CN1005417B - Polyolefin infrared heat-insulating film - Google Patents
Polyolefin infrared heat-insulating film Download PDFInfo
- Publication number
- CN1005417B CN1005417B CN87106797.8A CN87106797A CN1005417B CN 1005417 B CN1005417 B CN 1005417B CN 87106797 A CN87106797 A CN 87106797A CN 1005417 B CN1005417 B CN 1005417B
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- China
- Prior art keywords
- film
- parts
- infrared
- fly ash
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 3
- 239000012754 barrier agent Substances 0.000 claims description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 10
- 229920001684 low density polyethylene Polymers 0.000 claims description 10
- 239000004702 low-density polyethylene Substances 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- -1 polyethylene Polymers 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000010883 coal ash Substances 0.000 claims description 7
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 229920005672 polyolefin resin Polymers 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000001506 calcium phosphate Substances 0.000 claims description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 235000011010 calcium phosphates Nutrition 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 229960001866 silicon dioxide Drugs 0.000 claims description 2
- ACOGMWBDRJJKNB-UHFFFAOYSA-N acetic acid;ethene Chemical compound C=C.CC(O)=O ACOGMWBDRJJKNB-UHFFFAOYSA-N 0.000 claims 1
- 229940024545 aluminum hydroxide Drugs 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 239000001095 magnesium carbonate Substances 0.000 claims 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims 1
- 229960001708 magnesium carbonate Drugs 0.000 claims 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims 1
- 235000014380 magnesium carbonate Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002985 plastic film Substances 0.000 abstract description 6
- 229920006255 plastic film Polymers 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 3
- 239000002440 industrial waste Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 239000002981 blocking agent Substances 0.000 abstract 2
- 239000011324 bead Substances 0.000 abstract 1
- 238000010101 extrusion blow moulding Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002329 infrared spectrum Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229910018516 Al—O Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000005341 metaphosphate group Chemical group 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000010905 molecular spectroscopy Methods 0.000 description 1
- 230000000422 nocturnal effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Protection Of Plants (AREA)
Abstract
The invention relates to a polyolefin thermal insulation plastic film. The infrared blocking agent is composed of power plant fly ash glass beads serving as a main body or other inorganic powder, wherein the amount of the fly ash is less than 2 parts. Mixing with resin at a weight ratio of 100: 8-15 to obtain a film, which has the characteristic of absorbing infrared rays within the wavelength range of 7-25 microns, thereby reducing the heat radiation loss of a covered object and having a heat preservation effect. The industrial waste fly ash is used as the infrared blocking agent, so that the cost is reduced, and a new function of the fly ash is developed.
Description
The present invention relates to a kind of plastic insulation film.
As insulating plastic film, that widely applies has films such as polyethylene, polyvinyl chloride, because polyvinyl chloride plastic film density is big, cause film unit surface use cost to increase, and processing wide breadth film difficulty, temperature deformation is big, be easy to shortcomings such as loose, thereby eliminates gradually in agriculture production.Polyethylene film has that proportion is little, and temperature deformation is little, and complete processing simply can be made advantages such as wide-range film, thereby consumption grows with each passing day.But polyethylene film is as chamber covering material, and its disadvantage is the infrared transmittivity height, and night insulation is poor, particularly causes " the hot inversion effect " of greenhouse temperature that chamber crop is damaged to plants caused by sudden drop in temperature, thereby is restricted on using.The major cause that causes hot inversion effect be night soil and the heat of plant overflow with the radiation of infrared rays form, and polyethylene film infrared rays transmitance is imitated height, thereby cause the greenhouse nighttime temperature to reduce, even when outside air temperature during above zero, meeting frosting in the greenhouse, crop is damaged to plants caused by sudden drop in temperature, i.e. " the hot inversion effect " in so-called greenhouse.According to the whole country of spain hydro carbons FRPerdro of association " Spain is used for the special polyethylene film in greenhouse, tunnel " (international chemical industry and petrochemical technology equipment exhibition technical seminar) data introduction: the soil is as black matrix, at night mainly is the infrared radiation form emission energy of 2.5-25 micron with the wavelength, and the energy distribution curve when further having provided 5 ℃, this curve shows that infrared energy accounts for about 74% of sum in the 7-25 micrometer range.Therefore to improve the heat retaining property of film, just should be chosen in and extensively to absorb ultrared material in this wavelength region and add to as barrier agent and make plastics film in the resin with good heat retaining property.
The used infrared barrier agent of existing polyolefine insulation film made is adopted mostly and is added mineral filler as the silicate minerals powder, and metaphosphate, vitriol and some oxide compounds also have and add mica powder as barrier agent, as described in the clear 56-157443 of Japanese TOHKEMY.These materials as infrared barrier agent add in the polyolefin film and can improve heat insulation effect, but these additives are as industrial chemicals, or price is higher has increased the film cost, or does not have stable industrial source and be difficult to produce by batch, or has influenced the outdoor use of film because of water tolerance is relatively poor.
Task of the present invention is to seek a kind of low price, thereby the abundant material that good infrared absorption characteristic arranged in source is made a kind of insulating plastic film with polyolefin blend and reached the purpose that the reduction infrared transmittivity reduces cost.
Molecular spectroscopy is pointed out, certain chemical bond can only absorb the light of certain wavelength, the present invention is according to the particular range of wavelengths of various material molecule groups to infrared ray absorption, adopted infrared barrier agent, made in 7-25 micron wave length scope with the polyolefin resin blend and can extensively absorb ultrared insulating plastic film based on flyash.
Particularly, the flyash of the present invention's employing is that its chemical constitution is mainly the mixture of various silicate and silico-aluminate by the glass microballon below 10 microns of power plant's flue dust through sub-electing.This is the macromolecular structure material that a kind of polyatom is formed, the binding key of each si-O, Al-O atom is in the vibration constantly in its molecule, and in vibration, can change the moment of dipole of molecule, thereby having infrared active, this can be confirmed by observed infrared absorption peak from infrared absorption spectra.Fig. 1 is a kind of absorption spectrogram of typical flyash sample, mainly is absorbed with two places: 1100cm as can be seen from FIG. by force
-1-1000cm
-1And 460-560cm
-1
Because the flyash refractive index is not consistent with resin, the increase of flyash addition can cause film clarity to descend, therefore, suitably add some inorganicss as materials such as wollastonite, silicon-dioxide, diatomite, aluminium hydroxide, calcium phosphate, with the infrared breathability of powder coal ash glass-microballons compatibility composition infrared barrier agent can further reduction plastics film, improve the transmittance of visible light.Infrared barrier agent median size should be less than 10 microns, and its addition should be 8-15 part in 100 parts of weight polyolefin resines in plastics film, and wherein powder coal ash glass-microballons should be no less than 2 parts.
The used polyolefin resin matrix of the present invention can be that the blend of new LDPE (film grade) (Ml:0.3-7), linear low density polyethylene (Ml:1-2), ethylene-vinyl acetate copolymer (Ml:0.5-2) or its various ratios is to produce the film of different performance index.Wherein the adding of linear low density polyethylene can improve film strength, reduce thickness, and the adding of ethene-vinyl acetate can improve toughness and reduce infrared transmittivity.
By adjusting flyash and the content of compatibility component and the kind of conversion resin, can make the film of various different performances.Low as flyash amount high visible light transmissivity, the film that infrared transmittivity is also low uses this film because good heat preservation performance, the greenhouse nocturnal temperature improves, poor transparency, and daytime, room temperature reduced, having dwindled day and night temperature, is a kind of mushroom insulation film that is particularly suitable for edible fungus culturing.
Resistance of aging and anti-droplet in order to improve film can add some necessary auxiliary agents such as UV light absorber, oxidation inhibitor, antifogging agent, pigment etc., and commonly used has
1010, benzophenone, hindered amine, fatty acid ester etc., these additive dosages generally should be below 5 parts.
The plastic film complete processing can adopt concentrated mother material, extrusion-blown modling method, extrude technologies such as curtain coating makes film forming.
Embodiments of the invention are as follows:
Embodiment 1:
20 parts of new LDPE (film grade)s (Ml:2.0) are mixed with 15 parts of powder coal ash glass-microballonses, make the particle of φ 2 * 3-5, add 80 parts of above-mentioned polyethylene again, on extrusion blow molding machine, be blow molded into the thick film of 0.1mm with single screw extruder pelletizer.
Embodiment 2
With 10 parts of new LDPE (film grade)s (Ml:2), 10 parts of ethene-vinyl acetates and Ml:2) with 9 parts of powder coal ash glass-microballonses, 1 part of aluminium hydroxide, 2 parts of lime carbonate, 3 parts of siO2,3 parts of mixing of other auxiliary agent, pelletizing after open type plastic purificating set roll-in in flakes, add 60 parts of above-mentioned polyethylene and 20 parts of linear low density polyethylenes (Ml:2) pellet again, on extrusion blow molding machine, be blow molded into the thick film of 0.1mm.
Embodiment 3:
25 parts of new LDPE (film grade)s (Ml:7) are mixed with 2 parts of calcium phosphate with 5 parts of fly ash micro-spheres, 4 parts of wollastonites; make the particle of φ 2 * 3-5 with single screw extruder pelletizer, add 50 parts of polyethylene (Ml:2) and 25 parts of linear low density polyethylenes (Ml:2) are made 0.04mm with extrusion blow molding machine film.
Embodiment 4:
With 90 parts of new LDPE (film grade)s (Ml:2) and 2 parts of powder coal ash glass-microballonses, 4 parts of aluminium hydroxides, make the particle of φ 2 * 3-5 after 2 parts of mixing of 2 parts of diatomite and other auxiliary agents with single screw extruder pelletizer, make the thick film of 0.1mm with extrusion blow molding machine again.
The infrared spectrum of this film is seen Fig. 2 curve 2
Reference examples 1:
Make the 0.1mm thick film with 100 parts of new LDPE (film grade)s (Ml:2.0) with the extrusion-blown modling method.Infrared spectrum is seen Fig. 2 curve 1
Reference examples 2:
Mix with 70 parts of new LDPE (film grade)s (Ml:2), 20 parts of linear low density polyethylenes of 10 parts of ethene-vinyl acetates (Ml:2) (Ml:2), make the thick film of 0.1mm with the extrusion-blown modling method.
Reference examples 3:
Mix with 25 parts of linear low density polyethylenes (Ml:2) with 50 parts of new LDPE (film grade)s of 25 parts of new LDPE (film grade)s (Ml:7) (Ml:2), on extrusion blow molding machine, make the thick film of 0.04mm.
More than various films open the insulation can method that clear 56-1574433 introduces with the Japanese Patent spy and measure its heat-insulating property, the result is as shown in table 1:
See Table 1
Above data be in Shijiazhuang April in 1986-11 days on the 8th continuous 4 fine days measurement result.Therefrom the infrared transmittivity of embodiment descends significantly as can be seen, and heat retaining property is better than reference examples significantly, and night temperature on average is significantly improved.Meriting attention is because of the earth thermal capacitance is big, and actual soil button canopy temperature is than insulation can data height.In the spring edible fungus culturing, because ground temperature rise at night, favourable growth can be overcharged one batch.
The used infrared barrier agent of the present invention is that main body is equipped with composite components with flyash, make obtained plastics film have wide spectrum to absorb ultrared characteristic, thereby improved heat retaining property, because flyash belongs to three industrial wastes, other inorganics of Pei Heing also has abundant industrial source with it, low price, agent is added into the purpose that film can reach the saving resin, reduce cost as infrared barrier.Insulation film made of the present invention has the insulation and the dual-use function of sunshade, and the effect that has volume increase and gather in the crops in advance in agricultural planting particularly for the cultivation of edible mushrooms, has more volume increase, energy-conservation special efficacy.
Marginal data:
Fig. 1: a kind of typical powder coal ash glass-microballons infrared spectrum;
The infrared spectrum of the insulation film of Fig. 2: embodiment 4; (curve 2)
Reference examples 1 common polythene film infrared spectrogram.(curve 1)
Table 1
Visible light transmissivity infrared rays transmitance temperature on average at 4 day night
% % ℃
Embodiment 1 65.4 15.2 10.5
Embodiment 2 70.1 10.5 11.0
Embodiment 3 82.2 33.1 10.1
Embodiment 4 77.8 11.2 11.1
Reference examples 1 88.7 77.3 9.8
Reference examples 2 89.6 64.2 10.1
Reference examples 3 91.1 84.2 9.4
Claims (5)
1, a kind of plastic insulation film, by polyolefine, infrared barrier and other auxiliary agent are formed, and it is characterized in that containing in the said infrared barrier agent particle diameter less than 10 microns fly ash in electric power plant glass microballon.
2, according to the said film of claim 1, its content should be 8-15 part in 100 parts of weight polyolefin resines in film to it is characterized in that the infrared barrier agent, and wherein powder coal ash glass-microballons should be no less than 2 parts.
3, according to the said film of claim 1, it is characterized in that also can containing in the infrared barrier agent silicon-dioxide, aluminium hydroxide, magnesiumcarbonate, diatomite, calcium phosphate etc. less than 10 microns powder filler, or its blend.
4,, it is characterized in that polyolefin resin can be new LDPE (film grade) (MI0.3-7), linear low density polyethylene (MI:1-2), ethene-acetic acid polyethylene (MI:0.5-2) or its blend according to the said film of claim 1.
5,, it is characterized in that other auxiliary agent can be materials such as antiager, antifogging agent and pigment, its addition＜5% according to the said film of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106797.8A CN1005417B (en) | 1987-10-06 | 1987-10-06 | Polyolefin infrared heat-insulating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106797.8A CN1005417B (en) | 1987-10-06 | 1987-10-06 | Polyolefin infrared heat-insulating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032545A CN1032545A (en) | 1989-04-26 |
| CN1005417B true CN1005417B (en) | 1989-10-11 |
Family
ID=4815844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87106797.8A Expired CN1005417B (en) | 1987-10-06 | 1987-10-06 | Polyolefin infrared heat-insulating film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005417B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453569C (en) * | 2006-03-06 | 2009-01-21 | 南京大学 | High-specific-surface acrylates adsorption resin and synthesizing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987056A (en) * | 2017-04-25 | 2017-07-28 | 广东圆融新材料有限公司 | A kind of modified polypropene with heat-reflective and preparation method thereof |
| CN110564036A (en) * | 2019-08-27 | 2019-12-13 | 湖南登科材料科技有限公司 | rare earth doped modified plastic composite master batch and preparation method thereof |
-
1987
- 1987-10-06 CN CN87106797.8A patent/CN1005417B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453569C (en) * | 2006-03-06 | 2009-01-21 | 南京大学 | High-specific-surface acrylates adsorption resin and synthesizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032545A (en) | 1989-04-26 |
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