CN103254446B - One-step production method for degradable biological latex - Google Patents
One-step production method for degradable biological latex Download PDFInfo
- Publication number
- CN103254446B CN103254446B CN201310152011.7A CN201310152011A CN103254446B CN 103254446 B CN103254446 B CN 103254446B CN 201310152011 A CN201310152011 A CN 201310152011A CN 103254446 B CN103254446 B CN 103254446B
- Authority
- CN
- China
- Prior art keywords
- starch
- corn starch
- production method
- squeezing
- corn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B29C47/92—
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention discloses a one-step production method for a degradable biological latex. The one-step production method comprises the following steps of: firstly placing dry corn starch in a mixing device, sequentially spraying hydrochloric acid, sodium trimetaphosphate solution, acrylic solution and hydrogen peroxide into the mixing device, uniformly mixing to form a corn starch mixture, then sieving the corn starch mixture by utilizing a sieve body of 48-65 meshes, placing the sieved corn starch mixture in a squeezing device to carry out squeezing curing treatment, and sequentially smashing, drying and cooling the cured corn starch mixture to prepare a degradable biological latex finished product. According to the process, the main raw material of the corn starch is a renewable biological resource, easily obtained, biodegradable and pollution-free. By adopting the production technology of a squeezing method, the crystal structure of the starch can be damaged, and therefore, a molecular chain is fully extended and exposed, the starch is pre-gelatinized, the product can be dissolved in cold water, the emission of three wastes can not be generated, and the one-step production method is beneficial to environment conservation.
Description
Technical field
The present invention relates to a kind of production technique of degradable biological latex.
Background technology
White Board is the important paper kind of a large class of paper industry, and along with expanding economy, as the high-grade variety in paper, its demand is increasing.The petroleum base styrene-butadiene latex used as paint adhesive in coating process or the demand of propyl benzene latex huge, huge consumption for non-renewable petroleum resources, there is larger pollution in its production and application process simultaneously, product price is high, the serious development fettering paper industry, in the urgent need to development of alternatives.
More about the substitute of disclosed petroleum base latex at present, utilize starch base as an alternative product be exactly one of them, but majority cannot adapt to high speed and large fabric width paper machine at present in many substitutes, and along with the progress of paper industry, high solids coatings is widely applied, and traditional treated starch can not meet the demand of paper industry completely.The high-grade latex substitute of current papermaking development can be adapted in the urgent need to exploitation.
Summary of the invention
It is soluble that technical problem to be solved by this invention is to provide a kind of product, produces environment friendly and pollution-free One-step production method for degradable biological latex.
For solving the problems of the technologies described above, technical scheme of the present invention is: be first placed in mixing device by corn dry starch, the hydrochloric acid of relative starch butt weight 1.4% ~ 1.6%, the solution of Trisodium trimetaphosphate of relative starch butt weight 0.3 ~ 0.5% and acrylic acid solution of relative starch butt weight 2 ~ 4% is sprayed into successively in mixing device, and mix with corn dry starch, spray into the hydrogen peroxide of relative starch butt weight 0.03 ~ 0.06% again, and mix formation Corn Starch Blends; Then 48 ~ 65 mesh sieve bodies are utilized to be sieved by above-mentioned Corn Starch Blends; The Corn Starch Blends that screening obtains is put into squeezing device and carries out squeezing, maturing process; Corn Starch Blends good for slaking is carried out successively pulverize, dry, cooling i.e. obtained degradable biological latex finished product.
As preferred technical scheme, One-step production method for degradable biological latex, first corn dry starch is placed in mixing device, the hydrochloric acid of relative starch butt weight 1.5%, the solution of Trisodium trimetaphosphate of relative starch butt weight 0.4% and acrylic acid solution of relative starch butt weight 3% is sprayed into successively in mixing device, and mix with corn dry starch, spray into the hydrogen peroxide of relative starch butt weight 0.05% again, and mix formation Corn Starch Blends; Then 60 mesh sieve bodies are utilized to be sieved by above-mentioned Corn Starch Blends; The Corn Starch Blends that screening obtains is put into squeezing device and carries out squeezing, maturing process; Corn Starch Blends good for slaking is carried out successively pulverize, dry, cooling i.e. obtained degradable biological latex finished product.
As preferred technical scheme, described mixing device comprises double worm mixer.
As preferred technical scheme, described squeezing device comprises twin-screw extruder.
As the improvement to technique scheme, the working parameter of described twin-screw extruder is:
Rate of feeding: 40 ~ 50rpm; Screw speed: 90 ~ 110rpm; Soft district barrel zone temperature: 110 ~ 130 DEG C.
As preferred technical scheme, before the process of Corn Starch Blends squeezing, maturing, moisture weight content is 30 ~ 35%, and slaking reaction district temperature is 70 ~ 90 DEG C.
As preferred technical scheme, before the process of Corn Starch Blends squeezing, maturing, moisture weight content is 33%, and slaking reaction district temperature is 80 DEG C.
Owing to have employed technique scheme, the invention has the beneficial effects as follows: the main raw material in this technique is W-Gum, and W-Gum is renewable biological source, draw materials conveniently, biodegradable, pollution-free.Adopt extrusion process production technology; because it reacts at high temperature under high pressure, the crystalline texture of starch can be destroyed, make molecular chain fully stretch exposure; be conducive to fully carrying out of chemical reaction; reaction efficiency is high, owing to destroying the crystalline texture of starch, can make starch pregelatinated; product can fully dissolve in cold water; decrease thermal energy consumption during boiling compared with traditional starch class sizing agent, " three wastes " discharge can not be produced in this technique, contribute to protection of the environment.
Embodiment
One-step production method for degradable biological latex, as a kind of preferred embodiment, this technique is obtained by following methods: be first placed in mixing device by corn dry starch, the hydrochloric acid of relative starch butt weight 1.5%, the solution of Trisodium trimetaphosphate of relative starch butt weight 0.4% and acrylic acid solution of relative starch butt weight 3% is sprayed into successively in mixing device, and mix with corn dry starch, spray into the hydrogen peroxide of relative starch butt weight 0.05% again, and mix formation Corn Starch Blends; Then 60 mesh sieve bodies are utilized to be sieved by above-mentioned Corn Starch Blends; The Corn Starch Blends that screening obtains is put into squeezing device and carries out squeezing, maturing process; Corn Starch Blends good for slaking is carried out successively pulverize, dry, cooling i.e. obtained degradable biological latex finished product.
Described in the present embodiment, mixing device comprises double worm mixer; Described squeezing device comprises twin-screw extruder, and the working parameter of described twin-screw extruder is: rate of feeding: 40 ~ 50rpm; Screw speed: 90 ~ 110rpm; Soft district barrel zone temperature: 110 ~ 130 DEG C, in order to make the process of corn dry starch squeezing, maturing reach best effects, can be set to the working parameter of twin-screw extruder: rate of feeding: 45rpm, screw speed 100rpm, soft district barrel zone temperature 120 DEG C.
The following detailed description of once each component on the impact of product:
Hydrochloric acid addition is on the impact of product: along with the reduction of hydrochloric acid addition, viscosity improves gradually, and stability starts higher, after reduce gradually, viscosity affects comparatively large by hydrochloric acid addition, the hydrochloric acid addition as viscosity-depression agent is lower, and viscosity is higher; And the ageing resistance that viscosity increases rear starch reduces, stability reduces, and therefore, when hydrochloric acid addition is 1.4% ~ 1.6% of starch on dry basis weight, viscosity reaches about 250cp, and stability is 100%, meets product requirement.
Before the process of Corn Starch Blends squeezing, maturing, moisture is on the impact of product: along with the reduction of moisture content, viscosity raises rapidly, and stability first raises gradually, after occur again reducing largely, this is because, the pharmaceutical chemicals added can be made when moisture content is higher to penetrate into uniformly more rapidly, and starch granules is inner to react with starch molecule, especially the infiltration of hydrochloric acid can increase the degree of hydrolyzed starch molecular chain, and the moisture of abundance can make particle sufficient slaking in extrusion machine, ensure amount of cure and the homogeneity of particle, be conducive to fully carrying out smoothly of chemical reaction, but when moisture content is higher, the starch molecule of being discharged by extrusion machine also can crystallization again, occur aging, therefore when moisture content is higher, the stability of starch can reduction in various degree, and moisture content too low time, in extrusion process well can not there is slaking in starch, there is partial crystallization structure, also just well chemical reaction can not be there is, therefore stability also can be lower, found when the moisture content of squeezing, maturing is 32% ~ 34% by a large amount of tests, the range of viscosities of starch is 250 ~ 300, stability is 99%, meet product requirement.
The addition of Trisodium trimetaphosphate is on the impact of quality product: along with the raising of the addition of Trisodium trimetaphosphate, the viscosity of starch raises gradually, when the addition of Trisodium trimetaphosphate is greater than starch on dry basis weight 0.8%, reducing appears in viscosity, this is because Trisodium trimetaphosphate is a kind of linking agent, starch molecule is made to form network structure, when addition is lower, it serves bridging action between starch molecule, add viscosity and the stability of starch, and when addition is higher, crosslinked action strengthens, make between starch molecule, to form network structure closely, limit the dispersion of starch molecule in water, show as the reduction of starch viscosity and the reduction of stability, therefore, when Trisodium trimetaphosphate addition reaches 0.4% of starch on dry basis weight, the viscosity of biological latex is 245cp, stability reaches 99%.
Vinylformic acid addition is on the impact of quality product: along with acrylic acid addition improves gradually, viscosity increases sharply, and stability improves rapidly the higher level of rear maintenance, this is because, vinylformic acid and starch generation graft reaction, acrylic acid addition is higher, the quantity of hydrophilic radical access is more, the viscosity of biological latex is higher, and stability is determined by the aging of biological latex, it is more that hydrophilic radical accesses, resistance to deterioration is stronger, more be not easy again to occur by molecule or intermolecularly form hydrogen bond and recrystallization, therefore stability is better, therefore, when acrylic acid addition is 3% of starch on dry basis weight, the viscosity of biological latex is 253cp, stability reaches 99%.
Squeezing, maturing process is on the impact of quality product: along with the rising of squeezing, maturing temperature, viscosity reduces rapidly, more than 90 DEG C tend towards stability, and stability increases gradually with the raising of squeezing, maturing temperature, when reducing gradually higher than 85 DEG C later, this is because, the higher destruction to starch granules crystalline texture of temperature is more complete, the pharmaceutical chemicals added and the reaction of starch molecule more complete, show as the reduction of viscosity and the raising of stability, and when temperature is too high, except destroying except the crystalline texture of starch granules, also starch molecular chain can be interrupted, the viscosity of starch and stability is caused to reduce rapidly, therefore when squeezing, maturing temperature is about 80 DEG C, the viscosity of biological latex is 250cp, stability reaches 99%.
This handicraft product adopts hydrochloric acid to be hydrolyzed starch chain, and adjustment viscosity, improves stability; Adopt crosslinking reaction, make starch molecule chain bridging form network structure, reach and improve resistant to shearing stability, the object of gaining in strength; Adopt graft copolymerization of acrylic, access hydrophilic radical, add the polarity of this product, enhance wetting ability, add the water-retentivity of coating, due to polar molecule easier molecular orientation when being subject to shearing, show stronger pseudo-plasticity, after using this product, the pseudo-plasticity of coating strengthens, and mobility during high-shear is better, owing to there occurs graft reaction, the acid and alkali-resistance degree of this product is strengthened greatly, the needs of paper can be met.
The degradable biological latex obtained in the present embodiment is carried out respectively the mensuration of viscosity, the mensuration of whiteness, transparency mensuration, the mensuration of stability, the mensuration of moisture content, spot number detects and ash content detects, and can obtain technical indicator as shown in the table:
The concrete mensuration mode of each technical indicator above-mentioned is the content in the art known by those of ordinary skill, here repeats no more.
The main raw material of this Product Process is W-Gum, and China's corn resources enriches, and as renewable biological source, draws materials conveniently, biodegradable, pollution-free, and my company is as the production of corn starch business of largest domestic simultaneously, has great raw material advantage.
This Technology adopts extrusion process production technology.Extrusion technique is widely used in industry-by-industry at present, because it reacts at high temperature under high pressure, can destroy the crystalline texture of starch, make molecular chain fully stretch exposure, and be conducive to fully carrying out of chemical reaction, reaction efficiency is high; Owing to destroying the crystalline texture of starch, can make starch pregelatinated, degradable biological latex products can fully be dissolved in cold water, decreases thermal energy consumption during boiling compared with traditional starch class sizing agent; Because extrusion production technique is that final product is also solid to the modification of material under lower moisture content, do not produce " three wastes " discharge, belong to the product that clean environment firendly is produced.
This locating is pollution-free in exploitation, the petroleum base latex substitute-degradable biological latex of low cost, Functionality, quality and appealing design.Excellent rheological property when latex as coating adhesive use mainly provides upper machine to be coated with to papermaking, good coating water retention energy, provides excellent dry wet tenacity to paper, good printing performance.
Claims (7)
1. One-step production method for degradable biological latex, it is characterized in that: first corn dry starch is placed in mixing device, the hydrochloric acid of relative starch butt weight 1.4% ~ 1.6%, the solution of Trisodium trimetaphosphate of relative starch butt weight 0.3 ~ 0.5% and acrylic acid solution of relative starch butt weight 2 ~ 4% is sprayed into successively in mixing device, and mix with corn dry starch, spray into the hydrogen peroxide of relative starch butt weight 0.03 ~ 0.06% again, and mix formation Corn Starch Blends; Then 48 ~ 65 mesh sieve bodies are utilized to be sieved by above-mentioned Corn Starch Blends; The Corn Starch Blends that screening obtains is put into squeezing device and carries out squeezing, maturing process; Corn Starch Blends good for slaking is carried out successively pulverize, dry, cooling i.e. obtained degradable biological latex finished product.
2. One-step production method for degradable biological latex as claimed in claim 1, it is characterized in that: first corn dry starch is placed in mixing device, the hydrochloric acid of relative starch butt weight 1.5%, the solution of Trisodium trimetaphosphate of relative starch butt weight 0.4% and acrylic acid solution of relative starch butt weight 3% is sprayed into successively in mixing device, and mix with corn dry starch, spray into the hydrogen peroxide of relative starch butt weight 0.05% again, and mix formation Corn Starch Blends; Then 60 mesh sieve bodies are utilized to be sieved by above-mentioned Corn Starch Blends; The Corn Starch Blends that screening obtains is put into squeezing device and carries out squeezing, maturing process; Corn Starch Blends good for slaking is carried out successively pulverize, dry, cooling i.e. obtained degradable biological latex finished product.
3. One-step production method for degradable biological latex as claimed in claim 1 or 2, is characterized in that: described mixing device comprises double worm mixer.
4. One-step production method for degradable biological latex as claimed in claim 1 or 2, is characterized in that: described squeezing device comprises twin-screw extruder.
5. One-step production method for degradable biological latex as claimed in claim 4, is characterized in that: the working parameter of described twin-screw extruder is:
Rate of feeding: 40 ~ 50rpm; Screw speed: 90 ~ 110rpm; Kneading district barrel zone temperature: 110 ~ 130 DEG C.
6. One-step production method for degradable biological latex as claimed in claim 1, it is characterized in that: before the process of Corn Starch Blends squeezing, maturing, moisture weight content is 30 ~ 35%, slaking reaction district temperature is 70 ~ 90 DEG C.
7. One-step production method for degradable biological latex as claimed in claim 6, it is characterized in that: before the process of Corn Starch Blends squeezing, maturing, moisture weight content is 33%, slaking reaction district temperature is 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152011.7A CN103254446B (en) | 2013-04-27 | 2013-04-27 | One-step production method for degradable biological latex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152011.7A CN103254446B (en) | 2013-04-27 | 2013-04-27 | One-step production method for degradable biological latex |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103254446A CN103254446A (en) | 2013-08-21 |
| CN103254446B true CN103254446B (en) | 2015-01-07 |
Family
ID=48958689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310152011.7A Active CN103254446B (en) | 2013-04-27 | 2013-04-27 | One-step production method for degradable biological latex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103254446B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067897A (en) * | 1992-04-11 | 1993-01-13 | 福州大学 | The manufacture method of fo instant gel starch |
| CN1346832A (en) * | 2001-11-06 | 2002-05-01 | 华南理工大学 | Non-crystal granular starch and its preparing process |
| JP5409597B2 (en) * | 2008-03-07 | 2014-02-05 | 三栄源エフ・エフ・アイ株式会社 | Method for modifying starch and method for producing starch-containing preparation |
| CN102115551A (en) * | 2010-12-31 | 2011-07-06 | 永港伟方（北京）科技股份有限公司 | Starch-based nano biological latex and preparation method thereof |
-
2013
- 2013-04-27 CN CN201310152011.7A patent/CN103254446B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103254446A (en) | 2013-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6214624B2 (en) | Degradable materials derived from biological components | |
| CN102850706B (en) | Etherified-starch-grafted-copolymer super absorbent resin and preparation method thereof | |
| CN105858677B (en) | A kind of organobentonite and preparation method thereof | |
| CN103819614A (en) | Preparation method for alkali capacitive and high water-holding concrete internal curing material | |
| CN105542072A (en) | Internal curing agent suitable for concrete in strong alkaline environment and preparation method thereof | |
| CN105776576A (en) | Papermaking wastewater treating agent and preparing method thereof | |
| CN105778143A (en) | Foaming method for biodegradable starch-based foamed plastic | |
| CN103819615A (en) | Method of preparing starch-base highly-water-absorbent material by radiation | |
| CN107200513A (en) | A kind of preparation method of New Building Materials | |
| CN108658531A (en) | The manufacturing process of fiber cement board | |
| CN104231175B (en) | A kind of preparation method of etherification oxidation graft polyol converted starch | |
| CN104558687B (en) | A kind of special spherical calcium carbonate of stone paper and preparation method thereof | |
| CN104059672B (en) | A kind of environmentally friendly salt alkali resistance water preserving agent | |
| CN103254446B (en) | One-step production method for degradable biological latex | |
| CN104151627A (en) | Formula and preparation process of phosphate starch-vegetable gum copolymer film | |
| CN108003570A (en) | A kind of degradative plastics formula and preparation method thereof | |
| CN103992592B (en) | Secondary stock Wood-plastic material and preparation method thereof | |
| CN104312250A (en) | Glue used for blending plate putty powder | |
| CN108381727A (en) | It is a kind of to discard integrated wall plate and preparation method thereof prepared by sawdust with Liriodendron wood | |
| CN104211825B (en) | Micro water solid phase modifying method of gleditsia sinensis polysaccharide gum | |
| CN108239174A (en) | A kind of sulfonation composite modified starch | |
| CN106280842A (en) | A kind of quick-dry type wallpaper basement membrane and preparation method thereof | |
| CN107217521A (en) | A kind of low ink paper sludge and preparation method thereof | |
| CN110194806B (en) | Preparation method of cationic starch | |
| CN102617808A (en) | Environment-friendly composite high-water-absorptivity resin and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |