CN101696348B - Urea resin adhesive capable of removing formaldehyde - Google Patents
Urea resin adhesive capable of removing formaldehyde Download PDFInfo
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- CN101696348B CN101696348B CN2009101532508A CN200910153250A CN101696348B CN 101696348 B CN101696348 B CN 101696348B CN 2009101532508 A CN2009101532508 A CN 2009101532508A CN 200910153250 A CN200910153250 A CN 200910153250A CN 101696348 B CN101696348 B CN 101696348B
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- formaldehyde
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- urea
- resin adhesive
- formaldehyde resin
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Abstract
The invention relates to a urea resin adhesive capable of removing formaldehyde, comprising the following components in part by weight: 100 parts of modified urea resin, 1-5 parts of nano titania, 2-8 parts of tourmaline powder and 0.1-0.5 part of cupric hydroxide. The urea resin adhesive can effectively remove the formaldehyde, minimize the release amount of the formaldehyde when in use, adsorb the off-flavor in the air and has certain health care function.
Description
(1) technical field
The present invention relates to a kind of tackiness agent, particularly relate to a kind of urea-formaldehyde resin adhesive of eliminating formaldehyde.
(2) background technology
Tackiness agent is the indispensable a kind of material of modern industry and national defense industry, and wherein timber sticks with glue agent and accounts for more than 60% of tackiness agent ultimate production, and along with the sustainable development consumption of wood processing industry increases day by day, kind also is on the increase.After country's promulgation " interior architecture finishing material limits of harmful substances " 10 compulsory standards, environmental protection has become the hot issue of adhesive industry.To prevent that Cure of Sick Building Syndrome from being that the requirement from living environment of representative is the maximum problem of current adhesive industry.Though its pathogenic factor is not clear and definite as yet, possibly be formaldehyde, organic solvent or softening agent etc. causes, therefore to the condensation that contains formaldehyde be tackiness agent, the tackiness agent etc. that contains volatile organic compounds (VOC) takes some countermeasures extremely urgent.In the face of the more and more stricter environmental requirement in market, development is all actively being sought by each tackiness agent manufacturing enterprise, and green technology and product thereby become is much sought after, and develops low toxicity and nontoxic environmental-protection type adhesive and become international mainstream.
Urea-formaldehyde resin solidifies colourless, the good operation performance of glue-line, and raw materials cost is cheap, is the maximum tackiness agent of timber industry usage quantity.Its technological breakthrough each time all will be created huge economic benefit.But with traditional urea-formaldehyde resin adhesive finished timber ubiquity two large problems: the one, the formaldehyde gas contaminate environment that sheet material discharges; Formaldehyde is very strong to the toxicity of people and warm-blooded animal; If human long-term drinking can be caused giddy, anaemia and various nervous system disorders by the water source that formaldehyde pollutes.The removal of formaldehyde research becomes the focus that people pay close attention in the relevant urea-formaldehyde resin adhesive.The 2nd, poor performance such as water tolerance, especially resistance to boiling water is poor, makes the application of urea-formaldehyde resin adhesive receive considerable restraint.
The reason of release formaldehyde mainly contains lingering section free formaldehyde in the urea-formaldehyde resin, the synthetic middle formaldehyde of resin and urea reaction and generates unsettled methylene ether link, in hot pressing and use, decomposes the slow degraded of the resin that discharges after solidifying in formaldehyde and the sheet material and disengages formaldehyde.At present, business-like removal formaldehyde means have two kinds of basic skills nothing more than, and the one, physical adsorption, the 2nd, decomposition, otherwise both have both at the same time.Photocatalysis technology is the new indoor pollutant removal technology that development in recent years is got up; It removes the broad research that indoor pollutant formaldehyde has obtained people; But the indoor pollutant mass concentration is lower generally speaking; Photochemical catalysis receives the limitation of surperficial effect of mass transmitting more remarkable, and the contaminant removal efficiency that improves under the indoor low pollutent quality concentration conditions becomes the emphasis that people study.Present popular combines photocatalysis technology with activated carbon technology method; Be to utilize the adsorption function of gac can improve the local mass concentration of hanging down catalyst surface under the pollutent quality concentration conditions; And then efficient is removed in the photochemical catalysis that improves under the indoor low pollutent quality concentration conditions; But because the influence of contaminated thing residence time, the treatment capacity of pollutent is restricted.
(3) summary of the invention
When providing a kind of the use, technical problem to be solved by this invention can eliminate the urea-formaldehyde resin adhesive of formaldehyde.
A kind of urea-formaldehyde resin adhesive of eliminating formaldehyde comprises following components by part by weight:
100 parts of modified urea-formaldehyde resins;
1～5 part of nano titanium oxide;
2～8 parts of tourmaline powders;
0.1～0.5 part of oxygen cupric oxide.
Preferably, described tackiness agent is made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
3 parts of nano titanium oxides;
5 parts of tourmaline powders;
0.3 part of oxygen cupric oxide.
Preferred again, described tackiness agent is made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
1～5 part of nano titanium oxide;
2～8 parts of tourmaline powders;
0.1～0.5 part of oxygen cupric oxide;
Germanite powder 5 * 10
5～2 * 10
-4Part.
Preferred again, described tackiness agent is made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
3 parts of nano titanium oxides;
5 parts of tourmaline powders;
0.3 part of oxygen cupric oxide;
Germanite powder 1.5 * 10
-4Part.
Modified urea-formaldehyde resin is the main component of tackiness agent among the present invention, can obtain through commercial sources.
Why can eliminate formaldehyde when urea-formaldehyde resin adhesive of the present invention uses and be based on the light catalytic purifying principle, light catalytic purifying is based on redox ability that photocatalyst has and the method for purifying contaminated thing under uviolizing, TiO
2Band-gap energy be 3.0～3.2eV, be equivalent to the energy that wavelength is the photon of 387.5nm.In the water and air system, surpass the rayed TiO of its energy gap when energy
2During the surface, the electronics that is in valence band will be excited to conduction band, on valence band and conduction band, produces light induced electron (e-) and hole (+) that high reactivity moves freely respectively.Nano level dispersive TiO
2Electronics, hole that optical excitation produces can be moved to the surface rapidly internally, and there is strong oxidizing property in the hole, can be with TiO
2The hydroxyl (OH-) and the water (H on surface
2O) be oxidized to hydroxyl radical free radical (OH); Conduction band electron has strong reducing property, by TiO
2The dissolved oxygen on surface is captured and is formed ultra-oxygen anion free radical; The part ultra-oxygen anion free radical can continue to generate (OH) through Kettenreaktion; The ultra-oxygen anion free radical and the OH that generate have strong oxidisability, can attack the unsaturated link(age) of pollutent, or the extraction Wasserstoffatoms produces new radical; Excite Kettenreaktion, thereby have the effect of environment purification.
Though characteristics such as photocatalytic method has efficiently, degree of depth degraded and non-secondary pollution, its its widespread use also receive the restriction of problem such as immobilized supported, that excitation light wave is too narrow, poor effect during practical application.In order further to improve its catalysis characteristics, strengthen the absorption of PARA FORMALDEHYDE PRILLS(91,95), this project has added tourmalinite/verditer promotor, makes TiO
2Photocatalytic activity improves greatly.
Tourmalinite has permanent spontaneous electrode; The water molecules of its surface field in can ionized air can discharge negative oxygen ion, makes OH-and water molecules after the electrolysis form air negative oxgyen ion; Negative oxygen ion can purify air; Negative oxygen ion has the metabolism of the human body of promotion simultaneously, flu-prevention, enhances human body resistibility and the effect of recovering total balance of the body.
When the granularity of tourmalinite was certain value, tourmalinite can be dispersed in TiO
2In the particulate bunch, do not interfere with or disturb each other mutually between tourmaline particle, can make the electric polarity of single particle tourmalinite be able to independently exist and give full play to its electrode promoter action like this.Tourmalinite has weak electric field, and this weak electric field can suppress the compound of electronics, hole, promotes photochemical catalytic oxidation, increases the absorption of PARA FORMALDEHYDE PRILLS(91,95); Tourmalinite contains transition metal ion, and the present invention added the verditer promotor in addition, then can produce electronics at excitation light irradiation, the hole is right, promotes the OH free-radical generating, the same TiO of the generation of this radical
2The photochemical catalysis activation effect is the same, and is favourable to oxidation of formaldehyde.And the adding of tourmalinite makes TiO
2Material does not still all play the effect that strengthens OH intensity under the illumination condition under illumination, tourmalinite can promote TiO
2The more OH of material production, oxidation of organic compounds shows as significantly improving of ultraviolet catalytic performance more effectively, thereby has strengthened the oxidation removal of its PARA FORMALDEHYDE PRILLS(91,95) greatly.
Germanite mainly plays nourishing function to human body in the present invention.The major function of germanite is:
1, it has dehydrogenation enriched in oxygen function, can make physical efficiency keep competent oxygen, thereby safeguards the health of human body;
2, with respect to other concerning human body beneficial's ore, germanite has a certain amount of relatively radiation of trace, when the short period of time uses human body is had good treatment physiotherapy function;
3, clinical study is found, is approved extensively that by people germanium has the good curing effect to multiple disease at present.Be mainly reflected in: antitumor, treatment senile dementia, raise immunity, delay senility, prevent and treat aspects such as arteriosclerosis, blood viscosity lowering, resisting rheumatoid disease sacroiliitis, endocrine regulation, analgesic antiphlogistic, hypotensive, treatment osteoporosis, endocrine regulation, treatment chronic hepatitis.Germanite has cooling blood for hemostasis in addition to human body, stopping nausea and vomiting by lowering the adverse flow of QI, the effectiveness of the flat liver that relieves inflammation or internal heat; Its principle and other iron-bearing mineral medicine; Similar like magnetite, medical angle therefrom, the contact nature mineral can replenish insufficient element of human body and trace element; Absorb or drain superfluous element and micro element, make human body keep one distinctive just between value.
Urea-formaldehyde resin adhesive of the present invention can effectively be removed formaldehyde, and burst size of methanal was extremely low when tackiness agent used, the peculiar smell in the ability absorbed air, and certain nourishing function is arranged.
(4) embodiment
Through accompanying drawing and specific embodiment technical scheme of the present invention is done preferably below and described in detail.
Embodiment 1
A kind of urea-formaldehyde resin adhesive of eliminating formaldehyde, form by following components by part by weight:
Modified urea-formaldehyde resin 100Kg;
Nano titanium oxide 3Kg;
Tourmaline powder 5Kg;
Oxygen cupric oxide 0.3Kg.
Embodiment 2
A kind of urea-formaldehyde resin adhesive of eliminating formaldehyde, form by following components by part by weight:
Modified urea-formaldehyde resin 100Kg;
Nano titanium oxide 3Kg;
Tourmaline powder 7Kg;
Oxygen cupric oxide 0.2Kg.
Embodiment 3
A kind of urea-formaldehyde resin adhesive of eliminating formaldehyde, form by following components by part by weight:
Modified urea-formaldehyde resin 100Kg;
Nano titanium oxide 3Kg;
Tourmaline powder 5Kg;
Oxygen cupric oxide 0.3Kg;
Germanite powder 1.5 * 10
-4Kg.
The test of embodiment 4 burst size of methanal
The tackiness agent of independent modified urea-formaldehyde resin adhesive, modified urea-formaldehyde resin adhesive+nano titanium oxide (weight ratio 100: 3) and the embodiment of the invention 1 is respectively applied on the bamboo interior door; Carry out burst size of methanal and detect contrast by GB18580-2001 " formaldehyde discharges and limits the quantity of in indoor decorating material wood-based plate and the goods thereof " climate box method, detected result is as shown in table 1 below:
Table 1
| Project | Standard-required | Modified urea-formaldehyde resin | Modified urea-formaldehyde resin+nano titanium oxide | The tackiness agent of embodiment 1 |
| Burst size of methanal E1 (mg/m 3) | ≤0.12 | 0.10 | ?0.08 | ?0.01 |
Can find out that by table 1 simple use titanium oxide is removed formaldehyde effect and not really desirable, and the present invention adds tackiness agent behind the promotor and has obtained and especially significantly remove the formaldehyde effect.
Should be noted that at last the above is merely one embodiment of the present of invention; Rather than be used for limiting practical range of the present invention; Every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention are claim scope of the present invention and cover.
Claims (4)
1. the urea-formaldehyde resin adhesive that can eliminate formaldehyde is characterized in that comprising following components by part by weight:
100 parts of modified urea-formaldehyde resins;
1～5 part of nano titanium oxide;
2～8 parts of tourmaline powders;
0.1～0.5 part of verditer.
2. the urea-formaldehyde resin adhesive of eliminating formaldehyde according to claim 1 is characterized in that being made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
3 parts of nano titanium oxides;
5 parts of tourmaline powders;
0.3 part of verditer.
3. the urea-formaldehyde resin adhesive of eliminating formaldehyde according to claim 1 is characterized in that being made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
1～5 part of nano titanium oxide;
2～8 parts of tourmaline powders;
0.1～0.5 part of verditer;
Germanite powder 5 * 10
-5～2 * 10
-4Part.
4. the urea-formaldehyde resin adhesive of eliminating formaldehyde according to claim 1 is characterized in that being made up of following components by part by weight:
100 parts of modified urea-formaldehyde resins;
3 parts of nano titanium oxides;
5 parts of tourmaline powders;
0.3 part of verditer;
Germanite powder 1.5 * 10
-4Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101532508A CN101696348B (en) | 2009-10-29 | 2009-10-29 | Urea resin adhesive capable of removing formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101532508A CN101696348B (en) | 2009-10-29 | 2009-10-29 | Urea resin adhesive capable of removing formaldehyde |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101696348A CN101696348A (en) | 2010-04-21 |
| CN101696348B true CN101696348B (en) | 2012-08-22 |
Family
ID=42141479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101532508A Expired - Fee Related CN101696348B (en) | 2009-10-29 | 2009-10-29 | Urea resin adhesive capable of removing formaldehyde |
Country Status (1)
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113836B (en) * | 2013-03-09 | 2015-08-12 | 谭志刚 | A kind of white glue with vinyl additive and preparation method thereof |
| CN103113835B (en) * | 2013-03-09 | 2015-08-12 | 谭志刚 | Properties-correcting agent of a kind of efficient elimination free formaldehyde and preparation method thereof |
| CN103909550B (en) * | 2014-04-18 | 2015-11-18 | 德华兔宝宝装饰新材股份有限公司 | A kind of anion function health sheet material and manufacture method thereof |
| CN104277748B (en) * | 2014-10-31 | 2015-11-11 | 浙江红高梁木业有限公司 | A kind of resistant to elevated temperatures timber floor nano adhesive and preparation method thereof |
| CN106738115B (en) * | 2016-11-29 | 2019-03-29 | 山东安信木业有限公司 | A kind of anticorrosive mildewproof environment-friendly plywood and preparation method thereof |
| CN107698191A (en) * | 2017-10-30 | 2018-02-16 | 汪涛 | For removing the spray coating liquor of formaldehyde |
| CN109651576A (en) * | 2019-02-18 | 2019-04-19 | 贵州中宝装饰材料有限公司 | Compound and application preparation of the tourmaline in Lauxite |
| CN113072903B (en) * | 2021-04-25 | 2023-03-17 | 黑龙江大学 | Preparation method of decorative wood board waterproof adhesive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3994850A (en) * | 1976-01-05 | 1976-11-30 | Champion International Corporation | Modified urea-formaldehyde resin adhesive |
| CN1961989A (en) * | 2006-11-24 | 2007-05-16 | 张日龙 | Far infrared magnetic patch for physical therapy and production method thereof |
| CN101176795A (en) * | 2007-12-07 | 2008-05-14 | 北京林业大学 | Elimination agent of unwanted volatile and preparation method thereof |
-
2009
- 2009-10-29 CN CN2009101532508A patent/CN101696348B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3994850A (en) * | 1976-01-05 | 1976-11-30 | Champion International Corporation | Modified urea-formaldehyde resin adhesive |
| CN1961989A (en) * | 2006-11-24 | 2007-05-16 | 张日龙 | Far infrared magnetic patch for physical therapy and production method thereof |
| CN101176795A (en) * | 2007-12-07 | 2008-05-14 | 北京林业大学 | Elimination agent of unwanted volatile and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 尹荔松等."二氧化钛催化研究进展及应用".《材料导报》.2000,第14卷(第12期),23-25. |
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| CN101696348A (en) | 2010-04-21 |
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