CN1579998A - Water-absorption, water-retaining functional membrane, and its production method and equipment - Google Patents
Water-absorption, water-retaining functional membrane, and its production method and equipment Download PDFInfo
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- CN1579998A CN1579998A CN 200410037971 CN200410037971A CN1579998A CN 1579998 A CN1579998 A CN 1579998A CN 200410037971 CN200410037971 CN 200410037971 CN 200410037971 A CN200410037971 A CN 200410037971A CN 1579998 A CN1579998 A CN 1579998A
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Abstract
The invention relates to water absorbing and preserving function membrane. A layer of water absorbing and preserving function material is sprayed on common plastic film. The absorbing and preserving function material is made up with polymers, solvent, adhesive and surface active agent. Its producing equipment includes press roll, rolling machine, surface treatment equipment, brace and overlay film machine. Thereinto, two grades press roll is installed behind original film. Surface treatment equipment and overlay film machine are set behind two grades press roll. Supporting roller is installed at both sides of overlay film machine. Rolling machine is powered by electromotor. The membrane can be used in concrete maintenance, crop covering and other place that has a high requirement of preserving water. The production has a excellent performance and its production process is completely automatic.
Description
Technical field
The present invention relates to a kind of water-absorbing-retaining effect that has, be specially adapted to building field and when building highway, bridge, do to make functional film material and production method and the production unit that ground cover film uses in areas of serious or to the occasion that water conservation is had relatively high expectations on cement water-preserving curing film and the agricultural.
Background technology
Film with water-absorbing-retaining effect is widely used in industrial and agricultural production, at first from building concrete construction aspect, the preserving period that two weeks to month is arranged after the building concrete pouring usually, coverings such as general employing gunnysack, sawdust or straw on the engineering, then every a few hours trickle once to keep moistening, thereby make the abundant aquation of cement, to reach the purpose of maintenance.This method need expend a large amount of water, electricity, oil and manpower, and needs special fortune water conservancy project tool.
Again from agriculture production, many lands for growing field crops are after crop seeding or in vegetative period, all need moisture-heat preservation, past covers plastics films such as layer of polyethylene or polyvinyl chloride usually at cultivated land, this class plastics film itself there is no suction and water retention property, mainly utilizes the relatively poor characteristics of its permeability to hinder the evaporation of moisture content in the soil on the agricultural.But because resistance to air loss is limited.This class film can only be used for the comparatively abundant area of those rainfall or have the crop ped location of certain irrigation conditions, and area less to those rainfall amounts and that irrigation conditions is relatively poor then is difficult to obtain the ideal humidity-holding effect.
We are through Indexing of Scien. and Tech. Literature, recognize that open source literature in recent years reported the production method of some water-preserving curing film for concrete and agricultural degradative membrane, as 1, Chinese patent＜application number〉00126699,＜denomination of invention〉a kind of water-preserving curing film for concrete＜digest〉the present invention relates to a kind of cement pavement of building, the water-preserving curing film for concrete that concrete pouring phase in fields such as bridge uses is the starch by modification that are adhesive with 10～30 grams on the thin-film carrier that every square metre of natural or synthon or the mixture of the two are made, Mierocrystalline cellulose, one or two or more kinds absorbent material layer of making of protein or some hydrophilic long-chain compound.Use this kind curing film can need not water at 10-72 hour after the concrete casting, can reduce water, electricity, resource 5-10 such as artificial doubly, also reduced the loss of equipment.2, Chinese patent＜application number〉01257450,＜denomination of invention〉water-preserving curing film for concrete＜digest〉the utility model discloses a kind of water-preserving curing film for concrete.It comprises that one deck is by being adhesive with the absorbent material layer of being made by starch, Mierocrystalline cellulose, protein or some hydrophilic long-chain compound of modification on natural or the synthon film, the top of absorbent material layer is provided with the film of one deck punching as last film, and the below of absorbent material layer is provided with the plastics film of one deck punching as following film.Use this kind curing film improved greatly work-ing life, transportation and use convenient, once water behind the sufficient water and need not water in 18-36 hour, improved maintenance effect.3, Water-Permeable Plastic Mulching Film [author] Yao builds the kind Yang Ruiping in people Yin Dynasty sea [periodical name] plastics .2003,32 (3) .[digests] set forth development background, main point of production technology and the product performance index of water-permeability plastic film.There are two kinds to use future as a kind of little penetrating film, the one, be used for the farmland and cover, can improve soil, water, fertilizer, gas, thermal environment, can improve the light rain resource utilization, the increasing crop yield effect reaches about 20%; The 2nd, be used for storage fruit and vegetable, can effectively get rid of CO
2Deng obnoxious flavour and inhibition O
2Dividing potential drop is suitable for the fresh-keeping of fruits and vegetables such as bright jujube class.
Summary of the invention
The object of the present invention is to provide that a kind of production is easy, the more significant water-absorbing-retaining functional membrane of water conservation and moisture-holding effect and production method and production unit, water-absorbing-retaining functional membrane of the present invention does not need compacting and oven dry in process of production, and its water retention can reach 80%, the water conservation time reaches more than 100 hours.Particularly suitable is made the cement conservation film and is made agricultural ground cover film in areas of serious or to the occasion that water conservation is had relatively high expectations.
Water-absorbing-retaining functional membrane of the present invention is to apply the tectum that has than the strong absorptive energy on common plastic film, and this tectum comprises macromolecular material and solvent, tackiness agent and tensio-active agent, and each material composition and parts by weight are as follows:
Macromolecular material 50-85, solvent 10-30, tackiness agent 3-15, tensio-active agent 0.1-5.
Above-described common plastic film is meant the film that a kind of of high pressure, low-pressure polyethylene film, polyvinyl chloride, polypropylene, polyester or their blend are made;
Above-described macromolecular material is selected a kind of, two or more the mixture in modified starch, derivatived cellulose, polyacrylamide, polyacrylic acid, polyoxyethylene, polymaleic acid, chitosan, the xanthan gum for use.
Above-described solvent comprises a kind of, two or more the mixture of water, methyl alcohol, ethanol, ethylene glycol, propylene glycol, glycerol.
Above-described tackiness agent comprises a kind of, two or more the mixture based on polyvinyl acetate (PVA), polyvinyl alcohol or derivatives thereof, aqueous polyurethane, polyacrylic ester, polyvinylpyrrolidone.
Above-described tensio-active agent comprises this a kind of, two or more mixture of alkyl benzene sulphonate (ABS) or its sodium salt, sodium alkyl sulfate, alkylolamide, polyoxyethylene and derivative thereof, tween, department.
Water-absorbing-retaining functional membrane of the present invention is the functional substance that applies 2～25g on surface treated every square metre common plastic film, and determines whether perforate on film according to the purposes needs.
The production method of water-absorbing-retaining functional membrane of the present invention is based on the common plastic film material, can add mineral filler and plastics additive, after common inflation film manufacturing machine blowing film forming, earlier carry out surface treatment on the surface of film, film surface coating functions material after using machinery or automatic gear or equipment with surface treatment is then produced the water-absorbing-retaining functional membrane of superior performance.
Above-described surface treatment comprises polishing, perforation, gluing, surface chemistry and/or photochemical modification, the surface physics processing to film surface.
Water-absorbing-retaining functional membrane production unit of the present invention comprises pressure roller, coiler, surface processing device, support, overlay film device, behind its Central Plains film the two-stage pressure roller is installed, be provided with surface processing device and overlay film device after the secondary pressure roller, back-up roller is equipped with on overlay film device both sides, be coiler at last, the coiler motor drives.Pressure roller, coiler, surface processing device, overlay film device are installed on the unified support, perhaps are installed in respectively on the independent support.
The principle of work of this water-absorbing-retaining functional membrane production unit is: former film (as films such as polyethylene, polypropylene, polyester) makes the certain elasticity of its maintenance and enough planeness through the stretch-draw of two-stage pressure roller, carry out suitable physics and chemical treatment (comprising polishing, perforation, gluing, chemical surface modification, physical surface treatment etc.) at the surface processing device place, enter the overlay film device then, the material of needs is injected from hopper, cover film surface equably, by the coiler rolling, obtain the finished product functional membrane at last.
Description of drawings
Fig. 1 is a water-absorbing-retaining functional membrane production unit structure diagram of the present invention.
As shown in Figure 1, whole plant by former film 1, two-stage pressure roller 2 and 3, surface processor 4 and overlay film device (comprising hopper 5 and hopper frame 6), back-up roller 7 and coiler 8 totally eight integral parts form.Pressure roller, coiler, surface processing device, overlay film device can be installed on the unified support, also can be installed in respectively on the independent support.
The present invention compared with prior art, its outstanding substantive distinguishing features and obvious improvement is:
(1) water-absorbing-retaining functional membrane of the present invention is the product innovation that is different from existing curing film, do not need compacting and oven dry during preparation, do not need complicated three-decker, with the common plastic film is that base material thereby raw material sources are more convenient, price is more cheap, and its water retention can reach 80%, the water conservation time reaches more than 100 hours.
(2) machinery of the present invention or the device and the equipment that apply the water-absorbing-retaining functional materials automatically have versatility, not only can produce the water-absorbing-retaining functional membrane, by the raw material and the prescription of the coated functional materials of conversion, can also produce functional film with various specific end use.
(3) water-absorbing-retaining functional membrane of the present invention uses flexible and convenient, low price, is fit to industrialized requirement, meets the service requirements of Application Areas fully.
Embodiment
Embodiment 1: 1000 square metres of high-pressure polyethylene films getting thickness and be 0.008mm, polyacrylamide 10kg, pelopon A 10g, polyvinyl acetate (PVA) 1kg, after punching on the functional membrane production unit, carry out surface treatment with sodium dodecyl benzene sulfonate aqueous solution and polyvinyl acetate (PVA) successively, then the polyacrylamide powder evenly is coated on the film surface of having handled, obtain having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 100 hours.
Embodiment 2: 1000 square metres of low-pressure polyethylene films getting thickness and be 0.015mm, modified starch 20kg, aqueous polyurethane 5kg, after punching on the functional membrane production unit, use urethane carries out surface treatment, then the modified starch powder evenly is coated on the film surface of having handled, obtains having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 110 hours.
Embodiment 3: 1000 square metres of low-pressure polyethylene films getting thickness and be 0.015mm, carboxymethyl cellulose 15kg, aqueous polyurethane 5kg, after punching on the functional membrane production unit, use urethane carries out surface treatment, then the modified starch powder evenly is coated on the film surface of having handled, obtains having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 100 hours.
Embodiment 4: 1000 square metres of polypropylene films getting thickness and be 0.008mm, xanthan gum 5kg, polyacrylic acid 5kg, after punching on the functional membrane production unit, carry out surface treatment with polyacrylic acid solution, then the xanthan gum powder evenly is coated on the film surface of having handled, obtains having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 120 hours.
Embodiment 5: 1000 square metres of high-pressure polyethylene films getting thickness and be 0.010mm, polyoxyethylene 10kg, polymaleic acid 5kg, chitosan 1kg, after punching on the functional membrane production unit, carry out surface treatment with UV-light and polyoxyethylene successively, then polymaleic acid and chitosan powder evenly are coated on the film surface of having handled, obtain having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 120 hours.
Embodiment 6: get 1000 square metres of the high and low pressure polyethylene that thickness is 0.005mm (blend) films, modified starch 10kg, polyacrylic acid 2kg, polyoxyethylene 1kg, after punching on the functional membrane production unit, carry out surface treatment with polishing, electric arc and polyoxyethylene successively, then modified starch and polyacrylic acid powder evenly are coated on the film surface of having handled, obtain having the concrete road surface curing film of water-absorbing-retaining effect, its water conservation time can reach more than 120 hours.
Embodiment 7: get 1000 square metres of the high-pressure polyethylene that thickness is 0.005mm (blend) films, modified starch 10kg, polyacrylic acid 2kg, polyoxyethylene 1kg, on the functional membrane production unit, carry out surface treatment through polishing and polyoxyethylene, then modified starch and polyacrylic acid powder evenly are coated on the film surface of having handled, obtain having the plastic sheeting for farm use of water-absorbing-retaining effect, be used to cover watermelon.Its water conservation time can reach more than 240 hours.
Embodiment 8: get 1000 square metres of the high and low pressure polyethylene that thickness is 0.008mm (blend) films, xanthan gum 10kg, carboxymethyl cellulose 2kg, polyoxyethylene 1kg, on the functional membrane production unit, carry out surface treatment, then modified starch and carboxymethyl cellulose powder evenly be coated on the film surface of having handled through polishing and polyoxyethylene, obtain having the water-absorbing-retaining effect plastic sheeting for farm use, be used for covering the fruit seedling, its water conservation time can reach more than 240 hours.
Claims (9)
1, a kind of water-absorbing-retaining functional membrane, it is characterized in that: it is to apply the tectum that has than the strong absorptive energy on common plastic film, this tectum comprises macromolecular material and solvent, tackiness agent and tensio-active agent, and each material composition and parts by weight are as follows:
Macromolecular material 50-85, solvent 10-30, tackiness agent 3-15, tensio-active agent 0.1-5.
2, water-absorbing-retaining functional membrane according to claim 1 is characterized in that: common plastic film is meant the film that a kind of of high pressure, low pressure polyethylene, polyvinyl chloride, polypropylene, polyester plastics or their blend are made;
3, water-absorbing-retaining functional membrane according to claim 1 is characterized in that: described macromolecular material is selected a kind of, two or more the mixture in modified starch, derivatived cellulose, polyacrylamide, polyacrylic acid, polyoxyethylene, polymaleic acid, chitosan, the xanthan gum for use.
4, water-absorbing-retaining functional membrane according to claim 1 is characterized in that: described solvent comprises a kind of, two or more the mixture of water, methyl alcohol, ethanol, ethylene glycol, propylene glycol, glycerol.
5, water-absorbing-retaining functional membrane according to claim 1 is characterized in that: described tackiness agent comprises a kind of, two or more the mixture based on polyvinyl acetate (PVA), polyvinyl alcohol or derivatives thereof, aqueous polyurethane, polyacrylic ester, polyvinylpyrrolidone.
6, water-absorbing-retaining functional membrane according to claim 1 is characterized in that: described tensio-active agent comprises this a kind of, two or more mixture of alkyl benzene sulphonate (ABS) or its sodium salt, sodium alkyl sulfate, alkylolamide, polyoxyethylene and derivative thereof, tween, department.
7, the production method of water-absorbing-retaining functional membrane as claimed in claim 1, it is characterized in that: based on the common plastic film material, can add mineral filler and plastics additive in the plastics, after common inflation film manufacturing machine blowing film forming, earlier carry out surface treatment on the surface of film, film surface after using machinery or automatic gear or equipment with surface treatment then applies water-absorbing-retaining functional membrane material, produces the water-absorbing-retaining functional membrane.
8, the production method of water-absorbing-retaining functional membrane according to claim 7 is characterized in that: described surface treatment comprises polishing, perforation, gluing, surface chemistry and/or photochemical modification, the surface physics processing to film surface.
9, the production unit of water-absorbing-retaining functional membrane as claimed in claim 1, it is characterized in that: it comprises pressure roller, coiler, surface processing device, support, overlay film device, behind its Central Plains film the two-stage pressure roller is installed, be provided with surface processing device and overlay film device after the secondary pressure roller, back-up roller is equipped with on overlay film device both sides, be coiler at last, the coiler motor drives, pressure roller, coiler, surface processing device, overlay film device are installed on the unified support, perhaps are installed in respectively on the independent support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037971 CN1579998A (en) | 2004-05-18 | 2004-05-18 | Water-absorption, water-retaining functional membrane, and its production method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037971 CN1579998A (en) | 2004-05-18 | 2004-05-18 | Water-absorption, water-retaining functional membrane, and its production method and equipment |
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| CN1579998A true CN1579998A (en) | 2005-02-16 |
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| CN 200410037971 Pending CN1579998A (en) | 2004-05-18 | 2004-05-18 | Water-absorption, water-retaining functional membrane, and its production method and equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979227A (en) * | 2010-10-14 | 2011-02-23 | 广西信达高速公路有限公司 | Production and construction method for cement concrete water-retaining curing film |
| CN102703191A (en) * | 2012-05-16 | 2012-10-03 | 阳泉昌达混凝土搅拌站 | Preparation method of concrete pump lubrication agent |
| CN105965679A (en) * | 2016-07-01 | 2016-09-28 | 长沙圣华科技发展有限公司 | Concrete curing film production technology and production equipment thereof |
| CN107746470A (en) * | 2017-10-27 | 2018-03-02 | 常德金德新材料科技股份有限公司 | Anti-mildew fresh-keeping film and preparation method thereof |
| CN108516865A (en) * | 2018-03-27 | 2018-09-11 | 河北建设集团股份有限公司 | A kind of multifunctional concrete curing agent and its preparation method and application |
| CN109571732A (en) * | 2018-12-05 | 2019-04-05 | 湖南圣华节水科技股份有限公司 | A kind of concrete curing film hole pricking device |
| CN109856374A (en) * | 2018-12-26 | 2019-06-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of concrete self-shrinkage test method |
| CN113061277A (en) * | 2021-04-27 | 2021-07-02 | 杭州圣立新材料有限公司 | Biodegradable intelligent water-permeable moisturizing film and preparation method and application thereof |
-
2004
- 2004-05-18 CN CN 200410037971 patent/CN1579998A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979227A (en) * | 2010-10-14 | 2011-02-23 | 广西信达高速公路有限公司 | Production and construction method for cement concrete water-retaining curing film |
| CN101979227B (en) * | 2010-10-14 | 2013-09-25 | 广西信达高速公路有限公司 | Production and construction method for cement concrete water-retaining curing film |
| CN102703191A (en) * | 2012-05-16 | 2012-10-03 | 阳泉昌达混凝土搅拌站 | Preparation method of concrete pump lubrication agent |
| CN105965679A (en) * | 2016-07-01 | 2016-09-28 | 长沙圣华科技发展有限公司 | Concrete curing film production technology and production equipment thereof |
| CN105965679B (en) * | 2016-07-01 | 2019-09-20 | 湖南圣华节水科技股份有限公司 | Concrete curing film production process and its production equipment |
| CN107746470A (en) * | 2017-10-27 | 2018-03-02 | 常德金德新材料科技股份有限公司 | Anti-mildew fresh-keeping film and preparation method thereof |
| CN107746470B (en) * | 2017-10-27 | 2021-03-26 | 常德金德新材料科技股份有限公司 | Mildew-proof preservative film and preparation method thereof |
| CN108516865A (en) * | 2018-03-27 | 2018-09-11 | 河北建设集团股份有限公司 | A kind of multifunctional concrete curing agent and its preparation method and application |
| CN109571732A (en) * | 2018-12-05 | 2019-04-05 | 湖南圣华节水科技股份有限公司 | A kind of concrete curing film hole pricking device |
| CN109856374A (en) * | 2018-12-26 | 2019-06-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of concrete self-shrinkage test method |
| CN109856374B (en) * | 2018-12-26 | 2022-02-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Concrete self-shrinkage test method |
| CN113061277A (en) * | 2021-04-27 | 2021-07-02 | 杭州圣立新材料有限公司 | Biodegradable intelligent water-permeable moisturizing film and preparation method and application thereof |
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