SU1257079A1 - Composition for wood particle boards - Google Patents
Composition for wood particle boards Download PDFInfo
- Publication number
- SU1257079A1 SU1257079A1 SU843772396A SU3772396A SU1257079A1 SU 1257079 A1 SU1257079 A1 SU 1257079A1 SU 843772396 A SU843772396 A SU 843772396A SU 3772396 A SU3772396 A SU 3772396A SU 1257079 A1 SU1257079 A1 SU 1257079A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- urea
- polyvinyl alcohol
- condensation
- product
- parts
- Prior art date
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Description
1 1eleven
Изобретение относитс к деревообрабатывающей промьшленности, а именно к производству древесностружечных плит.The invention relates to the woodworking industry, namely to the production of chipboard.
Целью изобретени вл етс улучшение физико-механических свойств плит.The aim of the invention is to improve the physicomechanical properties of the plates.
Изготовление древесностружечных плит осуществл ют по следующей технологии .The production of chipboard is carried out according to the following technology.
Древесную стружку с влажностью 3% обрабатывают св зующим. Массу перемешивают 5-7 мин, после чего прессуют в гор чем прессе при 16015 С, удельном давлении 2,0-2,5 МПа. Врем вьодержки 0,6-0,7 мин/мм, толщина плит 20 мм.Wood chips with a moisture content of 3% are treated with a binder. The mass is stirred for 5-7 minutes, after which it is pressed in a hot press at 16015 С, specific pressure 2.0-2.5 MPa. Time voderki 0.6-0.7 min / mm, plate thickness 20 mm.
Св зующее получают смешением 59- 60%-ных водных растворов карбамидо- формальдегидной смолы с отвердителемThe binder is obtained by mixing 59-60% aqueous solutions of a urea-formaldehyde resin with a hardener.
257079257079
и продукта конденсации карбамида и поливинилового спирта.and the condensation product of urea and polyvinyl alcohol.
Продукт получают конденсацией карбамида (90 мае.ч.) с высокомоле- 5 кул рным поливиниловым спиртомThe product is obtained by the condensation of carbamide (90 wt. Parts) with high molecular weight polyvinyl alcohol.
(44 мае.ч.) в присутствии глицерина (1,8 мае.ч.). Глицерин выполн ет- роль катализатора. Конденсацию ведут при 175-185°С в течение 2,5-3,5 ч. О Полученный смолообразный продукт имеет в зкость по ВЗ-4 11-13,5 с, молекул рную массу, определ емую вискозиметрическим методом 1130-2690(44 parts by weight) in the presence of glycerol (1.8 parts by hours). Glycerin performs the role of a catalyst. Condensation is carried out at 175-185 ° C for 2.5-3.5 hours. O The resulting resinous product has an OT-4 viscosity of 11-13.5 s, the molecular weight determined by the viscometric method is 1130-2690
полностью растворим в воде, ацетоне. 15 completely soluble in water, acetone. 15
Рецептуры композиций по изобретению приведены в табл. 1. Результаты испытаний композиции по изобретению в сравнении с известной и 20 контрольньми - в табл. 2.The formulations of the compositions according to the invention are given in table. 1. The test results of the composition according to the invention in comparison with the known and 20 controls are in table. 2
Таблица 1 Рецептуры композицийTable 1 Formulation Compositions
6,5 10,0 13,56.5 10.0 13.5
0,5 0,75 1,00.5 0.75 1.0
1,3 4,4 7,51.3 4.4 7.5
91,7 84,85 7891.7 84.85 78
5707957079
и продукта конденсации карбамида и поливинилового спирта.and the condensation product of urea and polyvinyl alcohol.
Продукт получают конденсацией карбамида (90 мае.ч.) с высокомоле- 5 кул рным поливиниловым спиртомThe product is obtained by the condensation of carbamide (90 wt. Parts) with high molecular weight polyvinyl alcohol.
(44 мае.ч.) в присутствии глицерина (1,8 мае.ч.). Глицерин выполн ет- роль катализатора. Конденсацию ведут при 175-185°С в течение 2,5-3,5 ч. О Полученный смолообразный продукт имеет в зкость по ВЗ-4 11-13,5 с, молекул рную массу, определ емую вискозиметрическим методом 1130-2690,(44 parts by weight) in the presence of glycerol (1.8 parts by hours). Glycerin performs the role of a catalyst. Condensation is carried out at 175-185 ° C for 2.5-3.5 hours. O The resulting resinous product has an OT-4 viscosity of 11-13.5 s, the molecular weight determined by the viscometric method is 1130-2690,
полностью растворим в воде, ацетоне. 15 completely soluble in water, acetone. 15
10,0 10,0 0,75 0,7510.0 10.0 0.75 0.75
4,44.4
4,4 84,85 84,854.4 84.85 84.85
Свойства древесностружечных плит (толщина 20 мм, плотность 850 кг/м )Chipboard properties (thickness 20 mm, density 850 kg / m)
Предел прочности при статическом изгибе, МПа 28,5Strength at a static bend, MPa 28,5
29,0 27,5 26,5 28,3 20,5 20,029.0 27.5 26.5 28.3 20.5 20.0
5,9 6,0 5,9 5,2 6,0 3,55.9 6.0 5.9 5.2 6.0 3.5
9,2 9,0 9,3 10,1 9,39.2 9.0 9.3 10.1 9.3
3,0 2,9 3,3 3,2 19,23.0 2.9 3.3 3.2 19.2
0,01 0,009 0,0095 Добавка - смесь карбамида и поливинилового спирта.0.01 0.009 0.0095 Additive - a mixture of urea and polyvinyl alcohol.
.Редактор Э, Слиган.Editor, Sligan
Составитель Г. СтепановаCompiled by G. Stepanova
Техред Л.Сердюкова Корректор М. Самборска Tehred L. Serdyukova Proofreader M. Samborska
Заказ 4880/19Order 4880/19
Тираж 470Circulation 470
ВНИИПИ Государственного комитета СССРVNIIPI USSR State Committee
по делам изобретений и открытий 113035, Москва, Ж-35, Раушска наб., д, 4/5for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5
Производственно-полиграфическое предпри тие, г. Ужгород, ул. Проектна , 4Production and printing company, Uzhgorod, st. Project, 4
Таблица 2table 2
3,93.9
15,015.0
ПодписноеSubscription
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU843772396A SU1257079A1 (en) | 1984-07-12 | 1984-07-12 | Composition for wood particle boards |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU843772396A SU1257079A1 (en) | 1984-07-12 | 1984-07-12 | Composition for wood particle boards |
Publications (1)
Publication Number | Publication Date |
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SU1257079A1 true SU1257079A1 (en) | 1986-09-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU843772396A SU1257079A1 (en) | 1984-07-12 | 1984-07-12 | Composition for wood particle boards |
Country Status (1)
Country | Link |
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SU (1) | SU1257079A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1056160C (en) * | 1993-08-20 | 2000-09-06 | 张锋 | Modified urea-formaldehyde resin and production process thereof |
WO2015086035A1 (en) * | 2013-12-12 | 2015-06-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Wood material product or natural-fiber composite material product and use of a formaldehyde-free amino or amide resin to produce said product |
-
1984
- 1984-07-12 SU SU843772396A patent/SU1257079A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 783039, кл. В 29 J 5/00, 1980. Авторское свидетельство СССР № 939490, кл. С 08 L 61/24, 1981, * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1056160C (en) * | 1993-08-20 | 2000-09-06 | 张锋 | Modified urea-formaldehyde resin and production process thereof |
WO2015086035A1 (en) * | 2013-12-12 | 2015-06-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Wood material product or natural-fiber composite material product and use of a formaldehyde-free amino or amide resin to produce said product |
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