CN109401667A - A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard - Google Patents
A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard Download PDFInfo
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- CN109401667A CN109401667A CN201811454621.1A CN201811454621A CN109401667A CN 109401667 A CN109401667 A CN 109401667A CN 201811454621 A CN201811454621 A CN 201811454621A CN 109401667 A CN109401667 A CN 109401667A
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- China
- Prior art keywords
- reducing agent
- formaldehyde reducing
- formaldehyde
- fiberboard
- component
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention belongs to wood-based plate auxiliary material technical fields, are related to a kind of formaldehyde reducing agent.Presently disclosed formaldehyde reducing agent includes: to drop aldehyde component 20~40%, enhancer component 1~10%, Yu Weishui by weight percent, and the drop aldehyde group is divided into one or more of urea, sodium pyrosulfite, isothiazolinone, acrylamide, Boratex；The enhancer component is one or more of disodium hydrogen phosphate, sodium dihydrogen phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium acetate, dimethylethanolamine.In the sizing process of low formaldehyde emission fiberboard, muf resin, the formaldehyde reducing agent are mixed by static mixer, before being pumped into the blow-off valve of defibrator through defeated glue together with curing agent, spray atomization glue.Formaldehyde reducing agent disclosed in this invention is using E1Grade glue production E0It is appropriate to add when grade or F4 star fiberboard or even the lower fiberboard of burst size of methanal, on plate property there are few influence, and applying mode simple possible, it has been applied to industrialized production.
Description
Technical field
The invention belongs to wood-based plate auxiliary material technical field, be related to formaldehyde reducing agent more particularly to a kind of formaldehyde reducing agent and its preparation method and
Production applied to low burst size of methanal fiberboard.
Background technique
Current manufacturing lines produce low burst size of methanal fiberboard, and there are mainly three types of methods: 1. using the melamine of low mole prop0rtion
Amine modified urea-formaldehyde resin (hereinafter referred to as muf resin)；2. using the relatively high muf resin of part molar ratio, while adding suitable
Measure isocyanates；3. using the muf resin of high molar ratio, a certain amount of formaldehyde reducing agent is added.
For first method, muf resin molar ratio can only be suitably reduced, therefore burst size of methanal reduces amplitude and also has
Limit, molar ratio reduction will affect glue curing effect too much, to influence plate property；For second method, need to add
A small amount of release agent, and isocyanates price is high, increased costs are more；For the third method, in the market many formaldehyde reducing agent meetings
Plate property is influenced, while burst size of methanal declines, there are many plate property decline, can not produce qualified plate.
To the qualified plate of production, it is necessary to improve melamine amount or resin added in muf resin, increased costs compared with
It is more.The present invention uses E commonly used in the trade by adding the formaldehyde reducing agent of environment-friendly high-efficiency a kind of1Grade muf resin glue, can produce E0 grades
Or F4 star or even the lower plate of burst size of methanal, plate property is had little effect, can guarantee plate property, it is raw
Produce qualified plate.
Summary of the invention
In order to solve prior art problem, the invention discloses a kind of formaldehyde reducing agent and its preparation method and it is applied to low formaldehyde emission
Measure the production of fiberboard.
It is an object of the invention to disclose a kind of formaldehyde reducing agent of environment-friendly high-efficiency.
A kind of formaldehyde reducing agent includes: drop aldehyde component 20~40%, enhancer component 1~10%, Yu Wei by weight percent
Water, wherein the drop aldehyde group is divided into one of urea, sodium pyrosulfite, isothiazolinone, acrylamide, Boratex or several
Kind；The enhancer component is disodium hydrogen phosphate, sodium dihydrogen phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium acetate, dimethyl
One or more of ethanol amine.
In the more excellent disclosed example of the present invention, the drop aldehyde group is divided into sodium pyrosulfite, urea and isothiazolinone, three's mass
Than for 2:1:2.
In the more excellent disclosed example of the present invention, the enhancer component is disodium hydrogen phosphate, sodium dihydrogen phosphate, dimethyl ethanol
Amine, three's mass ratio are 1:1:1.
Another object of the present invention discloses the preparation method of above-mentioned formaldehyde reducing agent.
The method for preparing above-mentioned formaldehyde reducing agent: drop aldehyde component is added first into reaction kettle, water is then added, stirs；Test
Solution ph in reaction kettle adds enhancer component according to pH value, so that finished product formaldehyde reducing agent pH value is between 5.5~6.5.
A further object of the invention is, discloses the application of the formaldehyde reducing agent, i.e., in low formaldehyde emission fiberboard
It is glued in process, muf resin, formaldehyde reducing agent is mixed by static mixer, are pumped into defibrator through defeated glue together with curing agent
Blow-off valve before, spray atomization glue so that fiber with adhesive is full and uniform mixes.
Wherein, the applied amount of the formaldehyde reducing agent is the 1~7.8% of muf resin quality, preferably 4.6%；
The curing agent is 25% ammonium sulfate solution, and applied amount is the 2~5% of muf resin quality, preferably 3.85%.
Beneficial effect
The invention discloses a kind of formaldehyde reducing agents of environment-friendly high-efficiency, are using E0 grades of E1 grades of glue productions or F4 star fiber
When plate or even the lower fiberboard of burst size of methanal, is added in right amount, plate property is had little effect, it is ensured that plate
Material performance, and applying mode simple possible are suitable for industrialized production, have taken into account plate property and cost, overcome current life
The defect of producing line production low burst size of methanal fiberboard.
Specific embodiment
The following describes the present invention in detail with reference to examples, so that those skilled in the art more fully understand this hair
It is bright, but the invention is not limited to following embodiments.
Embodiment 1
Every cubic metre of dosage of raw material of the present embodiment includes: timber 2.1t, E1 grades of muf resin 220kg, formaldehyde reducing agent 3kg, stone
Wax 6.5kg, curing agent 1.5kg.
Formaldehyde reducing agent raw material and parts by weight include: drop aldehyde component 30%, enhancer component 10%, water 60%.
Wherein drop aldehyde component is made of sodium pyrosulfite, urea and isothiazolinone, proportions 2:1:2；Reinforcing agent
Component is made of disodium hydrogen phosphate, sodium dihydrogen phosphate, dimethylethanolamine, proportions 1:1:1.
Then qualified fiber is made by procedure for preparation and heat mill process for brush wood；
It is then passed through sizing process, muf resin, formaldehyde reducing agent, curing agent are uniformly applied in fiber；
Most afterwards through processes such as drying, molding, hot pressing, cooling, cutting edge, sandings, production board one is made.
1 production board of table, one detection data
Embodiment 2
Every cubic metre of dosage of raw material of the present embodiment includes: timber 2.0t, E1 grades of muf resin 220kg, formaldehyde reducing agent 9kg, stone
Wax 7kg, curing agent 1.5kg.
Formaldehyde reducing agent raw material and parts by weight include: drop aldehyde component 35%, enhancer component 7%, water 55%.
Wherein drop aldehyde component is made of sodium pyrosulfite, isothiazolinone, acrylic acid, proportions 1:1:1；Reinforcing agent
Component is made of diammonium hydrogen phosphate, phosphoric acid dihydro amine, dimethylethanolamine, proportions 1:1:1.
Then qualified fiber is made by procedure for preparation and heat mill process for brush wood；
It is then passed through sizing process, muf resin, formaldehyde reducing agent, curing agent are uniformly applied in fiber；
Most afterwards through processes such as drying, molding, hot pressing, cooling, cutting edge, sandings, production board two is made.
2 production board of table, two detection data
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (9)
1. a kind of formaldehyde reducing agent includes: to drop aldehyde component 20~40% by weight percent, enhancer component 1~10%, Yu Weishui,
Be characterized in that: the drop aldehyde group is divided into one of urea, sodium pyrosulfite, isothiazolinone, acrylamide, Boratex or several
Kind；The enhancer component is disodium hydrogen phosphate, sodium dihydrogen phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium acetate, dimethyl
One or more of ethanol amine.
2. formaldehyde reducing agent according to claim 1, it is characterised in that: the drop aldehyde group is divided into sodium pyrosulfite, urea and different thiophene
Oxazoline ketone, three's mass ratio are 2:1:2.
3. formaldehyde reducing agent according to claim 1, it is characterised in that: the enhancer component is disodium hydrogen phosphate, biphosphate
Sodium, dimethylethanolamine, three's mass ratio are 1:1:1.
4. the method for producing the formaldehyde reducing agent as described in the claims 1-3 is any, it is characterised in that: be added first into reaction kettle
Aldehyde component is dropped, water is then added, is stirred；Solution ph in test reaction kettle adds enhancer component according to pH value, so that finished product
Formaldehyde reducing agent pH value is between 5.5~6.5.
5. a kind of application of the formaldehyde reducing agent as described in the claims 1-3 is any, it is characterised in that: in low formaldehyde emission fiberboard
Sizing process in, by muf resin, formaldehyde reducing agent by static mixer mix, be pumped into defibrator process through defeated glue together with curing agent
Before the blow-off valve of machine, spray atomization glue so that fiber with adhesive is full and uniform mixes.
6. the application of formaldehyde reducing agent according to claim 5, it is characterised in that: the applied amount of the formaldehyde reducing agent is muf resin matter
The 1~7.8% of amount.
7. the application of formaldehyde reducing agent according to claim 6, it is characterised in that: the applied amount of the formaldehyde reducing agent is muf resin matter
The 4.6% of amount.
8. the application of formaldehyde reducing agent according to claim 5, it is characterised in that: the curing agent is 25% ammonium sulfate solution, is applied
Dosage is the 2~5% of muf resin quality.
9. the application of formaldehyde reducing agent according to claim 8, it is characterised in that: the curing agent is 25% ammonium sulfate solution, is applied
Dosage is the 3.85% of muf resin quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454621.1A CN109401667A (en) | 2018-11-30 | 2018-11-30 | A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454621.1A CN109401667A (en) | 2018-11-30 | 2018-11-30 | A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard |
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| Publication Number | Publication Date |
|---|---|
| CN109401667A true CN109401667A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811454621.1A Pending CN109401667A (en) | 2018-11-30 | 2018-11-30 | A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101874918A (en) * | 2009-04-28 | 2010-11-03 | 上海旗洲环保科技发展有限公司 | Novel efficient formaldehyde scavenger |
| CN102066516A (en) * | 2008-06-27 | 2011-05-18 | 株式会社大鹿 | Formaldehyde scavenger and wood material using same |
| CN102921276A (en) * | 2012-11-12 | 2013-02-13 | 刘乐鑫 | Formaldehyde remover |
| US20130240114A1 (en) * | 2012-03-13 | 2013-09-19 | Georgia-Pacific Chemicals Llc | Adhesive compositions having a reduced cure time and methods for making and using same |
| CN108393998A (en) * | 2018-03-16 | 2018-08-14 | 广东始兴县华洲木业有限公司 | A kind of application of efficient and environment-friendly type artificial board formaldehyde agent for capturing in particieboard production |
| CN108853866A (en) * | 2018-06-14 | 2018-11-23 | 赵文应 | A kind of formaldehyde scavenger and its application |
-
2018
- 2018-11-30 CN CN201811454621.1A patent/CN109401667A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102066516A (en) * | 2008-06-27 | 2011-05-18 | 株式会社大鹿 | Formaldehyde scavenger and wood material using same |
| CN101874918A (en) * | 2009-04-28 | 2010-11-03 | 上海旗洲环保科技发展有限公司 | Novel efficient formaldehyde scavenger |
| US20130240114A1 (en) * | 2012-03-13 | 2013-09-19 | Georgia-Pacific Chemicals Llc | Adhesive compositions having a reduced cure time and methods for making and using same |
| CN102921276A (en) * | 2012-11-12 | 2013-02-13 | 刘乐鑫 | Formaldehyde remover |
| CN108393998A (en) * | 2018-03-16 | 2018-08-14 | 广东始兴县华洲木业有限公司 | A kind of application of efficient and environment-friendly type artificial board formaldehyde agent for capturing in particieboard production |
| CN108853866A (en) * | 2018-06-14 | 2018-11-23 | 赵文应 | A kind of formaldehyde scavenger and its application |
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Application publication date: 20190301 |
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