CN102975271B - A kind of particieboard of low formaldehyde emission - Google Patents
A kind of particieboard of low formaldehyde emission Download PDFInfo
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- CN102975271B CN102975271B CN201210517257.5A CN201210517257A CN102975271B CN 102975271 B CN102975271 B CN 102975271B CN 201210517257 A CN201210517257 A CN 201210517257A CN 102975271 B CN102975271 B CN 102975271B
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- wood shavings
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Abstract
A particieboard for low formaldehyde emission, comprises layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings.Particieboard of the present invention significantly reduces the burst size of formaldehyde, meets the security of people to material and the high request of the feature of environmental protection.
Description
Technical field
The present invention relates to a kind of particieboard of low formaldehyde emission, belong to artificial board production field.
technical background
The kind of wood-based plate has a lot, and wherein the performance of particieboard and medium density fibre board (MDF) compare favourably, and cost is lower, obtains develop rapidly in China.Along with the fast development of national economy and the raising of people's environmental consciousness, people have higher requirement to the security of material and the feature of environmental protection.The invention provides a kind of particieboard of low formaldehyde emission, significantly can reduce burst size of methanal.
Summary of the invention
The object of this invention is to provide a kind of particieboard of low formaldehyde emission, significantly can reduce burst size of methanal.
For realizing above object, the particieboard of a kind of low formaldehyde emission of the present invention, comprise layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, the water content of wood shavings is 5%-7%, and the wood shavings mass ratio of top layer and sandwich layer is 70:30-40:60; Top layer applies Lauxite (UF resin), and applied amount is the 8%-10% of top layer wood shavings quality, and sandwich layer applies isocyanide ester adhesive (MDI), and applied amount is the 3%-5% of sandwich layer wood shavings quality.
The beneficial effect that the present invention produces is that the present invention takes following measures to reduce the burst size of methanal of particieboard:
One, particieboard top layer of the present invention be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, cotton stalk has significant aldehydes removal effect, and sandwich layer of the present invention is textile bar wood shavings, in hot pressing, formaldehyde is to sandwich layer transmission, and the cotton stalk and the formaldehyde that are conducive to sandwich layer fully react, and reduces the burst size of formaldehyde.
Two, particieboard sandwich layer of the present invention adopts MDI to replace UF resin, reduce the source producing free formaldehyde, MDI effectively can reduce burst size of methanal simultaneously, and improves internal bond strength, and sandwich layer wood shavings quality proportion is higher, then burst size of methanal is lower, internal bond strength is higher.Because in hot pressing, the heat on top layer is by steam to sandwich layer transmission, and formaldehyde is along with steam is also to sandwich layer transmission, and the MDI of a part of formaldehyde and sandwich layer reacts away, thus reduces the burst size of formaldehyde.
Three, the present invention controls the moisture content of wood shavings is 5%-7%, and when other conditions are identical, in above-mentioned scope constantly, burst size of methanal is low for wood shavings moisture content, and physical and mechanical property all meets national standard.If wood shavings moisture content is high, then in hot-press solidifying process, the humidity of plank inside raises, higher humidity can accelerate the hydrolysis of methyl ether key, methylol, hemiacetal, hydrolysis creates free formaldehyde, and this part formaldehyde not necessarily all discharges in hot pressing, if produce formaldehydogenic amount more than the increment discharged in hot pressing, the free formaldehyde then remained in plate is also many, so becomes the Form aldehyde release after plate also thereupon more.
Embodiment
Embodiment 1:
A particieboard for low formaldehyde emission, comprises layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, and the water content of wood shavings is 5%, and the wood shavings mass ratio of top layer and sandwich layer is 70:30; Top layer applies UF resin, and applied amount is 8% of top layer wood shavings quality, and sandwich layer applies MDI, and applied amount is 3% of sandwich layer wood shavings quality.
Embodiment 2:
A particieboard for low formaldehyde emission, comprises layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, and the water content of wood shavings is 6%, and the wood shavings mass ratio of top layer and sandwich layer is 60:40; Top layer applies UF resin, and applied amount is 9% of top layer wood shavings quality, and sandwich layer applies MDI, and applied amount is 4% of sandwich layer wood shavings quality.
Embodiment 3:
A particieboard for low formaldehyde emission, comprises layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, and the water content of wood shavings is 7%, and the wood shavings mass ratio of top layer and sandwich layer is 50:50; Top layer applies UF resin, and applied amount is 10% of top layer wood shavings quality, and sandwich layer applies MDI, and applied amount is 5% of sandwich layer wood shavings quality.
Embodiment 4:
A particieboard for low formaldehyde emission, comprises layer, sandwich layer, top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings, and the water content of wood shavings is 5%, and the wood shavings mass ratio of top layer and sandwich layer is 40:60; Top layer applies UF resin, and applied amount is 9% of top layer wood shavings quality, and sandwich layer applies MDI, and applied amount is 4% of sandwich layer wood shavings quality.
The burst size of methanal of the particieboard of each embodiment and the data of physical and mechanical property as shown in table 1.
The burst size of methanal of particieboard that each embodiment of table 1 is produced and the data of physical and mechanical property
Claims (4)
1. a particieboard for low formaldehyde emission, comprises layer, sandwich layer, it is characterized in that, described top layer be cotton stalk wood shavings and the black pine wood shavings of equal in quality mix wood shavings, sandwich layer is textile bar wood shavings; Described top layer applies UF resin, and sandwich layer applies MDI.
2. the particieboard of a kind of low formaldehyde emission as claimed in claim 1, is characterized in that, the applied amount of described top layer UF resin is the 8%-10% of top layer wood shavings quality, and the applied amount of described sandwich layer MDI is the 3%-5% of sandwich layer wood shavings quality degree.
3. the particieboard of a kind of low formaldehyde emission as claimed in claim 1 or 2, is characterized in that, described cotton stalk wood shavings and the water content of black pine wood shavings are 5%-7%.
4. the particieboard of a kind of low formaldehyde emission as claimed in claim 1 or 2, is characterized in that, the wood shavings mass ratio of described top layer and sandwich layer is 70:30-40:60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517257.5A CN102975271B (en) | 2012-12-06 | 2012-12-06 | A kind of particieboard of low formaldehyde emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517257.5A CN102975271B (en) | 2012-12-06 | 2012-12-06 | A kind of particieboard of low formaldehyde emission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102975271A CN102975271A (en) | 2013-03-20 |
| CN102975271B true CN102975271B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210517257.5A Active CN102975271B (en) | 2012-12-06 | 2012-12-06 | A kind of particieboard of low formaldehyde emission |
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| CN (1) | CN102975271B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103308A (en) * | 2018-02-01 | 2019-08-09 | 寿光市鲁丽木业股份有限公司 | It is a kind of can facing oriented wood chipboard glue-applying technique |
| CN108748597B (en) * | 2018-06-19 | 2023-08-04 | 万华禾香集团有限公司 | Method for manufacturing multi-layer shaving board and multi-layer shaving board |
| CN112192691A (en) * | 2020-09-29 | 2021-01-08 | 山东俏家装饰新材料有限公司 | LSB plate production process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880034A (en) * | 2005-06-13 | 2006-12-20 | 北京克诺森华地板有限公司 | Ultra-low formaldehyde content fibreboard |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2837066Y (en) * | 2005-09-22 | 2006-11-15 | 南京林业大学 | Bio-material rice or wheat straw shavings/wood fiber composite board |
| US20080171231A1 (en) * | 2006-09-22 | 2008-07-17 | Lopez Richard A | Processes and Manufacturing Methods to Produce an Aqueous Thermosetting Fire-Rated Fire-Retardant Polymeric Adhesive Composition for Manufacturing Interior or Exterior Fire-Rated Cellulosic Products |
| CN102464965A (en) * | 2010-11-03 | 2012-05-23 | 王福华 | Isocyanate adhesive for artificial plate |
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2012
- 2012-12-06 CN CN201210517257.5A patent/CN102975271B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880034A (en) * | 2005-06-13 | 2006-12-20 | 北京克诺森华地板有限公司 | Ultra-low formaldehyde content fibreboard |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
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| Publication number | Publication date |
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| CN102975271A (en) | 2013-03-20 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Baoguo Inventor before: Su Jianli |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151012 Address after: 101111 Beijing Tongzhou District light mechanical and electrical integration industrial base Applicant after: ZIBO ZHENGBANG INTELLECTUAL PROPERTY PLANNING CO., LTD. Address before: 266061 Shandong, Laoshan, Hongkong East Road, No. Pioneering Park, biological park, room 248, No. 239 Applicant before: Qingdao Wenchuang Science & Technology Co., Ltd. |
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Address after: 101100 Duozi Village South, Taihu Town, Tongzhou District, Beijing Patentee after: Jingtai Holding Group Co.,Ltd. Address before: 101111 Beijing Tongzhou District light mechanical and electrical integration industrial base Patentee before: BEIJING SHIJI KINTIG FURNITURE Co.,Ltd. |
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| CP03 | Change of name, title or address |