CN101935410B - Production technology of plasterboard modified starch - Google Patents
Production technology of plasterboard modified starch Download PDFInfo
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- CN101935410B CN101935410B CN2010101892652A CN201010189265A CN101935410B CN 101935410 B CN101935410 B CN 101935410B CN 2010101892652 A CN2010101892652 A CN 2010101892652A CN 201010189265 A CN201010189265 A CN 201010189265A CN 101935410 B CN101935410 B CN 101935410B
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Abstract
The invention discloses a production technology of plasterboard modified starch, comprising the following steps of mixing, degeneration reaction, neutralization reaction, physical synergism, screening, weighing and packaging. The invention combines the advantages of various modified starches, has the advantages of strong size film strength, transparency, good water absorption, good dispersion, good gliding property, low gelatinization temperature, strong paste liquid bond force, good adsorbability, easy dissolution, good film forming ability, weak retrogradation, good elasticity, smoothness, flexibility, tough and elastic size film, nontoxicity, tastelessness, safe use, convenient operation, large production scale, little investment, low energy consumption, less pollution, high production efficiency, stable and reliable product quality and the like and is widely applied to gypsum products.
Description
Technical field
The present invention relates to a kind of production technique of modified starch, more particularly relate to a kind of production technique of Thistle board modified starch.
Background technology
At present; For the Thistle board modified starch manufacturer of most country, be to utilize conventional wet explained hereafter modified starch basically, this technology fresh water consumption is big; The waste water COD of producing in the production process is high and salt content is heavy, causes serious pollution problem.And China modified starch manufacturing enterprise ubiquity small scale, equipment is outmoded, the production technique level is low, energy consumption is high, the manufacturing enterprise cost raises, and economic benefit is low, and product market competitiveness is not strong.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of with short production cycle, cost is low, the production technique of the Thistle board modified starch of less energy consumption.
The object of the invention is achieved through following technical proposals:
The present invention includes following steps:
1), mixes: at first starch is sent in the mixing tank; Start whisking appliance; With concentration be 10～15% account for starch weight 1～3% oxidising agent, concentration be 3～12% account for starch weight 2～3% an acidic catalyst spray into respectively in the mixing tank and mix 10～15min with starch, it is even then material to be sent in the high-speed mixer thorough mixing;
2), rd-: well-mixed material is sent in the feeding mouth of modified starch reacting by heating device; Regulate bed thickness to 3～6cm, 50～150 ℃ of temperature of reaction, reaction times 10～30min, keep material moisture content 10～12% with viscosity at 2～5mpa.s;
3), neutralization reaction: will be the starchy material of reacting by heating deliver in the composite machine of cooling in batches, when the temperature of treating starch dropped to 40 ℃, to spray into concentration be 4～10%, account for starch weight 1～3% in and blender, the pH value that makes starch is 7.0 ± 1.0;
4), physics synergy: in the modified starch material of neutralization reaction has been accomplished in cooling in the composite machine, add 1～3% the powder characteristic improving agent that accounts for starch weight, again thorough mixing 10～20min;
5), screening, weighing, packing: through the above-mentioned product that mixes, through aperture 100 purpose vibratory screening apparatuss, screening back weighing and bagging gets final product.
Described an acidic catalyst is one or more mixtures in nitric acid, sulfuric acid, hexanodioic acid, hydrochloric acid, phosphoric acid, the oxalic acid.
Described oxidising agent is one or more mixtures in Lucidol, sodiumperoxide, hydrogen peroxide, Potassium Persulphate, potassium permanganate, the ammonium persulphate.
In described with blender be one or more mixtures in Pottasium Hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, water glass, Starso, sodium metaaluminate, the triethanol ammonium.
Described powder characteristic improving agent is one or more mixtures in yellow prussiate of potash, sodium silicoaluminate, tricalcium phosphate, silicon-dioxide, Microcrystalline Cellulose, oxalic acid, the urea.
Said modified starch reacting by heating device is microwave and far-infrared heating reaction unit.
The present invention utilizes starch to handle for main raw material carries out verivate, and starch can be corn, yam, cassava, wheat etc., especially preferred W-Gum.The present invention use oxidising agent, an acidic catalyst, in and blender, powder characteristic improving agent, its product has fused the advantage of multiple modified starch, serous coat is powerful high, transparent, good water absorption; Good dispersivity, smoothness is good, and gelatinization point is low, and paste liquid cohesive force is strong; Excellent adsorption is prone to dissolving, and good film-forming property is a little less than the retrogradation property; Good springiness, smoothly pliable and tough, serous coat is tough and tensile flexible, has nonpoisonous and tasteless; Safe in utilization, advantage such as easy to operate is widely used in plastering, is the most desirable at present effectively plasterboard goods toughener.And invest little, the cost energy consumption is low, it is little to pollute.The patent No. of the starch reacting by heating device that the present invention uses is ZL200820065181.6; Be a kind of microwave and far infrared device; It utilizes microwave to the continuous change frequency of aqueous starch polar molecule with per second tens00000000 times, produces HF oscillation, causes the relative movement between the molecule; Produce similar friction, collision, squeezing action, make the place maximum system energy increase and be rapidly heated.Utilize the strong radiation function of electromagnetic infrared wave simultaneously; To the further insulating synergistic in whole microwave cavity space; Make whole process because the modified starch production of having taken on a new look traditional only singly relies on the normal mode of transmission of heat by convection, effectively improve the thermo-efficiency of reaction accomplishing the sex change of starch under the condition smoothly efficiently, fast; Make and originally want several hrs, even tens hours reaction process shortens to 10～30min and can accomplish.
Embodiment
Through several more detailed specific embodiments, technical scheme and the technology work of inventing proved absolutely below, but the invention restriction of not opposing, in these embodiment, each raw material is with listed as parts by weight.
Embodiment 1:
Ative starch is added in the mixing tank for 1000 parts, starts agitator motor, it is 25 parts of 10% dilute hydrochloric acid that spray adds concentration and concentration is 20 parts of 10%～27.5% hydrogen peroxide; Normal temperature condition stirs 10～15min down, behind the high-speed mixer thorough mixing, sends into the feeding mouth place of microwave far infrared apparatus then, regulates bed thickness 3～6cm; Open the microwave far infrared apparatus; Regulate the material temperature at 50～150 ℃, keep 10～30min, detect moisture content 10～12% with viscosity after the index of 2～5mpa.s reaches the specified requirement value; Again this material is put into the composite machine of cooling when treating that temperature drops to below 40 ℃; Spray into concentration and be and add 5～10 parts of Microcrystalline Celluloses again after 4%～10% potassium hydroxide solution 10 parts (including 5 parts of methyl alcohol) mixes, the packing of can sieving behind thorough mixing 10～20min, the present invention's product.
Embodiment 2:
Ative starch is added in the mixing tank for 1000 parts, starts agitator motor, it is 18 parts of 12% dilute hydrochloric acid that spray adds concentration; Concentration is 10 parts of 12% ammonium persulphates; Stirring at normal temperature 10～15min, subsequent handling is 1 identical with example, to after to spray into concentration be to add 6～12 parts of silicon-dioxide again after 10% sodium hydroxide solution 5～10 parts (containing 5 parts of methyl alcohol) mixes; The packing of can sieving behind thorough mixing 10～20min, the present invention's product.
Embodiment 3:
Ative starch is added in the mixing tank for 1000 parts, starts agitator motor, to add concentration be 15 parts of 5% dilute sulphuric acids in spray then; Concentration is 10 parts of 10% hydrogen peroxide, stirring at normal temperature 10～15min, and subsequent handling is identical with example 1; To after to spray into concentration be 15 parts of 9% sodium silicate solutions; Add 12 parts of silicon-dioxide after mixing again, the packing of can sieving behind thorough mixing 10～20min, the present invention's product.
The resulting modified starch of above embodiment is mainly used in the interpolation of Thistle board, and it is as shown in the table for its salient features (product standard with domestic certain well-known paper enterprise is an example)
The result shows: the salient features of Thistle board starch of the present invention meets or exceeds Thistle board and uses enterprise's specified standards and performance requriements, and desirable through producer's result of use.With regard to the present invention's Thistle board is starch specialized; Belong to domestic initiation,, can easily adjust the proportioning of material according to requirement of products and performance and actual needs; Change the working parameter and the processing parameter of microwave far infrared apparatus, the Thistle board of preparing excellent performance simply is starch specialized.
The result shows: Thistle board modified starch of the present invention is through check; Each characteristic index, performance reach each item physics and chemistry and the request for utilization of Thistle board manufacturer to modified starch fully, and just the present invention's Thistle board sex change belongs to domestic initiation; According to requirement of products and performance and actual needs; Can easily adjust the proportioning of material, change the working parameter and the processing parameter of microwave far infrared apparatus, prepare the Thistle board modified starch product of excellent performance simply.
Claims (4)
1. the production technique of a Thistle board modified starch is characterized in that: may further comprise the steps:
1), mixes: at first starch is sent in the mixing tank; Start whisking appliance; With concentration be 10～15% account for starch weight 1～3% oxidising agent, concentration be 3～12% account for starch weight 2～3% an acidic catalyst spray in the mixing tank and mix 10～15min with starch, it is even then material to be sent in the high-speed mixer thorough mixing;
2), rd-: well-mixed material is sent in the feeding mouth of modified starch reacting by heating device; Regulate bed thickness to 3～6cm, 50～150 ℃ of temperature of reaction, reaction times 10～30min; Keep material moisture content 10～12% with viscosity at 2～5mPas, said modified starch reacting by heating device is microwave and far-infrared heating reaction unit;
3), neutralization reaction: will be the starchy material of reacting by heating deliver in the composite machine of cooling in batches, when the temperature of treating starch drops to 40 ℃, spray into concentration and be 4～10% account for starch weight 1～3% in and blender, the pH value that makes starch is 7.0 ± 1.0;
4), physics synergy: in the modified starch material of neutralization reaction has been accomplished in cooling in the composite machine, add 1～3% the powder characteristic improving agent that accounts for starch weight; Thorough mixing 10～20min again, described powder characteristic improving agent is one or more mixtures in yellow prussiate of potash, sodium silicoaluminate, tricalcium phosphate, silicon-dioxide, Microcrystalline Cellulose, oxalic acid, the urea;
5), screening, weighing, packing: through the above-mentioned product that mixes, through aperture 100 purpose vibratory screening apparatuss, screening back weighing and bagging gets final product.
2. production technique according to claim 1 is characterized in that: described an acidic catalyst is one or more mixtures in nitric acid, sulfuric acid, hexanodioic acid, hydrochloric acid, phosphoric acid, the oxalic acid.
3. production technique according to claim 1 is characterized in that: described oxidising agent is one or more mixtures in Lucidol, sodiumperoxide, hydrogen peroxide, Potassium Persulphate, potassium permanganate, the ammonium persulphate.
4. production technique according to claim 1 is characterized in that: in described with blender be one or more mixtures in Pottasium Hydroxide, sodium hydroxide, calcium hydroxide, yellow soda ash, water glass, Starso, sodium metaaluminate, the trolamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101892652A CN101935410B (en) | 2010-05-27 | 2010-05-27 | Production technology of plasterboard modified starch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101892652A CN101935410B (en) | 2010-05-27 | 2010-05-27 | Production technology of plasterboard modified starch |
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| CN101935410A CN101935410A (en) | 2011-01-05 |
| CN101935410B true CN101935410B (en) | 2012-04-11 |
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| CN2010101892652A Expired - Fee Related CN101935410B (en) | 2010-05-27 | 2010-05-27 | Production technology of plasterboard modified starch |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104262495A (en) * | 2014-08-27 | 2015-01-07 | 殷霞 | Gypsum plaster board modified starch and production method thereof |
| CN107586402A (en) * | 2017-09-27 | 2018-01-16 | 山东神州翔宇科技集团有限公司 | A kind of preparation method of compound type starch |
| CN108129578B (en) * | 2017-12-01 | 2021-01-08 | 杭州纸友科技有限公司 | Production method of modified starch for thermal transfer printing paper |
| WO2021016860A1 (en) * | 2019-07-30 | 2021-02-04 | 北新集团建材股份有限公司 | Paper faced gypsum board and preparation method therefor |
| CN113493527A (en) * | 2021-06-30 | 2021-10-12 | 天津晟富科技有限公司 | Method for preparing material for preventing excessive water absorption on surface of water-resistant gypsum board |
| CN114920535B (en) * | 2022-06-27 | 2023-04-07 | 阜新泰山石膏建材有限公司 | Paper-surface gypsum board and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314646A (en) * | 2008-07-18 | 2008-12-03 | 云南烟草科学研究院 | Modified starch particle, preparation and application thereof |
| CN101314645A (en) * | 2008-07-18 | 2008-12-03 | 云南烟草科学研究院 | Colorful modified starch particle, preparation and application thereof |
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| US20060188631A1 (en) * | 2005-02-18 | 2006-08-24 | Kyungsoo Woo | Pregelatinized chemically modified resistant starch products and uses thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314646A (en) * | 2008-07-18 | 2008-12-03 | 云南烟草科学研究院 | Modified starch particle, preparation and application thereof |
| CN101314645A (en) * | 2008-07-18 | 2008-12-03 | 云南烟草科学研究院 | Colorful modified starch particle, preparation and application thereof |
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