CN110228116A - A kind of preparation method of resin tooth timber - Google Patents
A kind of preparation method of resin tooth timber Download PDFInfo
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- CN110228116A CN110228116A CN201910632396.4A CN201910632396A CN110228116A CN 110228116 A CN110228116 A CN 110228116A CN 201910632396 A CN201910632396 A CN 201910632396A CN 110228116 A CN110228116 A CN 110228116A
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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
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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
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure
-
- 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract
The invention discloses a kind of preparation methods of resin tooth timber, belong to building material technical field.The present invention destroys the ultra microstructure of timber by hydro-thermal and high pressure explosion treatment, it is allowed to become loose hollow cellular by solid threadiness, particle ultramicronising, crystallinity reduces, in order to infiltrate haze tallow silicone oil, it finally will be in rubber compound and reinforcing fiber mixed injection vacuum-extruder, it squeezes into the mold equipped with pretreatment timber, demoulding obtains resin tooth timber after cooling, resin used is the poly- fluororesin with lubricity, thus the resin layer abrasion loss of wood surface of the present invention is low, and timber is placed in after haze tallow silicone oil impregnating by pressure, the silica being introduced into timber duct also has reinforcing effect to timber endothecium structure itself, it has a extensive future.
Description
Technical field
The invention discloses a kind of preparation methods of resin tooth timber, belong to building material technical field.
Background technique
For timber as reproducible natural material unique in the big construction material in the world today four, it is not only with higher strong
Again than, heat-insulation and heat-preservation outstanding, sound-adsorbing sound-insulating hung, shock resistance and naturally beautiful, the environmental harmonies performance such as texture is pleasant, and
Have many advantages, such as power consumption of polymer processing it is few, it is environmentally friendly, natural degradation and can recycle.Therefore as people are to energy conservation and environmental protection, sustainable
Development is increasingly paid attention to, and demand of the people to timber is also constantly being grown.Protection of the various countries to environment and the forest reserves at present,
So that the high-quality timber of engineering is deficienter, promote various countries by the application of artificial forest fast growing wood, low-grade wood as research weight
Point.
In order to protect the primary characteristic of timber, improve the decoration function and service life of woodwork, certain table need to be used
Surface treatment technology improves its aesthetic, mechanical property, wearability, durability, improve timber processing performance and assigns timber
The new functions such as surface is heat-insulated, resistance to combustion, mothproof, insulation, conduction widen the application neck of timber to improve the use value of timber
Domain.
There is mechanical property more better than timber currently with the composite wood of resin tooth, that improves timber uses valence
Value, realize the Optimum utilization of low-grade wood, expanded the application field of wood materials significantly, not only can be widely applied to it is civilian live
The infrastructure such as residence, commercial building, highway, bridge field, it can also be used to the high-tech sectors such as naval vessel, communications and transportation.
At present using various unsaturated polyester resins, phenolic resin, epoxy resin, resorcinol resin, ammonia in technology
The reinforcing material of base resin, vinylite as timber, the intensity of timber and the wearability on surface are still bad, resin used
Easy to oxidize, the feature of environmental protection is also to be improved.
Therefore, inventing a kind of high-intensitive, wear-resisting resin tooth type timber has positive effect.
Summary of the invention
Present invention mainly solves the technical issues of, for prior art resin to timber enhancing after, intensity and surface are resistance to
The still general defect of mill property, provides a kind of resin tooth timber.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of resin tooth timber preparation method, it is characterised in that specific preparation step are as follows:
(1) cotton wood is taken to be put into temperature and humidity regulator, heating boiling handles 3~5h, and the cotton wood after boiling is put
Enter in pressurized tank, carry out explosion treatment, after pressure reaches designated value, opens pressure-relief valve rapidly, release is up to normal pressure, then again
Boosting, takes out cotton wood after multiple explosion treatment repeatedly, is dried in the baking oven that temperature is 80~100 DEG C to poplar wood
Moisture content in material is 4~5%, the timber being dried；
(2) timber of drying process is placed in impregnating autoclave, impregnating autoclave is vacuumized, be then injected into haze tallow silicone oil, vacuum
It negative pressure impregnation 2~3 hours, is then vented, then pressurizes, continue dipping 2~3 hours, taking-up is placed in after ventilation dries, and is obtained
Pre-process timber；
(3) in mass ratio it is that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber, injects in vacuum-extruder, controls extruder machine
Head temperature is 330~350 DEG C, and extrusion revolving speed is 30~35r/min, and extrudate is squeezed into the mold equipped with pretreatment timber while hot
In, it is cooled to room temperature, demoulding obtains a kind of resin tooth timber；
The specific preparation step of the rubber compound are as follows:
(1) it takes bauxite to be placed in 30~40min of ball milling in ball mill, obtains the bauxite that partial size is 0.5~1.0mm
Grain, 80~90mL soybean oil is placed in a beaker, and is heated to 200~220 DEG C, then 30~40g bauxite grains are added
In beaker, 20~25min is stirred, obtains modified bauxite；
(2) inclined fluoroether rubber, polytetrafluoroethylene (PTFE) are mixed, is added in open mill, then alumina powder, modified bauxite are added
Enter in open mill and be kneaded, control melting temperature is 300~350 DEG C, obtains rubber compound；
The specific preparation step of haze tallow silicone oil are as follows:
200~300g hullessbarley seed, the sodium silicate solution that 400~450mL mass fraction is 35% are put into stirring
In the water-bath kettle of device, heating water bath is warming up to 70~80 DEG C, starts blender, stirs after 3~5h and is with mass fraction
95% glacial acetic acid moves into supercentrifuge after adjusting pH to neutrality, with the revolving speed of 3500~3700r/min, high speed centrifugation 12
~15min, removes supernatant liquor, and isolated lower sediment after being washed with water precipitating 2~3 times, gained is precipitated and is mixed with white oil
It closes, is placed in cucurbit, Heat preservation distills 2~3h to 80~85 DEG C, and collection obtains haze tallow silicone oil.
In a kind of specific preparation step (1) of resin tooth timber temperature and humidity regulator control relative humidity be 80~
85%, temperature is 80~90 DEG C.
It is 1.2 that explosion treatment time control pressing pressure is carried out in a kind of specific preparation step (1) of resin tooth timber
~2.5MPa, temperature are 80~90 DEG C.
Vacuumizing rear pressure in a kind of specific preparation step (2) of resin tooth timber in impregnating autoclave is 0.003
~0.005MPa, increased pressure are 3~4MPa.
Reinforcing fiber is rock wool fibers, mineral wool fibre in a kind of specific preparation step (3) of resin tooth timber
One kind of dimension, and be the chopped strand that length is 2~3mm.
Mold equipped with pretreatment timber in a kind of specific preparation step (3) of resin tooth timber is slightly larger than pre-
Timber is handled, pretreatment wood surface passes through silicon fluoride coupling agent perfluor certain herbaceous plants with big flowers base trimethyl silane or perfluoro capryl trimethyl silane
Processing.
Each component raw material in the specific preparation step of the rubber compound (2), according to parts by weight, including 20~30 parts of inclined fluorine
Ether rubber, 50~60 parts of polytetrafluoroethylene (PTFE), 10~15 parts of alumina powders, 8~10 parts of modified bauxites.
Gained precipitating and white oil mixing mass ratio are preferably 1 ︰ 3 in the specific preparation step of haze tallow silicone oil.
The beneficial effects of the present invention are:
(1) bauxite ball milling will be obtained bauxite grains by the present invention, then by bauxite and soybean oil Hybrid Heating, be obtained
Inclined fluoroether rubber, polytetrafluoroethylene (PTFE) are mixed, are added in open mill by modified bauxite, incorporation alumina powder, modified bauxite,
Mixing obtains rubber compound, using hullessbarley seed, sodium silicate solution as raw material, reacts by thermokalite, the precipitating that pickling reheating is dried
Object mixes distillation with white oil and haze tallow silicone oil is prepared, and destroys the ultra microstructure of timber by hydro-thermal and high pressure explosion treatment,
It is allowed to become loose hollow cellular by solid threadiness, particle ultramicronising, crystallinity reduces, in order to infiltrate haze tallow silicon
Oil in rubber compound and reinforcing fiber mixed injection vacuum-extruder, will finally be squeezed into the mold equipped with pretreatment timber, cooling
Demoulding obtains resin tooth timber afterwards, uses reinforcing fiber as polyflon layer packing material, Ke Yiti in the present invention
It rises poly- fluororesin and carries pressure, enhance its toughness, since reinforcing fiber of the invention is containing silica fibre, the modified aluminium in surface
Alumina particle can make incorporation alumina powder and reinforcing fiber between generate stronger binding force, formed very strong physical bond face or
Person's coherent boundary makes aluminium oxide be present in reinforcing fiber surface layer with thin layer form, since interface is smooth straight, in polytetrafluoroethylene (PTFE)
When resin layer bears load, reinforcing fiber can be smoothly passed to, in addition, aluminium oxide can be to avoid as reinforcing fiber protective layer
Fibre property is caused to damage when reinforcing fiber is loaded, and complex reaction occurs for aluminium oxide and other organic principles, avoids giving birth to
At uncontrollable and non-uniform Distribution brittlement phase, to improve the intensity of resin layer；
(2) bauxite grains surface and Al after modification in the present invention2O3Surface coupling forms silicon oxygen long-chain, mixed
During refining, silicon oxygen long-chain and PTFE long chain are entangled to each other, and interpenetrating has reached good couplingization, make the interior of composite material
Portion's microstructure changes, and strand regularity improves, and material surface energy is promoted, and leads to the attachment on resin layer mating plate surface
Effect enhancing, so that the more difficult peeling of the transfer layer generated in friction process, make bauxite grains fills up effect enhancing, together
The resin of Shi Suoyong is the poly- fluororesin with lubricity, thus the resin layer abrasion loss of wood surface of the present invention is low, and timber
It is placed in after using haze tallow silicone oil impregnating by pressure, being introduced into silica in timber duct also there is enhancing to imitate timber endothecium structure itself
Fruit has a extensive future.
Specific embodiment
It takes bauxite to be placed in 30~40min of ball milling in ball mill, obtains the bauxite grains that partial size is 0.5~1.0mm, it will
80~90mL soybean oil is placed in a beaker, and is heated to 200~220 DEG C, then beaker is added in 30~40g bauxite grains
In, 20~25min is stirred, modified bauxite is obtained；According to parts by weight, 20~30 parts of inclined fluoroether rubbers, 50~60 parts are gathered
Tetrafluoroethene mixing, is added in open mill, then 10~15 parts of alumina powders, 8~10 parts of modified bauxites are added in open mill
It is kneaded, control melting temperature is 300~350 DEG C, obtains rubber compound；Cotton wood is taken to be put into temperature and humidity regulator, in phase
To humidity be 80~85% and temperature be 80~90 DEG C under the conditions of heating boiling handle 3~5h, the cotton wood after boiling is put
Enter in pressurized tank, explosion treatment is carried out under conditions of pressure is 1.2~2.5MPa and temperature is 80~90 DEG C, when pressure reaches
After designated value, pressure-relief valve is opened rapidly, then release boosts again until normal pressure, takes out poplar after multiple explosion treatment repeatedly
Timber, the moisture content dried in the baking oven that temperature is 80~100 DEG C into cotton wood is 4~5%, is dried
Timber；200~300g hullessbarley seed, the sodium silicate solution that 400~450mL mass fraction is 35% are put into blender
Water-bath kettle in, heating water bath is warming up to 70~80 DEG C, starts blender, and stirring after 3~5h with mass fraction is 95%
Glacial acetic acid adjust pH to neutrality after move into supercentrifuge, with the revolving speed of 3500~3700r/min, high speed centrifugation 12~
15min, removes supernatant liquor, and gained precipitating after being washed with water precipitating 2~3 times, is pressed matter with white oil by isolated lower sediment
Amount is placed in cucurbit, Heat preservation distills 2~3h to 80~85 DEG C, collects haze tallow silicone oil than being that 1 ︰ 3 is mixed；At dry
The timber of reason is placed in impregnating autoclave, and impregnating autoclave is evacuated to 0.003~0.005MPa, is then injected into haze tallow silicone oil, and vacuum is negative
Pressure dipping 1~4 hour, is then vented, is then forced into 3~4MPa, continue dipping 1~4 hour, and taking-up is placed in ventilation and dries
Afterwards, it obtains pretreatment timber: being in mass ratio that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber, inject in vacuum-extruder, control is squeezed
Machine head temperature is 330~350 DEG C out, and extrusion revolving speed is 30~35r/min, extrudate is squeezed into while hot equipped with pretreatment timber
Mold in, be cooled to room temperature, demoulding obtains a kind of resin tooth timber, and the reinforcing fiber is rock wool fibers, mineral wool
One kind of fiber, and be the chopped strand that length is 2~3mm, the mold equipped with pretreatment timber is slightly larger than pretreatment
Timber, pretreatment wood surface pass through at silicon fluoride coupling agent perfluor certain herbaceous plants with big flowers base trimethyl silane or perfluoro capryl trimethyl silane
Reason.
Example 1
Bauxite is taken to be placed in ball milling 30min in ball mill, obtaining partial size is 0.5 bauxite grains, and 80mL soybean oil is set
In beaker, 200 is heated to, then 30g bauxite grains are added in beaker, stirs 20min, obtain modified bauxite；
According to parts by weight, 20 parts of inclined fluoroether rubbers, 50 parts of polytetrafluoroethylene (PTFE) are mixed, is added in open mill, then by 10 parts of aluminium oxide
Powder, 8 parts of modified bauxites are added in open mill and are kneaded, and control melting temperature is 300 DEG C, obtain rubber compound；Take poplar wooden
Material is put into temperature and humidity regulator, and boiling is heated under the conditions of relative humidity is 80% and temperature is 80 DEG C and handles 3h, after boiling
Cotton wood be put into pressurized tank, explosion treatment is carried out under conditions of pressure is 1.2MPa and temperature is 80 DEG C, works as pressure
After reaching designated value, pressure-relief valve is opened rapidly, then release is boosted again, taken after multiple explosion treatment repeatedly until normal pressure
Cotton wood out, the moisture content dried in the baking oven that temperature is 80 DEG C into cotton wood is 4%, the wood being dried
Material；200g hullessbarley seed, the sodium silicate solution that 400mL mass fraction is 35% are put into the water-bath kettle with blender
In, heating water bath is warming up to 70 DEG C, starts blender, uses the glacial acetic acid that mass fraction is 95% to adjust pH to neutrality after stirring 3h
It moves into supercentrifuge afterwards, with the revolving speed of 3500r/min, high speed centrifugation 12min removes supernatant liquor, isolated lower layer
Precipitating, after being washed with water precipitating 2 times, it is that 1 ︰ 3 is mixed that gained is precipitated with white oil in mass ratio, is placed in cucurbit, and heat preservation adds
Heat distills 2h to 80 DEG C, collects haze tallow silicone oil；The timber of drying process is placed in impregnating autoclave, impregnating autoclave is evacuated to
0.001MPa, is then injected into haze tallow silicone oil, and negative pressure of vacuum impregnates 4 hours, is then vented, is then forced into 3MPa, continue dipping 1
Hour, taking-up is placed in after ventilation dries, and it obtains pretreatment timber: being in mass ratio that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber,
It injects in vacuum-extruder, control cross-head temperature is 330 DEG C, and extrusion revolving speed is 30r/min, and extrudate is squeezed into while hot
It in mold equipped with pretreatment timber, is cooled to room temperature, demoulding obtains a kind of resin tooth timber, and the reinforcing fiber is glass
Glass cotton fiber, and be the chopped strand that length is 2mm, the mold equipped with pretreatment timber is slightly larger than pretreatment timber,
Wood surface is pre-processed to handle by silicon fluoride coupling agent perfluoro capryl trimethyl silane.
Example 2
It takes bauxite to be placed in ball milling 40min in ball mill, the bauxite grains that partial size is 1.0mm is obtained, by 90mL soybean
Oil is placed in a beaker, and is heated to 220 DEG C, then 0g bauxite grains are added in beaker, is stirred 25min, obtain modified aluminium
Alumina；According to parts by weight, 30 parts of inclined fluoroether rubbers, 60 parts of polytetrafluoroethylene (PTFE) are mixed, is added in open mill, then by 15 parts of oxygen
Change aluminium powder, 10 parts of modified bauxites are added in open mills and are kneaded, and control melting temperature is 350 DEG C, obtain rubber compound；Take poplar
Timber is put into temperature and humidity regulator, and boiling is heated under the conditions of relative humidity is 85% and temperature is 90 DEG C and handles 5h, by water
Cotton wood after boiling is put into pressurized tank, pressure be 2.5MPa and it is at a temperature of 90 °C under the conditions of carry out explosion treatment, when
After pressure reaches designated value, pressure-relief valve is opened rapidly, then release is boosted, repeatedly multiple explosion treatment again until normal pressure
After take out cotton wood, it is 5% that moisture content into cotton wood is dried in the baking oven that temperature is 100 DEG C, obtains dry place
The timber of reason；By 300g hullessbarley seed, sodium silicate solution that 450mL mass fraction is 35%, to be put into the water-bath with blender anti-
Answer in kettle, heating water bath is warming up to 80 DEG C, starts blender, stir after 5h with the glacial acetic acid that mass fraction is 95% adjust pH to
It is moved into supercentrifuge after neutrality, with the revolving speed of 3700r/min, high speed centrifugation 15min removes supernatant liquor, isolated
Lower sediment, after being washed with water precipitating 3 times, it is that 1 ︰ 3 is mixed that gained is precipitated with white oil in mass ratio, is placed in cucurbit, is protected
Temperature is heated to 85 DEG C, distills 3h, collects haze tallow silicone oil；The timber of drying process is placed in impregnating autoclave, impregnating autoclave is vacuumized
To 0.005MPa, it is then injected into haze tallow silicone oil, negative pressure of vacuum impregnates 4 hours, is then vented, is then forced into 3MPa, continue to soak
Stain 4 hours, taking-up was placed in after ventilation dries, and is obtained pretreatment timber: being in mass ratio that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber
It closes, injects in vacuum-extruder, control cross-head temperature is 350 DEG C, and extrusion revolving speed is 35r/min, while hot by extrudate
It squeezes into the mold equipped with pretreatment timber, is cooled to room temperature, demoulding obtains a kind of resin tooth timber, the reinforcing fiber
It for microglass fiber, and is the chopped strand that length is 3mm, the mold equipped with pretreatment timber is slightly larger than pretreatment wood
Material, pretreatment wood surface pass through silicon fluoride coupling agent perfluor certain herbaceous plants with big flowers base trimethyl silane.
Example 3
It takes bauxite to be placed in ball milling 35min in ball mill, the bauxite grains that partial size is 0.7mm is obtained, by 85mL soybean
Oil is placed in a beaker, and is heated to 220 DEG C, then 35g bauxite grains are added in beaker, is stirred 23min, obtain modified aluminium
Alumina；According to parts by weight, 25 parts of inclined fluoroether rubbers, 55 parts of polytetrafluoroethylene (PTFE) are mixed, is added in open mill, then by 13 parts of oxygen
Change aluminium powder, 9 parts of modified bauxites are added in open mills and are kneaded, and control melting temperature is 330 DEG C, obtain rubber compound；Take poplar
Timber is put into temperature and humidity regulator, and boiling is heated under the conditions of relative humidity is 83% and temperature is 85 DEG C and handles 4h, by water
Cotton wood after boiling is put into pressurized tank, and explosion treatment is carried out under conditions of pressure is 1.5MPa and temperature is 85 DEG C, when
After pressure reaches designated value, pressure-relief valve is opened rapidly, then release is boosted, repeatedly multiple explosion treatment again until normal pressure
After take out cotton wood, it is 4% that moisture content into cotton wood is dried in baking oven at a temperature of 90 °C, is dried
Timber；250g hullessbarley seed, the sodium silicate solution that 425mL mass fraction is 35% are put into the water-bath with blender
In kettle, heating water bath is warming up to 75 DEG C, starts blender, uses the glacial acetic acid that mass fraction is 95% to adjust pH into after stirring 4h
Property after move into supercentrifuge, with the revolving speed of 3600r/min, high speed centrifugation 13min removes supernatant liquor, under isolated
Layer precipitating, after being washed with water precipitating 3 times, it is that 1 ︰ 3 is mixed that gained is precipitated with white oil in mass ratio, is placed in cucurbit, is kept the temperature
85 DEG C are heated to, 3h is distilled, collects haze tallow silicone oil；The timber of drying process is placed in impregnating autoclave, impregnating autoclave is evacuated to
0.004MPa, is then injected into haze tallow silicone oil, and negative pressure of vacuum impregnates 4 hours, is then vented, is then forced into 3MPa, continue dipping 4
Hour, taking-up is placed in after ventilation dries, and it obtains pretreatment timber: being in mass ratio that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber,
It injects in vacuum-extruder, control cross-head temperature is 320 DEG C, and extrusion revolving speed is 33r/min, and extrudate is squeezed into while hot
It in mold equipped with pretreatment timber, is cooled to room temperature, demoulding obtains a kind of resin tooth timber, and the reinforcing fiber is rock
Cotton fiber, and be the chopped strand that length is 3mm, the mold equipped with pretreatment timber is slightly larger than pretreatment timber, in advance
It handles wood surface and passes through silicon fluoride coupling agent perfluor certain herbaceous plants with big flowers base trimethyl silane.
Comparative example
As a comparison case with cotton wood
To the carry out performance detection of the cotton wood in resin tooth timber produced by the present invention and comparative example, testing result
It is as shown in table 1:
1, test method:
Abrasion loss test is detected by 3960 standard of GB/T；
PVvalue testing is detected by 3960 standard of GB/T；
Bending strength test is by test method referring to " GB/1936.1 Method of testing in bending strength of wood ".；
Deflection Modulus of Elasticity tests test experiments method referring to " GB/1936.2 wood modulus of elasticity test method "；
Fracture toughness testing is detected by 7732 standard of GB.
1 oil seal material properties measurement result of table
Low according to the resin tooth timber abrasion loss produced by the present invention of data among the above, coefficient of friction is small, mechanical property
Can be good, bending strength is high, and Deflection Modulus of Elasticity test is high, and fracture toughness is high, and it is not easy to break, it has broad application prospects.
Claims (8)
1. a kind of preparation method of resin tooth timber, it is characterised in that specific preparation step are as follows:
(1) log scale is taken to be put into temperature and humidity regulator, heating boiling handles 3~5h, and the log scale after boiling is put into pressurized tank
In, explosion treatment is carried out, after pressure reaches designated value, opens pressure-relief valve rapidly, then release is boosted, such as again until normal pressure
Log scale is taken out after this repeated multiple times explosion treatment, drying is aqueous into log scale in the baking oven that temperature is 80~100 DEG C
Rate is 4~5%, the timber being dried；
(2) timber of drying process is placed in impregnating autoclave, impregnating autoclave is vacuumized, be then injected into haze tallow silicone oil, negative pressure of vacuum
Dipping 2~3 hours, is then vented, then pressurizes, continue dipping 2~3 hours, and taking-up is placed in after ventilation dries, and obtains pre- place
Manage timber；
(3) in mass ratio it is that 10 ︰ 1 are mixed by rubber compound, reinforcing fiber, injects in vacuum-extruder, controls cross-head temperature
Degree is 330~350 DEG C, and extrusion revolving speed is 30~35r/min, and extrudate is squeezed into while hot in the mold equipped with pretreatment timber,
It is cooled to room temperature, demoulding obtains a kind of resin tooth timber；
The specific preparation step of the rubber compound are as follows:
(1) it takes bauxite to be placed in 30~40min of ball milling in ball mill, obtains the bauxite grains that partial size is 0.5~1.0mm, it will
80~90mL soybean oil is placed in a beaker, and is heated to 200~220 DEG C, then beaker is added in 30~40g bauxite grains
In, 20~25min is stirred, the modified bauxite grains in surface are obtained；
(2) inclined fluoroether rubber, polytetrafluoroethylene (PTFE) are mixed, is added in open mill, then the bauxite that alumina powder, surface is modified
Particle is added in open mill and is kneaded, and control melting temperature is 300~350 DEG C, obtains rubber compound；
The specific preparation step of haze tallow silicone oil are as follows:
200~300g hullessbarley seed, the sodium silicate solution that 400~450mL mass fraction is 35% are put into blender
In water-bath kettle, heating water bath is warming up to 70~80 DEG C, starts blender, uses mass fraction for 95% after stirring 3~5h
Glacial acetic acid moves into supercentrifuge after adjusting pH to neutrality, with the revolving speed of 3500~3700r/min, high speed centrifugation 12~
15min, removes supernatant liquor, and isolated lower sediment after being washed with water precipitating 2~3 times, gained is precipitated and is mixed with white oil
It closes, is placed in cucurbit, Heat preservation distills 2~3h to 80~85 DEG C, and collection obtains haze tallow silicone oil.
2. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: a kind of resin
Temperature and humidity regulator control relative humidity is 80~85% in the specific preparation step (1) of enhancing timber, temperature is 80~90 DEG C.
3. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: a kind of resin
The middle progress explosion treatment time control pressing pressure of specific preparation step (1) for enhancing timber is 1.2~2.5MPa, temperature is 80~90
℃。
4. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: a kind of resin
Enhance and vacuumize rear pressure in the specific preparation step (2) of timber in impregnating autoclave as 0.003~0.005MPa, increased pressure is
3~4MPa.
5. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: a kind of resin
Enhance timber specific preparation step (3) in reinforcing fiber be rock wool fibers, microglass fiber one kind, and be length be 2~
The chopped strand of 3mm.
6. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: a kind of resin
Enhance the mold equipped with pretreatment timber in the specific preparation step (3) of timber slightly larger than pretreatment timber, pre-processes timber table
Face is handled by silicon fluoride coupling agent perfluor certain herbaceous plants with big flowers base trimethyl silane or perfluoro capryl trimethyl silane.
7. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: the rubber compound tool
Each component raw material in preparation step (2), according to parts by weight, including 20~30 parts of inclined fluoroether rubbers, 50~60 parts of polytetrafluoros
The modified bauxite grains in ethylene, 10~15 parts of alumina powders, 8~10 parts of surfaces.
8. a kind of preparation method of resin tooth timber according to claim 1, it is characterised in that: the haze tallow silicone oil
Gained precipitating and white oil mixing mass ratio are preferably 1 ︰ 3 in specific preparation step.
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| CN201910632396.4A CN110228116A (en) | 2019-07-13 | 2019-07-13 | A kind of preparation method of resin tooth timber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098362A (en) * | 2019-12-24 | 2020-05-05 | 江苏华友装饰工程有限公司 | Preparation method of internal and external reinforced natural wood veneer |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098362A (en) * | 2019-12-24 | 2020-05-05 | 江苏华友装饰工程有限公司 | Preparation method of internal and external reinforced natural wood veneer |
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