CN105291242A - Environment-friendly bamboo-wood composite shaving board with low hygroscopic expansion rate - Google Patents
Environment-friendly bamboo-wood composite shaving board with low hygroscopic expansion rate Download PDFInfo
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- CN105291242A CN105291242A CN201510696979.5A CN201510696979A CN105291242A CN 105291242 A CN105291242 A CN 105291242A CN 201510696979 A CN201510696979 A CN 201510696979A CN 105291242 A CN105291242 A CN 105291242A
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Abstract
The invention discloses a production method of an environment-friendly bamboo-wood composite shaving board with a low hygroscopic expansion rate. The production method comprises the steps that firstly, bamboo raw materials are subjected to mechanical pulverization, a biological enzyme treatment agent with the weight being 20 times that of bamboo fibers is added to the raw materials, and the mixture is subjected to heat-preserving immersion treatment at 35 DEG C for about 2-4 hours and then is dried; secondly, bamboo and wood raw materials are evenly mixed according to the weight ratio of 1:1, dried and then separated, the thickness of central-layer wood-bamboo scrap shaving particles is 0.3 mm, and surface-layer wood shavings are subjected to fine grinding until the thickness is smaller than 0.1 mm; thirdly, the biological enzyme treatment agent comprises 5-6 U of laccase per g of bamboo fibers, and 0.5-0.8 U of galactosidase per g of bamboo fibers; and a low-molar-ratio environment-friendly urea-formaldehyde resin adhesive with the molar ratio being 1.0 is selected and applied in an airflow stirring type adhesive spraying mode, wherein the adhesive applying amount is 30-35 kg (dry glue) per cubic meter, the hot-press pressure is 2.6-2.8 Mpa, the hot-press temperature is 150 DEG C, the hot-press time is 20 s mm<-1>, and then the shaving board is obtained.
Description
Technical field
The present invention relates to the production technology of the bamboo wood laminated particle-board of the low moisture expantion rate of a kind of environmental protection, belong to bamboo wood manufacture field.
Background technology
Bamboo-wood composite material refers to that bamboo wood and timber carry out the composite board that combines and glued joint or square bar with identical or different construction unit form, it has various ways, as bamboo wood composite veneer, laminated bamboo-wood composite lumber, bamboo wood laminated particle-board and medium density fibre board (MDF), bamboo batten aligned lumber etc.Divide from the angle of materials classification, it is mainly divided into structure bamboo-wood composite material and the large class of Functiaonl bamboo wood composite material two.Wherein, structure bamboo-wood composite material mainly does the use of engineering structural member; And Functiaonl bamboo wood composite material is mainly used in decoration and furniture makes.
Particieboard is one of main wood-based plate kind, compared with the wood-based plate such as fiberboard, glued board, particieboard manufactures raw material based on small firewood material and harvesting of wood processing fent, and unit product consumable quantity is lower, has the advantage that timber resources comprehensive utilization ratio is high, cost of goods manufactured is low.In order to ensure the technological quality of product, the Wood Properties Within that traditional particieboard manufactures General Requirements manufacture raw material is more consistent.In particieboard manufacture process, if the fibre length of raw material, strength difference are too large, easily cause density and mechanical strength in particieboard plate uneven, affect product quality.Bamboo wood and timber are 2 kinds of fibre lengths and the great raw material of strength difference, prior art has people to study bamboo material and wood material to be mixed and produces qualified particieboard product, inquires into the key process technology problems such as pulp furnish, mixing, cementing and hot pressing.Result of study shows, and considers various factors and determines that the technological parameter of bamboo wood laminated particle-board batch production is: low mole prop0rtion environment-friendly resin glue, blender gas streaming glue spraying method, bamboo shaving ratio 40% ~ 60%, glue consumption 70kg (dry glue)/cubic meter, hot pressing pressure 2.0MPa, hot pressing temperature 170 DEG C, hot pressing time 20smm
-1, wood shavings particle (sandwich layer) 0.5 ~ 1.0mm, thickness of slab 8.8mm.The bamboo wood laminated particle-board product quality of batch production performs national standard, and quality can reach GB category-A particieboard Grade A standard.Along with the increase of glue consumption, laminated particle-board intensity and density increase to some extent, and burst size of methanal significantly increases, and expansion rate of water absorption obviously reduces.Illustrate and increase glue consumption to improving laminated particle-board intensity without obvious effect, although expansion rate of water absorption can be reduced obviously, also can cause significantly improving of Form aldehyde release figureofmerit.The results of analysis of variance shows, the impact of factor B (glue consumption) on bamboo wood laminated particle-board internal bond strength, MOR and density is all not remarkable, but significantly affects expansion rate of water absorption and the Form aldehyde release figureofmerit of laminated particle-board.That is, still there is a bottleneck in the consumption reducing glue, namely expansion rate of water absorption can be very high, and the place moist in south is easily out of shape.
The present invention aims to provide the production technology of the bamboo wood laminated particle-board of the low moisture expantion rate of a kind of environmental protection, is significantly reducing glue quantity, is reducing on the basis of burst size of methanal, keep very low moisture expantion rate.
Summary of the invention
Based on the technical problem that background technology exists, the present invention is directed to background technology Problems existing, the production technology of the bamboo wood laminated particle-board of the low moisture expantion rate of a kind of environmental protection is provided, is significantly reducing glue quantity, reduce on the basis of burst size of methanal, keep very low moisture expantion rate.
The present inventor finds, bamboo fibre is omitted anticorrosion step, adopts laccase dosage: 5-6U/g bamboo fibre, galactosidase dosage: 0.5-0.8U/g bamboo fibre carries out isothermal holding certain hour, effectively can carry out modification to bamboo fibre, to reduce glue quantity, reduce moisture expantion rate.
Object of the present invention is achieved through the following technical solutions:
A production method for the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection, its step is as follows:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 2-4h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The dosage of described biological enzyme additive is: laccase dosage: 5-6U/g bamboo fibre, galactosidase dosage: 0.5-0.8U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 30-35kg (dry glue)/cubic meter, hot pressing pressure 2.6-2.8MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Usefulness of the present invention is:
1. present invention process environmental protection, greatly reduces glue quantity, reduces burst size of methanal;
2. the bamboo wood laminated particle-board excellent performance for preparing of the present invention, every primary quality measure such as MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release are all very excellent.
3. the bamboo wood laminated particle-board that the present invention prepares has good market prospects.
Detailed description of the invention
The wood-fibred of the present invention is willow wood-fibred.
embodiment 1:
The production of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 2h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The dosage of described biological enzyme additive is: laccase dosage: 6U/g bamboo fibre, galactosidase dosage: 0.6U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 30kg (dry glue)/cubic meter, hot pressing pressure 2.8MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Measure the primary quality measure such as the density of 8.8mm thick bamboo wood laminated particle-board, MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release.
Assay method: MOR, internal bond strength, free formaldehyde release adopt GB/T4897.1-2003, GB/T4897.3-2003, GB18580-2001 method to measure respectively, expansion rate of water absorption adopts GB/T4897-92 method to measure.
Result: MOR is 18.6Mpa, internal bond strength is 0.91Mpa, and free formaldehyde release is 2.4mg/100g, and expansion rate of water absorption is 1.1%.
embodiment 2:
The production of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 4h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The formula of described biological enzyme additive is: laccase dosage: 5U/g bamboo fibre, galactosidase dosage: 0.8U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 35kg (dry glue)/cubic meter, hot pressing pressure 2.6MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Measure the primary quality measure such as the density of 8.8mm thick bamboo wood laminated particle-board, MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release.
Assay method: MOR, internal bond strength, free formaldehyde release adopt GB/T4897.1-2003, GB/T4897.3-2003, GB18580-2001 method to measure respectively, expansion rate of water absorption adopts GB/T4897-92 method to measure.
Result: MOR is 19.8Mpa, internal bond strength is 0.86Mpa, and free formaldehyde release is 2.6mg/100g, and expansion rate of water absorption is 2.5%.
embodiment 3:
The production of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 3h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The formula of described biological enzyme additive is: laccase dosage: 6U/g bamboo fibre, galactosidase dosage: 0.8U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 33kg (dry glue)/cubic meter, hot pressing pressure 2.7MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Measure the primary quality measure such as the density of 8.8mm thick bamboo wood laminated particle-board, MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release.
Assay method: MOR, internal bond strength, free formaldehyde release adopt GB/T4897.1-2003, GB/T4897.3-2003, GB18580-2001 method to measure respectively, expansion rate of water absorption adopts GB/T4897-92 method to measure.
Result: MOR is 19.0Mpa, internal bond strength is 0.88Mpa, and free formaldehyde release is 2.5mg/100g, and expansion rate of water absorption is 2.7%.
embodiment 4:
The production of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 2h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The formula of described biological enzyme additive is: laccase dosage: 5U/g bamboo fibre, galactosidase dosage 0.7U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 31kg (dry glue)/cubic meter, hot pressing pressure 2.8MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Measure the primary quality measure such as the density of 8.8mm thick bamboo wood laminated particle-board, MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release.
Assay method: MOR, internal bond strength, free formaldehyde release adopt GB/T4897.1-2003, GB/T4897.3-2003, GB18580-2001 method to measure respectively, expansion rate of water absorption adopts GB/T4897-92 method to measure.
Result: MOR is 19.5Mpa, internal bond strength is 0.90Mpa, and free formaldehyde release is 2.4mg/100g, and expansion rate of water absorption is 2.9%.
embodiment 5:
The production of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 3h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The formula of described biological enzyme additive is: laccase dosage: 6U/g bamboo fibre, galactosidase dosage: 0.8U/g bamboo fibre;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 34kg (dry glue)/cubic meter, hot pressing pressure 2.6MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
Measure the primary quality measure such as the density of 8.8mm thick bamboo wood laminated particle-board, MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release.
Assay method: MOR, internal bond strength, free formaldehyde release adopt GB/T4897.1-2003, GB/T4897.3-2003, GB18580-2001 method to measure respectively, expansion rate of water absorption adopts GB/T4897-92 method to measure.
Result: MOR is 18.8Mpa, internal bond strength is 0.87Mpa, and free formaldehyde release is 2.6mg/100g, and expansion rate of water absorption is 3.0%.
As can be seen here, present invention process environmental protection, greatly reduces glue quantity, reduces burst size of methanal, and the bamboo wood laminated particle-board excellent performance prepared, every primary quality measure such as MOR, internal bond strength, expansion rate of water absorption and free formaldehyde release are all very excellent.Especially embodiment 1, moisture expantion rate is only 1.1%.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. a production method for the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection, its step is as follows:
(1) raw material is prepared: first bamboo raw material is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 2-4h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
Described biological enzyme additive is: laccase and galactosidase;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 30-35kg (dry glue)/cubic meter, hot pressing pressure 2.6-2.8MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
2. the production method of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection according to claim 1, is characterized in that:
Described bamboo raw material is the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent.
3. the production method of the bamboo wood laminated particle-board of the low moisture expantion rate of the environmental protection described in claim 1-2, is characterized in that:
The dosage of described biological enzyme additive is: laccase dosage: 5-6U/g bamboo fibre, galactosidase dosage: 0.5-0.8U/g bamboo fibre.
4. the production method of the bamboo wood laminated particle-board of the low moisture expantion rate of environmental protection according to claim 1, is characterized in that:
(1) raw material is prepared: first bamboo raw material (the bamboo tip, bamboo bits, bamboo shaving and other bamboo product processing fent) is carried out mechanical crushing, drop into the biological enzyme additive of bamboo fibre 20 times of weight, at 35 DEG C, be incubated impregnation process be about 2h post-drying, then wood, bamboo raw material are pressed 1:1 weight ratio Homogeneous phase mixing, sorting is carried out after oven dry, sandwich layer wood bamboo bits wood shavings particle 0.3mm, wood shavings fine grinding in top layer is to < 0.1mm;
The dosage of described biological enzyme additive is: laccase dosage: 6U/g bamboo fibre, galactosidase dosage;
(2) extrusion chipboard: select the low mole prop0rtion environment-friendly urea-formaldehyde resin glue of mol ratio 1.0 to carry out applying glue, glue consumption for 30kg (dry glue)/cubic meter, hot pressing pressure 2.8MPa, hot pressing temperature 150 DEG C, hot pressing time 20smm with blender gas streaming glue spraying method
-1, obtained particieboard.
5. the low moisture expantion rate of the environmental protection described in claim 1-4 bamboo wood laminated particle-board production method prepare bamboo wood laminated particle-board.
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Cited By (6)
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| CN106217576A (en) * | 2016-08-02 | 2016-12-14 | 浙江长兴森大竹木制品有限公司 | A kind of Masson Pine Mianzhu laminated particle-board |
| CN106239691A (en) * | 2016-08-02 | 2016-12-21 | 浙江长兴森大竹木制品有限公司 | A kind of low formaldehyde high-strength bamboo wood laminated particle-board |
| CN106426427A (en) * | 2016-08-02 | 2017-02-22 | 浙江长兴森大竹木制品有限公司 | High-toughness bamboo and wood fiber composite decoration plate |
| CN107671976A (en) * | 2017-11-05 | 2018-02-09 | 茆莉娟 | A kind of bamboo fiberboard processing technology of low expansion rate of water absorption |
| US10773417B2 (en) * | 2017-06-14 | 2020-09-15 | Hangzhou Penno Packtech Co., LTD | Method for processing a molded tray based on bamboo-wood mixed shavings |
| US10836071B2 (en) * | 2017-06-14 | 2020-11-17 | Hangzhou Penno Packtech Co., LTD | Method for processing a molded tray based on bamboo shavings |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217576A (en) * | 2016-08-02 | 2016-12-14 | 浙江长兴森大竹木制品有限公司 | A kind of Masson Pine Mianzhu laminated particle-board |
| CN106239691A (en) * | 2016-08-02 | 2016-12-21 | 浙江长兴森大竹木制品有限公司 | A kind of low formaldehyde high-strength bamboo wood laminated particle-board |
| CN106426427A (en) * | 2016-08-02 | 2017-02-22 | 浙江长兴森大竹木制品有限公司 | High-toughness bamboo and wood fiber composite decoration plate |
| US10773417B2 (en) * | 2017-06-14 | 2020-09-15 | Hangzhou Penno Packtech Co., LTD | Method for processing a molded tray based on bamboo-wood mixed shavings |
| US10836071B2 (en) * | 2017-06-14 | 2020-11-17 | Hangzhou Penno Packtech Co., LTD | Method for processing a molded tray based on bamboo shavings |
| CN107671976A (en) * | 2017-11-05 | 2018-02-09 | 茆莉娟 | A kind of bamboo fiberboard processing technology of low expansion rate of water absorption |
| CN107671976B (en) * | 2017-11-05 | 2020-07-03 | 唐山市润丰区欧饰龙装饰材料有限公司 | Bamboo fiberboard processing technology with low water absorption expansion rate |
| CN107671976B8 (en) * | 2017-11-05 | 2020-08-18 | 唐山市丰润区欧饰龙装饰材料有限公司 | Bamboo fiberboard processing technology with low water absorption expansion rate |
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Application publication date: 20160203 |