CN104191482A - Method for bleaching wood by use of hydrogen peroxide and sodium carbonate - Google Patents
Method for bleaching wood by use of hydrogen peroxide and sodium carbonate Download PDFInfo
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- CN104191482A CN104191482A CN201410442741.5A CN201410442741A CN104191482A CN 104191482 A CN104191482 A CN 104191482A CN 201410442741 A CN201410442741 A CN 201410442741A CN 104191482 A CN104191482 A CN 104191482A
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- hydrogen peroxide
- sodium carbonate
- bleaching
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Abstract
The invention discloses a method for bleaching wood by use of hydrogen peroxide and sodium carbonate. The method comprises the following steps: (1) preparing materials, namely preparing a sodium carbonate solution having the concentration of 14-15% and the hydrogen peroxide having the concentration of 30-32% for later use; (2) firstly applying the sodium carbonate solution having the concentration of 14-15% so that the solution thoroughly penetrates into wood to react with chromophoric groups such as tannic acid; (3) spreading wood flour after 5-6 minutes and wiping by use of abrasive cloth; (4) immediately applying the hydrogen peroxide having the concentration of 30-32% so that the bleached wood becomes white slowly, after standing for more than 3 hours, repeatedly wiping by use of wetted abrasive cloth. The method for bleaching wood by use of hydrogen peroxide and sodium carbonate has different effects on wood different in hardness or color and luster, but is better than other bleaching agents in effect; for example, the method is still effective for teakwood which is hard and deep in color and difficult to bleach; besides, the method does not affect the drying time of coatings such as a nitrolacquer and an acid curing amino paint.
Description
Technical field
The present invention relates to bleach the method for timber, especially a kind of method of utilizing hydrogen peroxide and sodium carbonate bleaching timber.
Background technology
Timber is subject to after the erosion of stain fungus and mould, and variation has occurred original color, and this change color is called variable color.Stain fungus or mould are invaded after timber, absorb the nutriment in wood cell chamber, but do not decompose the material of cell membrane, in its whole show process, can only cause variable color.Common are sapwood and become cinerous, be blue-stain.Also have by stain fungus and cause that timber is rufous spot, is erythema; Also have variegated be separated by be assorted spot etc.
These spots of wood surface, bring inhomogeneous disadvantage can to coating color and luster.Especially when covering with paint, lacquer, colour wash, etc. into light-coloured transparent look, will make the decorate properties of wood product surface reduce, so this type of timber is unfit to do the plane materiel of light woodwork, use.If while covering with paint, lacquer, colour wash, etc. dark Transparent color, if blue-stain or spot can be covered, also can use, but often all need to carry out colorant match with pigment or dyestuff, to make up the defect that it is caused.
The timber of variable color only can be for dark application or opaque application.But in recent years, the supply of high-quality timber reduces gradually, force people to utilize those pollution materials and variable color material to carry out clear-coated, the timber of therefore variable color material being bleached into qualified color seems more and more important.Wood Bleaching is also referred to as timber decolouring, and the object of Wood Bleaching is that the color of wood surface is shoaled, and reduces the difference of each site color depth of wood surface, makes color uniformity.
So the bleaching of timber does not have paper, cloth bleaching harshness like that, does not need to reach high whiteness like that.The method of suitable bleaching paper, cloth is a lot, as the bleaching of heating, in the sootiness such as airtight indoor Sulfur bleaching, several medicines are mixed for bleaching etc., but its effect is not very good for the bleaching of timber, and complicated operation, time-consuming.Except said method, the method for suitable Wood Bleaching is also a lot.
Summary of the invention
A kind of method of utilizing hydrogen peroxide and sodium carbonate bleaching timber that provides is provided.
This method of utilizing hydrogen peroxide and sodium carbonate bleaching timber, is comprised of following steps:
1. get the raw materials ready: prepare respectively the sodium carbonate liquor of 14～15% concentration and the hydrogen peroxide of 30～32% concentration is standby;
2. first brush the sodium carbonate liquor of 14～15% concentration, allow solution fully be penetrated in timber, react with chromophoric groups such as tannic acid;
3. after 5～6min, sprinkle wood powder emery cloth wiped clean;
4. then brush immediately the hydrogen peroxide of 30～32% concentration, the timber of being bleached slowly starts to bleach, after approximately placing more than 3h, with the wiping repeatedly of immersion emery cloth;
5. by the abundant wiped clean of bleaching material out, according to the situation of timber, after bleaching or washing, wait after to be dried and re-use;
Above concentration all refers to mass percent concentration.
The beneficial effect of the invention:
The present invention first reacts with chromophoric groups such as alkali and tannic acid, and then uses hydrogen peroxide bleaching.
Although different to different hardness or the different timber effect of color and luster, effective than other bleaching agents, as still effective in what the hard and timber of color depth of teak was difficult to bleach.And do not affect drying time of the coating such as the amino paint of nitrate paint, acid cure.
The specific embodiment
Embodiment 1:
The method of utilizing hydrogen peroxide and sodium carbonate bleaching timber, is comprised of following steps:
1. get the raw materials ready: prepare respectively the sodium carbonate liquor of 14% concentration and the hydrogen peroxide of 30% concentration is standby;
2. first brush the sodium carbonate liquor of 14% concentration, allow solution fully be penetrated in timber, react with chromophoric groups such as tannic acid;
3. after 5min, sprinkle wood powder emery cloth wiped clean;
4. then brush immediately the hydrogen peroxide of 30% concentration, the timber of being bleached slowly starts to bleach, after approximately placing more than 3h, with the wiping repeatedly of immersion emery cloth;
5. by the abundant wiped clean of bleaching material out, according to the situation of timber, after bleaching or washing, wait after to be dried and re-use;
Above concentration all refers to mass percent concentration.
Embodiment 2:
The method of utilizing hydrogen peroxide and sodium carbonate bleaching timber, is comprised of following steps:
1. get the raw materials ready: prepare respectively the sodium carbonate liquor of 15% concentration and the hydrogen peroxide of 32% concentration is standby;
2. first brush the sodium carbonate liquor of 15% concentration, allow solution fully be penetrated in timber, react with chromophoric groups such as tannic acid;
3. after 6min, sprinkle wood powder emery cloth wiped clean;
4. then brush immediately the hydrogen peroxide of 32% concentration, the timber of being bleached slowly starts to bleach, after approximately placing more than 3h, with the wiping repeatedly of immersion emery cloth;
5. by the abundant wiped clean of bleaching material out, according to the situation of timber, after bleaching or washing, wait after to be dried and re-use;
Above concentration all refers to mass percent concentration.
Claims (1)
1. a method of utilizing hydrogen peroxide and sodium carbonate bleaching timber, is characterized in that: following steps, consist of:
1. get the raw materials ready: prepare respectively the sodium carbonate liquor of 14～15% concentration and the hydrogen peroxide of 30～32% concentration is standby;
2. first brush the sodium carbonate liquor of 14～15% concentration, allow solution fully be penetrated in timber, react with chromophoric groups such as tannic acid;
3. after 5～6min, sprinkle wood powder emery cloth wiped clean;
4. then brush immediately the hydrogen peroxide of 30～32% concentration, the timber of being bleached slowly starts to bleach, after approximately placing more than 3h, with the wiping repeatedly of immersion emery cloth;
5. by the abundant wiped clean of bleaching material out, according to the situation of timber, after bleaching or washing, wait after to be dried and re-use;
Above concentration all refers to mass percent concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442741.5A CN104191482A (en) | 2014-08-28 | 2014-08-28 | Method for bleaching wood by use of hydrogen peroxide and sodium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442741.5A CN104191482A (en) | 2014-08-28 | 2014-08-28 | Method for bleaching wood by use of hydrogen peroxide and sodium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104191482A true CN104191482A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410442741.5A Pending CN104191482A (en) | 2014-08-28 | 2014-08-28 | Method for bleaching wood by use of hydrogen peroxide and sodium carbonate |
Country Status (1)
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| CN (1) | CN104191482A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924395A (en) * | 2015-06-10 | 2015-09-23 | 马魁 | Treating agent convenient for corn bran dyeing |
| CN106064419A (en) * | 2016-07-29 | 2016-11-02 | 安徽昌发实业有限公司 | A kind of manufacture method of surface carbonation chair |
| CN106113187A (en) * | 2016-08-16 | 2016-11-16 | 浙江良友木业有限公司 | A kind of surface processing technique on floor |
| CN106272805A (en) * | 2016-08-16 | 2017-01-04 | 浙江良友木业有限公司 | A kind of process of surface treatment on solid wood class floor |
| CN106272846A (en) * | 2016-08-16 | 2017-01-04 | 浙江良友木业有限公司 | A kind of process of surface treatment on floor |
| CN106272847B (en) * | 2016-08-16 | 2018-11-09 | 浙江良友木业有限公司 | A kind of surface treatment and finishing process on floor |
| CN109676730A (en) * | 2018-11-14 | 2019-04-26 | 南京林业大学 | A kind of Wood Bleaching agent prescription and its treatment process and processing unit |
| CN114536495A (en) * | 2022-01-20 | 2022-05-27 | 国家林业和草原局竹子研究开发中心 | Color difference and color regulation and control method for decorative veneering veneer |
-
2014
- 2014-08-28 CN CN201410442741.5A patent/CN104191482A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104924395A (en) * | 2015-06-10 | 2015-09-23 | 马魁 | Treating agent convenient for corn bran dyeing |
| CN106064419A (en) * | 2016-07-29 | 2016-11-02 | 安徽昌发实业有限公司 | A kind of manufacture method of surface carbonation chair |
| CN106113187A (en) * | 2016-08-16 | 2016-11-16 | 浙江良友木业有限公司 | A kind of surface processing technique on floor |
| CN106272805A (en) * | 2016-08-16 | 2017-01-04 | 浙江良友木业有限公司 | A kind of process of surface treatment on solid wood class floor |
| CN106272846A (en) * | 2016-08-16 | 2017-01-04 | 浙江良友木业有限公司 | A kind of process of surface treatment on floor |
| CN106113187B (en) * | 2016-08-16 | 2018-06-19 | 浙江良友木业有限公司 | A kind of surface processing technique on floor |
| CN106272846B (en) * | 2016-08-16 | 2018-11-09 | 浙江良友木业有限公司 | A kind of process of surface treatment on floor |
| CN106272847B (en) * | 2016-08-16 | 2018-11-09 | 浙江良友木业有限公司 | A kind of surface treatment and finishing process on floor |
| CN109676730A (en) * | 2018-11-14 | 2019-04-26 | 南京林业大学 | A kind of Wood Bleaching agent prescription and its treatment process and processing unit |
| CN109676730B (en) * | 2018-11-14 | 2020-07-31 | 南京林业大学 | Wood bleaching agent formula and treatment process and treatment device thereof |
| CN114536495A (en) * | 2022-01-20 | 2022-05-27 | 国家林业和草原局竹子研究开发中心 | Color difference and color regulation and control method for decorative veneering veneer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |