, plant hydroscopic substance, wood pulp and sepiolite
Outlet capacity, copper pipe functional agglomerate is added in polyethylene ground film product, make polyethylene ground film usually especially night temperatures it is low,
When high humidity can from environment solid water, can be dehydrated under periods of direct sunlight at noon, enable the crops under polyethylene ground film
Enough timely moisturizings.High temperature is produced after sensitising agent extinction makes the water that polyethylene ground film is adsorbed evaporate abjection again, master batch of strengthening function
Water separation capability after solid water.Diatomite can strengthen the hydrophobic, air-permeability ability of polyethylene ground film, while diatomaceous absorption water
Ability can strengthen function the solid water ability of master batch.Weather resisting agent can strengthen the fast light oxidation resistance of polyethylene ground film, extend the longevity
Life.Coupling agent improves diatomite, the surface-active between sepiolite and polyethylene, polyvinyl alcohol resin, improves addition functional
The performance of the polyethylene ground film of master batch.
Used as a modification of the present invention, the absorbing wavelength scope of the sensitising agent is 360~760 nm.Such sensitising agent
Luminous energy is absorbed in especially day light intensity on daytime, the Water fixing agent dehydration in promotion functions master batch.Sensitising agent subtracts in night visible ray
Absorb luminous energy after weak to decline, it is ensured that Water fixing agent can absorb water in time.
As a modification of the present invention, the preferred N- lucid asparagus acyl group chlorin of sensitising agent.N- lucid asparagus acyl groups
The light absorption range of chlorin is wide, absorbs luminous energy many.
Used as a modification of the present invention, the weight part ratio of the weather resisting agent is light stabilizer 744:Ultra-violet absorber
UVP-327=1:1.5~2.0.The composition of light stabilizer 744 is 4- benzoyloxy -2,2,6,6- tetramethyl piperidines, ultraviolet
The composition of absorbent UVP-327 is 2-（2 '-hydroxyl -3 ', 5 '-two tertiary phenyl）- 5- chlorination BTAs.Both use cooperatively
Compatibility with polyethylene is good, can both improve the light fastness stability of polyethylene ground film, while part ultraviolet light can be absorbed
Release heat, strengthens the effect of sensitising agent.
Used as a modification of the present invention, the coupling agent is silane coupler.Silane coupler can significantly improve sea
Afrodite, diatomite etc. and the surface-active of polyethylene, improve adhesive property, while the weatherability of polyethylene can also be strengthened.
A kind of preparation method of the functional agglomerate for improving polyethylene ground film solid water ability, comprises the following steps：
（1）Each material component of weight portion is put into mixing and blending machine and is mixed 1~2 hour in 45~55 DEG C of stirrings, stirring speed
280~350 r/min of degree；
（2）By in mixed material input double screw extruder, the mixing speed for keeping double screw extruder is 150~200 r/
Min, the temperature range that each section of double screw extruder is 130~180 DEG C, and granulating is extruded after being combined through fully melting；
（3）By step（2）The screen cloth sieving of the mesh of mesh~+20 of gained particle process -15.
Raw material is stirred in mixing and blending machine high speed first, improves the consistency of performance of functional agglomerate.By double
Screw extruder melts compound extruded into graininess, improves dispersed journey of the functional agglomerate in polyethylene ground film product
Degree, contributes to polyethylene ground film product properties uniformity.The particle diameter of functional agglomerate can pass through the screen cloth of -15 mesh of mesh~+20, both
Assurance function master batch is dispersed in polyethylene ground film product, and the excessive influence functional agglomerate of particle diameter is avoided again in polyethylene ground film
Melting dispersion effect in preparation.
As a modification of the present invention, step（2）The temperature control of each section of middle double screw extruder is respectively：One section
130~145 DEG C, two sections 145~155 DEG C, three sections 155~165 DEG C, four sections 165~175 DEG C, five sections 175~180 DEG C,
Six sections 170~175 DEG C, die head temperature be 170~175 DEG C.By the operation temperature that sets each section of double screw extruder gradually
Rise, the combination water of each dispensing, the scattered characteristic of lubrication in abundant release function master batch, the stabilization for improving functional agglomerate performance are equal
It is even.
As a modification of the present invention, step is being carried out（3）Before screen cloth screening particle, first by step（2）Gained particle
Aeration-drying 2~4 hours first at 120~130 DEG C, obtain dry particle.Can so be tied with promotion functions master batch surface
Structure is uniform, is easy to the long-term storage of master batch.
Beneficial effects of the present invention are as follows：
Functional agglomerate of the invention has cooperateed with the water absorbing capacity of bamboo fibre, wood pulp, sepiolite and plant water suction extract, is added to
The solid water ability of polyethylene ground film can be lifted in polyethylene ground film product, while having Low Night Temperature water suction, daylighting hyperthermia on daytime
The effect for discharging water, the moisture in making crops make full use of environment promotes crop growth, saving water resource.
Specific embodiment
Specific embodiment of the invention is described further below：
The absorbing wavelength of sensitising agent of the invention ranges preferably from 360~760 nm.
Embodiment 1：
A kind of functional agglomerate for improving polyethylene ground film solid water ability, is prepared from by following weight portion component：Vector resin 80
G, the g of Water fixing agent 20, the g of sensitising agent 5, the g of nano silicone diatomaceous earth 2, the g of weather resisting agent 0.8, coupling agent are 0.5 g, wherein vector resin
Polyvinyl alcohol resin, improves the compatibility of functional agglomerate and polyethylene products, while strengthening water absorbing capacity, Water fixing agent is by following heavy
Measure the component composition of part ratio：Bamboo fibre:Wood pulp:Plant water suction extract:Nanoscale sepiolite=1:1:0.5:1.2, plant water suction
Extract is preferably made up of the component of following weight part ratio：Potato pectins matter is constituted:Cornstarch=1:1.2, sensitising agent is preferred
N- lucid asparagus acyl group chlorins, with wider light absorption range, the composition preferred weight part of weather resisting agent is than being light stabilizer
744:Ultra-violet absorber UVP-327=1:1.2, coupling agent is preferably silane coupler.
A kind of preparation method of the functional agglomerate for improving polyethylene ground film solid water ability, comprises the following steps：
（1）Each material component of weight portion is put into mixing and blending machine and is mixed 2 hours in 45 DEG C of stirrings, mixing speed 280
r/min；
（2）By in mixed material input double screw extruder, the mixing speed for keeping double screw extruder is 150 r/min, double
The temperature range that each section of screw extruder is 130~180 DEG C, and granulating is extruded after being combined through fully melting；
（3）By step（2）The screen cloth sieving of the mesh of mesh~+20 of gained particle process -15.
To obtain the functional agglomerate of better performances, step（2）The temperature control of each section of middle double screw extruder is respectively：One
130~145 DEG C, two sections 145~155 DEG C, three sections 155~165 DEG C, four sections 165~175 DEG C, five section 175~180 of section
DEG C, six sections 170~175 DEG C, die head temperature be 170~175 DEG C.
To improve functional agglomerate surface texture uniformity, by step（2）The aeration-drying 4 first at 120 DEG C of gained particle
Hour, pass through step again after obtaining dry particle（3）Screen cloth screening.
The particle for passing through the screen cloth screening of -15 mesh of mesh~+20 is the functional agglomerate for improving polyethylene ground film solid water ability.
Embodiment 2：
A kind of functional agglomerate for improving polyethylene ground film solid water ability, is prepared from by following weight portion component：Vector resin 90
G, the g of Water fixing agent 25, the g of sensitising agent 7.5, the g of nano silicone diatomaceous earth 2.5, the g of weather resisting agent 0.9, coupling agent are 0.6 g, wherein carrier
Resin polyvinyl alcohol resin, improves the compatibility of functional agglomerate and polyethylene products, while strengthen water absorbing capacity, Water fixing agent by with
The component composition of lower weight part ratio：Bamboo fibre:Wood pulp:Plant water suction extract:Nanoscale sepiolite=1:1.25:0.6:
1.375, plant water suction extract is preferably made up of the component of following weight part ratio：Potato pectins matter is constituted:Cornstarch=1:
1.375, the preferred N- lucid asparagus acyl group chlorin of sensitising agent, with wider light absorption range, the composition preferred weight of weather resisting agent
Part is than being light stabilizer 744:Ultra-violet absorber UVP-327=1:1.375, coupling agent is preferably silane coupler.
A kind of preparation method of the functional agglomerate for improving polyethylene ground film solid water ability, comprises the following steps：
（1）50 DEG C of stirrings mix 1.5 hours during each material component of weight portion is put into mixing and blending machine, mixing speed 300
r/min；
（2）By in mixed material input double screw extruder, the mixing speed for keeping double screw extruder is 175 r/min, double
The temperature range that each section of screw extruder is 130~180 DEG C, and granulating is extruded after being combined through fully melting；
（3）By step（2）The screen cloth sieving of the mesh of mesh~+20 of gained particle process -15.
To obtain the functional agglomerate of better performances, step（2）The temperature control of each section of middle double screw extruder is respectively：One
130~145 DEG C, two sections 145~155 DEG C, three sections 155~165 DEG C, four sections 165~175 DEG C, five section 175~180 of section
DEG C, six sections 170~175 DEG C, die head temperature be 170~175 DEG C.
To improve functional agglomerate surface texture uniformity, by step（2）The aeration-drying 3 first at 130 DEG C of gained particle
Hour, pass through step again after obtaining dry particle（3）Screen cloth screening.
The particle for passing through the screen cloth screening of -15 mesh of mesh~+20 is the functional agglomerate for improving polyethylene ground film solid water ability.
Embodiment 3：
A kind of functional agglomerate for improving polyethylene ground film solid water ability, is prepared from by following weight portion component：Vector resin 100
G, the g of Water fixing agent 30, the g of sensitising agent 10, the g of nano silicone diatomaceous earth 3, the g of weather resisting agent 1.0, coupling agent are 0.7 g, wherein carrier tree
Fat polyvinyl alcohol resin, improves the compatibility of functional agglomerate and polyethylene products, while strengthening water absorbing capacity, Water fixing agent is by following
The component composition of weight part ratio：Bamboo fibre:Wood pulp:Plant water suction extract:Nanoscale sepiolite=1:1.5:0.7:1.5, plant
Water suction extract is preferably made up of the component of following weight part ratio：Potato pectins matter is constituted:Cornstarch=1:1.5, sensitising agent
It is preferred that N- lucid asparagus acyl group chlorins, with wider light absorption range, the composition preferred weight part of weather resisting agent is than being light stabilization
Agent 744:Ultra-violet absorber UVP-327=1:1.5, coupling agent is preferably silane coupler.
A kind of preparation method of the functional agglomerate for improving polyethylene ground film solid water ability, comprises the following steps：
（1）55 DEG C of stirrings mix 1 hour during each material component of weight portion is put into mixing and blending machine, the r/ of mixing speed 350
min；
（2）By in mixed material input double screw extruder, the mixing speed for keeping double screw extruder is 200 r/min, double
The temperature range that each section of screw extruder is 130~180 DEG C, and granulating is extruded after being combined through fully melting；
（3）By step（2）The screen cloth sieving of the mesh of mesh~+20 of gained particle process -15.
To obtain the functional agglomerate of better performances, step（2）The temperature control of each section of middle double screw extruder is respectively：One
130~145 DEG C, two sections 145~155 DEG C, three sections 155~165 DEG C, four sections 165~175 DEG C, five section 175~180 of section
DEG C, six sections 170~175 DEG C, die head temperature be 170~175 DEG C.
To improve functional agglomerate surface texture uniformity, by step（2）The aeration-drying 2 first at 140 DEG C of gained particle
Hour, pass through step again after obtaining dry particle（3）Screen cloth screening.
The particle for passing through the screen cloth screening of -15 mesh of mesh~+20 is the functional agglomerate for improving polyethylene ground film solid water ability.
The polyethylene ground film of the master batch of embodiment 1,2,3 is added respectively（1 sample, the sample of example 2, the sample of example 3 as a example by correspondence）
With commercial polyethylene mulch film（Comparative example）Test performance be shown in Table 1, method of testing is：It is the four of 100 cm × 100 cm by size
To constant weight, then recording quality m0 is respectively placed in 23 for drying in opening the drying box that mulch film is placed in 23 ± 2 DEG C, wind speed is 3.5 m/s
± 2 DEG C, relative humidity be 85% closed no light environment in place 48 hours absorb water, weigh recording quality m1 after taking-up, so
35 DEG C are placed in afterwards, weigh in the drying box that wind speed is 3.5 m/s recording quality m2 after 10 hours, the relative suction of sample is calculated respectively
Residual water rate b, wherein a=after water rate a and drying（m1-m2）/ m1*100%, b=（m2-m0）/m2*100%.
The test data of table 1
| Test event | The sample of example 1 | The sample of example 2 | The sample of example 3 | Comparative example |
| Relative water-intake rate a | 12.9% | 13.6% | 14.0% | ＜ 0.01% |
| Residual water rate b | 0.06% | 0.08% | 0.07% | ＜ 0.01% |
Being added with the polyethylene ground film of the functional agglomerate of embodiment 1,2,3 has good solid water ability and water separation capability, can
Moisture is absorbed from ambient atmosphere environment and crops are supplied and used, crop growth, saving water resource can be promoted.
Claims (9)
1. it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that by the material component of following weight portion
It is prepared from：It is 80~100 parts of vector resin, 20~30 parts of Water fixing agent, 5~10 parts of sensitising agent, 2~3 parts of nano silicone diatomaceous earth, resistance to
It is 0.5~0.7 part to wait 0.8~1 part of agent, coupling agent, and wherein vector resin is polyvinyl alcohol resin, and Water fixing agent is by following weight portion
The component composition of ratio：Bamboo fibre:Wood pulp:Plant water suction extract:Nanoscale sepiolite=1:1~1.5:0.5~0.7:1.2~
1.5。
2. it is according to claim 1 it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that it is described
The weight part ratio of plant water suction extract is Potato pectins matter:Cornstarch=1:1.2~1.5.
3. it is according to claim 1 it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that it is described
The absorbing wavelength scope of sensitising agent is 360~760 nm.
4. it is according to claim 3 it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that it is described
Sensitising agent is N- lucid asparagus acyl group chlorins.
5. it is according to claim 1 it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that it is described
The weight part ratio of weather resisting agent component is light stabilizer 744:Ultra-violet absorber UVP-327=1:1.5~2.0.
6. it is according to claim 1 it is a kind of improve polyethylene ground film solid water ability functional agglomerate, it is characterised in that it is described
Coupling agent is silane coupler.
7. it is a kind of as described in claim 1 to 6 is any improvement polyethylene ground film solid water ability functional agglomerate preparation method,
Comprise the following steps：
（1）The raw material each component of weight portion is put into mixing and blending machine and is mixed 1~2 hour in 45~55 DEG C of stirrings, stirring speed
280~350 r/min of degree；
（2）By in mixed material input double screw extruder, the mixing speed for keeping double screw extruder is 150~200 r/
Min, the temperature range that each section of double screw extruder is 130~180 DEG C, and granulating is extruded after being combined through fully melting；
（3）By step（2）The screen cloth sieving of the mesh of mesh~+20 of gained particle process -15.
8. the preparation method of a kind of functional agglomerate for improving polyethylene ground film solid water ability according to claim 7, it is special
Levy and be, step（2）The temperature control of each section of middle double screw extruder is respectively：One section 130~145 DEG C, two section 145~155
DEG C, three sections 155~165 DEG C, four sections 165~175 DEG C, five sections 175~180 DEG C, six sections 170~175 DEG C, die head temperature be
170~175 DEG C.
9. the preparation method of a kind of functional agglomerate for improving polyethylene ground film solid water ability according to claim 7, it is special
Levy and be, carrying out step（3）Before screen cloth screening particle, first by step（2）Gained particle is divulged information first at 120~130 DEG C
Dry 2~4 hours, obtain dry particle.
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| CN110628187A (en) * | 2019-09-30 | 2019-12-31 | 中国科学院理化技术研究所 | Water-collecting degradable mulching film and preparation method thereof |
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