CN1045561C - Imitation red-wood and its making method - Google Patents
Imitation red-wood and its making method Download PDFInfo
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- CN1045561C CN1045561C CN93104336A CN93104336A CN1045561C CN 1045561 C CN1045561 C CN 1045561C CN 93104336 A CN93104336 A CN 93104336A CN 93104336 A CN93104336 A CN 93104336A CN 1045561 C CN1045561 C CN 1045561C
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Abstract
The present invention relates to novel red wood which carries out reification processing and a manufacture method thereof, wherein the outer surface of the novel red wood is similar to that of red wood. The novel red wood of the present invention is wood which comprises 10% to 40% of synthetic resin of which the fibre structure is not broken, and the synthetic resin is in the inner part and on the surface layer of wood fibers. Besides the steps of chemical immersion, resin synthesis, solidification, etc., the manufacture method of the novel red wood also comprises tree species selection, wood pre-compression and toning treatment. The novel red wood of the present invention has the advantages of high toughness and beautiful appearance, and the novel red wood is similar to or better than natural red wood and is used for manufacturing furniture, fine artware and various construction decorative articles.
Description
The present invention relates to the modification of timber, particularly relate to a kind of imitation red-wood and machining manufacture thereof through physics and the similar redwood of chemically treated appearance
In recent years, a series of timber that make with machinery and chemical method processing have been developed, for example after timber being broken into wood powder, mix with some adhesive, the sheet material that makes by the mechanical compaction method again, these treated timber have favorable mechanical performance and surface property usually.In the specification of invention title for the Chinese patent application (patent No. is 88104938) of " technology of moulded products of plasticized fibre ", the inventor is by being broken into wood powder with original timber, again wood powder and liquid thermosetting resin such as phenolic resins and other additives such as Lauxite and pigment are mixed, through mediating, after dehydration and the drying, it at high temperature is placed on press forming in the mould, make described resin be subjected to heat cure and make the plastic fibre goods, the original timber wide range that this technology is used, even can comprise a large amount of side cut material or low-grade wood such as masson pine in the wood working industry, it can also be branch good-for-nothing in the production of forestry, useless leftover bits and pieces such as tree root, so adopt this method fully to excavate timber resources, turn waste into wealth.And this technology press forming in mould, adopting about bigger unit pressure 140-400 kg/cm, press temperature generally is 150 °-175 ℃, general every thick one millimeter needs 2 minutes that require of press time.Prepared plastic fibre goods are specious, and fineness is good, and weather resistance is strong, cold-resistant hot temperature especially can improve tension and shock resistance, can solve the fragility problem of pressing satisfiedly, but it need be crushed to the certain particle size size to timber, needs heavy machining.And for example (5146) only relates to synthetic phenolic resins and comes impregnated timber in " timber scieintific and technical dictionary " P226-228 Science Press, so that improve timber corrosion resistant, moisture-proof, performance such as acidproof, but because synthetic resin viscosity is big, the general defective that all exists the accessibility difference, so this class prior art also has been subjected to limitation US3 to the modification of timber, 597,262 also only relate to another kind of synthetic resin handles problems to impregnation of timber, mainly is to improve the surface property of impregnated timber and the variation that prevents to flood composition.But they are all not impregnated stock, are placed on the solidified forming process by heating and pressurizeing in the mould again.That is to say, so far never have a kind of without fragmentation directly by log or by log after simply cutting, cut, saw machining such as sanction again through chemical treatment the mixed liquor of timber pickling at monomer in, this monomer mixed solution is at the inner synthetic resin of timber, thereby reaches the method to Wooden modifying.
The inventor's Chinese patent 88102532.1 provides the fibre structure of a kind of basic maintenance timber own constant, and comprises the improved wood-amber wood and the manufacture method thereof of a part of resin, and this method is carried out modification to finish to timber at the inner synthetic resin of timber.By the made goods of the amber wood of this invention gadget intensity height that enbrittles, outer appearnce like or be better than agate, the superior function of color jade or natural amber.
Purpose that this invention will reach and effect are finished by following design:
This is invented described amber wood and refers to outward appearance and natural agate or the extremely similar a kind of improved wood of natural amber, and it comes down to a kind of improved wood that is impregnated with the fibre structure of synthetic resin without fragmentation.Here, " fibre structure is without fragmentation " is for " fragmentation " described in the top Chinese patent application of having mentioned 86104938, also promptly in the manufacture process of this invention amber wood, timber is without fragmentation, but directly cuts through shearing saw that the sanction machining process processes by the original timber cutting down under or by log.Above-mentioned synthetic resin can be selected from phenolic resins, Lauxite etc., and its content is 10%-40% (dry weight percentage is benchmark with the summation of timber dry weight), preferred 20%-30% (dry weight).Except that resin, also can comprise a small amount of additive in this invention amber wood, as 0.01%-0.5% (weight) pigment or releasing agent etc.
This invention amber wood is made by the following step: the preparation of I stock
The raw material of described amber wood can adopt various woodwork materials commonly used, also can adopt the timber of various poor qualities, as the masson pine the widest, that quantity is maximum that in China's Pinus, distributes, can also select good-for-nothing production of forestry leftover bits and pieces (small wood or waste wood such as branch, tree root for use.By these log scales being removed the peel, dash, shear, sawed machining such as sanction and oven dry is handled, can make it become required size.The II chemical impregnation
Above-mentioned stock is put into the steeper that can carry out vacuum decompression, extract air in the container earlier out,, thereby be convenient to the carrying out of chemical impregnation so that residual air is easy to overflow between stock top layer dirt bits and the fiber.Then, stock is immersed in the maceration extract for preparing in advance, so that chemical soaker fully infiltrates in the stock fiber.Described maceration extract is divided into the mixed liquor of auxiliary chemical raw materials such as phenol, air aldehyde resin synthesis material and catalyst, pigment.For the dark color that changes the phenolic goods, dull color such as brown with further reduce cost of material, replacement such as available urea, aldehyde or part replace phenol, aldehyde, and can increase chemical reagent such as a small amount of thiocarbamide or melamine and strengthen and modification.Dip time changes according to the factors such as thickness, density and desired resin content of stock, generally should make chemical soaker fully infiltrate the stock fibrous inside.Synthesizing of III resin
After dipping is finished, remove vacuum, heating under normal pressure makes chemical raw mix reaction in the container, and reaction temperature is about 95 ℃～105 ℃, and the reaction time of time and conventional liquid phenolic resin or Lauxite is close.During reaction, the degree that the resin of should controlling well is synthetic makes it remain on little viscosity, so that make resin further infiltrate the stock fibrous inside.IV is dry to be handled
After above-mentioned reaction finishes, stop immediately heating, carry out the water proof cooling, emit subsequently unnecessary resin liquid (this resin can be used for making application for a patent for invention number be 86104938 described plastic fibres or as dipping decorative cover veneer sheet stock).Stock in the container is taken out, is placed on device such as ventilation airing frame and goes up through air-dry, use again special-purpose drying equipment to its drying with standby.
The V solidified forming
Dried stock put into that mould adds hot pressing and with it in mould pressure heat-preserving a period of time, so just make the resin in the stock be cured reaction and obtain the amber wood goods.
The present invention seeks to further improvement, so that a kind of similar redwood, the imitation red-wood that surpasses redwood and manufacture method thereof to be provided to above-mentioned patent " amber wood and manufacture method thereof ".
Above-mentioned purpose of the present invention realizes in the following manner:
A kind of manufacture method of imitation red-wood, it comprises stock preparation, and stock through after the chemical treatment in mould through the HTHP solidified forming, it is characterized in that it also comprises:
(ⅰ) select paulownia and/or rubber timber as stock, and with this stock process precommpression, with precommpression slab thickness compression 1/3;
(ⅱ) under the negative pressure that 0.5～0.6 anaerobism is pressed, precompressed timber stock is immersed in resin (chemistry) mixed liquor,
(ⅲ) to the heating of above-mentioned mixed liquor, heating-up temperature is 95-105 ℃, and described resin mixture liquor can be and comprises phenol, aldehyde and mixture of catalysts or contain urea element, formaldehyde and mixture of catalysts, and the processing of mixing colours of orchil famille rose and/or amaranth,
(ⅳ) above-mentioned impregnated stock is placed in the mould, under the resin solidification temperature, cure under pressure is shaped.
It is characterized in that described phenol and aldehyde are phenol and formaldehyde (or furfural), phenol: formaldehyde (furfural)=1: 1.25-1.3 (gram-molecular weight) or phenol: formaldehyde (or furfural)=1: 0.8-1.0 (gram-molecular weight).
It is characterized in that phenol: formaldehyde (or furfural)=1: 1.25-1.3 (gram-molecular weight), catalyst is selected from base catalysts such as sodium oxide molybdena, potassium hydroxide, sodium carbonate, ammoniacal liquor.
It is characterized in that phenol: formaldehyde (or furfural)=1: 0.8-1.0 restrains (gram-molecular weight), and catalyst is selected from acidic catalysts such as hydrochloric acid, sulfuric acid, phosphoric acid, acetate, oxalic acid.
It is characterized in that described phenol part is replaced by xylenol or diethylstilbestrol.
It is characterized in that also comprising thiocarbamide or melamine in the mixed liquor of described urea element, formaldehyde and catalyst.
It is characterized in that described urea element: thiocarbamide: formaldehyde=0.8: 0.2: 1.6 (gram-molecular weight), corresponding catalyst is by choosing in the base catalysts such as NaOH, potassium hydroxide, ammonium hydroxide, sodium carbonate, ammoniacal liquor.
It is characterized in that described urea element: melamine: formaldehyde=0.8: 0.097: 1.6 (gram-molecular weight), catalyst is selected base catalyst as claimed in claim 7 for use.
It is characterized in that described imitation red-wood comprises (ⅰ) 10%-40% (dry weight) synthetic resin, described synthetic resin can be selected from phenolic resins and Lauxite,
(ⅱ) 90%-60% (dry weight) fibre structure is without the timber of fragmentation, and wherein synthetic resin is comprised in lumber fibre inside and top layer.
It is characterized in that described synthetic resin content range is 20%-30% (dry weight), corresponding timber content range is 80%-70% (dry weight).
Imitation red-wood of the present invention and amber wood have similarly outstanding advantage and effect, at first, do not need fragmentation as the raw-material log of the present invention, this has just reduced this procedure of fragmentation in the conventional method, in addition, just because of do not pass through fragmentation yet, the fibre structure that imitation red-wood of the present invention has kept timber itself to have, thus have very high intensity and toughness.
Screen particular wood material seeds such as the paulownia or the rubber trees of adopting after precommpression through strictness as raw material of the present invention simultaneously.
In the manufacturing of imitation red-wood of the present invention, the condition of resin synthetic chemistry reaction is with generally the synthetic resin response situation is different, after promptly chemical raw material prepares, utilizes vacuum decompression and it is inhaled in the ready-made stock fiber.Processing step constructed in accordance, chemical substances such as described raw material such as phenol, aldehyde and catalyst make it infiltrate in the stock fiber under negative pressure after mixing, and it is synthetic then its heating to be finished resin in fiber.The benefit of doing like this is: because the ratio of viscosities resin of mixtures such as phenol, aldehyde and catalyst is much smaller, make its permeability in stock big, the infiltration performance is good, it can also be in conjunction with the intrinsic native compound of stock wood-fibred itself (as lignin, natural resin) simultaneously, to the natural resin modification, thereby make the physical property of gained imitation red-wood more good.
Below in conjunction with the embodiment of the invention it is further set forth.
The imitation red-wood of present embodiment is following composition: 1 15% (dry weight) phenolic resins or the Lauxite of filling a prescription
85% (dry weight) fibre structure is without the paulownia timber of fragmentation 2 25% (dry weight) phenolic resins or the Lauxites of filling a prescription
75% (dry weight) fibre structure is without the rubber tree timber of fragmentation 3 35% (dry weight) phenolic resins or the Lauxites of filling a prescription
65% (dry weight) fibre structure is without the paulownia timber of fragmentation 4 30% (dry weight) phenolic resins or the Lauxites of filling a prescription
70% (dry weight) fibre structure is without the rubber tree timber of fragmentation
At least 0.1% (weight) dyestuff is selected from amaranth and/or famille rose and releasing agent
The preferred range of above-mentioned resin content is 20%-30% (dry weight), the corresponding preferred 80%-70% of timber content (dry weight), the best when wherein resin content is about 30% (dry weight).Described synthetic resin is in the top layer of timber and the inside of fiber.
The manufacturing of the described imitation red-wood of present embodiment is finished by the following step:
The preparation of (I) stock
The raw material of present embodiment imitation red-wood adopts paulownia and/or rubber tree, it is removed the peel, dashes, shears, saws machinings such as sanction, makes it become certain thickness plate embryo, then it is dried processing.And with its process precommpression at least 1/3.
(II) chemical impregnation
Above-mentioned plate embryo is put into the steeper that can carry out vacuum decompression, extract in the container air out, air is overflowed to about 0.5 atmospheric pressure.The plate embryo is immersed in the maceration extract for preparing in advance, make it suck chemical soaker.
The maceration extract that present embodiment adopted can be following several:
1. phenol, formaldehyde (or furfural) and mixture of catalysts, its composition is:
(A) phenol: formaldehyde (or furfural)=1: 1.25～1.3 (gram-molecular weights)
Catalyst is by choosing in the base catalysts such as NaOH, potassium hydroxide, sodium carbonate, ammoniacal liquor, and the catalyst input amount is about 0.8 gram molecule catalyst/gram molecule phenol.
(B) phenol: formaldehyde (or furfural)=1: 0.8～1.0 (gram-molecular weights)
Catalyst is by hydrochloric acid, sulfuric acid.Choose in the acidic catalysts such as phosphoric acid, acetate or oxalic acid, input amount is generally about 0.6 gram molecule catalyst/gram molecule phenol.
Above-mentioned phenol can part replace with xylenol or diethylstilbestrol.
2. urea element, thiocarbamide, formaldehyde and mixture of catalysts, its composition is the urea element: thiocarbamide: formaldehyde=0.8: 0.2: 1.6 (gram-molecular weight)
Catalyst is by choosing in the base catalysts such as NaOH, potassium hydroxide, ammonium hydroxide, sodium carbonate, ammoniacal liquor, and the input amount of base catalyst is about 0.8 gram molecule catalyst/gram molecule urea element.Certainly, when the urea cellulose content increases to certain proportion, the above-mentioned acidic catalyst of also optional usefulness.
3. the mixture of urea element, melamine and formaldehyde and catalyst, its composition is the urea element: melamine: formaldehyde=0.8: 0.097: 1.6 (gram-molecular weight) catalyst is by choosing the preferably about 0.8 gram molecule catalyst of the input amount of base catalyst/gram molecule urea element in the base catalysts such as NaOH, potassium hydroxide, ammonium hydroxide, sodium carbonate, sodium acid carbonate or ammoniacal liquor.Certainly, when the urea cellulose content is increased to when a certain amount of, also optionally use above-mentioned acidic catalyst.
The factors such as thickness, density and desirable resin content of above-mentioned chemical impregnation time according to stock changes, and generally in 6～26 hours scopes, the way of experience is to avale with the plate embryo in maceration extract to be as the criterion.Synthesizing of III resin
After dipping is finished, remove straight reciprocal of duty cycle, heating under normal pressure makes above-mentioned chemical reaction and form resin, various resins synthetic as follows: 1. phenol-methyl alcohol (or furfural) resin synthesizes
In above-mentioned steeper, mixture to described phenol, methyl alcohol (or alditol) etc. is heated, when reaction vessel internal reaction thing temperature reaches 60～70 ℃ of left and right sides, stop to heat, because the interior chemical reaction of reaction vessel this moment will begin, exothermic reaction will make temperature of charge rise to about 95～98 ℃, keep this temperature, carry out the about 40-55 of back flow reaction minute.2. urea-thiourea-formaldehyde resin is synthetic
In above-mentioned steeper, the mixture in the step II (2) is heated to about 100-105 ℃, reactant is refluxed heated about 2 hours.3. urea element-melamine formaldehyde resin is synthetic
Process that this resin is synthetic and urea-thiourea-formaldehyde resin are synthetic similar substantially.
IV. the dry processing
After above-mentioned synthetic reaction is finished, stop to heat, unnecessary resin liquid is emitted in the water proof cooling subsequently.Take out in will plate embryo friend steeper (reaction vessel), and it is put in device such as ventilation airing frame go up air-dry, and then with in special-purpose drying equipment such as drying machine or the drying room it being carried out drying with standby.The V solidified forming
Dried plate embryo is put into the mould that is preheating to set point of temperature to be suppressed, press temperature should be chosen near the resin solidification temperature, as for phenol-formaldehyde resin then mold temperature (press temperature) should be advisable at about 155 ℃～about 175 ℃, as be urea-thiocarbamide (or melamine)-formaldehyde resin, then press temperature is to be advisable in about 125 ℃～135 ℃ scopes.The pressure heat-preserving time (being the press time) is as the criterion with product thickness, generally is advisable in about two minutes with every millimeter insulation.In mould, take out described plate embryo at last, promptly obtain imitation red-wood goods of the present invention through pressure heat-preserving.
Imitation red-wood of the present invention can be used for making various top-grade furnitures, artistic handicraft using, and miscellaneous hardware and sanitary equipment also are suitable as various senior building ornament materials simultaneously.Imitation red-wood goods of the present invention are not transparence, and the surface has regular natural wood veins, and its outward appearance is extremely similar to natural redwood.It is high temperature resistant, and is indeformable, is difficult for wearing out, and need not japanning, and uses light height more more, and using this imitation red-wood has great potential.
Claims (13)
1. the manufacture method of an imitation red-wood, comprise stock preparation and stock through after the chemical treatment in mould through the HTHP solidified forming, it is characterized in that described method comprises:
(ⅰ) select paulownia and/or rubber timber as stock, and with this stock process precommpression, with precommpression utmost point base thickness compression 1/3;
(ⅱ) under 0.5～0.6 atmospheric negative pressure, to be immersed in the resin mixture liquor through precompressed timber stock, described resin mixture liquor can be to be selected from and comprises phenol, urea formaldehyde and mixture of catalysts or contain a kind of of urea element, formaldehyde and mixture of catalysts, described mixed liquor also comprises the orchil famille rose and/or the three-coloured amaranth of mixing colours and handling
(ⅲ) under normal pressure, to above-mentioned mixed liquor heating, heating-up temperature is 95-105 ℃,
(ⅳ) above-mentioned impregnated stock is placed in the mould, under the resin solidification temperature, cure under pressure is shaped.
2. by the described method of claim 1, it is characterized in that described phenol and aldehyde are phenol and formaldehyde or furfural, phenol: formaldehyde or furfural=1: 1.25-1.3 (gram-molecular weight) or phenol: formaldehyde (or furfural)=1: 0.8-1.0 (gram-molecular weight).
3. by claim 1 or 2 described methods, it is characterized in that phenol: formaldehyde or furfural=1: 1.25-1.3 (gram-molecular weight), catalyst is selected from base catalysts such as NaOH, potassium hydroxide, sodium carbonate, ammoniacal liquor.
4. by claim 1 or 2 described methods, it is characterized in that phenol: formaldehyde or furfural=1: 0.8-1.0 (gram-molecular weight), catalyst is selected from acidic catalysts such as hydrochloric acid, sulfuric acid, phosphoric acid, acetate, oxalic acid.
5. by the described method of claim 1, it is characterized in that described phenol part is replaced by xylenol or diethylstilbestrol.
6. by the described method of claim 1, it is characterized in that also comprising thiocarbamide or melamine in the mixed liquor of described urea element, formaldehyde and catalyst.
7. by the described method of claim 6, it is characterized in that described urea element: thiocarbamide: formaldehyde=0.8: 0.2: 1.6 (gram-molecular weight), corresponding catalyst is by choosing in the base catalysts such as NaOH, potassium hydroxide, ammonium hydroxide, sodium carbonate, ammoniacal liquor.
8. by the described method of claim 6, it is characterized in that described urea element: melamine: formaldehyde=0.8: 0.097: 1.6 (gram-molecular weight), catalyst is selected base catalyst as claimed in claim 5 for use.
9. the manufacture method of imitation red-wood as claimed in claim 1 is characterized in that, described stock is a paulownia wood.
10. as the manufacture method of claim 1 or 9 described imitation red-woods, it is characterized in that described stock is the timber leftover bits and pieces.
11. an imitation red-wood of making according to the method for claim 1 is characterized in that, described imitation red-wood comprises:
(ⅰ) 10%-40% (dry weight) synthetic resin, described synthetic resin can be selected from phenolic resins and Lauxite,
(ⅱ) 90%-60% (dry weight) fibre structure is without the paulownia and/or the rubber timber of fragmentation,
Wherein synthetic resin is comprised in lumber fibre inside and top layer.
12. by the described imitation red-wood of claim 11, it is characterized in that described synthetic resin content range is 20%-30% (dry weight), corresponding timber content range is 80%-70% (dry weight).
13., it is characterized in that the wood raw material of described imitation red-wood is the paulownia wood leftover bits and pieces as claim 11 or 12 described imitation red-woods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93104336A CN1045561C (en) | 1993-04-13 | 1993-04-13 | Imitation red-wood and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93104336A CN1045561C (en) | 1993-04-13 | 1993-04-13 | Imitation red-wood and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093969A CN1093969A (en) | 1994-10-26 |
| CN1045561C true CN1045561C (en) | 1999-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93104336A Expired - Fee Related CN1045561C (en) | 1993-04-13 | 1993-04-13 | Imitation red-wood and its making method |
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| Country | Link |
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| CN (1) | CN1045561C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756408B (en) * | 2011-04-26 | 2015-12-16 | 永港伟方（北京）科技股份有限公司 | A kind of method of modifying of timber high-endization |
| CN104139440A (en) * | 2014-06-21 | 2014-11-12 | 安徽省绿源工艺品有限责任公司 | Soak solution for salix integra woven material dyed by using amaranth and using method thereof |
| CN108927875A (en) * | 2017-05-27 | 2018-12-04 | 湖南栋梁木业有限公司 | A kind of fast growing wood imitates the production technology of rare wood |
| CN109834776B (en) * | 2019-03-11 | 2021-10-15 | 广平凯王压密科技有限公司 | Crushed wood compaction material and method based on high-frequency glue-free compaction technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597262A (en) * | 1967-06-20 | 1971-08-03 | Degussa | Production of wood-synthetic resin combinations |
| CN88105469A (en) * | 1988-02-01 | 1988-09-14 | 周佑申 | Production technique of plastic fibre |
| CN1037105A (en) * | 1988-04-26 | 1989-11-15 | 李宗奎 | Amber wood and manufacture method thereof |
-
1993
- 1993-04-13 CN CN93104336A patent/CN1045561C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597262A (en) * | 1967-06-20 | 1971-08-03 | Degussa | Production of wood-synthetic resin combinations |
| CN88105469A (en) * | 1988-02-01 | 1988-09-14 | 周佑申 | Production technique of plastic fibre |
| CN1037105A (en) * | 1988-04-26 | 1989-11-15 | 李宗奎 | Amber wood and manufacture method thereof |
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| Publication number | Publication date |
|---|---|
| CN1093969A (en) | 1994-10-26 |
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