CN110216767A - A kind of water-fast method of modifying of wood rubber fiberboard - Google Patents
A kind of water-fast method of modifying of wood rubber fiberboard Download PDFInfo
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- CN110216767A CN110216767A CN201910370828.9A CN201910370828A CN110216767A CN 110216767 A CN110216767 A CN 110216767A CN 201910370828 A CN201910370828 A CN 201910370828A CN 110216767 A CN110216767 A CN 110216767A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/025—Controlling the process
-
- 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
- B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
-
- 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
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2200/00—Wooden materials to be treated
- B27K2200/15—Pretreated particles or fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of water-fast method of modifying of wooden rubber fiberboard, deionized water are added into waste and old rubber particle, after being sufficiently stirred, sodium hypochlorite and concentrated hydrochloric acid is added, it after modification, filters, is washed to neutrality, refilters, dry to obtain the modified waste and old rubber particle in surface in an oven；Nano silica after drying, is dissolved in dehydrated alcohol, high speed shear disperses to obtain component A in drying box；Into Silane coupling agent KH550 plus ethanol water is uniformly mixed, and is stood, then mix after adjusting pH with component A, in a water bath high speed shear, re-ultrasonic dispersion, filter, drying, grind surface graft modification nano silica；Silane coupling agent Si69 is dissolved in dehydrated alcohol, then it is uniformly sprayed on the modified waste and old rubber particle in surface, then is mixed with the nano silica of the wood fibre of modification and surface graft modification, spray adhesive, it is hot-forming, obtain the wooden rubber fiberboard.
Description
Technical field
The invention belongs to fiberboard fields, and in particular to a kind of water-fast method of modifying of wood rubber fiberboard.
Background technique
With the rapid development of auto industry, a large amount of waste tire is had every year and is scrapped, waste tire rubber is carried out
It recycles of increasing concern.With the raising of environmental requirement, the processing mode of burning and burying is restricted, and is recycled again sharp
With more and more attention has been paid to and preparing waste and old rubber particle is a kind of common recovery and treatment method.Waste and old rubber particle can be with
As matrix or applying filler to field of compound material.
Waste old both facilitates the viscoelastic property for regulating and controlling composite wooden material in the application in composite wooden material field,
It is also beneficial to rationally utilize waste rubber resource.
Summary of the invention
The purpose of the present invention is providing a kind of water-fast method of modifying of wooden rubber fiberboard for existing problem, according to
The wooden rubber fiberboard of this method preparation has excellent mechanical property and water resistance.
The present invention is achieved by the following technical solutions:
A kind of water-fast method of modifying of wood rubber fiberboard, which is characterized in that include the following steps, following raw materials by weight:
(1) surface modifying method of waste and old rubber particle:
Into 10-30 parts of waste and old rubber particles, deionized water is added in 1:6-7, after being sufficiently stirred, be added 3-8 part sodium hypochlorite with
0.8-1.8 parts of concentrated hydrochloric acids, after modification 7-13min, filter, be washed to it is neutral, refilter, dry 10- in 80-85 DEG C of baking oven
12h obtains the modified waste and old rubber particle in surface；
It carries out that surface is modified to waste and old rubber particle using the liquor natrii hypochloritis of acidification, has obtained changing for surface oxidation and chlorination
Property waste and old rubber particle, the polar functional group quantity on waste and old rubber particle surface increases, roughness increases, wetability improves；
(2) the surface graft modification method of nano silica:
By 7-9 parts of nano silicas in 100-105 DEG C of drying box after dry 10-12h, 1:5 is dissolved in dehydrated alcohol, high speed
Shearing dispersion 30-40min obtains component A；Into 0.2-0.3 parts of Silane coupling agent KH550s, 1:10 adds ethanol water to be uniformly mixed,
Tune pH stands 30-35min after being 9, then 1:1 is mixed with component A by volume, shears 20- in 80-85 DEG C of water-bath high speed
30min, re-ultrasonic dispersion 30-40min, filter, be dry, grinding surface graft modification nano silica；
Nano-silicon dioxide particle is modified through Silane coupling agent KH550 surface, nano-silicon dioxide particle surface grafting KH550
Characteristic group, KH550 is successfully grafted to nano-silicon dioxide particle surface, and modified nano-silicon dioxide particle can be
It is evenly dispersed in the wooden rubber composite material；
(3) preparation of the wooden rubber fiberboard:
2-4 parts of silane coupling agent Si69 are dissolved in 10-20 parts of dehydrated alcohols, then uniformly sprinkling changes on gained surface in (1)
Property waste and old rubber particle on, dry in the air to 10-15min, then with gained table in the wood fibre of 70-90 parts of modifications and (2)
The nano silica of face graft modification mixes, and sprays 10-12 parts of adhesives, suppresses 4-7min on 150-160 DEG C of hot press
Molding obtains the wooden rubber fiberboard；
First wood fibre, the wooden rubber fiberboard of pretreated wood fibre preparation are pre-processed by reagent of sodium hydroxide-urea
Performance be significantly improved, then be modified processing with silane coupling agent, the stretch modulus and punching of the wooden rubber fiberboard can be improved
Hit intensity；
Further, waste and old rubber particle is 15-30 mesh in step (1), and the concentration of concentrated hydrochloric acid is 36-38%.
Further, ethanol water concentration is 35-45% in step (2).
Further, in step (3) wood fibre modification processing method: into 70-90 parts of wood fibres 1:5 be added hydrogen
Sodium oxide molybdena-aqueous solution of urea is dispersed with stirring uniformly, at 50-55 DEG C after dipping pretreatment 2-3h, with 2-3 parts of coupling agent LD-
The mixing of 125 and 140-180 parts of ethanol solution, after whip modified 1-2h, filter, wash modification wood fibre；
Wherein, naoh concentration 2%, urea concentration 4%, ethanol solution concentration 30-40%.
Further, hot pressing pressure is 2-4MPa in step (3).
The present invention has the advantage that compared with prior art
(1) surface is carried out to waste and old rubber particle using the liquor natrii hypochloritis of acidification to be modified, obtained surface oxidation and chlorination
Modified waste rubber grain, the polar functional group quantity on waste and old rubber particle surface increases, roughness increases, wetability mentions
The tensile strength of height, the wooden rubber fiberboard of modified waste and old rubber particle preparation improves 36%, and adhesive strength improves
127%。
(2) nano-silicon dioxide particle is modified through Silane coupling agent KH550 surface, nano-silicon dioxide particle surface grafting
The characteristic group of KH550, KH550 are successfully grafted to nano-silicon dioxide particle surface, modified nano silica
Particle can be evenly dispersed in the wooden rubber composite material；After adding modified nano-silicon dioxide particle, wood fibre and rubber
Burl closes even closer, hole gap reduction.
(3) wood fibre, the wooden rubber of pretreated wood fibre preparation first are pre-processed by reagent of sodium hydroxide-urea
The performance of fiberboard is significantly improved, then is modified processing with silane coupling agent, and the stretching die of the wooden rubber fiberboard can be improved
Amount and impact strength；
Silane coupling agent can effectively improve the gluing of wood fibre and rubber grain, and the addition of silane coupling agent is so that plate exists
To obtain the static bending strength bigger than being not added with silane coupling agent plate under lesser elasticity modulus, silane coupling agent can be effective
Raising rubber surface wetability, improve plate water resistance.
Specific embodiment
Embodiment 1
A kind of water-fast method of modifying of wood rubber fiberboard, which is characterized in that include the following steps, following raw materials by weight:
(1) surface modifying method of waste and old rubber particle:
Into 10 parts of waste and old rubber particles, deionized water is added in 1:6, and after being sufficiently stirred, 3 parts of sodium hypochlorite and 0.8 portion of dense salt are added
Acid, after modification 7min, filter, be washed to it is neutral, refilter, 12h is dried in 80 DEG C of baking ovens and obtains the modified waste and old rubber in surface
Glue particle；
Wherein, waste and old rubber particle is 15 mesh, and the concentration of concentrated hydrochloric acid is 36%；
(2) the surface graft modification method of nano silica:
By 7 parts of nano silicas in 100 DEG C of drying boxes after dry 12h, 1:5 is dissolved in dehydrated alcohol, high speed shear dispersion
30min obtains component A；Into 0.2 part of Silane coupling agent KH550,1:10 adds ethanol water to be uniformly mixed, and tune pH is stood after being 9
30min, then 1:1 is mixed with component A by volume, is sheared 30min, re-ultrasonic dispersion 30min in 80 DEG C of water-bath high speeds, is taken out
Filter, it is dry, grind surface graft modification nano silica；
Wherein, ethanol water concentration is 35%；
(3) preparation of the wooden rubber fiberboard:
2 parts of silane coupling agent Si69 are dissolved in 10 parts of dehydrated alcohols, then uniformly surface obtained by sprinkling in (1) is modified gives up
On old rubber grain, dry in the air to 10min, then with gained surface graft modification in the wood fibre of 70 parts of modifications and (2)
Nano silica mixes, and sprays 10 parts of adhesives, and 7min molding is suppressed on 150 DEG C of hot presses, obtains the wooden rubber fiber
Plate；
Wherein, the modification processing method of wood fibre: into 70 parts of wood fibres, sodium hydroxide-aqueous solution of urea is added in 1:5, is stirred
It mixes and is uniformly dispersed, at 50 DEG C after dipping pretreatment 3h, mixed with 2 parts of coupling agent LD-125 and 140 parts of ethanol solutions, stirring changes
After property 1h, filter, wash modification wood fibre；
Naoh concentration is 2%, urea concentration 4%, ethanol solution concentration 30%；Hot pressing pressure is 2MPa.
Embodiment 2
A kind of water-fast method of modifying of wood rubber fiberboard, which is characterized in that include the following steps, following raw materials by weight:
(1) surface modifying method of waste and old rubber particle:
Into 30 parts of waste and old rubber particles, deionized water is added in 1:7, and after being sufficiently stirred, 8 parts of sodium hypochlorite and 1.8 portions of dense salt are added
Acid, after modification 13min, filter, be washed to it is neutral, refilter, 10h is dried in 85 DEG C of baking ovens and obtains the modified waste and old rubber in surface
Glue particle；
Wherein, waste and old rubber particle is 30 mesh, and the concentration of concentrated hydrochloric acid is 38%；
(2) the surface graft modification method of nano silica:
By 9 parts of nano silicas in 105 DEG C of drying boxes after dry 10h, 1:5 is dissolved in dehydrated alcohol, high speed shear dispersion
40min obtains component A；Into 0.3 part of Silane coupling agent KH550,1:10 adds ethanol water to be uniformly mixed, and tune pH is stood after being 9
35min, then 1:1 is mixed with component A by volume, is sheared 20min, re-ultrasonic dispersion 40min in 85 DEG C of water-bath high speeds, is taken out
Filter, it is dry, grind surface graft modification nano silica；
Wherein, ethanol water concentration is 45%；
(3) preparation of the wooden rubber fiberboard:
4 parts of silane coupling agent Si69 are dissolved in 20 parts of dehydrated alcohols, then uniformly surface obtained by sprinkling in (1) is modified gives up
On old rubber grain, dry in the air to 15min, then with gained surface graft modification in the wood fibre of 90 parts of modifications and (2)
Nano silica mixes, and sprays 12 parts of adhesives, and 4min molding is suppressed on 160 DEG C of hot presses, obtains the wooden rubber fiber
Plate；
Wherein, the modification processing method of wood fibre: into 90 parts of wood fibres, sodium hydroxide-aqueous solution of urea is added in 1:5, is stirred
It mixes and is uniformly dispersed, at 55 DEG C after dipping pretreatment 2h, mixed with 3 parts of coupling agent LD-125 and 180 parts of ethanol solutions, stirring changes
After property 2h, filter, wash modification wood fibre；
Naoh concentration is 2%, urea concentration 4%, ethanol solution concentration 40%；Hot pressing pressure is 4MPa.
After plate after hot pressing of the embodiment of the present invention is displayed 48 hours in 20 DEG C, 65% environment of relative humidity, referring to country
Standard GB/T17657-1999 tests the performance of the wooden rubber fiberboard, has according to the wooden rubber fiberboard of the method for the present invention preparation excellent
Different mechanical strength and water resistance, tensile strength 39MPa, elasticity modulus 4.9GPa, impact strength 41KJ/m2, 2h suction
Water thickness swelling is 1%.
Claims (5)
1. a kind of water-fast method of modifying of wood rubber fiberboard, which is characterized in that include the following steps, following raw materials are by weight
Meter:
(1) surface modifying method of waste and old rubber particle:
Into 10-30 parts of waste and old rubber particles, deionized water is added in 1:6-7, after being sufficiently stirred, be added 3-8 part sodium hypochlorite with
0.8-1.8 parts of concentrated hydrochloric acids, after modification 7-13min, filter, be washed to it is neutral, refilter, dry 10- in 80-85 DEG C of baking oven
12h obtains the modified waste and old rubber particle in surface；
(2) the surface graft modification method of nano silica:
By 7-9 parts of nano silicas in 100-105 DEG C of drying box after dry 10-12h, 1:5 is dissolved in dehydrated alcohol, high speed
Shearing dispersion 30-40min obtains component A；Into 0.2-0.3 parts of Silane coupling agent KH550s, 1:10 adds ethanol water to be uniformly mixed,
Tune pH stands 30-35min after being 9, then 1:1 is mixed with component A by volume, shears 20- in 80-85 DEG C of water-bath high speed
30min, re-ultrasonic dispersion 30-40min, filter, be dry, grinding surface graft modification nano silica；
(3) preparation of the wooden rubber fiberboard:
2-4 parts of silane coupling agent Si69 are dissolved in 10-20 parts of dehydrated alcohols, then uniformly sprinkling changes on gained surface in (1)
Property waste and old rubber particle on, dry in the air to 10-15min, then with gained table in the wood fibre of 70-90 parts of modifications and (2)
The nano silica of face graft modification mixes, and sprays 10-12 parts of adhesives, suppresses 4-7min on 150-160 DEG C of hot press
Molding obtains the wooden rubber fiberboard.
2. a kind of water-fast method of modifying of wooden rubber fiberboard according to claim 1, which is characterized in that give up in step (1)
Old rubber grain is 15-30 mesh, and the concentration of concentrated hydrochloric acid is 36-38%.
3. a kind of water-fast method of modifying of wooden rubber fiberboard according to claim 1, which is characterized in that second in step (2)
Alcohol solution concentration is 35-45%.
4. a kind of water-fast method of modifying of wooden rubber fiberboard according to claim 1, which is characterized in that wooden in step (3)
The modification processing method of matter fiber: into 70-90 parts of wood fibres, sodium hydroxide-aqueous solution of urea is added in 1:5, is dispersed with stirring
It is even, at 50-55 DEG C after dipping pretreatment 2-3h, mixes, stir with LD-125 and 140-180 parts of ethanol solutions of 2-3 parts of coupling agents
After mixing modified 1-2h, filter, wash modification wood fibre；
Wherein, naoh concentration 2%, urea concentration 4%, ethanol solution concentration 30-40%.
5. a kind of water-fast method of modifying of wooden rubber fiberboard according to claim 1, which is characterized in that hot in step (3)
Pressure pressure is 2-4MPa.
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| CN201910370828.9A CN110216767A (en) | 2019-05-06 | 2019-05-06 | A kind of water-fast method of modifying of wood rubber fiberboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361550A (en) * | 2023-11-23 | 2024-01-09 | 浙江阿斯克建材科技股份有限公司 | Method for nanocrystallizing calcium silicate and peeling nanosheets |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361550A (en) * | 2023-11-23 | 2024-01-09 | 浙江阿斯克建材科技股份有限公司 | Method for nanocrystallizing calcium silicate and peeling nanosheets |
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Application publication date: 20190910 |