CN103072157A - Ecological formaldehyde-flee core board - Google Patents
Ecological formaldehyde-flee core board Download PDFInfo
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- CN103072157A CN103072157A CN2012105783668A CN201210578366A CN103072157A CN 103072157 A CN103072157 A CN 103072157A CN 2012105783668 A CN2012105783668 A CN 2012105783668A CN 201210578366 A CN201210578366 A CN 201210578366A CN 103072157 A CN103072157 A CN 103072157A
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Abstract
The invention discloses an ecological formaldehyde-flee core board. The ecological formaldehyde-flee block board is machined by the following machining processes: by utilizing formaldehyde-flee starch emulsion, adding a thickening agent, a filling agent and a reinforcing agent according different proportions on the basis of different requirements in different stages during a core board production process to prepare modified starch adhesive; manufacturing a board core and gluing the board core and a wood veneer to manufacture a pallet board; and finishing the surface of the pallet board by using a decorative veneer to obtain the ecological formaldehyde-flee core board finally. By the ecological formaldehyde-flee core board, the hidden danger that the conventional core board releases formaldehyde is eliminated fundamentally; the living quality of people is improved; and the physical and psychological health of the people is guaranteed.
Description
Technical field
The present invention relates to a kind of core-board, particularly a kind of ecological Formaldehydeless fine wooden board.
Background technology
No matter be in the past, in present or following long period, core-board will be the main material of architecture indoor finishing, furniture making etc.Product sold is mainly produced with urea-formaldehyde resin adhesive in the market, has the core-board of this production can discharge the person, the harmful formaldehyde of living environment.There is enforceable standard in country to product sold, and its burst size of methanal must reach the requirement of regulation.For reaching standard-required, manufacturing enterprise uses and produces by the urea-formaldehyde resin adhesive of modification, the burst size of methanal of core-board is greatly reduced, but this measure can not be eliminated the release of formaldehyde fully, in the situation of relatively large use, the formaldehyde of release is still comparatively serious to the pollution of indoor environment.And, the formaldehyde that urea-formaldehyde resin adhesive discharges, be not only the release of the free formaldehyde that contains itself, Lauxite can decomposite formaldehyde and discharge in addition, because it is a reversible chemical reaction that urea and formolite reaction generate Lauxite, within the long time, can constantly there be formaldehyde to discharge.
In line with the quality of life that improves people, ensure people's physical and mental health, fundamentally eliminate this hidden danger of core-board release formaldehyde, we have applied for patent of invention: " a kind of preparation method of modified starch adhesive for timber (patent No.: ZL201010171082.8) ", and actual according to core-board production, carried out producing with above-mentioned modified starch adhesive the technological development of core-board.
Summary of the invention
The present invention has overcome above-mentioned the deficiencies in the prior art, provides a kind of and has produced ecological, environmental protective without the core-board of aldehyde with modified starch adhesive.
Technical scheme of the present invention is achieved in that
A kind of ecological Formaldehydeless fine wooden board is to adopt following method to prepare:
One, the making of plate core: be made into batten by the China fir small dimension wood by the processing dimension requirement, batten is after drying at side cloth glue, and cloth glue adopts modified starch adhesive, finishes jigsaw and hot-press gluing at plate joggling apparatus again, namely finishes the making of plate core;
The allocation ratio of modified starch adhesive is:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
10 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The process conditions of jigsaw gummed are:
Batten moisture content 14-16%;
Cloth glue amount 400-500g/ opens dimension board;
140-150 ℃ of hot pressing temperatures;
Hot pressing time 5min, plate core thickness: 13～15mm;
From above-mentioned process conditions, can find out, adopt higher hot pressing temperature and short hot pressing time, mainly consider from the operating efficiency that improves plate joggling apparatus.
Two, the making of blanket: by the above-mentioned plate core of making and after the veneer of process cloth glue has carried out assembly, through pre-molding, arrangement repair procedure, obtain blanket through hot press hot pressing again; The process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
16-25 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer; It is the umber that determines adding according to the length of process time;
The process control process conditions:
Raw material moisture content≤16%;
Cloth glue amount 280-320g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 30-120min; According to temperature, weather conditions and decide;
Hot pressing pressure 1.0MPa;
115 ℃ of hot pressing temperatures;
Hot pressing time 8min;
Said process is very large to the quality influence of core-board, and it must guarantee MOR and the dipping stripping performance of product.Reach quality objective, must grasp the preparation of modified starch adhesive, the effect of pre-molding, the technology controlling and process of hot pressing and the control of whole process time; And above-mentioned technological parameter has passed through innovation, has reached perfect technique effect;
Three, the blanket facing is made finished product: by blanket obtained above, through health, fixed thick sanding, cloth glue, with fancy veneer assembly, precompressed, hot pressing, saw limit, sanding operation after namely obtain the ecological Formaldehydeless fine wooden board of finished product, the process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
45 parts of fillers; Filler is flour, calcium carbonate;
20 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The " finishing process condition:
Blanket moisture content≤14%;
Cloth glue amount 200-220g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 15-30min;
Hot pressing pressure 1.0MPa;
110 ℃ of hot pressing temperatures;
Hot pressing time 3min.
The preparation of above-mentioned modified starch emulsion all is according to the patent No.: the method for record makes in " ZL201010171082.8 ".
Adopted the invention has the beneficial effects as follows of technique scheme:
The present invention has utilized the modified starch emulsion without aldehyde, again by the different requirements of different phase in the core-board production process, add tackifier, filler, reinforcing agent in different ratios, carry out the modulation of modified starch adhesive, finally made the core-board without the aldehyde ecological, environmental protective.
The specific embodiment
The specific embodiment of the present invention is as follows:
Embodiment: a kind of ecological Formaldehydeless fine wooden board is to adopt following method to prepare:
Two, the making of plate core: be made into batten by the China fir small dimension wood by the processing dimension requirement, batten is after drying at side cloth glue, and cloth glue adopts modified starch adhesive, finishes jigsaw and hot-press gluing at plate joggling apparatus again, namely finishes the making of plate core;
The allocation ratio of modified starch adhesive is:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
10 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The process conditions of jigsaw gummed are:
Batten moisture content 14-16%;
Cloth glue amount 400-500g/ opens dimension board;
140-150 ℃ of hot pressing temperatures;
Hot pressing time 5min, plate core thickness: 13～15mm;
From above-mentioned process conditions, can find out, adopt higher hot pressing temperature and short hot pressing time, mainly consider from the operating efficiency that improves plate joggling apparatus.
Two, the making of blanket: by the above-mentioned plate core of making and after the veneer of process cloth glue has carried out assembly, through pre-molding, arrangement repair procedure, obtain blanket through hot press hot pressing again; The process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
16-25 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer; It is the umber that determines adding according to the length of process time;
The process control process conditions:
Raw material moisture content≤16%;
Cloth glue amount 280-320g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 30-120min; According to temperature, weather conditions and decide;
Hot pressing pressure 1.0MPa;
115 ℃ of hot pressing temperatures;
Hot pressing time 8min;
Said process is very large to the quality influence of core-board, and it must guarantee MOR and the dipping stripping performance of product.Reach quality objective, must grasp the preparation of modified starch adhesive, the effect of pre-molding, the technology controlling and process of hot pressing and the control of whole process time; And above-mentioned technological parameter has passed through innovation, has reached perfect technique effect;
Three, the blanket facing is made finished product: by blanket obtained above, through health, fixed thick sanding, cloth glue, with fancy veneer assembly, precompressed, hot pressing, saw limit, sanding operation after namely obtain the ecological Formaldehydeless fine wooden board of finished product, the process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
45 parts of fillers; Filler is flour, calcium carbonate;
20 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The " finishing process condition:
Blanket moisture content≤14%;
Cloth glue amount 200-220g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 15-30min;
Hot pressing pressure 1.0MPa;
110 ℃ of hot pressing temperatures;
Hot pressing time 3min.
The preparation of above-mentioned modified starch emulsion all is according to the patent No.: the method for record makes in " ZL201010171082.8 ".
The physicochemical property of product:
1. the detection of physical and mechanical property:
Core-board product by above-mentioned process conditions are produced detects its physical and mechanical property, result such as table 1 by GB/T5849-2006 standard-required.
Table 1.
2. the detection of burst size of methanal:
In the production implementation process of product, the PARA FORMALDEHYDE PRILLS(91,95) burst size has carried out following the tracks of detection, and it the results are shown in Table 2.
Table 2.
| ? | The China fir log | The plate core | Blanket | Production board |
| Burst size of methanal | 0．52mg/L | 0．35mg/L | 0．16mg/L | 0．08mg/L |
As can be seen from Table 2, China fir itself exists the release of formaldehyde, but along with production process be that every burst size of methanal can significantly be descended through a hot pressing, final≤0.1mg/L.We analyze this phenomenon, and reason has two: one, and by hot pressing, formaldehyde has obtained release; The 2nd, contain the compositions such as modified starch, macromolecular compound, isocyanates in our the employed biogum, their energy and formolite reactions, namely modified starch adhesive has the effect of formaldehyde catching agent.
Claims (1)
1. ecological Formaldehydeless fine wooden board is characterized in that adopting following method to prepare:
One, the making of plate core: be made into batten by the China fir small dimension wood by the processing dimension requirement, batten is after drying at side cloth glue, and cloth glue adopts modified starch adhesive, finishes jigsaw and hot-press gluing at plate joggling apparatus again, namely finishes the making of plate core;
The allocation ratio of modified starch adhesive is:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
10 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The process conditions of jigsaw gummed are:
Batten moisture content 14-16%;
Cloth glue amount 400-500g/ opens dimension board;
140-150 ℃ of hot pressing temperatures;
Hot pressing time 5min, plate core thickness: 13～15mm;
Two, the making of blanket: by the above-mentioned plate core of making and after the veneer of process cloth glue has carried out assembly, through pre-molding, arrangement repair procedure, obtain blanket through hot press hot pressing again; The process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions;
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
40 parts of fillers; Filler is flour, calcium carbonate;
1625 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The process control process conditions:
Raw material moisture content≤16%;
Cloth glue amount 280-320g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 30-120min;
Hot pressing pressure 1.0MPa;
115 ℃ of hot pressing temperatures;
Hot pressing time 8min;
Three, the blanket facing is made finished product: by blanket obtained above, through health, fixed thick sanding, cloth glue, with fancy veneer assembly, precompressed, hot pressing, saw limit, sanding operation after namely obtain the ecological Formaldehydeless fine wooden board of finished product, the process conditions of making are as follows:
The configuration proportion of modified starch adhesive:
100 parts of modified starch emulsions
40 parts of tackifier; Tackifier are polyvinyl alcohol, polyvinyl acetate emulsion;
45 parts of fillers; Filler is flour, calcium carbonate;
20 parts of reinforcing agents; Reinforcing agent is the polyisocyanates performed polymer;
The " finishing process condition:
Blanket moisture content≤14%;
Cloth glue amount 200-220g/ square meter is two-sided;
Preload pressure 0.8MPa;
Squeeze time 15-30min;
Hot pressing pressure 1.0MPa;
110 ℃ of hot pressing temperatures;
Hot pressing time 3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578366.8A CN103072157B (en) | 2012-12-26 | 2012-12-26 | A kind of Ecological formaldehyde-flee core board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578366.8A CN103072157B (en) | 2012-12-26 | 2012-12-26 | A kind of Ecological formaldehyde-flee core board |
Publications (2)
| Publication Number | Publication Date |
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| CN103072157A true CN103072157A (en) | 2013-05-01 |
| CN103072157B CN103072157B (en) | 2015-08-26 |
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| CN201210578366.8A Active CN103072157B (en) | 2012-12-26 | 2012-12-26 | A kind of Ecological formaldehyde-flee core board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692506A (en) * | 2013-12-24 | 2014-04-02 | 南京工业大学 | Glue laminated wood member pressurizing preparation process based on air-dried wood density parameters |
| CN103878833A (en) * | 2014-03-27 | 2014-06-25 | 浙江升华云峰新材股份有限公司 | Method for manufacturing recombined bamboo decorative veneers |
| CN104097241A (en) * | 2014-07-03 | 2014-10-15 | 黔西南州宏森木业有限公司 | Low-formaldehyde blockboard processing technology |
| CN106079014A (en) * | 2016-06-27 | 2016-11-09 | 苏州市鼎立包装有限公司 | A kind of stalk is for wooden packing material and preparation method thereof |
| CN107486897A (en) * | 2017-09-09 | 2017-12-19 | 王莉 | A kind of production method of aldehyde-free bamboo floor |
| WO2019000643A1 (en) * | 2017-06-28 | 2019-01-03 | 浙江升华云峰新材股份有限公司 | Starch emulsion-modified urea-formaldehyde resin adhesive, and preparation method therefor and use thereof |
| CN110733084A (en) * | 2019-10-24 | 2020-01-31 | 浙江升华云峰新材股份有限公司 | formaldehyde-free joinery board core and preparation method thereof |
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| US20050136276A1 (en) * | 2003-12-23 | 2005-06-23 | Dynea Overlays, Inc. | Synthetic crossband |
| CN101544003A (en) * | 2008-07-31 | 2009-09-30 | 通辽市锦秀木业有限公司 | Processing production technology of blockboard |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692506A (en) * | 2013-12-24 | 2014-04-02 | 南京工业大学 | Glue laminated wood member pressurizing preparation process based on air-dried wood density parameters |
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| CN103878833A (en) * | 2014-03-27 | 2014-06-25 | 浙江升华云峰新材股份有限公司 | Method for manufacturing recombined bamboo decorative veneers |
| CN103878833B (en) * | 2014-03-27 | 2016-06-08 | 浙江升华云峰新材股份有限公司 | The manufacture method of a kind of bamboo fancy veneer of recombinating |
| CN104097241A (en) * | 2014-07-03 | 2014-10-15 | 黔西南州宏森木业有限公司 | Low-formaldehyde blockboard processing technology |
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| CN106079014A (en) * | 2016-06-27 | 2016-11-09 | 苏州市鼎立包装有限公司 | A kind of stalk is for wooden packing material and preparation method thereof |
| WO2019000643A1 (en) * | 2017-06-28 | 2019-01-03 | 浙江升华云峰新材股份有限公司 | Starch emulsion-modified urea-formaldehyde resin adhesive, and preparation method therefor and use thereof |
| CN107486897A (en) * | 2017-09-09 | 2017-12-19 | 王莉 | A kind of production method of aldehyde-free bamboo floor |
| CN110733084A (en) * | 2019-10-24 | 2020-01-31 | 浙江升华云峰新材股份有限公司 | formaldehyde-free joinery board core and preparation method thereof |
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| CN103072157B (en) | 2015-08-26 |
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