CN105382911A - Manufacturing method for crop straw building external wall heat insulation plate - Google Patents
Manufacturing method for crop straw building external wall heat insulation plate Download PDFInfo
- Publication number
- CN105382911A CN105382911A CN201510746497.6A CN201510746497A CN105382911A CN 105382911 A CN105382911 A CN 105382911A CN 201510746497 A CN201510746497 A CN 201510746497A CN 105382911 A CN105382911 A CN 105382911A
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- CN
- China
- Prior art keywords
- crop straw
- wall heat
- agricultural crop
- exterior wall
- heat preserving
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/143—Orienting the particles or fibres
Abstract
The invention provides a manufacturing method for a crop straw building external wall heat insulation plate. The method includes the steps that wheat straw, rice straw, cotton stalks and other agricultural leftovers are used as the raw materials; the technological processes of chopping smashing, mixing opening, airflow laying, acupuncturing felt forming, gluing sizing and curing, inflaming retarding, corrosion and mildew preventing treating, dicing molding and the like are conducted; and finally the light and durable building external wall heat insulation plate with the inflaming retarding and sound insulating functions is manufactured. Development of green buildings of our country is facilitated, energy consumption of buildings is greatly lowered, and efficient and high-additive value recycling of crop straw is achieved.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of agricultural crop straw to prepare the method for building exterior wall heat preserving sheet material.
Background technology
In modern architecture, the energy consumption of building accounts for more than 30% of total energy consumption.For reducing carbon emission, building energy-saving is extremely important.In order to reach good building energy conservation requirement, in modern architecture, the isothermal holding of exterior wall is adopted to be one of measure of indispensability.Current popular external wall insulation is mainly the formation such as EPS (expanded polystyrene foamed plastics), XPS (extrusion type polystyrene foam plastics), PUR (rigid polyurethane foam) and PIR (hard polyisocyanate foam plastics).The major defect of these materials is inflammable (although there is the combustion of part difficulty, also having the larger amount of being fuming), and combustion gas is poisonous, very big to the harmfulness of human body.And raw material is mainly high-carbon, the non-renewable and petrochemical material that recycles, price is also high.Therefore, manufacturing building exterior wall heat preserving plate with abundant and biological material petroleum replacing base product that is renewable and circulation should be an important developing direction.
Agricultural crop straw is the discarded residue produced in China's agricultural production.Still there is no at present good processing method and utilize by way of, main or on-site incineration, therefore causes the environmental problem that flue dust and haze etc. are serious, therefore solves the problem of environmental pollution that China produces because of crop straw burning very urgent.
Summary of the invention
The invention provides a kind of manufacture method of agricultural crop straw building exterior wall heat preserving sheet material.The method with a large amount of agricultural crop straw residue of China for raw material, be made into by a series of technical process and there is fire-retardant and light weight durable building outer wall warming plate that is sound insulation function, substitute traditional foamed plastics, not only can save the fossil resources that plastics etc. are non-renewable in a large number, also significantly can reduce the environmental pollution because burning agricultural stalk causes, for the conservation culture of China is made contributions simultaneously.
The technical solution adopted in the present invention is:
A kind of agricultural crop straw building exterior wall heat preserving preparation of plates method, the method take agricultural crop straw as raw material, by cutting hand hay cutter pulverization process, mixing shredding, airflow pavement, acupuncture becomes the technical process such as felt, applying glue solidification and fire-retardant and anticorrosion/mildew-resistant process, cutting block forming, finally makes and has fire-retardant and light weight durable building exterior wall heat preserving plate that is sound insulation function.
Raw material stalk is a kind of or several arbitrarily mixing in the various agricultural crop straws such as wheat straw, rice straw, cotton stalk.Concrete preparation process is as follows:
(1) cut hand hay cutter pulverization process: used by stalk and variously cut the short material of stalk that straw is become fiber, wood shavings and various different size by hand hay cutter machine and pulverizer, the short material of stalk generally refers to that length is at the crushed straw aggregate of 3-5 centimetre.
(2) mix shredding: the synthetic fibers adding the short material weight 10-30% of stalk in the short material of stalk, use mixing shredding machinery to carry out mixing shredding, make to become Homogeneous phase mixing material.Described synthetic fibers are the one in polyethylene, polypropylene, polyester.Compared with conventional artificial's board device, the advantage of on-woven equipment is adopted to be the long and short fiber being difficult to according to a conventional method mix can be mixed equably.
(3) airflow pavement: use assorted fibre Solution on Air Forming Equipment to mat formation, according to the size of material form and the amount of feeding, regulates intake, makes it to reach regulation slab thickness, form equally distributed assorted fibre slab.This step can mix the long and short fiber being difficult to mix uniformly, meets production requirement expeditiously.
(4) acupuncture becomes felt: use needing machine to carry out the needling treatment of two to three times, needling density is every square centimeter of 5-10 root, makes mixed fibre felt.Acupuncture becomes the fragmentary stalk fibre that felt can not be shaping to make the felt with certain form and intensity.
(5) applying glue solidification and fire-retardant and anticorrosion/mildew-resistant process, can adopt in two ways: or added being mixed with the composite adhesive of fire retardant with anticorrosion/mould inhibitor in the mixed fibre felt that acupuncture becomes felt to obtain by glue spraying or impregnation or gluing mode, then undertaken hot-forming by hot-pressing processing mode; Or adhesive added in the mixed fibre felt that acupuncture becomes felt to obtain by glue spraying or impregnation or gluing mode, undertaken hot-forming by hot-pressing processing mode, then spray coated flame retardant agent, anticorrosion/mould inhibitor.
Described adhesive add the 5-10% that weight is mixed fibre felt, described fire retardant and anticorrosion/mould inhibitor add the 10-15% that weight is mixed fibre felt.
Described adhesive is the mixing of one or more in phenolic resins, resorcinol resin, isocyanates.
Described fire retardant is the combination of one or more in phosphorus-nitrogen containing flame retardant, intumescent flame retardent.Described anticorrosion/mould inhibitor is boron system and halogen and other organic and inorganic anti-corrosion/mould inhibitor.Can be arbitrary proportion between fire retardant and anticorrosion/mould inhibitor, specifically determine according to actual user demand.
The hot pressing temperature of described hot-pressing processing is 100-200 DEG C (being preferably 100-160 DEG C), and plate face hot pressing pressure is 0.1-5.0MPa (being preferably 0.1-2.0MPa), and the processing time is 10-40 minute (being preferably 15-30 minute).The object of applying glue solidification is the felt intensity increasing stalk fibre further, makes it reach the intensity index requirement of building exterior wall heat preserving plate; Fire-retardant and anticorrosion/mildew-resistant process is the fire-protection rating and the useful life longevity that improve this product further.
Compared with prior art, the present invention has following remarkable advantage and beneficial effect:
(1) with the discarded residue stalk of agricultural production for main material, realize effective utilization of waste material, greatly reduce the energy consumption of building, realize the efficient of agricultural crop straw and high additive value recycling, to promote the development of China's green building;
(2) use cheap reproducible biological material, production cost is low;
(3) with a large amount of agricultural crop straw residue of China for raw material, the light weight durable building exterior wall heat preserving sheet material of fire-retardant and sound insulation function is become the on-woven technical process of felt to be made into have by mixing shredding, air lay, acupuncture, to substitute traditional foamed plastics, not only can save the fossil resources that plastics etc. are non-renewable in a large number, also significantly can reduce the environmental pollution because burning agricultural stalk causes simultaneously;
(4) current external wall insulation is mainly the foamed plastics such as EPS, XPS, the petrochemical material being the non-renewable of high-carbon He recycling, and price is higher; With abundant and cheap biological material petroleum replacing base product that is renewable and circulation manufactures building exterior wall heat preserving sheet material, not only can solve the problems such as the inflammable and price of current China wall thermal insulation board is high, and due to the utilization of agricultural crop straw can the serious environmental problems that causes because of stalk on-site incineration of partial rcsponse.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described in detail.Iting is noted that following illustrating is all exemplary, being intended to the invention provides further instruction.Except as otherwise noted, all Science and Technology terms that the present invention uses have the identical meanings usually understood with the technical field of the invention personnel.
Embodiment 1:
Wheat straw stalk cuts the short material cutting up with a hay cutter into 5 cm, then becomes needle-like wood shavings particle by mechanical crushing such as ring flakers.Then, by synthetic fibers (synthetic fibers addition is 10% of material total amount) such as crushed straw aggregate and polyester (or polyethylene, polypropylene), carry out twice mixing shredding by mixing opener, be made into crushed straw aggregate/synthetic fibers Homogeneous phase mixing material.This compound is mated formation through assorted fibre Solution on Air Forming Equipment, makes equally distributed assorted fibre slab.Slab is made mixed fibre felt by the needing machine acupuncture of two to three times again.Mixed fibre felt sprays the composite adhesive (composite adhesive consumption is 15% of material total amount) being mixed with fire retardant and anticorrosion/mould inhibitor, again through hot pressing (temperature 140 DEG C, plate face hot pressing pressure 0.5MPa, 20 minutes time) make in mixed fibre felt composite adhesive solidifying and setting, then make building exterior wall heat preserving plate through tailoring.
Embodiment 2:
Wheat straw cuts with the mixed straw (arbitrary proportion) of rice straw the short material cutting up with a hay cutter into 5 cm, is making wood shavings particle by beater grinder.Particle is sieved, after removing tiny powder, by synthetic fibers (synthetic fibers addition is 15% of material total amount) such as itself and polyester (or polyethylene, polypropylene), carry out twice mixing shredding by mixing opener, be made into crushed straw aggregate/synthetic fibers Homogeneous phase mixing material.This compound is mated formation through assorted fibre Solution on Air Forming Equipment, makes equally distributed assorted fibre slab.Slab is made mixed fibre felt by the needing machine acupuncture of two to three times again.Mixed fibre felt sprays synvaren (adhesive consumption is 10% of material total amount), again through hot pressing (temperature 130 DEG C, plate face hot pressing pressure 0.2MPa, 30 minutes time) make the adhesive solidification in mixed fibre felt shaping.Plate surface after shaping being distinguished spray coated flame retardant agent, anticorrosion/mould inhibitor and setting agent again, making building exterior wall heat preserving plate through tailoring.
The material that the embodiment of the present invention relates to, reagent and experimental facilities, if no special instructions, be the commercially available prod meeting building exterior wall heat preserving plate technique field.
The above, be only the preferred embodiments of the present invention, should be understood that; for those skilled in the art; under the prerequisite not departing from core technology of the present invention, can also make improvements and modifications, these improvements and modifications also should belong to scope of patent protection of the present invention.Any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (10)
1. an agricultural crop straw building exterior wall heat preserving preparation of plates method, it is characterized in that: take agricultural crop straw as raw material, by cutting hand hay cutter pulverization process, mixing shredding, airflow pavement, acupuncture become felt, applying glue solidification and fire-retardant and anticorrosion/mildew-resistant process, cutting block forming, make the durable lightweight wall thermal insulation board of flame retardant type.
2. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 1, it is characterized in that: described mixing shredding refers to the synthetic fibers adding 10-30% weight ratio, use mixing shredding machinery to carry out mixing shredding, make to become Homogeneous phase mixing material.
3. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 2, is characterized in that: described synthetic fibers are the one in polyethylene, polypropylene and polyester.
4. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 1, it is characterized in that: described airflow pavement refers to and uses assorted fibre Solution on Air Forming Equipment to mat formation, according to the size of material form and the amount of feeding, regulate intake to reach regulation slab thickness, make the equally distributed assorted fibre slab of formation.
5. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 1, it is characterized in that: described acupuncture becomes felt to refer to the needling treatment using needing machine to carry out two to three times, needling density is every square centimeter of 5-10 root, makes mixed fibre felt.
6. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 1, it is characterized in that: described applying glue solidification and fire-retardant and anticorrosion/mildew-resistant process are referred to and to be added being mixed with the composite adhesive of fire retardant with anticorrosion/mould inhibitor in the mixed fibre felt that acupuncture becomes felt to obtain by glue spraying or impregnation or gluing mode, are then undertaken hot-forming by hot-pressing processing mode.
7. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 1, it is characterized in that: described applying glue solidification and fire-retardant and anticorrosion/mildew-resistant process refer to and to be added by adhesive in the mixed fibre felt that acupuncture becomes felt to obtain by glue spraying or impregnation or gluing mode, undertaken hot-forming by hot-pressing processing mode, then spray coated flame retardant agent, anticorrosion/mould inhibitor.
8. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 6 or 7, it is characterized in that: described adhesive add the 5-10% that weight is mixed fibre felt, described fire retardant and anticorrosion/mould inhibitor add the 10-15% that weight is mixed fibre felt.
9. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 6 or 7, is characterized in that: described adhesive is the mixing of one or more in phenolic resins, resorcinol resin and isocyanates.
10. the preparation method of a kind of agricultural crop straw building exterior wall heat preserving plate according to claim 6 or 7, is characterized in that: the hot pressing temperature of described hot-pressing processing is 100-200 DEG C, and plate face hot pressing pressure is 0.1-5.0MPa, and the processing time is 10-40 minute.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965617A (en) * | 2016-05-23 | 2016-09-28 | 宁波中加低碳新技术研究院有限公司 | Fabrication method for veneer based external wall panels |
| CN106042133A (en) * | 2016-05-23 | 2016-10-26 | 宁波中加低碳新技术研究院有限公司 | Manufacturing method for outdoor floor tiles, floors and exterior wall cladding panels |
| CN106117959A (en) * | 2016-06-29 | 2016-11-16 | 合肥广能新材料科技有限公司 | Phenolic resin compound insulating material and preparation method thereof |
| CN109174904A (en) * | 2018-08-21 | 2019-01-11 | 陆海波 | A kind of waste disposal processing technology |
| CN110078975A (en) * | 2019-05-22 | 2019-08-02 | 合肥天沃能源科技有限公司 | A kind of preparation process of agricultural crop straw regenerated plates |
| CN112497802A (en) * | 2020-12-15 | 2021-03-16 | 长春一汽四环总装福利包装有限公司 | Production process of composite pad |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105965617A (en) * | 2016-05-23 | 2016-09-28 | 宁波中加低碳新技术研究院有限公司 | Fabrication method for veneer based external wall panels |
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| CN105965617B (en) * | 2016-05-23 | 2019-05-21 | 宁波中加低碳新技术研究院有限公司 | A kind of manufacturing method of veneer base exterior wall cladding |
| CN106117959A (en) * | 2016-06-29 | 2016-11-16 | 合肥广能新材料科技有限公司 | Phenolic resin compound insulating material and preparation method thereof |
| CN109174904A (en) * | 2018-08-21 | 2019-01-11 | 陆海波 | A kind of waste disposal processing technology |
| CN110078975A (en) * | 2019-05-22 | 2019-08-02 | 合肥天沃能源科技有限公司 | A kind of preparation process of agricultural crop straw regenerated plates |
| CN112497802A (en) * | 2020-12-15 | 2021-03-16 | 长春一汽四环总装福利包装有限公司 | Production process of composite pad |
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| CN105382911B (en) | 2017-11-07 |
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Denomination of invention: A preparation method of crop straw building exterior wall thermal insulation plate Effective date of registration: 20211108 Granted publication date: 20171107 Pledgee: China Construction Bank Corporation Ninghai sub branch Pledgor: Ningbo Zhongjia low carbon New Technology Research Institute Co., Ltd Registration number: Y2021330002165 |