CN107511901A - A kind of Wood protecting agent and its production method - Google Patents
A kind of Wood protecting agent and its production method Download PDFInfo
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- CN107511901A CN107511901A CN201710163924.7A CN201710163924A CN107511901A CN 107511901 A CN107511901 A CN 107511901A CN 201710163924 A CN201710163924 A CN 201710163924A CN 107511901 A CN107511901 A CN 107511901A
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- polyvinyl alcohol
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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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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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
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of Wood protecting agent, and in terms of parts by weight, its raw material includes：50 60 parts of full-fluorine group modified polyvinyl alcohol；15 20 parts of nano silicon；1 1.5 parts of quaternary ammonium salt cationic fluorocarbon surfactant；5 10 parts of ethanol；1 1.5 parts of bactericide；110 120 parts of water；Wherein, the structural formula of the full-fluorine group modified polyvinyl alcohol isX=3 7, y=3 7.The present invention is used to implement protection processing to timber, the performance with excellent water resistance, alcohol resistance, transparency and pencil hardness.
Description
Technical field
The present invention relates to technical field of coatings, and in particular, it is related to a kind of Wood protecting agent and its production method.
Background technology
Timber is one of current industrial or agricultural, national defence, civilian main natural material, has easy to process, natural beauty
Many advantages, such as decorative pattern, gloss and color and be widely used in the occasions such as furniture.But natural timber is due to aqueous, bacterium, wood
Quality etc. makes it slowly to rot to change colour after processing, moisture expansion and drying shrinkage, and then strain cracking, while bacterium and mould erosion cause wood
Material is mouldy, rotten, and the natural beautiful color and luster of timber in the sun can aging, flavescence, blackening rapidly.
China's timber resource shortage, per capita area of woods occupy the 134th, the world less than the 1/4 of world average level.With
The implementation of wildwood protected project and being continuously increased for Wood consumption, imbalance between supply and demand becomes increasingly conspicuous.Timber resource shortage, save
Timber resources, the idea of " protection timber is exactly to conserve forests " are urgently established.In November, 2005, forwarding country of the General Office of the State Council
The departments such as State Development and Reform Commission《On accelerating the notice of propulsion timber conservation and alternative opinion on work》In be distinctly claimed " carry out timber
Protection technique ", " implementing wood protection engineering ", and objectives are proposed to wood preservation etc..
The conventional processing method of timber has high temperature second (third) to be acylated timber；Preservative (such as pentachlorophenol, phenylphenol, ring
Alkyl copper, ketorolac, copper chromium boron, boride) invade bubble；The coating of coal tar, coal creasote.The acylated timber of second (third) has good
Treatment effect, but the acylated timber of second (third) needs high temperature, confined space, and acid anhydrides used and catalyst have larger poison
Property, and industrialization reaction is not exclusively, unreacted acid anhydrides and catalyst recovery difficulty pollutes；Used in preservative immersion
Preservative usually contains severe toxicity, influences reprocessing or do harm to huamn body；The coating of coal creasote, protecting effect is general, molten
Agent volatility is big, and influences the attachment of surface coating layer to a certain extent.
Therefore, we are badly in need of developing a kind of Wood protecting agent for being used to protect timber, it can not only be easy to real to timber
Protection processing is applied, and ensures to have no toxic side effect to human body.
The content of the invention
The purpose of the present invention one is to provide a kind of Wood protecting agent, and it is used to implement protection processing to timber, has excellent
Different water resistance, alcohol resistance, the performance of transparency and pencil hardness.
The present invention above-mentioned purpose technical scheme is that：
A kind of Wood protecting agent, in terms of parts by weight, its raw material includes：
Full-fluorine group modified polyvinyl alcohol 50-60 parts；
Nano silicon 15-20 parts；
Quaternary ammonium salt cationic fluorocarbon surfactant 1-1.5 parts；
Ethanol 5-10 parts；
Bactericide 1-1.5 parts；
Water 110-120 parts；
Wherein, the structural formula of the full-fluorine group modified polyvinyl alcohol is x=3-7, y=3-7.
The present invention is further arranged to：The x=3, y=7.
The present invention is further arranged to：The m:N=3:1.
The present invention is further arranged to：The degree of polymerization of the full-fluorine group modified polyvinyl alcohol is 750-900.
The present invention is further arranged to：The bactericide is sodium monofluorophosphate.
The present invention is further arranged to：The water is deionized water.
The purpose of the present invention two is the production method for providing Wood protecting agent described above, comprises the following steps：
Step A：The synthesis of the full-fluorine group modified polyvinyl alcohol
In terms of parts by weight, under conditions of nitrogen protection, 100 parts of polyvinyl alcohol add 150 parts of dimethyl formamide solutions, swash
200 DEG C are heated under strong stirring, after polyvinyl alcohol is completely dissolved, 90 DEG C is cooled to, after adding 10 parts of pyridines, is slowly added to 45
The CF of part3(CF2)xCOCl and CF3(CF2)yCOCl, react 5 hours, product is by acetone precipitation and cleans for several times, dries；Step B：
The preparation of the Wood protecting agent
By formula ratio, full-fluorine group modified polyvinyl alcohol and water are mixed, 95 DEG C is warming up to, is completely dissolved it, be cooled to 50
DEG C quaternary ammonium salt cationic fluorocarbon surfactant, bactericide are added, ethanol and nanometer titanium dioxide are sequentially added when being cooled to room temperature
Silicon.
The present invention is further arranged to：First add CF in step A3(CF2)xCOCl, add CF afterwards3(CF2)yCOCl。
In summary, the invention has the advantages that：
1st, polyvinyl alcohol is denatured using the mixture of perfluorooctane chloride and perfluor butyl chloride, it is poly- obtains full-fluorine group denaturation
Vinyl alcohol, the present invention add full-fluorine group modified polyvinyl alcohol after so that the present invention have excellent water resistance, alcohol resistance, thoroughly
Lightness and pencil hardness.
2nd, on surface of the Wood protecting agent of the present invention coated in material (base material), coating can rapidly permeate into and be attached to material
In the aperture and invisible pore of (about 6 millimeters), physics and chemistry are nearby formed with the molecule of material in itself for top layer
Key so that coating is very firm.Because coating has superpower repulsive interaction to hydrone and oil molecule, water or oil will not adhere to
The surface of material is penetrated into internal.And it is startling, coating can keep the original respiration capability of base material, can't
Steam is prevented to be come out from the inside of material so that material is maintained permanent drying, can protect timber to greatest extent.
3rd, the chemical property of Wood protecting agent of the present invention in itself is highly stable (acid and alkali-resistance and resistance to natural light irradiation), plus painting
Coating can be penetrated into material surface after applying, the influence for the environmental change being not easily susceptible to outside top layer.
4th, the coating itself after Wood protecting agent coating of the present invention is almost colourless, therefore does not interfere with the color and luster of material, from
Right texture and outward appearance, fully demonstrate the aesthetic feeling of material natural harmony itself.
Brief description of the drawings
The infrared spectrogram of full-fluorine group modified polyvinyl alcohol and polyvinyl alcohol in Fig. 1 embodiments one.
Embodiment
The present invention is described in further detail with reference to embodiments.
In the embodiment of the present invention in addition to full-fluorine group modified polyvinyl alcohol, involved material is commercially available.
Embodiment one：Wood protecting agent, its raw material include：
Full-fluorine group modified polyvinyl alcohol 50Kg；
Nano silicon 20Kg；
Quaternary ammonium salt cationic fluorocarbon surfactant 1Kg；
Ethanol 8Kg；
Sodium monofluorophosphate 1.5Kg；
Deionized water 120Kg；
Wherein, x=3, y=7, m in full-fluorine group modified polyvinyl alcohol:N=3:1.
The production method of Wood protecting agent is as follows：
Step A：The synthesis of full-fluorine group modified polyvinyl alcohol
In terms of parts by weight, under conditions of nitrogen protection, the polyvinyl alcohol addition dimethylformamide that the degree of polymerization is 800 is molten
Liquid, be heated to 200 DEG C under high degree of agitation, after polyvinyl alcohol is completely dissolved, be cooled to 90 DEG C, after adding pyridine, first slowly plus
CF3(CF2)3COCl, it is rear slowly to add CF3(CF2)7COCl, react 5 hours, product is by acetone precipitation and cleans for several times, dries；Step
Rapid B：The preparation of the Wood protecting agent
Full-fluorine group modified polyvinyl alcohol and water are mixed, 95 DEG C is warming up to, is completely dissolved it, is cooled to 50 DEG C of addition quaternary ammoniums
Salt cation fluorocarbon surfactant, bactericide, ethanol and nano silicon are sequentially added when being cooled to room temperature.
The upper infrared absorption curve for full-fluorine group modified polyvinyl alcohol in Fig. 1, it is lower bent for the infrared absorption of polyvinyl alcohol
Line.It will be seen from figure 1 that 1781cm-1d carbonyl absorption peak in the infrared absorption curve of full-fluorine group modified polyvinyl alcohol
Appearance illustrates CF3(CF2)3CO and CF3(CF2)7COCl groups have been connected on the main chain of polyvinyl alcohol molecule.
Embodiment two：Wood protecting agent, its raw material include：
Full-fluorine group modified polyvinyl alcohol 55Kg；
Nano silicon 15Kg；
Quaternary ammonium salt cationic fluorocarbon surfactant 1.2Kg；
Ethanol 10Kg；
Sodium monofluorophosphate 1Kg；
Deionized water 110Kg；
Wherein, x=3, y=7, m in full-fluorine group modified polyvinyl alcohol:N=3:1.
The production method of Wood protecting agent is as follows：
Step A：The synthesis of full-fluorine group modified polyvinyl alcohol
In terms of parts by weight, under conditions of nitrogen protection, the polyvinyl alcohol addition dimethylformamide that the degree of polymerization is 750 is molten
Liquid, be heated to 200 DEG C under high degree of agitation, after polyvinyl alcohol is completely dissolved, be cooled to 90 DEG C, after adding pyridine, first slowly plus
CF3(CF2)3COCl, it is rear slowly to add CF3(CF2)7COCl, react 5 hours, product is by acetone precipitation and cleans for several times, dries；Step
Rapid B：The preparation of the Wood protecting agent
Full-fluorine group modified polyvinyl alcohol and water are mixed, 95 DEG C is warming up to, is completely dissolved it, is cooled to 50 DEG C of addition quaternary ammoniums
Salt cation fluorocarbon surfactant, bactericide, ethanol and nano silicon are sequentially added when being cooled to room temperature.
Embodiment three：Wood protecting agent, its raw material include：
Full-fluorine group modified polyvinyl alcohol 60Kg；
Nano silicon 18Kg；
Quaternary ammonium salt cationic fluorocarbon surfactant 1.5Kg；
Ethanol 5Kg；
Sodium monofluorophosphate 1.3Kg；
Deionized water 115Kg；
Wherein, x=3, y=7, m in full-fluorine group modified polyvinyl alcohol:N=3:1.
The production method of Wood protecting agent is as follows：
Step A：The synthesis of full-fluorine group modified polyvinyl alcohol
In terms of parts by weight, under conditions of nitrogen protection, the polyvinyl alcohol addition dimethylformamide that the degree of polymerization is 900 is molten
Liquid, be heated to 200 DEG C under high degree of agitation, after polyvinyl alcohol is completely dissolved, be cooled to 90 DEG C, after adding pyridine, first slowly plus
CF3(CF2)3COCl, it is rear slowly to add CF3(CF2)7COCl, react 5 hours, product is by acetone precipitation and cleans for several times, dries；Step
Rapid B：The preparation of the Wood protecting agent
Full-fluorine group modified polyvinyl alcohol and water are mixed, 95 DEG C is warming up to, is completely dissolved it, is cooled to 50 DEG C of addition quaternary ammoniums
Salt cation fluorocarbon surfactant, bactericide, ethanol and nano silicon are sequentially added when being cooled to room temperature.
Example IV：The difference of example IV and embodiment one is, CF is added simultaneously in step A3(CF2)3COCl and
CF3(CF2)7COCl mixture.
Embodiment five：The difference of embodiment five and embodiment one is, CF is first added in step A3(CF2)7COCl, add CF afterwards3
(CF2)3COCl。
Embodiment six：The difference of embodiment six and embodiment one is, x=3, y=in full-fluorine group modified polyvinyl alcohol
3；That is, CF is only added in step3(CF2)3COCl。
Embodiment seven：The difference of embodiment seven and embodiment one is, x=7, y=in full-fluorine group modified polyvinyl alcohol
7；That is, CF is only added in step3(CF2)7COCl。
Embodiment eight：The difference of embodiment eight and embodiment one is, x=3, y=in full-fluorine group modified polyvinyl alcohol
7, m:N=2:1.
Embodiment nine：The difference of embodiment nine and embodiment one is, x=3, y=in full-fluorine group modified polyvinyl alcohol
7, m:N=1:1.
Embodiment ten：The difference of embodiment ten and embodiment one is, x=3, y=in full-fluorine group modified polyvinyl alcohol
7, m:N=1:3.
Performance test is carried out for the Wood protecting agent of embodiment one to ten, method of testing is as follows：
First, water resistance
Panel is prepared by brushing three coatings on each type of timber with 80-90g/m2.After first coating, by face
Plate stands four hours under room temperature (RT), then with sand paper frosted.After the 3rd coating, panel is set to dry at ambient temperature
4 hours, then dried 48 hours at 50 DEG C in an oven, then carry out water resistance test.Filtered with test water saturation collar plate shape
Paper, place it on finished panel and close the lid to reduce evaporation.After 24 hours, lid is removed.Wiped with wet facial tissue
Test zone, it is dried at room temperature for it, so as to observe destructiveness.Rating scale about scale I-V is listed below, wherein
I is worst, and V is optimal.
I：It is strong to change.Surface texture substantially changes and/or discoloration, glossiness and color change, and/or surfacing is complete
Fully or partially it is removed, and/or filter paper adheres to surface.
II：Significantly change.Test zone can substantially be distinguished with adjacent peripheral region, all direction of observations it is seen, for example,
Discoloration, glossiness and color change, and/or surface texture slightly change, such as swelling, fiber lifting, cracking, foaming.
III：Moderate changes.Test zone can be distinguished with adjacent peripheral region, some direction of observations it is seen, for example, discoloration,
Glossiness and color change, surface texture is without change, such as swelling, fiber lifting, cracking, foaming.
IV：It is slight to change.Only when light source is in reflection on test surfaces and the eye reflections towards observer, test section
Domain can just be distinguished with adjacent peripheral region, such as discoloration, glossiness and color change, and surface texture is without change, such as swelling, fibre
Dimension lifting.
V：Without change.Test zone and adjacent peripheral region undistinguishable.
2nd, alcohol resistance
By on each type of timber with 80-90g/m2Brush three coatings and prepare panel.After first coating, make face
Plate stands four hours at room temperature, then with sand paper frosted.After the 3rd coating, panel is set to dry 4 at ambient temperature small
When, then dried 48 hours at 50 DEG C in an oven, then carry out water resistance test.With test with 48% alcohol saturation filter disc,
Place it on finished panel and close the lid to reduce evaporation.After 1 hour, lid is removed.With wet facial tissue rubbing test
Region, it is dried at room temperature for it, so as to observe destructiveness.Rating scale about scale I-V is listed below, and wherein I is
Worst, and V is optimal.
I：It is strong to change.Surface texture substantially changes and/or discoloration, glossiness and color change, and/or surfacing is complete
Fully or partially it is removed, and/or filter paper adheres to surface.
II：Significantly change.Test zone can substantially be distinguished with adjacent peripheral region, all direction of observations it is seen, for example,
Discoloration, glossiness and color change, and/or surface texture slightly change, such as swelling, fiber lifting, cracking, foaming.
III：Moderate changes.Test zone can be distinguished with adjacent peripheral region, some direction of observations it is seen, for example, discoloration,
Glossiness and color change, surface texture is without change, such as swelling, fiber lifting, cracking, foaming.
IV：It is slight to change.Only when light source is in reflection on test surfaces and the eye reflections towards observer, test section
Domain can just be distinguished with adjacent peripheral region, such as discoloration, glossiness and color change, and surface texture is without change, such as swelling, fibre
Dimension lifting.
V：Without change.Test zone and adjacent peripheral region undistinguishable.
3rd, transparency
Applied with the dual nephelometers of Byk haze-gard (available from Bi Ke-Gardner company BYK-Gardner GmbH) to assess
Expect the transparency of film.Paint film is prepared on a glass by the wet film of 120 μ m-thicks with blade coating medicine applying apparatus and is dried at 50 DEG C
Case solidifies 48 hours.The dual nephelometer counter plates of Byk haze-gard are tested and provide two parameters：Transmissivity and turbid
Degree.The transparency of paint film is calculated based on below equation：Transparency=transmissivity * (1- turbidity).Transparency less than 20 is
It is unacceptable.
4th, pencil hardness
ASTM D3363-05 (2011) the e2 standard method of test on film hardness tested using pencil.With blade coating medicine applying apparatus
Paint film is prepared on a glass by the wet film of 120 μ m-thicks and is solidified 48 hours in 50 DEG C of baking ovens.With one group of Mitsubishi
(Mitsubishi) calibrated Wood pencil tests pencil hardness on glass panels.The calibrated Wood pencil of this group of Mitsubishi meets
Following hardness scale(degree)：6H, 5H, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B, 6B, wherein 6H are most hard, and 6B is most
Soft.About 5 are carefully removed to 6mm timber from the tip of Wood pencil using draftsman's types of mechanical pencil sharpener, leave original state
, unmarked, smooth graphite core cylinder.Pencil and the angle that sand paper is in 90 degree are kept, abuts against Sandpapering graphite
Core, 90 degree of accurate angle is maintained, untill obtaining flat, smooth and circular cross-section.The edge in the section is without wood chip
Or indentation.Coated panel is placed on horizontal firm horizontal surface.The glass-hard Mitsubishi's pencil of apparatus starts
Test, and continue downwards along hardness scale(degree), untill pencil can not be cut or dig into paint film.The pencil passes through
Machinery mount is firmly held relative to paint film in 45 degree of angles (back to operator) and pusheding away from operator.It is recommended that draw back and forth
The length of line is 6.5mm.Can not cut or dig into paint film in the pencil hardness of paint film is recorded as most hard pencil.
The performance test results of the Wood protecting agent of embodiment one to ten see the table below.
The performance test results of the Wood protecting agent of the embodiment one to ten of table one
| Test event | Water resistance | Alcohol resistance | Transparency | Pencil hardness |
| Embodiment one | V | IV | 45 | 3H |
| Embodiment two | V | IV | 47 | 3H |
| Embodiment three | V | IV | 47 | 3H |
| Example IV | III | III | 33 | H |
| Embodiment five | II | II | 25 | 2B |
| Embodiment six | II | II | 35 | B |
| Embodiment seven | II | II | 27 | B |
| Embodiment eight | III | III | 25 | F |
| Embodiment nine | II | II | 20 | HB |
| Embodiment ten | II | II | 19 | HB |
By the experimental data in analytical table one, embodiment one to three has excellent water resistance, alcohol resistance, transparency and lead
Hardness, i.e. embodiment one to three is optimum embodiment.
By the experimental data of comparative example one, four and five, CF in step A3(CF2)3COCl and CF3(CF2)7COCl addition sequence has a significant impact to the performance of Wood protecting agent of the present invention, and first adds CF3(CF2)3Add CF after COCl3
(CF2)7COCl is better than adding CF simultaneously3(CF2)3COCl and CF3(CF2)7COCl is better than first adding CF3(CF2)7Add CF after COCl3(CF2)3COCl。
By the experimental data of comparative example one, six and seven, using pure perfluorooctane chloride or pure perfluor is used
The effect that butyl chloride is denatured to polyvinyl alcohol, all it is not so good as using the mixture of perfluorooctane chloride and perfluor butyl chloride to poly- second
The effect that enol is denatured.
By the experimental data of comparative example one, eight, nine and ten, when using perfluorooctane chloride and perfluor butyl chloride
Mixture when being denatured to polyvinyl alcohol, both ratios also have an impact to the degenerative effects of polyvinyl alcohol.And perfluor fourth
The mol ratio of acyl chlorides and perfluorooctane chloride is 3:When 1, obtained Wood protecting agent has excellent properties.
It is due to the surface that Wood protecting agent of the present invention is coated in material (base material) that the present invention, which has every excellent performance,
On, coating can rapidly permeate into and be attached to material surface nearby in the aperture and invisible pore of (about 6 millimeters), with
The molecule of material forms the key of physics and chemistry in itself so that coating is very firm.Because coating has to hydrone and oil molecule
Superpower repulsive interaction, water or oil will not attachment material surface or penetrate into internal.And it is startling, coating can be with
The original respiration capability of base material is kept, steam can't be prevented to be come out from the inside of material so that material is maintained growing
Dry long, timber can be protected to greatest extent.
Chemical property again due to coating in itself is highly stable (acid and alkali-resistance and resistance to natural light irradiation), plus coating after coating
It can penetrate into material surface, the influence for the environmental change being not easily susceptible to outside top layer.
Further, since coating itself is almost colourless, therefore does not interfere with the color and luster of material, natural texture and outward appearance, fully
Embody the aesthetic feeling of material natural harmony itself.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (8)
1. a kind of Wood protecting agent, it is characterised in that in terms of parts by weight, its raw material includes：
Full-fluorine group modified polyvinyl alcohol 50-60 parts；
Nano silicon 15-20 parts；
Quaternary ammonium salt cationic fluorocarbon surfactant 1-1.5 parts；
Ethanol 5-10 parts；
Bactericide 1-1.5 parts；
Water 110-120 parts；
Wherein, the structural formula of the full-fluorine group modified polyvinyl alcohol is
X=3-7, y=3-7.
2. Wood protecting agent according to claim 1, it is characterised in that the x=3, y=7.
3. Wood protecting agent according to claim 2, it is characterised in that the m:N=3:1.
4. Wood protecting agent according to claim 3, it is characterised in that the polymerization of the full-fluorine group modified polyvinyl alcohol
Spend for 750-900.
5. Wood protecting agent according to claim 1, it is characterised in that the bactericide is sodium monofluorophosphate.
6. Wood protecting agent according to claim 1, it is characterised in that the water is deionized water.
A kind of 7. production method of Wood protecting agent as described in any one in claim 1 to 6, it is characterised in that including
Following steps：
Step A：The synthesis of the full-fluorine group modified polyvinyl alcohol
In terms of parts by weight, under conditions of nitrogen protection, 100 parts of polyvinyl alcohol add 150 parts of dimethyl formamide solutions, swash
200 DEG C are heated under strong stirring, after polyvinyl alcohol is completely dissolved, 90 DEG C is cooled to, after adding 10 parts of pyridines, is slowly added to 45
The CF of part3(CF2)xCOCl and CF3(CF2)yCOCl, react 5 hours, product is by acetone precipitation and cleans for several times, dries；Step B：
The preparation of the Wood protecting agent
By formula ratio, full-fluorine group modified polyvinyl alcohol and water are mixed, 95 DEG C is warming up to, is completely dissolved it, be cooled to 50
DEG C quaternary ammonium salt cationic fluorocarbon surfactant, bactericide are added, ethanol and nanometer titanium dioxide are sequentially added when being cooled to room temperature
Silicon.
8. the production method of Wood protecting agent according to claim 7, it is characterised in that first add CF in step A3(CF2)xCOCl, add CF afterwards3(CF2)yCOCl。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109168A (en) * | 2019-06-21 | 2020-12-22 | 南通飞云工艺家具有限公司 | Preparation method of fireproof flame-retardant wood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109168A (en) * | 2019-06-21 | 2020-12-22 | 南通飞云工艺家具有限公司 | Preparation method of fireproof flame-retardant wood |
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| Publication number | Publication date |
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| CN107511901B (en) | 2019-08-06 |
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