CN104893657A - Peanut meal-based formaldehyde-free adhesive and preparation method thereof - Google Patents
Peanut meal-based formaldehyde-free adhesive and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a peanut meal-based formaldehyde-free adhesive and a preparation method thereof. The adhesive comprises the following raw materials by weight: 60 to 70 parts of softening water, 20 to 25 parts of high-temperature expressed peanut meal powder, 0.5 to 2 parts of sodium dodecyl sulfate, 1.5 to 4 parts of a cross-linking reinforcing agent, and 2 to 4 parts of sodium benzoate. The preparation method comprises the following steps: adding the crushed and screened high-temperature expressed peanut meal powder and sodium dodecyl sulfate into a dispersion medium; carrying out stirring till the mixture I is uniform; carrying out modification; cooling down the obtained mixture II to room temperature; adding the cross-linked reinforcing agent and sodium benzoate; carrying out stirring till the mixture III is uniform to obtain the peanut meal-based formaldehyde-free adhesive. The peanut meal-based formaldehyde-free adhesive and the preparation method have the advantages that the raw materials are easy to obtain; the preparation technology is simple; the operation is convenient; the main raw materials are taken from renewable materials; the prepared peanut meal-based formaldehyde-free adhesive is free of formaldehyde, safe and environmentally friendly.
Description
Technical field
The present invention relates to tackiness agent and preparing technical field thereof, be specifically related to aldehyde-free cement prepared by a kind of high-temperature high-pressure expressing peanut dregs of rice and preparation and application thereof.
Background technology
The tackiness agent being applied to wood working is at present mainly the synthetic resins such as petroleum-based urea aldehyde, phenolic aldehyde, melamino-formaldehyde.Three-aldehyde glue is Diazolidinyl Urea in wood working process, and formaldehyde has been defined as carcinogenic and cause deformed material by the World Health Organization, be generally acknowledged allergen, is also one of potential strong mutagen.Long Term Contact low dosage formaldehyde can cause chronic respiratory tract disease, to cause in nasopharyngeal carcinoma, colorectal carcinoma, brain tumor, menoxenia, nuclear transgenation, DNA single chain commissure and DNA and protein commissure and suppress the reparation of DNA damage, pregnancy syndrome, cause neonatal chromosome disorder, leukemia, causing teenager's memory and intelligence to decline.In all contactees, children and pregnant woman's PARA FORMALDEHYDE PRILLS(91,95) particularly responsive, harm is also just larger.
Simultaneously, three-aldehyde glue belongs to refining of petroleum product, along with sound, the prospective oil of the enhancing of people's environmental consciousness and national environmental protection regulation minimizing and to raise up based on the price that the macromolecular material of oil brings and problem of environmental pollution makes bio-based tackiness agent more and more come into one's own.Bio-based tackiness agent is the natural polymer subclass tackiness agent of the tackiness agent such as the alternative urea-formaldehyde resin prepared as starch, vegetable-protein, lignin etc. with the reproducible biomass material of degradable.
The high-temperature high-pressure expressing peanut dregs of rice are that peanut fries through high temperature the Main By product formed after fragrant oil expression, the annual production of China's peanut in 2013 is 1,691 ten thousand t, and wherein about 51% for oil expression, what 90% oil expression enterprise adopted is hot moulding technique, produce about 2,700,000 t high-temperature high-pressure expressing peanut dregs of rice therefore every year.High-temperature high-pressure expressing peanut dregs of rice crude protein content is about 50%, Semen arachidis hypogaeae protein is destroyed in hot moulding process, and sex change is serious, and its functional performance as protein reduces or loses, and containing a certain amount of aflatoxin in the high-temperature high-pressure expressing peanut dregs of rice, limit its application at field of food.
Current China application 201010239669.8 discloses a kind of preparation method of compound modified peanut protein tackiness agent, the method peanut protein powder is raw material, add properties-correcting agent calcium hydroxide and/or Sodium dodecylbenzene sulfonate and/or urea respectively, obtain Semen arachidis hypogaeae protein tackiness agent.The almost formaldehydeless release in production and use procedure of this tackiness agent.But this tackiness agent and vegetable-protein that expensive low temperature peanut meal separation and purification obtain few with output is raw material, properties-correcting agent cost is higher, follow-up does not consider to use crosslinking enhancer to improve its bonding strength.Therefore a kind of cheapness of suggestion, environmental protection and the high temperature peanut meal base adhesive preparation method of excellent property is needed.Have no the high-temperature high-pressure expressing peanut dregs of rice obtain ideal application relevant report as adhesive raw materials at present.
Summary of the invention
The invention provides a kind of peanut meal base aldehyde-free cement and preparation method thereof, described method technique is simple, easy to operate, and the tackiness agent produced is not containing formaldehyde, and safety and environmental protection, has broad application prospects.
For achieving the above object, the technical solution used in the present invention is:
A kind of peanut meal base aldehyde-free cement, is prepared from by the raw material comprising following weight part:
Softening water 60-70 part, high-temperature high-pressure expressing peanut dregs of rice powder 20-25 part, sodium lauryl sulphate 0.5-2 part, crosslinking enhancer 1.5-4 part, Sodium Benzoate 2-4 part.
Wherein, the described high-temperature high-pressure expressing peanut dregs of rice are steamed to fry in oil expression process by peanut high temperature and produce, and mistake 100 orders or 100 orders are with top sieve after crushed.
Wherein, in the described high-temperature high-pressure expressing peanut dregs of rice, the mass percentage content of albumen is not less than 40%, and residua content is below 10%, and the high-temperature high-pressure expressing peanut dregs of rice meeting above-mentioned condition can be used as the raw material of tackiness agent of the present invention.
But in order to ensure more preferably effect (guaranteeing raw materials quality), as a preferred version, the high-temperature high-pressure expressing peanut dregs of rice high-temperature high-pressure expressing peanut dregs of rice of the present invention are peanuts through clearing up drying, peel off, steam stir-fry (fry seed temperature 120-160 DEG C, fry seed time 15-25min), by product that squeezing (spiral oil press or fluid pressure type oil press zhai), No. six solvent extraction (extraction temperature 50-60 DEG C, extraction time 90-120min) obtain after extracting grease.
The present invention's high-temperature high-pressure expressing peanut dregs of rice exploitation bio-based protein adhesive by raising high-temperature high-pressure expressing peanut dregs of rice comprehensive utilization value, save energy resource, preserve the ecological environment.
In peanut meal base aldehyde-free cement of the present invention, described crosslinking enhancer is that dithiocarbonic anhydride, two sulphur (or trithio) are for the wherein one such as NSC 11801, thiocarbamide and potassium xanthonate, preferred potassium xanthonate and thiocarbamide, more preferably thiocarbamide, this type of crosslinking enhancer be conducive to the high-temperature high-pressure expressing peanut dregs of rice and sodium lauryl sulphate used in combination, contribute to preparing higher-quality tackiness agent.
More specifically, peanut meal base aldehyde-free cement of the present invention, is prepared from by the raw material of following weight part: softening water 60-65 part, high-temperature high-pressure expressing peanut dregs of rice powder 25-30 part, sodium lauryl sulphate 1.5-2 part, crosslinking enhancer thiocarbamide 2.5-3.5 part, Sodium Benzoate 2-4 part.
In tackiness agent of the present invention, softening water as dispersion medium, but those skilled in the art will envision that, other conventional dispersion medium also can be used in the present invention, and softening water only makes preferred version.
The present invention additionally provides the preparation method of above-mentioned high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement simultaneously, said method comprising the steps of:
(1) high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulphate are added in softening water, after stirring, carry out modification;
(2) mixture that step (1) obtains is cooled to room temperature, adds crosslinking enhancer and Sodium Benzoate, stir, to obtain final product.
Preferably, the modification described in step (1) temperature 60-80 DEG C, carry out 3-4 hour under stirring velocity 800-1200r/min, make modification more abundant thoroughly.
Preferably, 8-15min is stirred under being stirred for low whipping speed 800-1200r/min described in step (2).
The present invention protects the application of above-mentioned peanut meal base aldehyde-free cement in wood working simultaneously, and especially in the application of glued board, resin added can at 180g/m
2-220g/m
2between.
The invention has the advantages that:
(1) the present invention directly prepares tackiness agent with the high-temperature high-pressure expressing peanut dregs of rice, the high-temperature high-pressure expressing peanut dregs of rice are as the reproducible resource of one, as the main raw material of tackiness agent, contribute to solving the problem that traditional three-aldehyde glue uses petroleum resources, meet environment protection and continuable development principle;
(2) tackiness agent prepared is not containing free formaldehyde, and the wood-based plate of splicing does not exist Form aldehyde release problem, the formaldehyde pollution problem in the room air that thorough solution wood-based plate brings;
(3) efficiently solve high temperature peanut meal and contain aflatoxin, protein denaturation is serious, field of food utilization ratio is low problem, increase peanut meal utility value;
(4) the present invention adopts sodium lauryl sulphate as protein modified dose, and usage quantity is few, low price, can meet the service requirements of adhesion agent for artificial board, ensure that the Practical Performance of high temperature peanut meal protein adhesive.
Below in conjunction with enforcement, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for the invention.
Embodiment
Embodiment 1
A kind of high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement, is prepared from (technical process is see Fig. 1) by the raw material of following weight:
Softening water 70kg
Sodium lauryl sulphate 1kg
High-temperature high-pressure expressing peanut dregs of rice powder 25kg
Crosslinking enhancer potassium xanthonate 1.5kg
Sodium Benzoate 4kg
1) each raw material is weighed according to above-mentioned weight proportion;
2) in the reactor being furnished with agitator, thermometer and condensing works, add whole softening waters, high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulfate, stir;
3) heating in water bath to 60 DEG C, stirring reaction 3 hours under low whipping speed 1000r/min, reactant is cooled to 30 DEG C, obtained even peanut meal albumen mucus;
4) crosslinking enhancer potassium xanthonate is added in the peanut meal albumen mucus of gained, mixes, after add phenylformic acid and receive, stir 12min under low whipping speed 1000r/min and make high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement.
Embodiment 2
A kind of high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement, is prepared from by the raw material of following weight:
Softening water 60kg
Sodium lauryl sulfate 1.5kg
High-temperature high-pressure expressing peanut dregs of rice powder 20kg
Crosslinking enhancer thiocarbamide 3.5kg
Sodium Benzoate 4kg
1) each raw material is weighed according to above-mentioned weight proportion;
2) in the reactor being furnished with agitator, thermometer and condensing works, add whole softening waters, high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulfate, stir;
3) heating in water bath to 60 DEG C, stirring reaction 3 hours under low whipping speed 1200r/min, reactant is cooled to 30 DEG C, obtained even peanut meal albumen mucus;
4) crosslinking enhancer thiocarbamide is added in the peanut meal albumen mucus of gained, mixes, after add phenylformic acid and receive, stir 8min under low whipping speed 1200r/min and make high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement.
Embodiment 3
A kind of high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement, is prepared from (technical process is see Fig. 1) by the raw material of following weight:
Softening water 65kg
Sodium lauryl sulfate 2kg
High-temperature high-pressure expressing peanut dregs of rice powder 25kg
Crosslinking enhancer thiocarbamide 2.5kg
Sodium Benzoate 4kg
1) each raw material is weighed according to above-mentioned weight proportion;
2) in the reactor being furnished with agitator, thermometer and condensing works, add whole softening waters, high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulfate, stir;
3) heating in water bath to 60 DEG C, stirring reaction 4 hours under low whipping speed 1000r/min, reactant is cooled to 30 DEG C, obtained even peanut meal albumen mucus;
4) crosslinking enhancer thiocarbamide is added in the peanut meal albumen mucus of gained, mixes, after add phenylformic acid and receive, stir 12min under low whipping speed 1000r/min and make high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement.
Embodiment 4
A kind of high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement, is prepared from (technical process is see Fig. 1) by the raw material of following weight:
Softening water 65kg
Sodium lauryl sulfate 0.5kg
High-temperature high-pressure expressing peanut dregs of rice powder 25kg
Crosslinking enhancer potassium xanthonate 4kg
Sodium Benzoate 4kg
1) each raw material is weighed according to above-mentioned weight proportion;
2) in the reactor being furnished with agitator, thermometer and condensing works, add whole softening waters, high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulphate, stir;
3) heating in water bath to 80 DEG C, stirring reaction 4 hours under low whipping speed 800r/min, reactant is cooled to 30 DEG C, obtained even peanut meal albumen mucus;
4) crosslinking enhancer potassium xanthonate is added in the peanut meal albumen mucus of gained, mixes, after add phenylformic acid and receive, stir 15min under low whipping speed 900r/min and make high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement.
Control group 1
Compared with embodiment 3, distinctive points is only: in this control group, does not add crosslinking enhancer.
Control group 2
Compared with embodiment 3, distinctive points is: in this control group, and replace sodium lauryl sulphate using the caustic soda of equivalent and process peanut meal as protein modified dose, other all conditions are all with embodiment 3.
In order to verify the effect of tackiness agent of the present invention further, the present invention measures viscosity, the free formaldehyde content of above-mentioned 4 embodiments and the high-temperature high-pressure expressing peanut dregs of rice base aldehyde-free cement prepared by control group 1,2 respectively, above-mentioned tackiness agent is respectively used to preparation 400mm × 400mm tri-layers of poplar plywood simultaneously.Prepare by following technique:
Applying glue: the two-sided applying glue of central layer, Amount of spread is 200g/m
2.
Hot pressing pressure: 1.0MPa, hot pressing temperature 160 DEG C, hot pressing time 10min.
Carry out Performance Detection by GB/T17657-2013 " wood-based plate and face artificial board physicochemical property experimental technique " to veneered product, detected result is as shown in table 1.
The viscosity of table 1 high-temperature high-pressure expressing peanut dregs of rice base adhesive and bonding strength, the free formaldehyde content of made glued board
| Bonding strength (MPa) | Viscosity (PaS) | Free formaldehyde content/% | |
| Embodiment 1 | 1.65 | 25.1 | 0 |
| Embodiment 2 | 1.86 | 27.2 | 0 |
| Embodiment 3 | 1.96 | 28.9 | 0 |
| Embodiment 4 | 1.90 | 23.2 | 0 |
| Control group 1 | 1.23 | 18.6 | 0 |
| Control group 2 | 1.59 | 22.1 | 0 |
Experimental result shows, the tackiness agent that the present invention uses the high-temperature high-pressure expressing peanut dregs of rice to prepare is without free formaldehyde, and use the glued board dry state bonding strength of this production of adhesive to reach more than 1.6MPa, far above III class glued board standard (poplar >=0.7MPa) in GB.From upper table 1, bonding strength prepared by embodiment 3 reaches maximum (1.96MPa), and its corresponding component addition is softening water 65 parts, 25 parts, high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulphate 2 parts, crosslinking enhancer thiocarbamide 2.5 parts, Sodium Benzoate 4 parts.From comparative group 1 result, thiocarbamide is used to be better than the effect being significantly better than not using crosslinking enhancer as its effect of crosslinking enhancer; From comparative group 2 result, sodium lauryl sulphate is used to be better than using caustic soda as properties-correcting agent as its effect of properties-correcting agent.
At present, urea-formaldehyde resin adhesive cost 3500-4000 yuan/ton, melamino-formaldehyde tackiness agent cost 3500-4000 yuan/ton, cost PF resin adhesive is at 5000-6000 yuan/ton, the tackiness agent cost that the present invention directly utilizes the high-temperature high-pressure expressing peanut dregs of rice to prepare is at 3000-3500 yuan/ton, its cost, lower than three-aldehyde glue, has the wide prospect of marketing.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a peanut meal base aldehyde-free cement, is characterized in that; Be prepared from by the raw material comprising following weight part: softening water 60-70 part, high-temperature high-pressure expressing peanut dregs of rice powder 20-25 part, sodium lauryl sulphate 0.5-2 part, crosslinking enhancer 1.5-4 part, Sodium Benzoate 2-4 part.
2. peanut meal base aldehyde-free cement according to claim 1, is characterized in that: in the described high-temperature high-pressure expressing peanut dregs of rice, the mass percentage content of albumen is not less than 40%, and residua content is below 10%.
3. peanut meal base aldehyde-free cement according to claim 1 and 2, is characterized in that: the described high-temperature high-pressure expressing peanut dregs of rice were through pulverizing 100 orders or 100 orders with top sieve.
4. peanut meal base aldehyde-free cement according to claim 1 and 2, is characterized in that: described high-temperature high-pressure expressing peanut dregs of rice powder is peanut through clearing up drying, peel off, steam stir-fry, by product that squeezing, No. six solvent extraction obtain after extracting greases.
5. peanut meal base aldehyde-free cement according to claim 1, is characterized in that: described crosslinking enhancer is dithiocarbonic anhydride, and two sulphur (or trithio) are for a kind of in NSC 11801, thiocarbamide and potassium xanthonate.
6. peanut meal base aldehyde-free cement according to claim 1, is characterized in that: be prepared from by the raw material of following weight part: softening water 60-65 part, high-temperature high-pressure expressing peanut dregs of rice powder 25-30 part, sodium lauryl sulphate 1.5-2 part, crosslinking enhancer thiocarbamide 2.5-3.5 part, Sodium Benzoate 2-4 part.
7. the preparation method of the peanut meal base aldehyde-free cement according to any one of claim 1-6, is characterized in that, comprise the following steps:
(1) high-temperature high-pressure expressing peanut dregs of rice powder, sodium lauryl sulphate are added in softening water, after stirring, carry out modification;
(2) mixture that step (1) obtains is cooled to room temperature, adds crosslinking enhancer and Sodium Benzoate, stir, to obtain final product.
8. preparation method according to claim 7, is characterized in that: the modification described in step (1) temperature 60-80 DEG C, carry out 3-4 hour under stirring velocity 800-1200r/min.
9. the preparation method according to claim 7 or 8, is characterized in that: stir 8-15min under being stirred for low whipping speed 800-1200r/min described in step (2).
10. the application of peanut meal base aldehyde-free cement in wood working according to any one of claim 1-6.
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Cited By (5)
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| CN106398641A (en) * | 2016-09-28 | 2017-02-15 | 书香门地(上海)新材料科技有限公司 | Formaldehyde-free soybean protein-based adhesive and preparation method thereof |
| CN110041882A (en) * | 2019-05-17 | 2019-07-23 | 河南工业大学 | A method of preparing peanut protein adhesive |
| CN110272715A (en) * | 2019-06-24 | 2019-09-24 | 中国农业科学院农产品加工研究所 | High temperature peanut meal base Formaldehyde-free adhesive and the preparation method and application thereof |
| CN111286303A (en) * | 2020-04-15 | 2020-06-16 | 徐州安联木业有限公司 | Sleep-promoting modified high-temperature peanut meal protein adhesive, use method thereof and plywood |
| CN116445128A (en) * | 2022-09-28 | 2023-07-18 | 徐州安联木业有限公司 | Cellulose reinforced protein adhesive loaded with metal ions and preparation method thereof |
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| CN106398641A (en) * | 2016-09-28 | 2017-02-15 | 书香门地(上海)新材料科技有限公司 | Formaldehyde-free soybean protein-based adhesive and preparation method thereof |
| CN110041882A (en) * | 2019-05-17 | 2019-07-23 | 河南工业大学 | A method of preparing peanut protein adhesive |
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| CN111286303A (en) * | 2020-04-15 | 2020-06-16 | 徐州安联木业有限公司 | Sleep-promoting modified high-temperature peanut meal protein adhesive, use method thereof and plywood |
| CN116445128A (en) * | 2022-09-28 | 2023-07-18 | 徐州安联木业有限公司 | Cellulose reinforced protein adhesive loaded with metal ions and preparation method thereof |
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Inventor after: Wang Qiang Inventor after: Shi Aimin Inventor after: Chen Yan Inventor after: Liu Li Inventor after: Liu Hongzhi Inventor after: Hu Hui Inventor before: Wang Qiang Inventor before: Shi Aimin Inventor before: Chen Yan Inventor before: Liu Li Inventor before: Liu Hongzhi Inventor before: Hu Hui Inventor before: Yang Ying |