CN106363731A - Modifying agent used for strengthening dimensional stability of compound wax emulsion of quick-growing wood - Google Patents

Modifying agent used for strengthening dimensional stability of compound wax emulsion of quick-growing wood Download PDF

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Publication number
CN106363731A
CN106363731A CN201610884467.6A CN201610884467A CN106363731A CN 106363731 A CN106363731 A CN 106363731A CN 201610884467 A CN201610884467 A CN 201610884467A CN 106363731 A CN106363731 A CN 106363731A
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China
Prior art keywords
parts
modifying agent
wood
wax emulsion
dimensional stability
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Withdrawn
Application number
CN201610884467.6A
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Chinese (zh)
Inventor
刘伟
刘凯
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FUYANG WEIYE FURNITURE Co Ltd
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FUYANG WEIYE FURNITURE Co Ltd
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Priority to CN201610884467.6A priority Critical patent/CN106363731A/en
Publication of CN106363731A publication Critical patent/CN106363731A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
    • 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
    • B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
    • C08G12/36—Ureas; Thioureas
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/40—Chemically modified polycondensates
    • 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
    • B27K2240/00—Purpose of the treatment
    • 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/20—Removing fungi, molds or insects
    • 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/70—Hydrophobation treatment

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention discloses a modifying agent used for strengthening dimensional stability of compound wax emulsion of quick-growing wood. The modifying agent is prepared from the following raw materials in parts by weight: 3-3.5 parts of formaldehyde, 2-3 parts of urea, 1.5-2 parts of hexamethylenetetramine, 0.02-0.03 part of maleic anhydride, a proper amount of acetic acid, a proper amount of ammonia water, a proper amount of deionized water, 20-23 parts of dihydroxymethyl dihydroxyl ethylene urea with solid content being 42wt%, 1.5-2 parts of magnesium chloride hexahydrate, 10-11 parts of silica sol, 3-4 parts of paraffin, 2-3 parts of microcrystalline wax, 3-4 parts of fatty alcohol-polyoxyethylene ether and 2-2.5 parts of polyvinyl alcohol. The modifying agent disclosed by the invention is good in stability, is safe and environmentally-friendly and is suitable for industrial production; impregnation pressure treatment is carried out on the quick-growing wood, so that the modifying agent can penetrate into the wood to achieve waterproof and flexible effects, and therefore, the modified wood is not liable to crack, is resistant to moisture, is good in dimension stability; and furniture manufactured from the wood is strong and durable in use, is waterproof and mildew-proof, and can be used outdoors.

Description

A kind of compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability
Technical field
The present invention relates to Wood Property Improvement field, more particularly, to a kind of compound wax emulsion enhancing chi for fast growing wood The modifying agent of very little stability.
Background technology
Timber and wood materials, as the important means of production in social and economic construction, are not only widely used in daily life In every field, be also widely used for the industrial circles such as traffic, building and space flight.With the forest reserves in world wide increasingly Shortage, particularly precious timber quantity increasingly falls sharply, and the substantial amounts of quick growing species of trees is widely cultivated and meets in global range in recent years Wood supply.Compared with natural forest, by growth year is short etc., factor is limited the quick growing species of trees, leads to early late wood's difference very Greatly, material is loose, and mechanical property is poor, thus do not pass through to process artificial fast-growing forest timber be difficult to economical high used in Furniture manufacture etc. Added value field.Due to timber be a kind of natural there is porous macromolecular material, by the little, shapes of different fire and different company The tubular units of understanding and considerate condition are cross-linked and form, and have fluid-pervious, and its distinctive vesicular texture carries for Wooden modifying Supply basis.Physically or chemically modification is carried out to fast-growing forest, not only increases the economic value added of fast-growing forest, also Serve the effect of protection rare tree resource.Wooden modifying refers to using physics, the method such as chemical and mechanical to logs of wood Carry out manufacturability process, make physico-mechanical propertieses such as density of wood, hardness, intensity and dimensional stability etc. obtain good changing Kind.Chemical modification is modified Main Means, the selection of chemical impregnation medicinal liquid wherein in modifying process and the dipping of fast-growing forest The drying process of material is the research emphasis of Chinese scholars.But it is as the raising of living standards of the people and the increasing of environmental consciousness By force, to human health angle, the residual how reducing chemical impregnation medicinal liquid in modified material is chemical modification fast-growing forest Urgent problem, how by fast-growing forest functionalization improvement Study on Integration towards environmental protection and functionalization to be therefore The modified new direction of this paper and from now on fast-growing forest.
" composite modifier is to quick growth poplar wood and Chinese toon wood Modification effect and study mechanism " is in a literary composition by low point of autonomous synthesis Son modification nitrogen footpath methyl performed polymer is combined with hydroxymethyl-2 dihydroxy-ethylene urea, makes many work(by adding plurality of stable agent Can type chemical modifier, preliminary study has been carried out to the timber physicochemical property after before modified and mechanism of modification, by impregnation drying Substantially, heat stability is improved the main mechanical strength improving effect of the modified material after process, and modifying agent is impregnated into wood simultaneously When material is internal, self-condensation effect can be occurred to form tridimensional network, it is higher that modifying agent serves as intensity in wood internal Implant is especially more obvious to dimensional stability and mechanical property improvement result.Although modified fast growing wood is in mechanics Increase in performance, but because it has not significantly affected fast growing wood furniture, open air out of doors to absorptive reduction The application of wooden clothing arts, needs its composite modifier to be modified further it is also desirable to other additional properties can be had To meet the demand to fast growing wood such as outdoor furniture.
Content of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of compound wax emulsion for fast growing wood Strengthen the modifying agent of dimensional stability.
The present invention is achieved by the following technical solutions:
A kind of compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability, by the raw material preparation of following weight portion Make: formaldehyde 3-3.5, carbamide 2-3, hexamethylenetetramine 1.5-2, maleic anhydride 0.02-0.03, appropriate acetic acid, appropriate ammonia, Appropriate deionized water, solid content are the hydroxymethyl-2 dihydroxy-ethylene urea 20-23 of 42wt%, Magnesium dichloride hexahydrate 1.5-2, silicon are molten Glue 10-11, paraffin 3-4, microwax 2-3, fatty alcohol-polyoxyethylene ether 3-4, polyvinyl alcohol 2-2.5.
A kind of described compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability, by step in detail below Make:
(1) formaldehyde, carbamide, hexamethylenetetramine are put in reactor, add maleic anhydride, be heated to completely molten while stirring Solution, adds the deionized water of total amount 1.5-2 times amount, is heated to 70-80 DEG C, uses acetic acid and ammonia to adjust after stirring reaction 3-4 hour Section ph value is 7, terminates reaction；
(2) deionized water of 4-5 times amount will be added in fatty alcohol-polyoxyethylene ether, stir to after be completely dissolved and add polyethylene Alcohol, is heated to 60-70 DEG C, turned with 600-800/the speed stirring 30-40 minute of part after add paraffin, microwax, with 800- 1000 revs/min of speed stirring and emulsifying 30-40 minute, obtains mixing wax emulsion；
(3) by solid content, the hydroxymethyl-2 dihydroxy-ethylene urea for 42wt% is mixed with Ludox, with 500-600 rev/min of speed Product and remaining residual components that after stirring 10-15 minute, addition step (1) step (2) obtains, continue ultrasonic disperse 15-20 Minute, obtain final product.
The invention has the advantage that formaldehyde, carbamide, hexamethylenetetramine are carried out reaction life by certain technique by the present invention Become performed polymer, then by being compounded with hydroxymethyl-2 dihydroxy-ethylene urea, Ludox, magnesium chloride, can after supersound process To form colloidal sol type composite modifier, wherein si-0-si framing structure plays Stabilization to modifier system, by timber Carry out impregnation process, timber pickling degree of modification can be significantly improved, improve the rate of body weight gain of timber；Composite modifier can be in wood It is scattered in the cell wall microcellular structure of timber well, with Wood chemical composition in subsequent heat drying in material dipping process In cellulose, hemicellulose, lignin etc. there is situ-gel polyreaction, chemical reaction finally makes the sense between them Group can connect formation covalent bond, and covalent bond is very firm, thus the bending strength of modified fast growing wood, Deflection Modulus of Elasticity and Parallel-to-grain compressive strength all improves a lot；Simultaneously composite modifier can also with the main chemical compositions cellulose of timber, half There is etherification reaction in cellulose and lignin, such reaction can reduce hydrophilic hydroxy group in timber, thus significantly reducing wood Material hygroscopicity.
The compositions such as paraffin, microwax are made compound wax emulsion by certain process meanses and are added to modifying agent by the present invention Preparation in, can be uniformly dispersed in modifying agent, the modifying agent good stability made, safety and environmental protection, suitable industrialized production, Fast growing wood is carried out impregnate pressurized treatments, the inside of timber can be penetrated into, reach waterproof, pliable and tough effect so that modification Timber afterwards is not easy to crack, moistureproof, good stability of the dimension, and the furniture made with this timber is durable, good stability, Er Qiefang Water is mould proof, can outdoor use.
Specific embodiment
A kind of compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability, by following weight portion (kilogram) Raw material make: formaldehyde 3, carbamide 2, hexamethylenetetramine 1.5, maleic anhydride 0.02, appropriate acetic acid, appropriate ammonia, go Ion appropriate amount of water, solid content are the hydroxymethyl-2 dihydroxy-ethylene urea 20 of 42wt%, Magnesium dichloride hexahydrate 1.5, Ludox 10, stone Wax 3, microwax 2, fatty alcohol-polyoxyethylene ether 3, polyvinyl alcohol 2.
A kind of described compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability, by step in detail below Make:
(1) formaldehyde, carbamide, hexamethylenetetramine are put in reactor, add maleic anhydride, be heated to completely molten while stirring Solution, adds the deionized water of total amount 1.5 times amount, is heated to 70 DEG C, and stirring reaction adjusts ph value with acetic acid and ammonia after 3 hours and is 7, terminate reaction；
(2) deionized water of 4 times amount will be added in fatty alcohol-polyoxyethylene ether, stirs to after be completely dissolved and add polyvinyl alcohol, It is heated to 60 DEG C, add paraffin, microwax after stirring 30 minutes with the speed of 600 turns/part, breast is stirred with 800 revs/min of speed Change 30 minutes, obtain mixing wax emulsion；
(3) by solid content, the hydroxymethyl-2 dihydroxy-ethylene urea for 42wt% is mixed with Ludox, with 500 revs/min of speed stirring Product and remaining residual components that after 10 minutes, addition step (1) step (2) obtains, continue ultrasonic disperse 15 minutes, obtain final product.
Fast growing wood is processed into the veneer of certain specification, being dried to moisture content is 6-10%, puts into vacuum pressure impregnation In tank, after being evacuated to -0.01mpa, keep 30-40 minute, be then rapidly injected modifying agent of the present invention, continue to keep 40-50 Minute, it is forced into 0.89-0.9 mpa afterwards and keep 15-20 minute；After sheet material is taken out, environment air dry disposed within is extremely aqueous Rate is less than 30%, is then placed in baking oven, first 6-8 hour is dried at 80-90 DEG C, then solidifies 4-5 hour at 120-130 DEG C, cold But discharging after obtains modified fast growing wood.Modified fast growing wood is compared with unmodified timber, Absolute Dry Density Improve 63.3%, bending strength improves 63.8%, parallel-to-grain compressive strength improves 16.9%, and whole water absorption rate reduces 33.7%.

Claims (2)

1. a kind of compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability it is characterised in that by following heavy The raw material of amount part is made: formaldehyde 3-3.5, carbamide 2-3, hexamethylenetetramine 1.5-2, maleic anhydride 0.02-0.03, acetic acid In right amount, appropriate ammonia, appropriate deionized water, solid content be 42wt% hydroxymethyl-2 dihydroxy-ethylene urea 20-23, six hydration chlorine Change magnesium 1.5-2, Ludox 10-11, paraffin 3-4, microwax 2-3, fatty alcohol-polyoxyethylene ether 3-4, polyvinyl alcohol 2-2.5.
2. a kind of compound wax emulsion for fast growing wood strengthens the modifying agent of dimensional stability according to claim 1, its It is characterised by, be made up of step in detail below:
(1) formaldehyde, carbamide, hexamethylenetetramine are put in reactor, add maleic anhydride, be heated to completely molten while stirring Solution, adds the deionized water of total amount 1.5-2 times amount, is heated to 70-80 DEG C, uses acetic acid and ammonia to adjust after stirring reaction 3-4 hour Section ph value is 7, terminates reaction；
(2) deionized water of 4-5 times amount will be added in fatty alcohol-polyoxyethylene ether, stir to after be completely dissolved and add polyethylene Alcohol, is heated to 60-70 DEG C, turned with 600-800/the speed stirring 30-40 minute of part after add paraffin, microwax, with 800- 1000 revs/min of speed stirring and emulsifying 30-40 minute, obtains mixing wax emulsion；
(3) by solid content, the hydroxymethyl-2 dihydroxy-ethylene urea for 42wt% is mixed with Ludox, with 500-600 rev/min of speed Product and remaining residual components that after stirring 10-15 minute, addition step (1) step (2) obtains, continue ultrasonic disperse 15-20 Minute, obtain final product.
CN201610884467.6A 2016-10-11 2016-10-11 Modifying agent used for strengthening dimensional stability of compound wax emulsion of quick-growing wood Withdrawn CN106363731A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107268331A (en) * 2017-07-25 2017-10-20 攀枝花学院 Impregnate paper glue modifying agent and preparation method thereof
CN107415006A (en) * 2017-09-20 2017-12-01 阜南县星光工艺品有限公司 A kind of method for preventing woodwork from ftractureing
CN108058251A (en) * 2018-01-15 2018-05-22 北京林业大学 A kind of compound wax emulsion waterproofing wood agent and its timber of processing and the preparation method of the two
CN108515596A (en) * 2018-03-30 2018-09-11 吕莉 A kind of preparation method of insect prevention timber
CN108638262A (en) * 2018-06-11 2018-10-12 阜南县永兴工艺品有限公司 A method of improving high intensity herba fibraureae recisae material toughness
CN110014490A (en) * 2019-05-14 2019-07-16 赛为木业（石首）有限公司 Wood modifier and preparation method thereof based on high humidity environment
EP4122661A1 (en) * 2021-07-22 2023-01-25 Faber- Castell AG Process for the production of an impregnated wood piece, impregnated wood piece obtainable by such a process and pencil having a sheath made of such an impregnated wood piece

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107268331A (en) * 2017-07-25 2017-10-20 攀枝花学院 Impregnate paper glue modifying agent and preparation method thereof
CN107415006A (en) * 2017-09-20 2017-12-01 阜南县星光工艺品有限公司 A kind of method for preventing woodwork from ftractureing
CN108058251A (en) * 2018-01-15 2018-05-22 北京林业大学 A kind of compound wax emulsion waterproofing wood agent and its timber of processing and the preparation method of the two
CN108058251B (en) * 2018-01-15 2019-11-29 北京林业大学 A kind of preparation method of the timber and the two of compound wax emulsion waterproofing wood agent and its processing
CN108515596A (en) * 2018-03-30 2018-09-11 吕莉 A kind of preparation method of insect prevention timber
CN108515596B (en) * 2018-03-30 2019-11-26 武平龙兴科技有限公司 A kind of preparation method of insect prevention timber
CN108638262A (en) * 2018-06-11 2018-10-12 阜南县永兴工艺品有限公司 A method of improving high intensity herba fibraureae recisae material toughness
CN110014490A (en) * 2019-05-14 2019-07-16 赛为木业（石首）有限公司 Wood modifier and preparation method thereof based on high humidity environment
EP4122661A1 (en) * 2021-07-22 2023-01-25 Faber- Castell AG Process for the production of an impregnated wood piece, impregnated wood piece obtainable by such a process and pencil having a sheath made of such an impregnated wood piece

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