CN102615685B - Integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood - Google Patents
Integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood Download PDFInfo
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- CN102615685B CN102615685B CN201210123456.8A CN201210123456A CN102615685B CN 102615685 B CN102615685 B CN 102615685B CN 201210123456 A CN201210123456 A CN 201210123456A CN 102615685 B CN102615685 B CN 102615685B
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Abstract
The invention discloses an integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood. The method comprises the following specific steps of: (1) processing a fast-growing wood raw material into square wood or boards, putting the square wood or boards in a drying kiln to dry and carrying out microwave processing in a microwave processing chamber; and (2) delivering aqueous suspension of nano aluminum hydroxide and a silane coupling agent to a pressurizing impregnation tank, immersing the wood, subjected to the treatment in (1), in the aqueous suspension of the nano aluminum hydroxide and the silane coupling agent, covering a top cover of the impregnation tank, carrying out pressurizing treatment, then relieving pressure, opening the top cover of the impregnation tank, taking out the wood and drying in the drying kiln. After the fast-growing wood is subjected to the treatment according to the invention, the flame-retarding grade reaches the grade B1; the parallel-to-grain compressive strength of the fast-growing wood is 62.1MPa, the lateral hardness is 7965N, the end hardness is 8804N and the abrasion resistance reaches WR2 (not less than 5000r).
Description
Technical field
The invention belongs to lumber functionality improvement field, be specifically related to the wear-resisting integral treatment method of the fire-retardant Hardening of a kind of fast growing wood.
Background technology
There is inflammable problem in timber, many fire occur and spread all directly related with wood material.In addition, compare with materials such as stone materials with other metal, timber (particularly fast growing wood) density is little, its rigidity, wears no resistance, and limits its application., hardness inflammable for timber and the bad shortcoming of wearability, people have carried out the research of many fire-retarding of wood and Hardening, achieve some achievements.But conventional wood flame treatment and the process of timber Hardening are normally separately carried out, and treatment process is loaded down with trivial details, and efficiency is low.And in fire-retarding of wood process and Hardening processing procedure, fire retardant is difficult to the degree of depth and enters wood internal, fire retardant at wood internal skewness, fire retardant and Hardening agent adhesive force in wood little, easily run off, treatment effect has certain ageing.Therefore, select the medicament of potion multiple-effect, by certain physics, chemical treatment method, carry out fire-retarding of wood and the wear-resisting integrated treatment technical research of Hardening, realize the high efficiency composition of fire-retarding of wood, Hardening, wear-resisting functions, significantly improve timber added value very necessary.
Summary of the invention
Technical problem solved by the invention is to provide the fire-retardant Hardening of a kind of fast growing wood wear-resisting integral treatment method; The method is by high-intensity microwave process fast growing wood, and make the fast growing wood inside with certain moisture content produce high temperature rapidly, high temperature impels the moisture rapid vaporization of fast growing wood lumen, produces higher vapour pressure.At fast growing wood cell membrane form micropore in the process that vapour pressure is rushed outward, thus greatly improve the permeability of fast growing wood.Then, the fast growing wood after microwave treatment is immersed in the water slurry of nano-aluminum hydroxide and silane coupler and carry out pressure impregnating process.Because the fast growing wood after microwave treatment process has good permeability, nano-aluminum hydroxide particle and silane coupler enter fast growing wood inside easily via the micropore on fast growing wood cell membrane, silane coupler plays a part parents' agent, nano-aluminum hydroxide and timber can be coupled together closely, improve nano-aluminum hydroxide " implantation " power at wood internal, avoid producing in processing and use procedure running off.Aluminium hydroxide is a kind of environment-friendly highly efficient fire retardant, and has stronger wearability.Nanoscale aluminum hydroxide particles, enter wood internal by the micropore on cell membrane and be attached on wood cell wall, both fabulous fire retardation had been played, and Hardening effect can be played to fast growing wood, improve fast growing wood hardness and wearability, therefore, the superposition that can be reached fast growing wood highly effective flame-retardant and Hardening wear-resisting functions by above-mentioned process be coupled.
Technical problem solved by the invention realizes by the following technical solutions:
The wear-resisting integral treatment method of a kind of fire-retardant Hardening of fast growing wood, concrete steps are as follows:
(1) thickness is become by fast growing wood Raw material processing to be square bar or the sheet material of 10 ~ 200mm; Then being placed in drying kiln for drying to moisture content is 22% ~ 30%; Be placed in microwave treatment indoor again and carry out microwave treatment, processing power is 10 ~ 30KW, and the processing time is 20 ~ 60s;
(2) first the aqueous suspension of nano-aluminum hydroxide and silane coupler is delivered to pressure impregnating tank, again the timber processed through (1) is immersed in the aqueous suspension of nano-aluminum hydroxide and silane coupler, cover immersion can top cover, pressurized treatments, pressure is 0.6 ~ 1.2MPa, and the pressure impregnating time is 20 ~ 40min; Then release, opens immersion can top cover, taken out by timber, then to be placed in drying kiln for drying to moisture content is 8% ~ 12%.
The mass ratio of the timber and aqueous suspension that are delivered to pressure impregnating tank in step (2) is 1:20.
The preparation method of the aqueous suspension of described nano-aluminum hydroxide and silane coupler is: nano-aluminum hydroxide powder and silane coupler are poured into be equipped with 25 ~ 35 DEG C of hot water with in the container of agitator, turn on agitator, rotating speed 1000r/min, stirs 8 ~ 12min, can obtain.
Described water, nano-aluminum hydroxide and silane coupler mass ratio are 100:20:0.5.
beneficial effect:utilize inside and outside the wood cell wall of process of the present invention and all attached to uniform nano-aluminum hydroxide particle, have fire resistance significantly, meanwhile, nano-aluminum hydroxide particle serves extremely strong Hardening effect in timber, and the hardness of wood and wearability significantly improve.Simultaneously, owing to the addition of silane coupler, nano-aluminum hydroxide " implantation " power on wood cell wall improves greatly, and substantially there will not be the loss of fire retardant and Hardening anti-wear agent in timber use procedure, fast growing wood fire resistance, hardness and wearability can not in use reduce.Utilize the fast growing wood flame retardant rating after this inventive method process to reach B1 level, fast growing wood parallel-to-grain compressive strength 62.1MPa, side hardness 7965N, end hardness 8804N, anti-wear performance reaches WR2(>=5000r).
Accompanying drawing explanation
Fig. 1 is the wear-resisting integrated treatment flow chart of the fire-retardant Hardening of fast growing wood.
Detailed description of the invention
Reaching object to make technological means of the present invention, creation characteristic, workflow, using method and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, the wear-resisting integrated treatment flow chart of the fire-retardant Hardening of fast growing wood, all can process according to this flow chart for various fast growing wood, obtains the fast growing wood with highly effective flame-retardant and Hardening wear-resisting functions.
Embodiment 1
(1) Fast growth poplar flitch (plate) material processing: the timber of fresh cut is processed into the square bar that thickness is 80mm or sheet material;
(2) Fast growth poplar flitch (plate) material is dry: it is 24% that flitch (plate) material is sent into drying kiln for drying to moisture content;
(3) high intensity microwave process: dried timber is delivered to microwave treatment room and carries out microwave treatment; Processing power is 10KW, and the processing time is 50s;
(4) aqueous suspension of preparation of nano aluminium hydroxide and silane coupler: a certain amount of nano-aluminum hydroxide powder and silane coupler are poured into be equipped with 30 DEG C of hot water with in the container of agitator, turn on agitator, rotating speed 1000r/min, stir 10min, the aqueous suspension of obtained nano-aluminum hydroxide and silane coupler; Wherein water, nano-aluminum hydroxide and silane coupler mass ratio are 100:20:0.5;
(5) pressure impregnating process: pour the aqueous suspension of the nano-aluminum hydroxide prepared and silane coupler into pressure impregnating tank, then by timber submergence aqueous suspension, cover immersion can top cover, pressurized treatments; Pressure is 0.8MPa, and the pressure impregnating time is 30min; Timber and aqueous suspension mass ratio are 1:20;
(6) dry process: release, opens immersion can top cover, is taken out by the timber of pressure impregnating, then send into lumber kiln from immersion can, adopts Wood drying method to carry out drying process, makes moisture content reach about 10%.
Embodiment 2
(1) fast-growing Eucalyptus side (plate) material processing: the timber of fresh cut is processed into the square bar that thickness is 150mm or sheet material;
(2) fast-growing Eucalyptus side (plate) material is dry: it is 27% that flitch (plate) material is sent into drying kiln for drying to moisture content;
(3) high intensity microwave process: dried timber is delivered to microwave treatment room and carries out microwave treatment; Processing power is 25KW, and the processing time is 40s;
(4) aqueous suspension of preparation of nano aluminium hydroxide and silane coupler: a certain amount of nano-aluminum hydroxide powder and silane coupler are poured into be equipped with 30 DEG C of hot water with in the container of agitator, turn on agitator, rotating speed 1000r/min, stir 10min, the aqueous suspension of obtained nano-aluminum hydroxide and silane coupler; Water, nano-aluminum hydroxide and silane coupler mass ratio are 100:20:0.5;
(5) pressure impregnating process: pour the aqueous suspension of the nano-aluminum hydroxide prepared and silane coupler into pressure impregnating tank, then by timber submergence aqueous suspension, cover immersion can top cover, pressurized treatments; Pressure is 1MPa, and the pressure impregnating time is 40min; Timber and aqueous suspension mass ratio are 1:20;
(6) dry process: release, opens immersion can top cover, is taken out by the timber of pressure impregnating, then send into lumber kiln from immersion can, adopts Wood drying method to carry out drying process, makes moisture content reach about 10%.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. the wear-resisting integral treatment method of the fire-retardant Hardening of fast growing wood, it is characterized in that, concrete steps are as follows:
(1) thickness is become by fast growing wood Raw material processing to be square bar or the sheet material of 10 ~ 200mm; Then being placed in drying kiln for drying to moisture content is 22% ~ 30%; Be placed in microwave treatment indoor again and carry out microwave treatment, processing power is 10 ~ 30KW, and the processing time is 20 ~ 60s;
(2) first the aqueous suspension of nano-aluminum hydroxide and silane coupler is delivered to pressure impregnating tank, again the timber processed through (1) is immersed in the aqueous suspension of nano-aluminum hydroxide and silane coupler, cover immersion can top cover, pressurized treatments, pressure is 0.6 ~ 1.2MPa, and the pressure impregnating time is 20 ~ 40min; Then release, opens immersion can top cover, taken out by timber, then to be placed in drying kiln for drying to moisture content is 8% ~ 12%;
The preparation method of the aqueous suspension of described nano-aluminum hydroxide and silane coupler is: nano-aluminum hydroxide powder and silane coupler are poured into be equipped with 25 ~ 35 DEG C of hot water with in the container of agitator, turn on agitator, rotating speed 1000r/min, stirs 8 ~ 12min, namely obtains; Described water, nano-aluminum hydroxide and silane coupler mass ratio are 100:20:0.5.
2. the wear-resisting integral treatment method of the fire-retardant Hardening of a kind of fast growing wood according to claim 1, is characterized in that, the mass ratio of the timber and aqueous suspension that are delivered to pressure impregnating tank in step (2) is 1:20.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102873724B (en) * | 2012-10-15 | 2014-10-29 | 安徽农业大学 | Nanometer hydroxide wood composite material and preparation method thereof |
| CN102995141B (en) * | 2012-10-25 | 2014-06-18 | 郭荣才 | Bamboo fiber |
| CN105583926B (en) * | 2014-10-21 | 2017-11-07 | 贾超 | A kind of Wooden modifying decoction and preparation method |
| CN107457858A (en) * | 2017-08-30 | 2017-12-12 | 常州市天宁区鑫发织造有限公司 | A kind of particieboard fire retardant |
| CN107901161A (en) * | 2017-11-24 | 2018-04-13 | 徐州得铸生物科技有限公司 | A kind of nano-compound modified wood of garden landscape |
| CN110605767A (en) * | 2019-10-25 | 2019-12-24 | 毛克升 | Wear-resistant treatment method for Chinese fir |
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| CN102229170A (en) * | 2011-06-23 | 2011-11-02 | 中南林业科技大学 | Method for manufacturing high-quality poplar composite material |
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| JPH02162001A (en) * | 1988-12-15 | 1990-06-21 | Matsushita Electric Works Ltd | Manufacture of modified wood |
| US5075131A (en) * | 1989-03-10 | 1991-12-24 | Fuyo Lumber Sales Co., Ltd. | Method for preservation treatment of wood |
| CN101306547A (en) * | 2008-06-13 | 2008-11-19 | 昆明理工大学 | Method of treating fire retardant wood using microwave |
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Inventor after: Li Xingong Inventor after: Duan Jiabao Inventor after: Li Xianjun Inventor after: Wu Yiqiang Inventor after: Zheng Xia Inventor before: Li Xingong Inventor before: Li Xianjun Inventor before: Wu Yiqiang Inventor before: Zheng Xia |
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Effective date of registration: 20170904 Address after: Lu Miao village the Yanghe River town Pingqiao District Xinyang city Henan province 464000 Hengshun Paper No. 1 Patentee after: Henan Hengshun plant fiber board Co. Ltd. Address before: 410000 Shaoshan South Road, Hunan, No. 498, No. Patentee before: Central South University of Forestry and Technology |
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