CN105368343A - Water resistant modified starch-based wood adhesive and preparation method thereof - Google Patents
Water resistant modified starch-based wood adhesive and preparation method thereof Download PDFInfo
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- CN105368343A CN105368343A CN201510800331.8A CN201510800331A CN105368343A CN 105368343 A CN105368343 A CN 105368343A CN 201510800331 A CN201510800331 A CN 201510800331A CN 105368343 A CN105368343 A CN 105368343A
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Abstract
The present invention discloses a water resistant modified starch-based wood adhesive comprising the following raw materials in parts by weight: 40 to 50 parts of starch, 1 to 3 parts of a mineral acid, 0.1 to 1% of glucoamylase, 3 to 6 parts of sodium hydroxide, 0.01 to 1 part of sodium sulfate, 3 to 5 parts of an oxidizer, 80 to 90 parts of formaldehyde, 30 to 40 parts of urea, 4 to 6 parts of ammonium chloride, 0.5 to 2 parts of sodium dodecyl sulfonate and 3 to 10 parts titanium dioxide nanoparticles. The main component starch is rich in sources and low in price, the modified starch-based wood adhesive has good liquidity, strong adhesion, good water resistance, a certain degree of acid and alkali resistance, good stability and long storage time, and can be widely used in wood decoration, artificial board and plywood bonding and other aspects.
Description
Technical field
The present invention relates to tackiness agent and preparation field thereof, be specifically related to a kind of water-fast treated starch base timber adhesive and preparation method thereof.
Background technology
Starch have renewable, pollution-free, cost is low, the advantage such as biodegradable, utilize starch to prepare as main raw material the consumption that Wood Adhesive can reduce Nonrenewable resources oil monomer greatly, and reduce costs.There is the shortcomings such as rate of drying is slow, bonding strength is low, poor water resistance in traditional amylan, needs to carry out modification to it.Tradition tackiness agent in containing formaldehydes tackiness agent due to its price suitable; technical maturity and be widely used in wood processing industry; but because wherein formaldehyde content is higher; the health of release to environment and workman of tackiness agent Free Aldehyde all forms very large threat; free formaldehyde is classified as No.1 source of pollution by U.S. environment and Conservation Board, and the content how reduced in formaldehyde becomes the problem of research.Proposing a kind of employing starch in patent ZL200510040113.5 " a kind of preparation method of starch glue for lumber " is main raw material, carries out acidolysis, oxidation, grafting, copolymerization and modification process, finally adds the technique that amylan prepared by certain auxiliary agent.The amylan that this technique is prepared has the advantages such as with low cost, environmental protection, but its bonding strength, water tolerance are to be further improved in addition, to expand its application further.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of water-fast treated starch base timber adhesive, there is satisfactory stability, bonding strength and water tolerance, and reduce free formaldehyde content.
For realizing above object, the present invention is achieved by the following technical programs:
A kind of water-fast treated starch base timber adhesive, is made up of the raw material of following weight part: starch 40 ~ 50 parts, mineral acid 1 ~ 3 part, 0.1 ~ 1 part, saccharifying enzyme, 3 ~ 6 parts, sodium hydroxide, 0.01 ~ 1 part, sodium sulfate, 3 ~ 5 parts, oxygenant, 80 ~ 90 parts, formaldehyde, 30 ~ 40 parts, urea, ammonium chloride 4 ~ 6 parts, sodium laurylsulfonate 0.5 ~ 2 part, titanium dioxide nano-particle 3-10 part.
The preparation method of water-fast treated starch base timber adhesive, is made up of following steps:
1), with water starch is mixed with the starch slurry that mass concentration is 30 ~ 45%, transfers in reactor;
2), add inorganic acid solution and be hydrolyzed 1 ~ 2 hour, stir, hydrolysis temperature is 55 ~ 65 DEG C, is cooled to room temperature, with sodium hydroxide solution, pH value is adjusted to 6.0 ~ 6.5 after reaction terminates;
3), adding saccharifying enzyme carries out saccharification, temperature of reaction 70-90 DEG C, reaction 0.5-1h;
4), add sodium sulfate and oxygenant, react after 10 ~ 50 minutes, drip sodium hydroxide solution while stirring, adjust ph 9.0-10.0;
5), the starch slurry after oxidation be warmed up to 85 ~ 95 DEG C, be incubated 15 ~ 25 minutes, obtained modified starch adhesive;
6), by formaldehyde add reactor, by sodium hydroxide solution adjust ph to 8, add urea and ammonium chloride, be rapidly heated to 95-97 DEG C, react about 30min, stir evenly, when temperature recovery is to 95-97 DEG C, add sodium laurylsulfonate and titanium dioxide nano-particle, pH value is adjusted to 4.5-5.5, continue heating, until take out in several reactant instillation clear water, beading sinks and without till during mist, with sodium hydroxide solution adjust pH to 8-9, reheats 5min.
Preferably, described starch is one or several mixture in W-Gum, wheat starch, yam starch, sweet potato starch.
Preferably, described oxygenant is hydrogen peroxide, clorox or potassium permanganate.
Preferably, described mineral acid is hydrochloric acid or sulfuric acid.
Preferably, described titanium dioxide nano-particle diameter is 10-20nm.
Beneficial effect of the present invention: in the present invention, main ingredient starch source enriches, cheap, through treated starch base timber adhesive good fluidity, cementability is strong, water-tolerant, there is certain resistance to acids and bases, reduce free formaldehyde content, and nano titanium oxide nanoparticle has satisfactory stability, its small-size effect had and high-ratio surface effect can form good network structure with latex particle, reduce the destruction of water molecules to tackiness agent to a great extent, improve the rate of drying of tackiness agent, intensity and water tolerance, and good stability, storage time is long, the decoration of timber can be widely used in, wood-based plate, the aspect such as bonding of glued board.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
A kind of water-fast treated starch base timber adhesive, is made up of the raw material of following weight part: W-Gum 40 parts, hydrochloric acid 1 part, 0.1 part, saccharifying enzyme, 3 parts, sodium hydroxide, 0.01 part, sodium sulfate, 5 parts, hydrogen peroxide, 90 parts, formaldehyde, 40 parts, urea, ammonium chloride 6 parts, sodium laurylsulfonate 2 parts, titanium dioxide nano-particle 10 parts.
The preparation method of water-fast treated starch base timber adhesive, is made up of following steps:
1), with water W-Gum is mixed with the corn starch liquid that mass concentration is 30 ~ 45%, transfers in reactor;
2), add hydrochloric acid soln and be hydrolyzed 1 ~ 2 hour, stir, hydrolysis temperature is 55 ~ 65 DEG C, is cooled to room temperature, with sodium hydroxide solution, pH value is adjusted to 6.0 ~ 6.5 after reaction terminates;
3), adding saccharifying enzyme carries out saccharification, temperature of reaction 70-90 DEG C, reaction 0.5-1h;
4), add metabisulfite solution and hydrogen peroxide, react after 10 ~ 50 minutes, drip sodium hydroxide solution while stirring, adjust ph 9.0-10.0;
5), the starch slurry after oxidation be warmed up to 85 ~ 95 DEG C, be incubated 15 ~ 25 minutes, obtained modified corn starch glue;
6), formaldehyde is added reactor, by sodium hydroxide solution adjust ph to 8, add urea and ammonium chloride, be rapidly heated to 95-97 DEG C, react about 30min, stir evenly, when temperature recovery is to 95-97 DEG C, add sodium laurylsulfonate and particle dia is the titanium dioxide nano-particle of 10-20nm, pH value is adjusted to 4.5-5.5, continue heating, until take out in several reactant instillation clear water, beading sinks and without till during mist, with sodium hydroxide solution adjust pH to 8-9, reheats 5min.
Preferably, described starch is one or several mixture in W-Gum, wheat starch, yam starch, sweet potato starch.
Preferably, described oxygenant is hydrogen peroxide, clorox or potassium permanganate.
Preferably, described mineral acid is hydrochloric acid or sulfuric acid.
Preferably, described titanium dioxide nano-particle diameter is 10-15nm.
Embodiment 2:
A kind of water-fast treated starch base timber adhesive, is made up of the raw material of following weight part: yam starch 50 parts, 3 parts, sulfuric acid, 1 part, saccharifying enzyme, 5 parts, sodium hydroxide, 1 part, sodium sulfate, 3 parts, potassium permanganate, 80 parts, formaldehyde, 30 parts, urea, ammonium chloride 4 parts, sodium laurylsulfonate 0.6 part, titanium dioxide nano-particle 4 parts.
The preparation method of water-fast treated starch base timber adhesive, is made up of following steps:
1), with water yam starch is mixed with the starch slurry that mass concentration is 30 ~ 45%, transfers in reactor;
2), add sulphuric acid soln and be hydrolyzed 1 ~ 2 hour, stir, hydrolysis temperature is 55 ~ 65 DEG C, is cooled to room temperature, with sodium hydroxide solution, pH value is adjusted to 6.0 ~ 6.5 after reaction terminates;
3), adding saccharifying enzyme carries out saccharification, temperature of reaction 70-90 DEG C, reaction 0.5-1h;
4), add metabisulfite solution and potassium permanganate solution, react after 10 ~ 50 minutes, drip sodium hydroxide solution while stirring, adjust ph 9.0-10.0;
5), the starch slurry after oxidation be warmed up to 85 ~ 95 DEG C, be incubated 15 ~ 25 minutes, obtained modified potato starch glue;
6), formaldehyde is added reactor, by sodium hydroxide solution adjust ph to 8, add urea and ammonium chloride, be rapidly heated to 95-97 DEG C, react about 30min, stir evenly, when temperature recovery is to 95-97 DEG C, add sodium laurylsulfonate and particle dia is the titanium dioxide nano-particle of 10-20nm, pH value is adjusted to 4.5-5.5, continue heating, until take out in several reactant instillation clear water, beading sinks and without till during mist, with sodium hydroxide solution adjust pH to 8-9, reheats 5min.
Embodiment 3:
A kind of water-fast treated starch base timber adhesive, is made up of the raw material of following weight part: wheat starch 45 parts, hydrochloric acid 2 parts, 0.5 part, saccharifying enzyme, 5 parts, sodium hydroxide, 0.3 part, sodium sulfate, clorox 4 parts, 82 parts, formaldehyde, 36 parts, urea, ammonium chloride 5 parts, sodium laurylsulfonate 1.2 parts, titanium dioxide nano-particle 7 parts.
The preparation method of water-fast treated starch base timber adhesive, is made up of following steps:
1), with water wheat starch is mixed with the starch slurry that mass concentration is 30 ~ 45%, transfers in reactor;
2), add hydrochloric acid soln and be hydrolyzed 1 ~ 2 hour, stir, hydrolysis temperature is 55 ~ 65 DEG C, is cooled to room temperature, with sodium hydroxide solution, pH value is adjusted to 6.0 ~ 6.5 after reaction terminates;
3), adding saccharifying enzyme carries out saccharification, temperature of reaction 70-90 DEG C, reaction 0.5-1h;
4), add metabisulfite solution and chlorine bleach liquor, react after 10 ~ 50 minutes, drip sodium hydroxide solution while stirring, adjust ph 9.0-10.0;
5), the starch slurry after oxidation be warmed up to 85 ~ 95 DEG C, be incubated 15 ~ 25 minutes, obtained modified wheat starch glue;
6), formaldehyde is added reactor, by sodium hydroxide solution adjust ph to 8, add urea and ammonium chloride, be rapidly heated to 95-97 DEG C, react about 30min, stir evenly, when temperature recovery is to 95-97 DEG C, add sodium laurylsulfonate and particle dia is the titanium dioxide nano-particle of 10-20nm, pH value is adjusted to 4.5-5.5, continue heating, until take out in several reactant instillation clear water, beading sinks and without till during mist, with sodium hydroxide solution adjust pH to 8-9, reheats 5min.
To sum up, the embodiment of the present invention has following beneficial effect: in the present invention, main ingredient starch source is abundant, cheap, through treated starch base timber adhesive good fluidity, cementability is strong, water-tolerant, there is certain resistance to acids and bases, and good stability, the storage time is long, can be widely used in the aspect such as bonding of the decoration of timber, wood-based plate, glued board.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a water-fast treated starch base timber adhesive, it is characterized in that, be made up of the raw material of following weight part: starch 40 ~ 50 parts, mineral acid 1 ~ 3 part, 0.1 ~ 1 part, saccharifying enzyme, 3 ~ 6 parts, sodium hydroxide, 0.01 ~ 1 part, sodium sulfate, 3 ~ 5 parts, oxygenant, 80 ~ 90 parts, formaldehyde, 30 ~ 40 parts, urea, ammonium chloride 4 ~ 6 parts, sodium laurylsulfonate 0.5 ~ 2 part, titanium dioxide nano-particle 3-10 part.
2. a preparation method for water-fast treated starch base timber adhesive as claimed in claim 1, is characterized in that, be made up of following steps:
1), with water starch is mixed with the starch slurry that mass concentration is 30 ~ 45%, transfers in reactor;
2), add inorganic acid solution and be hydrolyzed 1 ~ 2 hour, stir, hydrolysis temperature is 55 ~ 65 DEG C, is cooled to room temperature, with sodium hydroxide solution, pH value is adjusted to 6.0 ~ 6.5 after reaction terminates;
3), adding saccharifying enzyme carries out saccharification, temperature of reaction 70-90 DEG C, reaction 0.5-1h;
4), add sodium sulfate and oxygenant, react after 10 ~ 50 minutes, drip sodium hydroxide solution while stirring, adjust ph 9.0-10.0;
5), the starch slurry after oxidation be warmed up to 85 ~ 95 DEG C, be incubated 15 ~ 25 minutes, obtained modified starch adhesive;
6), by formaldehyde add reactor, by sodium hydroxide solution adjust ph to 8, add urea and ammonium chloride, be rapidly heated to 95-97 DEG C, react about 30min, stir evenly, when temperature recovery is to 95-97 DEG C, add sodium laurylsulfonate and titanium dioxide nano-particle, pH value is adjusted to 4.5-5.5, continue heating, until take out in several reactant instillation clear water, beading sinks and without till during mist, with sodium hydroxide solution adjust pH to 8-9, reheats 5min.
3. water-fast treated starch base timber adhesive as claimed in claim 1 or 2, is characterized in that, described starch is one or several mixture in W-Gum, wheat starch, yam starch, sweet potato starch.
4. water-fast treated starch base timber adhesive as claimed in claim 1 or 2, is characterized in that, described oxygenant is hydrogen peroxide, clorox or potassium permanganate.
5. water-fast treated starch base timber adhesive as claimed in claim 1 or 2, is characterized in that, described mineral acid is hydrochloric acid or sulfuric acid.
6. water-fast treated starch base timber adhesive as claimed in claim 1 or 2, is characterized in that, described titanium dioxide nano-particle diameter is 10-20nm.
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| CN201510800331.8A CN105368343A (en) | 2015-11-18 | 2015-11-18 | Water resistant modified starch-based wood adhesive and preparation method thereof |
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| CN201510800331.8A CN105368343A (en) | 2015-11-18 | 2015-11-18 | Water resistant modified starch-based wood adhesive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106634739A (en) * | 2016-12-17 | 2017-05-10 | 浦北县建业胶合板有限责任公司 | Formaldehyde-free starch adhesive for plywoods and preparation method thereof |
| CN112048246A (en) * | 2020-09-02 | 2020-12-08 | 阜南县锐发工艺品有限公司 | Weather-resistant formaldehyde-free wood adhesive |
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| CN1291632A (en) * | 2000-09-21 | 2001-04-18 | 何卫平 | Low-poison urea-formaldehyde resin adhesive and its preparing process |
| CN102086360A (en) * | 2010-12-07 | 2011-06-08 | 江南大学 | Modified starch-based wood adhesive as well as preparation method and application thereof |
| CN102994030A (en) * | 2012-11-29 | 2013-03-27 | 永港伟方（北京）科技股份有限公司 | Application of starch adhesive and preparation method of urea-formaldehyde resin adhesive |
| CN104119816A (en) * | 2013-04-23 | 2014-10-29 | 无锡阿龙包装印刷有限公司 | Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards |
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2015
- 2015-11-18 CN CN201510800331.8A patent/CN105368343A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291632A (en) * | 2000-09-21 | 2001-04-18 | 何卫平 | Low-poison urea-formaldehyde resin adhesive and its preparing process |
| CN102086360A (en) * | 2010-12-07 | 2011-06-08 | 江南大学 | Modified starch-based wood adhesive as well as preparation method and application thereof |
| CN102994030A (en) * | 2012-11-29 | 2013-03-27 | 永港伟方（北京）科技股份有限公司 | Application of starch adhesive and preparation method of urea-formaldehyde resin adhesive |
| CN104119816A (en) * | 2013-04-23 | 2014-10-29 | 无锡阿龙包装印刷有限公司 | Preparation method for high-strength water-resistant starch adhesive for corrugated paperboards |
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| 于新等: "《米酒米醋加工技术》", 30 June 2014 * |
| 杜连启等: "《甘薯加工技术》", 28 February 2014 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106634739A (en) * | 2016-12-17 | 2017-05-10 | 浦北县建业胶合板有限责任公司 | Formaldehyde-free starch adhesive for plywoods and preparation method thereof |
| CN112048246A (en) * | 2020-09-02 | 2020-12-08 | 阜南县锐发工艺品有限公司 | Weather-resistant formaldehyde-free wood adhesive |
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Application publication date: 20160302 |