CN107541807A - A kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network - Google Patents

A kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network Download PDF

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CN107541807A
CN107541807A CN201710715054.XA CN201710715054A CN107541807A CN 107541807 A CN107541807 A CN 107541807A CN 201710715054 A CN201710715054 A CN 201710715054A CN 107541807 A CN107541807 A CN 107541807A
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parts
heat radiation
astigmatism
preparation
master batch
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CN107541807B (en
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林云弟
魏永阳
邓树娥
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Shandong Weifang Academy of Agricultural Sciences
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Shandong Weifang Academy of Agricultural Sciences
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Abstract

The present invention provides a kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network, including prepares master batch, fiber preparation, knitting forming step；It is described to prepare master batch step：In parts by weight, the component of the master batch includes：37 38 parts of LDPE, 12.5 14 parts of LLDPE, 0.8 0.95 parts of TPU, 41 43 parts of rutile type titanium white, 2.6 2.8 parts of PE waxes, 1.0 1.5 parts of oleamide, 2.0 2.5 parts of far-infared ceramic powder, 0.2 0.5 parts of silane coupler.The astigmatism cooling heat radiation prevention net is used for the plantation of summer anti-season vegetables, and in the case of full sun, sunlight hiding rare reaches 95%.

Description

A kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network
The present invention is application number 201510787465.0, and on November 17 2015 applying date, " a kind of astigmatism drops denomination of invention The divisional application of the preparation method of warm radiation protection net ".
Technical field
The present invention relates to a kind of preparation method of astigmatism cooling heat radiation prevention net, astigmatism cooling heat radiation prevention net is applicable Cool in agricultural production shadings such as summer vegetable cultivation, flower planting, the nursery of woods fruit, livestock-raisings, belong to agricultural technology field.
Background technology
Sunshade net is also known as shading net, is a kind of special guarantor of new agriculture, forestry, animal husbandry, fisheries promoted over China's nearly more than 10 year Protect covering material.Play a part of after summer covering it is certain be in the light, keep off the rain, moisturizing, cooling.Also have after winter-spring season covering certain Thermal insulation wetting effect.At present, sunshading net for agriculture use is that polyolefin is primary raw material, is woven into by wire drawing, added when manufacture is Enter different dyes, just can make different colours sunshade net, change weft density, so that it may make the sunshade net of different shading rates.Hide Screened postive is mainly used in summer, the irradiation of anti-burning sun, the harm of high temperature, it has also become vegetables, flowers, edible mushroom, nursery stock, medicinal material etc. The technical measures mainly promoted that the protectiveness cultivation of crop and aquatic products, poultry farming high temperature-proof are protected.
At present, the sunshade net of market sale is based on black, also the light sunshade net in part.Black sunshade net mainly passes through Absorb sunlight and realize shading, light sunshade net is absorbed by selective reflecting realizes shading.Black sunshade net shading rate is high, have compared with Good cooling-down effect.But found in actual agricultural production, because black sunshade network technology and structural factor restrict, its shading, drop Temperature effect can't meet modern agricultural production demand simultaneously.For example, spinach is the cold-resistant plant that To Be Protected from Heat, summer is planted to environment It is required that it is harsh, cooling is realized, it is necessary to which very high shading rate could meet the needs that cool with traditional sunshade net, but sunshade net hides Light is too many, can influence the normal photosynthesis of spinach, influence plant nutrition Composition accumulation.
In a word, there is following defect in existing sunshade network technology：（1）Under sunshine, heat transfer is fast, and sunshade net own temperature is very high； （2）Common sunshade net and air or periphery object heat-shift are more；Easily lifting net ambient air temperature；（3）Black sunshade netlist Far infrared radiation amount caused by face is high；（4）Function is single, and shading, heat-insulated, cooling can not take into account simultaneously.
Therefore, there is not preferable heat radiation prevention net in agricultural production also.In transformation mode of agriculture, agricultural warp is improved Under benefit of helping and the background of energy-saving and emission-reduction, it is badly in need of a kind of astigmatism cooling heat radiation prevention net.
The content of the invention
The problem to be solved in the present invention is the deficiency for more than, there is provided a kind of preparation side of astigmatism cooling heat radiation prevention net Method, realize following goal of the invention：
（1）Astigmatism cooling heat radiation prevention net is prepared, in the case of full sun, makes its own temperature than conventional black sunshade net temperature Spend low 5-32 DEG C.
（2）Astigmatism cooling heat radiation prevention net is prepared, it is not easy that heat exchange occurs with surrounding environment.
（3）Astigmatism cooling heat radiation prevention net is prepared, good radiation cooling function is made it have, reduces caused by protection network Far infrared radiation.
（4）The heat-insulated heat radiation regulation and control film of astigmatism is prepared, makes it have higher sunshade, cooling-down effect.
For achieving the above object, using following technical scheme：
A kind of preparation method of astigmatism cooling heat radiation prevention net, including prepare master batch step.
It is the further improvement to above-mentioned technical proposal below:
It is described to prepare master batch step：In parts by weight, the component of the master batch includes：
Rutile type titanium white426 parts
299 parts of LDPE
212 parts of LLDPE
13 parts of oleamide
Cured 27 parts of PE
22 parts of far-infared ceramic powder
1 part of silane coupler.
It is described to prepare master batch step：In parts by weight, the component of the master batch includes：
24.8 parts of LDPE
5 parts of EVA
21 parts of LLDPE
0.8 part of TPU
42 parts of rutile type titanium white
2.7 parts of PE waxes
1.3 parts of oleamide
2.2 parts of far-infared ceramic powder
0.2 part of silane coupler.
It is described to prepare master batch step：In parts by weight, the component of the master batch includes：
37.6 parts of LDPE
13 parts of LLDPE
0.9 part of TPU
42 parts of rutile type titanium white
2.7 parts of PE waxes
1.2 parts of oleamide
2.2 parts of far-infared ceramic powder
0.4 part of silane coupler.
Described rutile type titanium white is：Du Pont titanium dioxide R-103, R-105, R-900, R-931 are by weight 3:2: 2:1 mixes.
Described far-infared ceramic powder：Active constituent content is 99%, and average grain diameter is less than 0.5 μm.
The preparation method also includes fiber and prepared.
Prepared by described fiber include traction shaping.
Described traction shaping：Draw ratio is 5-6, and cooling water temperature is 10-15 DEG C；
The width of obtained fiber is 3mm.
Described preparation method also includes establishment shaping；
Described knitting forming：Fiber is woven into networking with weaving loom.
The present invention compared with prior art, has the advantages that：
（1）Astigmatism cooling heat radiation prevention net prepared by the present invention, in the case of full sun, its own temperature hides than conventional black Screened postive temperature is low 5-32 DEG C.
（2）Astigmatism cooling heat radiation prevention net prepared by the present invention, in the case of full sun, compared with black sunshade net, Protection network of the present invention reduces 5%-32% with ambient air or agricultural facility heat exchange.
（3）Astigmatism cooling heat radiation prevention net prepared by the present invention, in the case of full sun, far infrared caused by its surface Radiation reduces 9%-60% than black sunshade net.
（4）The heat-insulated heat radiation prevention net of astigmatism prepared by the present invention, in the case of full sun, covering astigmatism cooling heat radiation Protection network improves 20%-40% compared with covering black sunshade net, to environment or earth's surface cooling-down effect；It can give and resist cold what To Be Protected from Heat The growth of crop summer provides low temperature environment and suitable illumination, hence it is evident that improves the quality and yield of the cold-resistant crop that To Be Protected from Heat, together When can also reduce pest and disease damage incidence 20-30%.
（5）The service life of astigmatism cooling heat radiation prevention net of the present invention is 4-5, and black sunshade net more normal than market makes With life 2 years, investment use cost is greatly reduced.
Embodiment
A kind of 1 astigmatism of embodiment cooling heat radiation prevention net
A kind of preparing raw material of described astigmatism cooling heat radiation prevention net mainly has：Film forming resinous material, high refractivity micro mist material Material, far infrared micropowder material.
（1）Described wide spectrum printing opacity, the resin material of low-refraction：
The resins such as PVC, HDPE, LDPE, LLDPE can be selected in film forming resinous material；
It is preferred that low density polyethylene (LDPE) (LDPE), density 0.915-0.940g/cm3, refractive index 1.51, at 7.0 ~ 13.0 μm The far infrared transmissivity of wave band is high, is approximate far infrared light penetrating object.
（2）Described high refractivity micropowder material：
Rutile type titanium white can be selected（Refractive index 2.73）, anatase thpe white powder（Refractive index 2.55）, vulcanization zinc powder（Refraction Rate 2.37）, antimony oxide micro mist（Refractive index 2.09-2.25）, zinc oxide ultra_fine powderses（Refractive index 2.02）, lithopone（Refractive index 1.84）；
It is preferred that rutile type titanium white, refractive index 2.73, density 4.26g/cm3, average grain diameter is not less than 0.6 μm, maximum Particle diameter is not more than 1 μm；
Described rutile type titanium white is by Du Pont titanium dioxide R-103, R-105, R-900, R-931 by weight 3:2:2:1 matches somebody with somebody System is formed, and average grain diameter is controlled between 0.6-1 μm.
（3）Described far infrared micropowder material：
It is superfine white powder for far infrared ceramic micro powder（Al2O3、MgO、ZnO、SiO2、ZrO2And the mixing of rare earth oxide Thing）, density:1.2-2g/cm3, for average grain diameter less than 0.5 μm, all-wave radiance is more than 0.9, is in 8-14 mu m waveband radiances 0.95。
A kind of preparation method of 2 astigmatism of embodiment cooling heat radiation prevention net
Step 1, prepare master batch
（1）Formula of master batch
The master batch parts by weight of raw materials of the astigmatism cooling heat radiation prevention net, which matches, is：
Rutile type titanium white426 parts
299 parts of LDPE
212 parts of LLDPE
13 parts of oleamide
Cured 27 parts of PE
22 parts of far-infared ceramic powder
1 part of silane coupler
Rutile type titanium white in the formula of master batch of above-mentioned astigmatism cooling heat radiation prevention net is：Du Pont titanium dioxide R-103, R- 105th, R-900, R-931 are by weight 3:2:2:1 mixes.
（2）Prepare astigmatism master batch
Formula of master batch according to astigmatism cooling heat radiation prevention net weighs LDPE, LLDPE, rutile type titanium white, PE waxes, oleic acid Acid amides, silane coupler, it is standby；
Above-mentioned load weighted raw material is added in single screw extrusion machine and carries out fusion plastification, is passed through from the material of head die extrusion Sizing, traction, cooling, cutting action are crossed, obtains astigmatism master batch；
The helical angle of described single screw extrusion machine is 17 °；Coolant water temperature is 28 DEG C in described refrigerating work procedure.
（3）Weigh far-infared ceramic powder
Far-infared ceramic powder is the commodity Masterbatch of purchase；
Described far-infared ceramic powder：Active constituent content is 99%, and average grain diameter is less than 0.5 μm；
Above-mentioned Masterbatch, weighed according to the formula of master batch of astigmatism cooling heat radiation prevention net, it is standby.
It is prepared by step 2, fiber
（1）Master batch batch mixing；By load weighted far-infared ceramic powder Masterbatch and the light scattering layer master batch prepared, batch mixing, stirring Uniformly；
（2）Traction shaping；The uniform master batch of batch mixing is added in injection machine, by traction, cooling and shaping process, obtains protection network Flat fiber；Draw ratio is 5-6, and cooling water temperature is 10-15 DEG C；The width of obtained flat fiber is 3mm.
Flat fiber reaches 94% or so to the scattered power of sunlight
Step 3, knitting forming
The flat fiber prepared is passed through to the braiding of protection network weaving loom, astigmatism cooling heat radiation prevention net is made；With protection The latitude of net is foundation through flat fiber radical in every 25 millimeters, is woven into 8 nets, 10 nets, 12 nets, 14 nets and 16 Net；Wide cut can be woven into 90 centimetres, 150 centimetres, 160 centimetres, 200 centimetres, 220 centimetres, 250 centimetres, 300 lis as needed Rice, the plurality of specifications such as 400 centimetres.
A kind of preparation method of 3 astigmatism of embodiment cooling heat radiation prevention net
Step 1, prepare master batch
(1) formula of master batch
The master batch parts by weight of raw materials of astigmatism cooling heat radiation prevention net, which matches, is：
24.8 parts of LDPE
5 parts of EVA
21 parts of LLDPE
0.8 part of TPU
42 parts of rutile type titanium white
2.7 parts of PE waxes
1.3 parts of oleamide
2.2 parts of far-infared ceramic powder
0.2 part of silane coupler
Rutile type titanium white in the formula of master batch of above-mentioned astigmatism cooling heat radiation prevention net is：Du Pont titanium dioxide R-103, R- 105th, R-900, R-931 are by weight 3:2:2:1 mixes.
（2）Prepare astigmatism master batch
Formula of master batch according to astigmatism cooling heat radiation prevention net weighs LDPE, LLDPE, rutile type titanium white, PE waxes, oleic acid Acid amides, EVA, TPU, silane coupler, it is standby；
Above-mentioned load weighted raw material is added in single screw extrusion machine and carries out fusion plastification, is passed through from the material of head die extrusion Sizing, traction, cooling, cutting action are crossed, obtains astigmatism master batch；
The helical angle of described single screw extrusion machine is 17 °；Coolant water temperature is 28 DEG C in described refrigerating work procedure.
（3）Weigh far-infared ceramic powder
Far-infared ceramic powder is weighed using the method for embodiment 2.
It is prepared by step 2, fiber
Flat fiber preparation is carried out using the method for embodiment 2.
Step 3, knitting forming
Using the method knitting forming of embodiment 2.
A kind of preparation method of 4 astigmatism of embodiment cooling heat radiation prevention net
Step 1, prepare master batch
(1) formula of master batch
The master batch parts by weight of raw materials of astigmatism cooling heat radiation prevention net, which matches, is：
37.6 parts of LDPE
13 parts of LLDPE
0.9 part of TPU
42 parts of rutile type titanium white
2.7 parts of PE waxes
1.2 parts of oleamide
2.2 parts of far-infared ceramic powder
0.4 part of silane coupler
Rutile type titanium white in the formula of master batch of above-mentioned astigmatism cooling heat radiation prevention net is：Du Pont titanium dioxide R-103, R- 105th, R-900, R-931 are by weight 3:2:2:1 mixes.
（2）Prepare astigmatism master batch
Formula of master batch according to astigmatism cooling heat radiation prevention net weighs LDPE, LLDPE, rutile type titanium white, PE waxes, oleic acid Acid amides, TPU, silane coupler, it is standby；
Above-mentioned load weighted raw material is added in single screw extrusion machine and carries out fusion plastification, is passed through from the material of head die extrusion Sizing, traction, cooling, cutting action are crossed, obtains diffusion layer master batch；
The helical angle of described single screw extrusion machine is 17 °；Coolant water temperature is 28 DEG C in described refrigerating work procedure.
（3）Weigh far-infared ceramic powder
Far-infared ceramic powder is weighed using the method for embodiment 2.
It is prepared by step 2, fiber
Flat fiber preparation is carried out using the method for embodiment 2.
Step 3, knitting forming
Using the method knitting forming of embodiment 2.
As a result detect：
（1）The astigmatism cooling heat radiation prevention net prepared to embodiment 2-4 carries out mechanical strength detection, and testing result is shown in Table 1；
Table 1
It is high from table 1, the high mechanical strength of astigmatism cooling heat radiation prevention net, sunshade rate；
The tensile strength of 8 nets：Warp-wise is 480-500 N/50mm, and broadwise is 490-520 N/50mm, and sunshade rate is 40-55%；
The tensile strength of 10 nets：Warp-wise is 490-520N/50mm, and broadwise 540-570N/50mm, sunshade rate is 55-65%；
The tensile strength of 12 nets：Warp-wise is 490-520N/50mm, and broadwise 600-640N/50mm, sunshade rate is 65-78%；
The tensile strength of 14 nets：Warp-wise is 490-520N/50mm, and broadwise 650-680N/50mm, sunshade rate is 80-90%；
The tensile strength of 16 nets：Warp-wise is 490-520N/50mm, and broadwise 730-770N/50mm, sunshade rate is 92-95%.
（2）Through experiment, astigmatism cooling heat radiation prevention net of the present invention has good astigmatism sunshade function, in full sun In the case of, sunlight hiding rare can reach 95%；
With good astigmatism heat insulating function, the flat fiber of astigmatism cooling heat radiation prevention net of the present invention reaches to the scattered power of sunlight To 94% or so；
With good radiation cooling function than black sunshade net surface temperature, low 25 DEG C or so of summer, the low 16 DEG C of left sides of season in spring and autumn It is right；
With higher cooling adumbral effect compared with black sunshade net, when summer sunshade rate is 40%-70%, cooling-down effect Improve 20%-30% or so.
（3）Through experiment, the service life of astigmatism cooling heat radiation prevention net of the present invention is 4-5, anti-for summer plantation Season vegetables plantation, can improve plantation survival rate 30-40%, improve yield of vegetables 20-28%, pest and disease damage incidence reduce 20- 30%。
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be with Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., it should be included in the guarantor of the present invention Within the scope of shield.

Claims (9)

  1. A kind of 1. agricultural facility preparation method of astigmatism heat radiation temperature control protection network, it is characterised in that：Including preparing master batch, fibre Prepared by dimension, knitting forming step；
    It is described to prepare master batch step：In parts by weight, the component of the master batch includes：
    LDPE 37-38 parts
    LLDPE 12.5-14 parts
    TPU 0.8-0.95 parts
    Rutile type titanium white 41-43 parts
    PE wax 2.6-2.8 parts
    Oleamide 1.0-1.5 parts
    Far-infared ceramic powder 2.0-2.5 parts
    Silane coupler 0.2-0.5 parts.
  2. 2. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    It is described to prepare master batch step：In parts by weight, the component of the master batch includes：
    37.6 parts of LDPE
    13 parts of LLDPE
    0.9 part of TPU
    42 parts of rutile type titanium white
    2.7 parts of PE waxes
    1.2 parts of oleamide
    2.2 parts of far-infared ceramic powder
    0.4 part of silane coupler.
  3. 3. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    Described LDPE：Density is 0.915-0.940g/cm3, refractive index 1.51；
    Described rutile type titanium white is：Du Pont titanium dioxide R-103, R-105, R-900, R-931 are by weight 3:2:2:1 is mixed Conjunction forms.
  4. 4. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    Described far-infared ceramic powder：Density:1.2-2g/cm3, average grain diameter is less than 0.5 μm, active constituent content 99%.
  5. 5. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    Described prepares master batch：Add the raw material into and fusion plastification is carried out in single screw extrusion machine, from the thing of head die extrusion For material by sizing, traction, cooling, cutting action, the helical angle of described single screw extrusion machine is 16-18 °；Described bosher Coolant water temperature is 25-30 DEG C in sequence.
  6. 6. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    Described traction shaping：Master batch is added in injection machine, by traction, cooling and shaping, draw ratio 5-6, cooling water Temperature is 10-15 DEG C；The width of obtained fiber is 3mm.
  7. 7. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    The flat fiber of the astigmatism cooling heat radiation prevention net reaches 94% to the scattered power of sunlight.
  8. 8. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：
    Described knitting forming：Fiber is woven into networking with weaving loom.
  9. 9. a kind of agricultural facility according to claim 1 preparation method of astigmatism heat radiation temperature control protection network, its feature It is：The astigmatism cooling heat radiation prevention net is used for the plantation of summer anti-season vegetables, in the case of full sun, sunlight hiding rare Reach 95%.
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CN112853522A (en) * 2021-01-07 2021-05-28 华中科技大学 Wet spinning radiation refrigeration fiber, preparation method and application thereof

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CN107574505A (en) 2018-01-12

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