CN103275647A - Method for preparing modified quickly dried waterproof starch adhesive - Google Patents
Method for preparing modified quickly dried waterproof starch adhesive Download PDFInfo
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- CN103275647A CN103275647A CN2013102172807A CN201310217280A CN103275647A CN 103275647 A CN103275647 A CN 103275647A CN 2013102172807 A CN2013102172807 A CN 2013102172807A CN 201310217280 A CN201310217280 A CN 201310217280A CN 103275647 A CN103275647 A CN 103275647A
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Abstract
The invention discloses a method for preparing a modified quickly dried waterproof starch adhesive. An oxidized starch adhesive is prepared by using a cooling method; an oxidant and a filling are selected, the formula of the oxidant and the filling is optimized, and melamine formaldehyde resin is added for modification, so that the viscosity of the adhesive is proper, and the flowability is high; furthermore, the production period is shortened, the drying speed is high, the storage time is long, and the manufacturing cost is low; a paper board manufactured by using the method is high in bonding strength and edge-pressing strength and has the characteristics of high bonding water resistance and the like; the comprehensive performance of the paperboard is greatly improved; and certain problems in the actual production is solved.
Description
Technical field
The present invention relates to a kind of preparation method of sizing agent, particularly a kind of is the preparation method of the quick-drying water resistant starch base adhesive of main raw material with starch.
Background technology
In recent years, along with the appearance of environmental regulation and the enhancing of health of people consciousness, country is more and more stricter to free formaldehyde volatilization quantitative limitation in the acetals sizing agent.At present, " three-aldehyde glue " that wood processing field is generally used (being the glutinous agent of urea-formaldehyde resin, resol and melamine-formaldehyde resin adhesive) discharges a large amount of formaldehyde in the process of producing and using, cause environmental pollution and endanger public health.Therefore.Exploitation non-toxic, environmental friendly timber sizing agent will be research emphasis from now on.
The starch based sizing agent has more and more received numerous scholars' concern as environmentally friendly natural glue.Because starch has natural macromole, active functional group and the outstanding characteristic that can adapt to environmental requirement, people transfer to sight on the starch sizing agent again, and this mainly contains three reasons: at first, starch itself has the potentiality as sizing agent.Starch and derivative thereof have good cementability and film-forming properties, are good natural resource sizing agents; Secondly, starch is class wide material sources, excellent honest and clean, the environment amenable natural macromolecular material of price, has nontoxic, free from extraneous odour, free of contamination characteristics; Again, in today of emphasizing the strategy of sustainable development, along with the minimizing day by day of petroleum resources, the Chemicals with the oil by raw material will be replaced by reproducible natural high molecular substance.Timber sizing agents such as " three-aldehyde glues " is that the monomer by the Nonrenewable resources oil is synthesized, thereby impel domestic and international researcher competitively to seek the substitute of " three-aldehyde glue ", in the development project of many timber sizing agents, starch-base adhesive becomes one of natural glue of tool potentiality to be exploited.
The measured starch sizing agent of matter, outward appearance has suitable viscosity for not having precipitation, not stratified, uniform liquid, good stability, storage period is long, and the active phase can be satisfied processing requirement, the bonding strength height after the impregnation.The performance performance of above starch based sizing agent is not single yet, all is closely connected each other usually, and other performances also can be improved when improving a certain performance.Therefore, taking all factors into consideration above each factor, is not the very significant while in the physical and mechanical property influence to bonding wood, can autotelicly improve at some performance.Wherein, the performance of needing improvement most badly has: improve bonding strength and water tolerance, improve package stability, improve liquidity.In addition, a remarkable weakness of starch sizing agent is that seasoning speed is slow, and important measures that improve its performance are siccative such as the wilkinite that adds some mineral fillers such as the modification of sodium type, kaolin, accelerates the film forming speed of glue, shortens time of drying; Lubricant is riodine, the pure and mild soap of iodate etc., can keep the flexibility of glued membrane under different weather condition, but can only use on a small quantity, because the disadvantageous effect that reduces adhesive power is arranged; Add linking agent such as borax etc., can improve bonding strength, water tolerance and the antiseptic property of amylan by crosslinking reaction; Materials such as adding sanitas such as phenol can improve the anti-mildew antiseptic property of amylan, prolong storage period and prevent going mouldy of glue goods.
Summary of the invention
The objective of the invention is at existing starch sizing agent, a kind of preparation method with starch sizing agent of weak point time of drying, tax refusal excellent performance is provided.
In order to realize above goal of the invention, the present invention by the following technical solutions: a kind of preparation method of modification quick-drying water-resisting type starch sizing agent may further comprise the steps:
(1) prepares raw material by following mass fraction: 100 parts of starch; 500～800 parts of deionized waters; 0.1～0.5 part in hydrogen persulfate sodium; 5～8 parts in sodium hydroxide; 1～3 part of borax; 5～10 parts of compounded mixs; 3～8 parts of terpolycyantoamino-formaldehyde resins;
(2) add starch in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
(3) mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Described starch is W-Gum, wheat starch, Starch rice, sweet potato starch or yam starch.
Described compounded mix is the mixture of polyvinyl alcohol and urea-formaldehyde resin, and the mass ratio of polyvinyl alcohol and urea-formaldehyde resin is 1～1.5:1.
Selecting potassium hydrogen persulfate for use is the oxygenant of starch conversion, has not only remedied the weak point of oxygenant commonly used, and has shortened the production cycle of sizing agent.The adding of compounded mix has increased the solid matter content of sizing agent, has not only improved the stability of sizing agent, and has improved cohesive force and the rate of drying of sizing agent, has reduced the corrodibility of sizing agent to cardboard, has also reduced the glue cost.Adopt the terpolycyantoamino-formaldehyde resin modified starch adhesive, solved that corrugated cardboard for a long time easily gets damp and the problem of gluing water resisting property difference, the anti-water time is had significant improvement.
Major advantage of the present invention and beneficial effect are: adopt cold method for making to prepare the agent of Sumstar 190 gluing, process is to oxygenant, filler selection and formulation optimization, and after adding the terpolycyantoamino-formaldehyde resin modification, the viscosity of sizing agent is suitable, good flowing properties, the production cycle shortens, and rate of drying is very fast, storage time is longer, and cost of manufacture is lower; Characteristics such as the cardboard with its production has bonding strength, side pressure strength is higher, and gluing water resisting property is stronger have improved the over-all properties of cardboard greatly, have solved some problems in the actual production.
Embodiment
The present invention is further illustrated below by embodiment.
Embodiment one:
Prepare raw material by following mass fraction: 100 parts of sweet potato starchs; 500 parts of deionized waters; 0.5 part in hydrogen persulfate sodium; 6 parts in sodium hydroxide; 2 parts of boraxs; 3 parts of polyvinyl alcohol, 3 parts of urea-formaldehyde resins; 4 parts of terpolycyantoamino-formaldehyde resins;
Add sweet potato starch in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Embodiment two:
Prepare raw material by following mass fraction: 100 parts of Starch rices; 600 parts of deionized waters; 0.4 part in hydrogen persulfate sodium; 7 parts in sodium hydroxide; 3 parts of boraxs; 3 parts of polyvinyl alcohol, 3 parts of urea-formaldehyde resins; 5 parts of terpolycyantoamino-formaldehyde resins;
Add Starch rice in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Embodiment three:
Prepare raw material by following mass fraction: 100 parts of yam starchs; 700 parts of deionized waters; 0.3 part in hydrogen persulfate sodium; 5 parts in sodium hydroxide; 2 parts of boraxs; 4 parts of polyvinyl alcohol, 4 parts of urea-formaldehyde resins; 3 parts of terpolycyantoamino-formaldehyde resins;
Add yam starch in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Embodiment four:
Prepare raw material by following mass fraction: 100 parts of W-Gums; 800 parts of deionized waters; 0.2 part in hydrogen persulfate sodium; 8 parts in sodium hydroxide; 3 parts of boraxs; 3 parts of polyvinyl alcohol, 2 parts of urea-formaldehyde resins; 8 parts of terpolycyantoamino-formaldehyde resins;
Add W-Gum in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Embodiment five:
Prepare raw material by following mass fraction: 100 parts of wheat starches; 650 parts of deionized waters; 0.1 part in hydrogen persulfate sodium; 7 parts in sodium hydroxide; 1 part of borax; 5 parts of polyvinyl alcohol, 5 parts of urea-formaldehyde resins; 7 parts of terpolycyantoamino-formaldehyde resins;
Add wheat starch in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
Cut and be of a size of 100 mm * two-layer corrugated cardboard of 100mm square, by glue spreading apparatus glue is coated on the stupefied peak equably, binding with facial tissue under 160～180 ℃ of temperature He under the certain pressure then.Cardboard after binding is placed seasoning under the room temperature, then it is cut to the test sample of 50 mm * 25 mm, (25 ℃, indoor 24 h 70%RH) namely get corrugated cardboard sample to be measured to disperse to be placed on fixed temperature and humidity.
Performance Detection:
(1) mensuration of sizing agent viscosity detects with being coated with-4 viscometers and stopwatch, and the machine viscosity is 30～40 s on the best;
(2) mensuration of bonding strength is undertaken by the operational requirement among the GB/T 6548-1998 " assay method of corrugated cardboard bond strength ";
(3) detection of side pressure strength is carried out according to the operational requirement among the GB/T 6546-1998 " assay method of corrugated cardboard side pressure strength ", and each data is all surveyed 10 times, averages;
(4) detection of gluing water repelling property is carried out according to the operational requirement among the GB/T 22873-2008 " mensuration of glue bond water resistance of corrugated cardboard (flooding method) ".
Test result shows: the sizing agent viscosity is at 35～40s.Bonding strength 3.4～4.2 * 10
3N/m.Side pressure strength is 3.8～4.6 * 10
3N/m.The anti-water time can reach 36h.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1. the preparation method of a modification quick-drying water-resisting type starch sizing agent is characterized in that may further comprise the steps:
Prepare raw material by following mass fraction: 100 parts of starch; 500～800 parts of deionized waters; 0.1～0.5 part in hydrogen persulfate sodium; 5～8 parts in sodium hydroxide; 1～3 part of borax; 5～10 parts of compounded mixs; 3～8 parts of terpolycyantoamino-formaldehyde resins;
Add starch in the deionized water again, stir, add hydrogen persulfate amine, stir 30min, add sodium hydroxide, stir 30min;
Mixed fillers and borax are mixed, slowly add in the starch solution, stir, add terpolycyantoamino-formaldehyde resin, be stirred to required viscosity, namely get modification quick-drying water-resisting type starch sizing agent.
2. the preparation method of modification quick-drying water-resisting type starch sizing agent according to claim 1, it is characterized in that: described starch is W-Gum, wheat starch, Starch rice, sweet potato starch or yam starch.
3. the preparation method of modification quick-drying water-resisting type starch sizing agent according to claim 1, it is characterized in that: described compounded mix is the mixture of polyvinyl alcohol and urea-formaldehyde resin, the mass ratio of polyvinyl alcohol and urea-formaldehyde resin is 1～1.5:1.
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| CN2013102172807A CN103275647A (en) | 2013-06-04 | 2013-06-04 | Method for preparing modified quickly dried waterproof starch adhesive |
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| CN2013102172807A CN103275647A (en) | 2013-06-04 | 2013-06-04 | Method for preparing modified quickly dried waterproof starch adhesive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802544A (en) * | 2016-05-25 | 2016-07-27 | 合肥东彩印刷科技有限公司 | Modified starch adhesive |
| CN105969245A (en) * | 2016-05-25 | 2016-09-28 | 合肥东彩印刷科技有限公司 | Waterproof anti-corrosion starch adhesive with excellent flexibility |
| CN106221608A (en) * | 2016-08-30 | 2016-12-14 | 布志刚 | A kind of glue |
| CN107385992A (en) * | 2017-06-28 | 2017-11-24 | 吕超 | A kind of preparation method of the water-fast environment-friendly paperboard of packed in cases |
| CN108264863A (en) * | 2017-12-13 | 2018-07-10 | 阜阳市福旺食品有限公司 | A kind of environment-friendly type degumming preventing amylan |
-
2013
- 2013-06-04 CN CN2013102172807A patent/CN103275647A/en active Pending
Non-Patent Citations (4)
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| 刘亚伟等: "《淀粉生产及其深加工技术》", 31 July 2001, 中国轻工业出版社 * |
| 刘奇龙: "耐水增强KMnO4氧化淀粉胶粘剂的研制", 《包装工程》 * |
| 李彭、王小华: "快干耐水型氧化淀粉胶黏剂的研制", 《包装学报》 * |
| 谭海彦等: "淀粉与脲醛树脂复合胶粘剂的制备与性能研究", 《中国胶粘剂》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802544A (en) * | 2016-05-25 | 2016-07-27 | 合肥东彩印刷科技有限公司 | Modified starch adhesive |
| CN105969245A (en) * | 2016-05-25 | 2016-09-28 | 合肥东彩印刷科技有限公司 | Waterproof anti-corrosion starch adhesive with excellent flexibility |
| CN106221608A (en) * | 2016-08-30 | 2016-12-14 | 布志刚 | A kind of glue |
| CN107385992A (en) * | 2017-06-28 | 2017-11-24 | 吕超 | A kind of preparation method of the water-fast environment-friendly paperboard of packed in cases |
| CN108264863A (en) * | 2017-12-13 | 2018-07-10 | 阜阳市福旺食品有限公司 | A kind of environment-friendly type degumming preventing amylan |
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Application publication date: 20130904 |