CN107868627A - Timber industry vegetable adhesive and preparation method thereof - Google Patents
Timber industry vegetable adhesive and preparation method thereof Download PDFInfo
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- CN107868627A CN107868627A CN201711128694.7A CN201711128694A CN107868627A CN 107868627 A CN107868627 A CN 107868627A CN 201711128694 A CN201711128694 A CN 201711128694A CN 107868627 A CN107868627 A CN 107868627A
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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
- C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J103/04—Starch derivatives
- C09J103/10—Oxidised starch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/18—Oxidised starch
- C08B31/185—Derivatives of oxidised starch, e.g. crosslinked oxidised starch
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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
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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
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
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Abstract
The invention discloses a kind of timber industry vegetable adhesive, the timber industry vegetable adhesive includes plant amylum binding agent, adhesion strength modifying agent, oxidant, paste agent, crosslinking agent, polymerization inhibitor, catalyst and water.The plant amylum binding agent is selected from tapioca, sweet potato starch and/or cornstarch, preferably tapioca；The crosslinking agent has the first crosslinking agent borax, the second crosslinking agent sodium trimetaphosphate and the 3rd crosslinking agent epoxychloropropane.The timber industry vegetable adhesive of the invention that the present invention is obtained using multi-step cross-linking reaction, so that the molecule of timber industry vegetable adhesive forms the chemical bond of stable multidimensional network structure, the water resistance and adhesion strength of timber industry vegetable adhesive are greatly increased.
Description
Technical field
The invention belongs to field of adhesive technology, and in particular to a kind of timber industry vegetable adhesive and preparation method thereof.
Background technology
The air pollution poisoning after interior decoration constantly occurred in recent years.During collective of students occurs after certain primary school finishing
Malicious vomiting event；Air is seriously polluted after certain university dormitory finishing, and collective of students is slept in the open outdoor event, has triggered some parents to enclose
The social event of school is attacked, causes public opinion.Domestic construction ornament materials, timber industry binding agent are substantially chemistry at present
Synthetic resin material such as urea-formaldehyde glue, phenol glue, melamino-formaldehyde glue (being commonly called as three-aldehyde glue).Want fundamentally solve Interior Space
Gas pollutes, and must just develop the green vegetable adhesive of excellent performance, substituted chemistry synthesis " three-aldehyde glue ", from source
Solve air pollution problem inside rooms.
The exploitation of China's plant amylum adhesive at present, research paper report are a lot, can summary and induction be three classes：The first kind
It is the processing method such as to be aoxidized, be esterified, is crosslinked to ative starch to obtain converted starch, this method simply changes the one of ative starch
A little physical characteristics, fundamentally can't resolve amylan adhesion strength it is low, non-watertight, mildew resistance is poor the problem of.Second class is
Starch is aoxidized at a certain temperature, is gelatinized, is crosslinked and obtains plant amylum adhesive, bonding of this method to amylan
Power is improved, but the water proofing property of glued membrane is not taken on a new look, and glue is depot very unstable, easy gel or
Degraded.3rd class is to carry out graft modification, party's legal system to starch using synthetic resin PVA, urine aldehyde glue, melamino-formaldehyde glue
Standby plant starch glue, adhesion strength are improved a lot, but water resistance is improved less, and glued membrane can be dissolved in water after meeting water,
Lose cohesive force.So needed to be further improved for the performance of domestic plant starch glue.
The content of the invention
The present invention is unable to reach the skill of industrial application requirement for the performance of timber industry vegetable adhesive in the prior art
Art problem is, and it is an object of the present invention to provide a kind of new timber industry vegetable adhesive.
Timber industry vegetable adhesive of the present invention include plant amylum binding agent, adhesion strength modifying agent, oxidant,
Paste agent, crosslinking agent, polymerization inhibitor, catalyst and water.
Wherein, the plant amylum binding agent is selected from tapioca, sweet potato starch and/or cornstarch, preferably para arrowroot
Powder；The crosslinking agent has the sodium trimetaphosphate as the first crosslinking agent, is handed over as the borax of the second crosslinking agent and as the 3rd
Join the epoxychloropropane of agent.The timber industry vegetable adhesive also includes pH adjusting agent, stabilizer and/or defoamer, described
PH adjusting agent has acidic ph modifier and alkaline pH adjusting agent.
The adhesion strength modifying agent is selected from that second is dilute and the dilute copolymer rubber powder of acetic acid second (VAE rubber powders), polyvinyl alcohol rubber powder
(PVA rubber powders), phenol glue, urea-formaldehyde glue, melamino-formaldehyde glue and/or acrylate glue class, preferably VAE rubber powders；The acid pH
Conditioning agent is selected from phosphoric acid, sulfuric acid and/or acetic acid, preferably phosphoric acid；The alkaline pH adjusting agent is selected from NaOH.
The timber industry vegetable adhesive also includes waterproofing agent, toughener, rheological agent, bactericide, preservative and/or done
Drying prescription.
The polymerization inhibitor is the first polymerization inhibitor calgon and/or the second polymerization inhibitor urea.
The crosslinking agent also has the sodium tripolyphosphate as the first crosslinking agent；The oxidant is sodium hydroxide, dioxygen
Water, potassium permanganate and/or sodium hypochlorite, preferably hydrogen peroxide；The paste agent is sodium hydroxide；The catalyst be sodium chloride,
Potassium chloride, calcium chloride and/or lithium chloride, preferably sodium chloride.
The stabilizer is triethanolamine and/or monoethanolamine, preferred alcohol amine；The waterproofing agent is potassium methyl silicate, first
Base sodium silanolate, Ludox, potassium silicate, lithium metasilicate and/or sodium metasilicate, preferably potassium methyl silicate；The toughener is glycerine；Institute
It is ammonium sulfite to state rheological agent；The bactericide is bactericidal nano-silver agent；The preservative is sodium benzoate；The drier is
Alum:Ferrous sulfate:Anhydrous calcium chloride is 1:1:The mixture of 1 (weight ratio)；The defoamer is tributyl phosphate.
The parts by weight of plant amylum binding agent 100, the parts by weight of oxidant 2~3, the parts by weight of paste agent 5~6, first are handed over
Join the parts by weight of agent borax 0.4~0.6, the parts by weight of the first crosslinking agent sodium trimetaphosphate 1.5~2, the 3rd crosslinking agent epoxychloropropane
20~40 parts by weight, the parts by weight of the first polymerization inhibitor calgon 4~6, the parts by weight of the second polymerization inhibitor urea 15~20, catalyst
2~3 parts by weight, the parts by weight of adhesion strength modifying agent 20~30, the parts by weight of acidic ph modifier 8~9, the weight of stabilizer 3~4
Part, the parts by weight of waterproofing agent 20~25, the parts by weight of toughener 10~15, the parts by weight of rheological agent 10~20, bactericide Nano Silver 1~2
Parts by weight, the parts by weight of preservative sodium benzoate 2~3, the parts by weight of drier 7~9, the parts by weight of defoamer 1.5~2.5, water 680~
730 parts by weight.
Another object of the present invention is to provide a kind of method for preparing timber industry vegetable adhesive, including following step
Suddenly：
A. plant amylum binding agent, adhesion strength modifying agent are dispersed in water under the stirring of 150~300rpm speed；Point
After dissipating uniformly, add stabilizer and be well mixed；The defoamer for accounting for defoamer total amount 40~60% is added, continues scattered 6~30
Preferably 10~15 minutes minute；
B. oxidant and paste agent are slowly added under 300~500rpm, progressively speed governing is extremely with the rise of gelatin viscosity
500~700rpm, 700~900rpm, 900~1200rpm, after to be oxidized dose is well mixed with paste agent, stop stirring, oxidation
Reaction preferably 40~60 minutes 30~90 minutes；
C. it is slowly added to acidic ph modifier under 900~1200rpm again and glue is adjusted to pH value=10~10.5 with end
Oxidation is reacted, and as the reduction speed governing of gelatin viscosity is to 700~900rpm；It is then slowly added into the first polymerization inhibitor and second
The mixed liquor of polymerization inhibitor, add the first crosslinking agent sodium trimetaphosphate and account for the catalyst progress ester of catalyst total amount 40~60%
Change cross-linking reaction, react preferably 40~60 minutes 30~80 minutes；
D. 7~8 are adjusted to and then by pH value, the second crosslinking agent borax soln is slow added into and carries out cross-linking reaction, during reaction
Between preferably 30~40 minutes 20~60 minutes；
E. alkaline pH adjusting agent is used again, adjusts pH value to 10~10.5, and glue temperature is heated to 35 DEG C~45 DEG C preferably
38 DEG C~42 DEG C；Reduction of speed sequentially adds remaining catalyst, the 3rd crosslinking agent epoxychloropropane and prevented to 500~700rpm again
Aqua carries out cross-linking reaction, preferably 120~160 minutes 120~180 minutes reaction time；
F. after reaction terminates, pH is adjusted to acidic ph modifier to sequentially add toughness reinforcing under 8~8.5, then 500~700rpm
Agent, preservative, bactericide, drier, remaining defoamer, it is well mixed, produces timber industry vegetable adhesive.
The effect that the present invention actively improves is：
1) starch is gelatinized by the present invention using oxidant, paste agent simultaneously, cuts off the molecule chain link of starch, then use
VAE rubber powders (ethene and acetate ethylene copolymer) carry out chemical graft to tapioca molecule, have both improved timber industry plant
The adhesion strength of glue, the green purpose without the volatilization of organic pernicious gas is reached again, instead of with formaldehyde, urea, trimerization
Cyanamide resin is the poisonous and harmful timber industry adhesive " three-aldehyde glue " of raw material.
2) the excellent timber industry vegetable adhesive of processability of the present invention is that logical " four step process methods " is realized.The first step
The molecule chain link of starch is cut off under strongly alkaline conditions using oxidation gelatinization technique first；Glue is adjusted to pH=10 by second step
~10.5, esterification and crosslinking reaction is carried out, timber industry plant xanthan molecule is formed the multidimensional network structure of preliminarily stabilised；3rd step
Glue pH is adjusted to 7~8 second of cross-linking reaction of progress, to improve the adhesion strength of timber glue and water resistance；4th step is by glue
Liquid is adjusted to pH=10~10.5, and third time cross-linking reaction is carried out at 40 DEG C of ± 2 DEG C of temperature of constant temperature and weak basic condition, makes timber
The molecule of technical plant glue forms the chemical bond of stable multidimensional network structure, greatly increases the resistance to of timber industry natural plant gum
Water-based and adhesion strength.
3) in third time cross-linking reaction, waterproofing agent is incorporated into vegetable adhesive, due to vegetable adhesive molecule
Grain is larger, and waterproof agent molecule is small, is nano level, in the state of vegetable adhesive dehydration, the small nanometer of waterproofing agent
Grain is just attached to natural plant gum molecular surface, generates the insoluble high-molecular compound of one layer of several molecule thick, netted organosilicon tree
Adipose membrane, this film have waterproof anti-soil, moisture-proof function, give the excellent water resistance of timber industry vegetable adhesive.
4) it is composite polymerzation inhibitor that the present invention employs calgon with urea simultaneously, and ammonium sulfite is rheological agent, very well
Ground solves the bin stability of timber industry vegetable adhesive.Ammonium sulfite can adjust the viscosity of natural plant gum, increase mobility.
Calgon category cationic surfactant, it can make xanthan molecule is positively charged to play the peptizaiton repelled each other between molecule, it
With the perfect adaptation of urea ammonium sulfite, timber industry vegetable adhesive is given with good bin stability.
Embodiment
The present invention is further illustrated below by embodiment.
Embodiment 1~3 and the timber industry vegetable adhesive of comparative example 1
First its preparing materials are：
It is standby for 30% sodium hydrate aqueous solution to prepare solid content；
The phosphate aqueous solution that compound concentration is 15% is standby；
Prepare alum, ferrous sulfate and anhydrous calcium chloride 1:1:1 (weight ratio) mixing for standby use；
Prepare water：Borax=20:1 (weight ratio) aqueous solution is standby；
Prepare 30% aqueous solution of urea, then calgon is dissolved into 30% aqueous solution of urea, resistance
Poly- agent is standby.
A. plant amylum binding agent, adhesion strength modifying agent are dispersed in water under the stirring of 200rpm speed；It is scattered equal
After even, add stabilizer and be well mixed；Add and account for the defoamer tributyl phosphate of defoamer total amount 50% to suppress under stirring
Caused bubble, continue scattered 10~15 minutes；
B. oxidant and paste agent are slowly added under 400rpm, progressively speed governing is extremely with the rise of gelatin viscosity
600rpm, 800rpm, 1000rpm, after to be oxidized dose is well mixed with paste agent, stop stirring, oxidation reaction 40~60 minutes,
The wire drawing situation of glue is checked, is specially stained with a little glue with two fingers, then does and merges, separates, remerging, separating again, see
Examine and be preferred with there are many filaments；
C. it is slowly added to pH adjusting agent under 1000rpm again and glue is adjusted to pH value=10~10.5 to terminate oxidation instead
Should, and as the reduction speed governing of gelatin viscosity is to 800rpm；It is then slowly added into the mixing of the first polymerization inhibitor and the second polymerization inhibitor
Liquid hybrid reaction 8~10 minutes, add the first crosslinking agent sodium trimetaphosphate and account for the catalyst progress of catalyst total amount 50%
Esterification and crosslinking reacts, and reacts 40~60 minutes；
D. 7~8 are adjusted to and then by pH value, the second crosslinking agent borax soln is slow added into and carries out cross-linking reaction, during reaction
Between 30~40 minutes；
E. alkaline pH adjusting agent is used again, adjusts pH value to be heated to 40 DEG C ± 2 DEG C to 10~10.5, and by glue temperature；Drop again
Speed sequentially adds remaining catalyst, the 3rd crosslinking agent epoxychloropropane and waterproofing agent and carries out cross-linking reaction, reaction to 600rpm
100~120 minutes time；
F. after reaction terminates, pH is adjusted to 8~8.5 with acidic ph modifier, then sequentially add toughener at 600 rpm
Glycerine, preservative sodium benzoate, rheological agent sodium sulfite, bactericidal nano-silver agent, drier, remaining defoamer tricresyl phosphate fourth
Ester, it is well mixed, produces timber industry vegetable adhesive.
The formula (parts by weight) of the timber industry vegetable adhesive of table 1
Remarks：Potassium methyl silicate is 40% solid content.
The conventionally items for the timber industry vegetable adhesive that testing example 1~3 and comparative example 1 are prepared
Performance, the difference of embodiment 1~3 is the number of binding agent is constant in formula, the increasing of cohesion modifiers and various auxiliary agents
Add, the viscosity of obtained timber industry vegetable adhesive, interior bonding strength, bonding strength, water proofing property are gradually incremented by.But contrast
The property indices of example 1 are below embodiment 1~3 (except viscosity).Every technical performance of embodiment 3 or more than GB/
The technical indicator of T14732-2006 melamino-formaldehyde glue.
Table 2 (by taking glued board, medium and high density fibre panel as an example)
The performance comparison of the timber industry vegetable adhesive of table 3 and melamine glue glutol
Conclusion：Table 3 shows timber industry vegetable adhesive of the invention with melamine-formaldehyde resin adhesive by GB/
T14732-2006 methods testing result contrasts.The timber industry vegetable adhesive technical performance of the present invention and urea-formaldehyde glue, phenolic aldehyde
Glue, melamino-formaldehyde glue technical performance compare, and the present invention is definitely better than " three-aldehyde glue " in environmental protection, has been really achieved green ring
Protect, no toxic and harmful gas volatilization.It is significantly better than in terms of adhesion strength, water proofing property " three-aldehyde glue ", more can be shown that the present invention's
It is advanced.
Raw material selected by the present invention is regenerated resources raw material production upstream environment protection clean, green and healthy, timber industry of the present invention
Vegetable adhesive non-volatility pernicious gas, liquid discharge during production and application, glued membrane is biodegradable, and product is entirely given birth to
Order in the cycle, carbon emission is low, green, is environmentally friendly product, meets national green development policies.
Claims (10)
1. a kind of timber industry vegetable adhesive, the timber industry vegetable adhesive includes plant amylum binding agent, bonded by force
Spend modifying agent, oxidant, paste agent, crosslinking agent, polymerization inhibitor, catalyst and water.
2. timber industry vegetable adhesive as claimed in claim 1, it is characterised in that the plant amylum binding agent is selected from wood
Sweet potato starch, sweet potato starch and/or cornstarch, preferably tapioca；The crosslinking agent has inclined as the three of the first crosslinking agent
Sodium phosphate, the borax as the second crosslinking agent and the epoxychloropropane as the 3rd crosslinking agent.
3. timber industry vegetable adhesive as claimed in claim 2, it is characterised in that the timber industry vegetable adhesive is also
Including pH adjusting agent, stabilizer and/or defoamer.
4. timber industry vegetable adhesive as claimed in claim 3, it is characterised in that the adhesion strength modifying agent is selected from second
Dilute and the dilute copolymer rubber powder of acetic acid second, polyvinyl alcohol rubber powder, phenol glue, urea-formaldehyde glue, melamino-formaldehyde glue and/or acrylate glue
Class, preferably second be dilute and the dilute copolymer rubber powder of acetic acid second；The pH adjusting agent is selected from phosphoric acid, sulfuric acid, acetic acid and/or NaOH, preferably
Phosphoric acid.
5. timber industry vegetable adhesive as claimed in claim 3, it is characterised in that the timber industry vegetable adhesive is also
Including waterproofing agent, toughener, rheological agent, bactericide, preservative and/or drier.
6. timber industry vegetable adhesive as claimed in claim 1, it is characterised in that the polymerization inhibitor is the first polymerization inhibitor six
Sodium metaphosphate and/or the second polymerization inhibitor urea.
7. timber industry vegetable adhesive as claimed in claim 2, it is characterised in that
The crosslinking agent also has the sodium tripolyphosphate as the first crosslinking agent；The oxidant is sodium hydroxide, hydrogen peroxide, height
Potassium manganate and/or sodium hypochlorite, preferably hydrogen peroxide；The paste agent is sodium hydroxide；The catalyst is sodium chloride, chlorination
Potassium, calcium chloride and/or lithium chloride, preferably sodium chloride.
8. timber industry vegetable adhesive as claimed in claim 5, it is characterised in that the stabilizer be triethanolamine and/or
Monoethanolamine, preferred alcohol amine；The waterproofing agent be potassium methyl silicate, methyl silicon sodium alcoholate, Ludox, potassium silicate, lithium metasilicate and/or
Sodium metasilicate, preferably potassium methyl silicate；The toughener is glycerine；The rheological agent is ammonium sulfite；The bactericide is to receive
The silver-colored bactericide of rice；The preservative is sodium benzoate；The drier is alum:Ferrous sulfate:The weight ratio of anhydrous calcium chloride
For 1:1:1 mixture；The defoamer is tributyl phosphate.
9. timber industry vegetable adhesive as claimed in claim 5, it is characterised in that the parts by weight of plant amylum binding agent 100,
The parts by weight of oxidant 2~3, the parts by weight of paste agent 5~6, the parts by weight of the first crosslinking agent 1.5~2, the weight of the second crosslinking agent 0.4~0.6
Measure part, the parts by weight of the 3rd crosslinking agent 20~40, the parts by weight of the first polymerization inhibitor calgon 4~6, the second polymerization inhibitor urea 15~
20 parts by weight, the parts by weight of catalyst 2~3, the parts by weight of adhesion strength modifying agent 20~30, the parts by weight of acidic ph modifier 8~9,
The parts by weight of stabilizer 3~4, the parts by weight of waterproofing agent 20~25, the parts by weight of toughener 10~15, the parts by weight of rheological agent 10~20, kill
The parts by weight of microbial inoculum Nano Silver 1~2, the parts by weight of preservative sodium benzoate 2~3, the parts by weight of drier 7~9, defoamer 1.5~2.5
Parts by weight, the parts by weight of water 680~730.
10. a kind of method of the timber industry vegetable adhesive prepared described in claim 1, comprises the following steps：
A. plant amylum binding agent, adhesion strength modifying agent are dispersed in water under the stirring of 150~300rpm speed；It is scattered equal
After even, add stabilizer and be well mixed；The defoamer for accounting for defoamer total amount 40~60% is added, is continued scattered 6~30 minutes
It is preferred that 10~15 minutes；
B. oxidant and paste agent are slowly added under 300~500rpm, with gelatin viscosity rise progressively speed governing to 500~
700rpm, 700~900rpm, 900~1200rpm, after to be oxidized dose is well mixed with paste agent, stop stirring, oxidation reaction
Preferably 40~60 minutes 30~90 minutes；
C. it is slowly added to acidic ph modifier under 900~1200rpm again and glue is adjusted to pH value=10~10.5 to terminate oxygen
Change reaction, and as the reduction speed governing of gelatin viscosity is to 700~900rpm；It is then slowly added into the first polymerization inhibitor and the second inhibition
The mixed liquor of agent, the first crosslinking agent sodium trimetaphosphate is added with the catalyst for accounting for catalyst total amount 40~60% and carries out esterification friendship
Connection reaction, reacts preferably 40~60 minutes 30~80 minutes；
D. 7~8 and then by pH value are adjusted to, the second crosslinking agent borax soln is slow added into and carries out cross-linking reaction, reaction time 20
Preferably 30~40 minutes~60 minutes；
E. alkaline pH adjusting agent is used again, adjusts pH value to be heated to 35 DEG C~45 DEG C preferably 38 DEG C to 10~10.5, and by glue temperature
~42 DEG C；Reduction of speed sequentially adds remaining catalyst, the 3rd crosslinking agent epoxychloropropane and waterproofing agent to 500~700rpm again
Carry out cross-linking reaction, preferably 120~160 minutes 120~180 minutes reaction time；F. after reaction terminates, acidic ph modifier is used
PH is adjusted to 8~8.5, then sequentially adds under 500~700rpm toughener, preservative, bactericide, drier, remaining disappear
Infusion, it is well mixed, produces timber industry vegetable adhesive.
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|---|---|---|---|---|
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| CN109971391A (en) * | 2018-05-25 | 2019-07-05 | 佛山市高明区爪和新材料科技有限公司 | A kind of preparation method of modified starch base Instant cement |
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Cited By (8)
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| US11891458B2 (en) | 2017-08-22 | 2024-02-06 | China Petroleum & Chemical Corporation | Starch-containing microsphere and preparation method and use thereof |
| CN109971391A (en) * | 2018-05-25 | 2019-07-05 | 佛山市高明区爪和新材料科技有限公司 | A kind of preparation method of modified starch base Instant cement |
| CN110734720A (en) * | 2018-07-20 | 2020-01-31 | 欧菲影像技术（广州）有限公司 | Adhesive and preparation method and application thereof |
| CN109227866A (en) * | 2018-09-06 | 2019-01-18 | 余姚市合丰厨具有限公司 | A kind of reed plate of high intensity |
| CN109281233A (en) * | 2018-09-12 | 2019-01-29 | 徐晨攀 | A kind of preparation method of degradable wood-plastic board |
| CN110105899A (en) * | 2019-05-16 | 2019-08-09 | 河南汇泉生物科技有限公司 | A kind of paper paste case adhesive and preparation method thereof |
| US11834589B2 (en) * | 2019-08-22 | 2023-12-05 | Hongsheng Technology (Beijing) Co., Ltd | Method for preparing a modified environment-friendly corn starch adhesive |
| CN111004591A (en) * | 2019-12-12 | 2020-04-14 | 海南热带海洋学院 | Adhesive for sanitary incense, preparation method thereof and sanitary incense |
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