CN1323819C - Artificial board of straw non-wood plant fibre and its preparation process - Google Patents
Artificial board of straw non-wood plant fibre and its preparation process Download PDFInfo
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- CN1323819C CN1323819C CNB2004100660050A CN200410066005A CN1323819C CN 1323819 C CN1323819 C CN 1323819C CN B2004100660050 A CNB2004100660050 A CN B2004100660050A CN 200410066005 A CN200410066005 A CN 200410066005A CN 1323819 C CN1323819 C CN 1323819C
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Abstract
The present invention relates to an artificial board made of non-wood plant straw fibers and a method for preparing the artificial board. The artificial board is prepared from urea-formaldehyde resin adhesive, the non-wood plant straw fibers and an attapulgite clay, wherein the non-wood straw plant fibers are the non-wood plant fiber crushed aggregates of the straw of the order 12 to 75, and the ratio of the weight percentage of the urea-formaldehyde resin adhesive, the non-wood plant straw fibers and the attapulgite clay is 12 to 60%: 35 to 85%: 3 to 50%. The method for preparing the artificial board comprises the following steps: first, the non-wood plant straw fibers are broken into short fibers, and the short fibers are dried or humidified so as to have the moisture percentage of 3% to 25%; next, a mixture of the non-wood plant straw fibers and the attapulgite clay is formulated according to the ratio of the weight percentage of the non-wood plant straw fibers and the attapulgite clay and is processed through the milling or grinding of a mechanical ball, and then, is uniformly stirred after added with the urea-formaldehyde resin adhesive and is moulded into a shape by the hot pressing method after put into a mould.
Description
Technical field
The present invention relates to wood-based plate and preparation method thereof, relate in particular to a kind of artificial board of straw non-wood plant fibre and preparation method thereof.
Background technology
Wood-based plate is widely used in fields such as furniture, interior decorations, and is progressively enlarged owing to have good physical and mechanical property and be easy to machining, Surface Machining and facing performance.Along with global forest reserves shortage, the supply day of timber is becoming tight, and the production of timber wood-based plate has been subjected to influence to a certain degree.
China is the country of a forest reserves poorness, and national afforestation rate only 16.55% is significantly less than 25% world average level, and the 120th in the row world has forest reserves 8.6m per capita
3, well below 71.8m per capita
3World average level.And, caused China's soil erosion for a long time to excessive felling and other the various forms of vegetation deteriorations of forest, and flood is frequent, and sandstorm is serious, adverse consequences such as the deterioration of the ecological environment.For this reason, country is resolute to implement " wildwood protected project ", and has gradually reduced the harvesting of wood amount of various places.Therefore, the market demand of timber and the limited resources of forest are perplexing the development of our wood-processing industry always.And the demand of wood-based plate is increasing year by year, and therefore, seeking new wood-based plate, to substitute raw material imperative already.
China is large agricultural country, and annual agricultural crop straw class residue (comprising wheat straw, straw, jowar stalk, cornstalk, hemp stalk, cotton stalk, cigarette stalk etc.) reaches more than 1,000,000,000 ton, and this is a kind of huge renewable resource.Raising along with scientific and technological progress and life of farmers level, stalk is not re-used as the daily fuel in rural area, how to develop the abundant non-wooden material of raw material resources, resources advantage on this agricultural of stalk is converted into economic advantages, explore the effective way of stalk comprehensive utilization, to alleviate the contradiction of the timber resources poorness that enlarges day by day, receive publicity day by day, artificial board of straw is exactly the effective way that solves this contradiction.With stalk system wood-based plate is the technology of tool market development potentiality and industrialization prospect during straw industrialization utilizes, and also is to solve one of agricultural crop straw comprehensive utilization fundamental way.The development artificial board of straw not only can improve stalk consumption rate and utilization rate, saving timber resources, preserve the ecological environment, but also can promote the development of agricultural and rural economy, expansion town and country to obtain employment, increase farmers' income.
Compare with wood-base fibre and particle panel material, there are some difficult points in artificial board of straw on production technology, and some is satisfactorily resolved so far as yet:
1. because the architectural feature of stalk cell and chemical constituent are not quite similar with timber, so the traditional way of employing is carried out material fragmentation or fiber separation, the fiber yield is low, poor morphology has influenced the physical and mechanical property of product.
2. be unfavorable for the material that glues together because contain on the stalk surface more,, be difficult to obtain the bonding strength (especially internal bond strength) of being satisfied with so adopt traditional Lauxite or phenolic resin glue.
Based on above reason, up to the present, the artificial board of straw factory that has built up nearly all is adhesive with the isocyanates both at home and abroad, therefore causes two problems:
(1) cost problem.The isocyanates price is 8-10 a times of Lauxite, although the former resin added is more much lower than the latter, absolute cost is still than latter height;
(2) haftplatte problem.Directly adopt the isocyanate adhesive, during curing and the mould adhesion, be difficult for the demoulding.
Because there is above-mentioned difficult point, caused domesticly producing for artificial board of straw that " laboratory research is many, and Industry Promotion is few at present; It is many to do report of feasibility, and actual investment is founded the factory few; Many to product public opinion support.Practical application is few " phenomenon.
Summary of the invention
The invention provides a kind of with low cost and help artificial board of straw non-wood plant fibre that reduces pollution and preparation method thereof.
The present invention adopts following technical scheme:
Artificial board of straw non-wood plant fibre of the present invention, comprise Lauxite binding agent, straw non-wood plant fibre and attapulgite, straw non-wood plant fibre is a 12-75 order straw non-wood plant fibre particle, the weight percent proportioning of Lauxite binding agent, straw non-wood plant fibre and attapulgite is: 12～60%, 35～85%, 3～50%.
The preparation method who is used to make above-mentioned artificial board of straw non-wood plant fibre of the present invention pulverizes straw non-wood plant fibre earlier, therefrom select 12～75 purpose straw non-wood plant short fibers, to make the moisture content of straw non-wood plant short fiber be 3%～25% to method by drying or humidification again, after this, press the weight percent proportioning of straw non-wood plant fibre and attapulgite: 35～85%, 3～50%, be made into straw non-wood plant fibre and attapulgite mixture, adopt mechanical ball milling or roll mixture is handled, destroy the surface structure of straw non-wood plant short fiber, add the Lauxite binding agent more in proportion and stir, after mating formation in the mould, at pressure 1.5～4.0MPa, hot forming under 120～180 ℃ of conditions of temperature, hot pressing time is 0.3～2min/mm.
Compared with prior art, the present invention has following advantage:
(1) the present invention mixes straw non-wood plant fibre with attapulgite, and is consolidated by binding agent, forms composite board, can give full play to the advantage of different materials, improves the combination property of wood-based plate.
(2) attapulgite or bentonite auxiliary material have the good adsorption performance, and its powder has bigger specific area, and these two factors all make harmful substances such as its PARA FORMALDEHYDE PRILLS(91,95) have stronger adsorption capacity, can reduce the burst size of methanal of wood-based plate, help environmental protection.
(3) among the present invention, fiber preparation process is simple.The processing of straw non-wood plant fibre comprises fragmentation and screening, does not need to carry out processing such as defibrator process, and raw material processing is simple, convenient, saves cost, and is easy to realize.
[4] the present invention makes straw non-wood plant fibre and attapulgite's surface produce physics by mechanical ball milling or method such as roll to interact, destroy its surperficial silicrete, when the non-wood plant material is the reed stalk, this processing can also be removed the adhesive film of reed stalk inwall effectively, thereby make Lauxite and straw non-wood plant fibre produce good compatibility as binding agent, has effective cementation, and with compare as the isocyanates of binding agent at present, Lauxite price not enough its 1/10th, so the present invention has the low advantage of production cost.
The specific embodiment
Embodiment 1
A kind of artificial board of straw non-wood plant fibre, comprise Lauxite binding agent, straw non-wood plant fibre and attapulgite, straw non-wood plant fibre is a 12-75 order straw non-wood plant fibre particle, the weight percent proportioning of Lauxite binding agent, straw non-wood plant fibre and attapulgite is: 12～60%, 35～85%, 3～50%, as desirable 20%: 70%: 10%; 30%: 40%: 30%; 40%: 20%: 40%, the present invention can also comprise bentonite, and the weight percent proportioning of Lauxite binding agent and bentonite is: 12～60%, 3～50%, as desirable 1: 0.5; 1: 5; 1: 15.In the present embodiment, can when adding described binding agent, add curing agent, as account for the ammonium chloride curing agent of Lauxite amount 1～1.5%; Add formaldehyde catching agent, as account for the melamine of Lauxite amount 10%; The resistance to water that adds waterproofing agent raising plate, account for the emulsified wax of total amount 1% as adding, above-mentioned straw non-wood plant fibre can be a kind of in cotton stalk, hemp stalk, cigarette stalk, sorghum stalk, cornstalk, Sunflower Stalk, straw, millet stalk, castor-oil plant stalk, rape stalk, sesame stalk, soya bean stalk, broad bean stalk, pea stalk, sweet potato stalk, cassava stalk, banana stalk, palm stalk, straw, reed, sisal hemp stalk (head), the inferior tiny sundry bamboo.
Embodiment 2
A kind of preparation method who is used to make artificial board of straw non-wood plant fibre, earlier straw non-wood plant fibre is pulverized, therefrom select 12～75 purpose straw non-wood plant short fibers, to make the moisture content of straw non-wood plant short fiber be 3%～25% to method by drying or humidification again, after this, press the weight percent proportioning of straw non-wood plant fibre and attapulgite: 35～85%.3～50%, as desirable 1: 0.5; 1: 5; 1: 12; 1: 20; 1: 25.Be made into straw non-wood plant fibre and attapulgite mixture, adopt mechanical ball milling or roll mixture is handled, destroy the top layer of straw non-wood plant short fiber, add the Lauxite binding agent more in proportion and stir, after mating formation in the mould, at pressure 1.5～4.0MPa, hot forming under 120～180 ℃ of conditions of temperature, hot pressing time is 0.3～2min/mm.Handle through cutting edge, sanding again after the hot pressing, grade through check then and can pack warehouse-in.
Claims (3)
1, a kind of artificial board of straw non-wood plant fibre, it is characterized in that comprising Lauxite binding agent, straw non-wood plant fibre and attapulgite, straw non-wood plant fibre is a 12-75 order straw non-wood plant fibre particle, the weight percent proportioning of Lauxite binding agent, straw non-wood plant fibre and attapulgite is: 12～60%, 35～85%, 3～50%.
2, a kind of preparation method who is used to make the described artificial board of straw non-wood plant fibre of claim 1, it is characterized in that earlier straw non-wood plant fibre being pulverized, therefrom select 12～75 purpose straw non-wood plant short fibers, to make the moisture content of straw non-wood plant short fiber be 3%～25% to method by drying or humidification again, after this, press the weight percent proportioning of straw non-wood plant fibre and attapulgite: 35～85%, 3～50%, be made into straw non-wood plant fibre and attapulgite mixture, adopt mechanical ball milling or roll mixture is handled, destroy the surface structure of straw non-wood plant short fiber, add the Lauxite binding agent more in proportion and stir, after mating formation in the mould, at pressure 1.5～4.0MPa, hot forming under 120～180 ℃ of conditions of temperature, hot pressing time is 0.3～2min/mm.
3, the preparation method of artificial board of straw non-wood plant fibre according to claim 2 is characterized in that handling through cutting edge, sanding after the hot pressing again, grades through check then and can pack warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100660050A CN1323819C (en) | 2004-12-13 | 2004-12-13 | Artificial board of straw non-wood plant fibre and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100660050A CN1323819C (en) | 2004-12-13 | 2004-12-13 | Artificial board of straw non-wood plant fibre and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1623747A CN1623747A (en) | 2005-06-08 |
| CN1323819C true CN1323819C (en) | 2007-07-04 |
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| CNB2004100660050A Expired - Fee Related CN1323819C (en) | 2004-12-13 | 2004-12-13 | Artificial board of straw non-wood plant fibre and its preparation process |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325570C (en) * | 2004-12-13 | 2007-07-11 | 东南大学 | Compostte artificial board and its preparation method |
| CN100350012C (en) * | 2006-03-07 | 2007-11-21 | 许盛英 | Urea resin additive |
| CN100374264C (en) * | 2006-10-19 | 2008-03-12 | 南京林业大学 | Method for preparing straw fiber and its application |
| CN101570605B (en) * | 2008-04-28 | 2013-03-06 | 中国矿业大学 | Compounded additive of pollopas and preparation method thereof |
| CN102555015B (en) * | 2012-03-09 | 2014-12-17 | 刘成坤 | Method for machining man-made board by utilizing maize straws |
| CN104692761A (en) * | 2015-02-05 | 2015-06-10 | 安徽忠盛新型装饰材料有限公司 | Environment-friendly composite decoration board containing agave sisalana dregs and production method thereof |
| CN105694503A (en) * | 2016-02-19 | 2016-06-22 | 武秀英 | Plant fiber biocomposite and application thereof |
| CN107936467A (en) * | 2017-12-12 | 2018-04-20 | 大连理创科技有限公司 | A kind of vegetable fiber environmental protection material of high intensity and preparation method thereof |
| CN109227858A (en) * | 2018-10-10 | 2019-01-18 | 万安绿森木业有限公司 | A kind of manufacturing process of particieboard |
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|---|---|---|---|---|
| CN1273303A (en) * | 1999-05-05 | 2000-11-15 | 陆仁书 | Middle-density fibrous board made up of wheat or rice straws and aldehyde adhesive and its making mehtod |
| WO2001072904A2 (en) * | 2000-03-31 | 2001-10-04 | Enviro Concept Ltd | A plant composite material, its processing and use |
| CN1356202A (en) * | 2001-12-11 | 2002-07-03 | 南京林业大学 | Process for preparing middle-density rice straw board |
| CN1623746A (en) * | 2004-12-13 | 2005-06-08 | 东南大学 | Compostte artificial board and its preparation method |
-
2004
- 2004-12-13 CN CNB2004100660050A patent/CN1323819C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273303A (en) * | 1999-05-05 | 2000-11-15 | 陆仁书 | Middle-density fibrous board made up of wheat or rice straws and aldehyde adhesive and its making mehtod |
| WO2001007219A1 (en) * | 1999-05-05 | 2001-02-01 | Renshu Lu | A straw wheat fibre board with medium-density and a process of manufacturing the same |
| WO2001072904A2 (en) * | 2000-03-31 | 2001-10-04 | Enviro Concept Ltd | A plant composite material, its processing and use |
| CN1356202A (en) * | 2001-12-11 | 2002-07-03 | 南京林业大学 | Process for preparing middle-density rice straw board |
| CN1623746A (en) * | 2004-12-13 | 2005-06-08 | 东南大学 | Compostte artificial board and its preparation method |
Non-Patent Citations (3)
| Title |
|---|
| 中南林学院硕士学位论文 杨小军，33－34，中南林学院 2004 * |
| 优质秸秆中密度纤维板的研究 GuangpingHan,ShuichiKawai,KenjiUmemura,MinZhang,TakahisaHonda,人造板通讯,第12期 2001 * |
| 优质秸秆中密度纤维板的研究 GuangpingHan,ShuichiKawai,KenjiUmemura,MinZhang,TakahisaHonda,人造板通讯,第12期 2001;中南林学院硕士学位论文 杨小军，33－34，中南林学院 2004 * |
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| CN1623747A (en) | 2005-06-08 |
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Granted publication date: 20070704 Termination date: 20100113 |