RU2008139647A - METHOD FOR PRODUCING MODIFIED WOOD - Google Patents
METHOD FOR PRODUCING MODIFIED WOOD Download PDFInfo
- Publication number
- RU2008139647A RU2008139647A RU2008139647/04A RU2008139647A RU2008139647A RU 2008139647 A RU2008139647 A RU 2008139647A RU 2008139647/04 A RU2008139647/04 A RU 2008139647/04A RU 2008139647 A RU2008139647 A RU 2008139647A RU 2008139647 A RU2008139647 A RU 2008139647A
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- urea
- heat treatment
- modified wood
- weight
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- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
1. Способ получения модифицированной древесины, включающий пропитку заготовок 30…40%-ным водным раствором карбамида, содержащим форконденсат карбамидоформальдегидного олигомера в количестве 10…12% от массы сухого карбамида, сушку, прессование и термообработку, отличающийся тем, что в пропиточный раствор добавляют отвердитель - карбамидоформальдегидную смолу марки ПКП-52 (ТУ 2223-255-00203447-98) в количестве 21…25% от массы карбамидоформальдегидного олигомера, а перед термообработкой на древесину в течение 30 с воздействуют импульсным магнитным полем с амплитудой 0,5 Тл, частотой следования импульсов 50 Гц и длительностью треугольных импульсов по основанию 30 мкс. ! 2. Способ получения модифицированной древесины по п.1, отличающийся тем, что термообработку проводят при температуре 140…160°С. 1. A method of producing modified wood, including the impregnation of preforms with a 30 ... 40% aqueous urea solution containing a urea-formaldehyde oligomer precondensate in an amount of 10 ... 12% by weight of dry urea, drying, pressing and heat treatment, characterized in that a hardener is added to the impregnating solution - urea-formaldehyde resin of the PKP-52 brand (TU 2223-255-00203447-98) in an amount of 21 ... 25% by weight of the urea-formaldehyde oligomer, and before heat treatment the wood is exposed to a pulsed magnetic field for 30 s with an amplitude of 0.5 T, a pulse repetition rate of 50 Hz and a triangular pulse duration on the base 30 microseconds. ! 2. The method of obtaining modified wood according to claim 1, characterized in that the heat treatment is carried out at a temperature of 140 ... 160 ° C.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008139647/05A RU2401195C2 (en) | 2008-10-07 | 2008-10-07 | Method of producing modified timber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008139647/05A RU2401195C2 (en) | 2008-10-07 | 2008-10-07 | Method of producing modified timber |
Publications (2)
Publication Number | Publication Date |
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RU2008139647A true RU2008139647A (en) | 2010-04-20 |
RU2401195C2 RU2401195C2 (en) | 2010-10-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2008139647/05A RU2401195C2 (en) | 2008-10-07 | 2008-10-07 | Method of producing modified timber |
Country Status (1)
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RU (1) | RU2401195C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017056013A2 (en) | 2015-09-29 | 2017-04-06 | Stora Enso Oyj | Modified wood product and a process for producing said product |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2476311C1 (en) * | 2011-09-19 | 2013-02-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежская государственная лесотехническая академия" | Method of timber modification |
RU2712521C1 (en) * | 2019-02-07 | 2020-01-29 | Общество с ограниченной ответственностью "Модификация" | Method of producing modified wood |
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2008
- 2008-10-07 RU RU2008139647/05A patent/RU2401195C2/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017056013A2 (en) | 2015-09-29 | 2017-04-06 | Stora Enso Oyj | Modified wood product and a process for producing said product |
Also Published As
Publication number | Publication date |
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RU2401195C2 (en) | 2010-10-10 |
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Legal Events
Date | Code | Title | Description |
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PC41 | Official registration of the transfer of exclusive right |
Effective date: 20150128 |
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PD4A | Correction of name of patent owner | ||
PC41 | Official registration of the transfer of exclusive right |
Effective date: 20170720 |
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PC41 | Official registration of the transfer of exclusive right |
Effective date: 20190115 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20191008 |