CN104262495A - Gypsum plaster board modified starch and production method thereof - Google Patents
Gypsum plaster board modified starch and production method thereof Download PDFInfo
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- CN104262495A CN104262495A CN201410445877.1A CN201410445877A CN104262495A CN 104262495 A CN104262495 A CN 104262495A CN 201410445877 A CN201410445877 A CN 201410445877A CN 104262495 A CN104262495 A CN 104262495A
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Abstract
The invention provides a gypsum plaster board modified starch and a production method thereof. The gypsum plaster board modified starch comprises the following components: starch, hydrochloric acid, ammonium persulfate and alkaline pH value modifier; the production method comprises the following steps: (1) adding starch into a reaction container of 50DEG C-70DEG C, and adding hydrochloric acid of corresponding proportion; (2) adding a proper amount of water into the ammonium persulfate of corresponding proportion to prepare an ammonium persulfate water solution, and then adding into the reaction container; (3) reacting the materials for 100-150 minutes; (4) when the viscosity meets the requirement, immediately adding the alkaline pH modifier for neutralization, stirring for 15-20 minutes, and controlling the pH of the product to be 5-8; and (5) discharging the product, cooling, sieving and bagging. According to the gypsum plaster board modified starch and the production method thereof, the traditional wet-process production technology is changed by adopting dry-process semi-dry process production technology, and the defects that the dry process cannot perform continuous production, the product is extremely instable can be overcome. Through the technology, large-scale industrial production is performed, the old production technology is thoroughly changed, so that the gypsum plaster board modified starch and the production method thereof are worthy of popularization.
Description
Technical field
The present invention relates to modified starch and production method technical field thereof, be specially a kind of plasterboard modified starch and production method thereof.
Background technology
Plasterboard modified starch, is widely used in the bonding of mask paper and gypsum, environmental friendly regenerated with it, cheap feature favor by building materials industry.But its existing production is the wet production of high investment high pollution mostly, or the what is called of small workshop mode can not continuous prodution, and unstable " dry method " produces.
Chinese patent discloses a kind of particulate waterproof corrugated board (publication number CN 1449913A), be made up of some layers of kraft Liner board and the Corrugating Base Paper be located at respectively between kraft Liner board, kraft Liner board and Corrugating Base Paper are through immersion oil damp-proof treatment, adopt nanometer grade calcium carbonate particulate binder to bond between kraft Liner board and Corrugating Base Paper, every percent by weight proportioning of its nanometer grade calcium carbonate particulate binder is: nanometer grade calcium carbonate 2.5-3.5; W-Gum 10-20; Modified starch 1.5-2.5; Sheet alkali 0.2-0.6; Borax 0.2-0.4; Add water appropriate.But its manufacturing process is complicated, expensive starting materials, and production cost is high, product quality is unstable, is unfavorable for using greatly on a large scale for Thistle board manufacture.
Summary of the invention
Technical problem solved by the invention is to provide a kind of plasterboard modified starch and production method thereof, to solve the problem in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions: a kind of plasterboard modified starch, its composition comprises: starch, hydrochloric acid, ammonium persulphate, alkaline ph value conditioning agent, and concrete formula is made up of the raw material of following weight part: starch 80-150 part, hydrochloric acid 0.5-1.5 part, ammonium persulphate 0.1-0.5 part, alkaline ph value conditioning agent 0.5-1.5 part.
The preferred weight number of each component is:
Starch 100 parts, hydrochloric acid 0.5 part, ammonium persulphate 0.1 part, alkaline ph value conditioning agent 0.5 part.
The preferred weight number of each component is:
Starch 100 parts, hydrochloric acid 1.5 parts, ammonium persulphate 0.5 part, alkaline ph value conditioning agent 1.5 parts.
Described hydrochloric acid is the hydrochloric acid of degree Beaume 16-20.
Described alkaline ph value conditioning agent is dry powder or sierozem power.
Described starch is selected from yam starch, tapioca (flour), common corn starch, rye starch, wheat starch, oat starch.
A production method for plasterboard modified starch, comprises the following steps: it is in the reaction vessel of 50 DEG C-70 DEG C that starch is added temperature by (1), adds the hydrochloric acid of corresponding proportioning;
(2) ammonium persulphate of corresponding proportioning is added suitable quantity of water, be configured to ammonium persulfate aqueous solution, add in reaction vessel afterwards;
(3) by after above-mentioned material reaction 100-150 minute, from retort, get 50g reactive material add 135ml water dilution dissolving, add 30% concentration liquid caustic soda 18ml again, pour " being coated with-4 " cup after plastic when 30 DEG C-35 DEG C into and survey its viscosity, controlling its viscosity is " being coated with-4 " cup 80-180 second, if first time sampling records viscosity and is greater than required viscosity, then continue reaction.
(4) after its viscosity meets the requirements, add alkaline ph value conditioning agent immediately and neutralize, stir 15-20 minute, controlling product P H value is 5-8.
(5) product blowing will be obtained, cool, sieve, dress bag.
Described dilute hydrochloric acid, the total Water of ammonium persulphate makes product moisture be 8-16%, if moisture does not reach requirement, uses interchanger to carry out airflow drying.
Described liquid caustic soda concentration is weight ratio 30%.
Described modified starch is used for Thistle board.
Compared with public technology, there is following advantage in the present invention: the present invention adopts dry method Semi-dry process technology to change the production technique of conventional wet height water consumption, high blowdown, and overcoming what is called " dry method " can not continuous prodution, the defect of product extremely unstable.This technique now large-scale industrial production, revolutionizes old production technique, is worthy to be popularized.
Embodiment
Object is reached and effect is easy to understand in order to make technique means of the present invention, creation characteristic, workflow, using method, below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
2000kg starch is dropped in the reaction vessel of temperature 50 C, add the hydrochloric acid that 15kg degree Beaume is 18, then 10kg water dissolution 3kg ammonium persulphate is used, add in starch, react 100 minutes, from retort, get 50g reactive material afterwards add 135ml water dilution dissolving, then add 30% concentration liquid caustic soda 18ml, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity.
This product viscosity is " being coated with-4 " cup 180 seconds after testing, then continue reaction 8 minutes afterwards, from retort, get 50g reactive material again add 135ml water dilution dissolving, add 30% concentration liquid caustic soda 18ml again, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity, this product viscosity is " being coated with-4 " cup 120 seconds after testing, then adds 20kg dry powder and neutralizes, stir 15 minutes, control product P H value 7; Now making product moisture be weight ratio is 13%, last, blowing, carries out cooling, sieves, fills bag.
Embodiment 2
2000kg starch is dropped in the reaction vessel of temperature 60 C, add the hydrochloric acid that 12kg degree Beaume is 18, then 12kg water dissolution 3kg ammonium persulphate is used, add in starch, react 100 minutes, from retort, get 50g reactive material afterwards add 135ml water dilution dissolving, then add 30% concentration liquid caustic soda 18ml, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity.
This product viscosity is " being coated with-4 " cup 170 seconds after testing, then continue reaction 6 minutes afterwards, from retort, get 50g reactive material add 135ml water dilution dissolving, add 30% concentration liquid caustic soda 18ml again, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity, this product viscosity is " being coated with-4 " cup 120 seconds after testing, then adds 15kg dry powder and neutralizes, stir 15 minutes, control product P H value 8; Now making product moisture be weight ratio is 14%, last, blowing, carries out cooling, sieves, fills bag.
Embodiment 3
2000kg starch is dropped in the reaction vessel of temperature 70 C, add the hydrochloric acid that 12kg degree Beaume is 19, then 10kg water dissolution 4kg ammonium persulphate is used, add in starch, react 100 minutes, from retort, get 50g reactive material afterwards add 135ml water dilution dissolving, then add 30% concentration liquid caustic soda 18ml, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity.
This product viscosity is " being coated with-4 " cup 160 seconds after testing, then adds 15kg dry powder and neutralizes, stir 15 minutes, control product P H value 8; Now making product moisture be weight ratio is 12%, last, blowing, carries out cooling, sieves, fills bag.
Embodiment 4
2000kg starch is dropped in the reaction vessel of temperature 70 C, add the hydrochloric acid that 15kg degree Beaume is 19, then 10kg water dissolution 5kg ammonium persulphate is used, add in starch, react 100 minutes, from retort, get 50g reactive material afterwards add 135ml water dilution dissolving, then add 30% concentration liquid caustic soda 18ml, 30 DEG C time, pour " being coated with-4 " cup after plastic into survey its viscosity.
This product viscosity is " being coated with-4 " cup 100 seconds after testing, then adds 20kg dry powder and neutralizes, stir 15 minutes, control product P H value 7; Now making product moisture be weight ratio is 12%, and using interchanger to carry out airflow drying, to obtain product moisture for weight ratio be the product of 10%, last, blowing, carries out cooling, sieves, fills bag.
Painting-4 glasss described in above embodiment is pressed GB/T 1723-93 and is designed, and is applicable to the specific viscosity (elution time is not more than 150 seconds) measuring coating and other related products.Under certain temperature condition, measure the time that quantitative sample all flows out from the hole of specified diameter, represent with S.The key technical indexes: capacity: 100 ± 1ml, internal diameter: 49.5 ± 0.2mm, inner cone angle: 81 ° ± 15 ', let slip a remark: long 4 ± 0.02mm, nozzle aperture internal diameter: 4 ± 0.02mm.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. a plasterboard modified starch, its composition comprises: starch, hydrochloric acid, ammonium persulphate, alkaline ph value conditioning agent, is characterized in that: concrete formula is made up of the raw material of following weight part: starch 80-150 part, hydrochloric acid 0.5-1.5 part, ammonium persulphate 0.1-0.5 part, alkaline ph value conditioning agent 0.5-1.5 part.
2. plasterboard modified starch according to claim 1, is characterized in that: described each composition weight number is: starch 100 parts, hydrochloric acid 0.5 part, ammonium persulphate 0.1 part, alkaline ph value conditioning agent 0.5 part.
3. plasterboard modified starch according to claim 1, is characterized in that: described each composition weight number is: starch 100 parts, hydrochloric acid 1.5 parts, ammonium persulphate 0.5 part, alkaline ph value conditioning agent 1.5 parts.
4. according to the plasterboard modified starch in claim 1-3 described in any one, it is characterized in that: described hydrochloric acid is the hydrochloric acid of degree Beaume 16-20.
5. according to the plasterboard modified starch in claim 1-3 described in any one, it is characterized in that: described alkaline ph value conditioning agent is dry powder or sierozem power.
6. according to the plasterboard modified starch in claim 1-3 described in any one, it is characterized in that: described starch is selected from yam starch, tapioca (flour), common corn starch, rye starch, wheat starch, oat starch.
7. a production method for plasterboard modified starch, is characterized in that: comprise the following steps: it is in the reaction vessel of 50 DEG C-70 DEG C that starch is added temperature by (1), adds the hydrochloric acid of corresponding proportioning;
(2) ammonium persulphate of corresponding proportioning is added suitable quantity of water, be configured to ammonium persulfate aqueous solution, add in reaction vessel afterwards;
(3) by after above-mentioned material reaction 100-150 minute, from retort, get 50g reactive material add 135ml water dilution dissolving, add 30% concentration liquid caustic soda 18ml again, pour " being coated with-4 " cup after plastic when 30 DEG C-35 DEG C into and survey its viscosity, controlling its viscosity is " being coated with-4 " cup 80-180 second, if first time sampling records viscosity and is greater than required viscosity, then continue reaction;
(4) after its viscosity meets the requirements, add alkaline ph value conditioning agent immediately and neutralize, stir 15-20 minute, controlling product P H value is 5-8;
(5) product blowing will be worth, cool, sieve, dress bag.
8. plasterboard modified starch according to claim 7, it is characterized in that: described dilute hydrochloric acid, the total Water of ammonium persulphate makes product moisture be 8-16%, if moisture does not reach requirement, interchanger carries out airflow drying, described liquid caustic soda concentration is weight ratio 30% in use.
9. a plasterboard modified starch, is characterized in that: described modified starch is used for Thistle board.
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| CN201410445877.1A CN104262495A (en) | 2014-08-27 | 2014-08-27 | Gypsum plaster board modified starch and production method thereof |
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| CN201410445877.1A CN104262495A (en) | 2014-08-27 | 2014-08-27 | Gypsum plaster board modified starch and production method thereof |
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| CN104262495A true CN104262495A (en) | 2015-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| US3973985A (en) * | 1974-06-03 | 1976-08-10 | Anheuser-Busch, Incorporated | Starch product by further oxidizing oxidized starch with ammonium persulfate |
| CN1033634A (en) * | 1988-12-27 | 1989-07-05 | 曹堃 | Preparing method for modified corn starch |
| CN101456917A (en) * | 2008-11-26 | 2009-06-17 | 杭州纸友科技有限公司 | High efficiency and clean production method of oxidized starch |
| CN101775161A (en) * | 2009-01-12 | 2010-07-14 | 四川省蓬溪县弘桥实业有限公司 | Process for producing modified starch by using microwave far infrared method |
| CN101935410A (en) * | 2010-05-27 | 2011-01-05 | 四川省蓬溪县弘桥实业有限公司 | Production technology of plasterboard modified starch |
| CN102329581A (en) * | 2011-08-02 | 2012-01-25 | 张家港市鹿苑淀粉厂 | Starch adhesive for compounding paperboards and preparation method thereof |
| KR20130046279A (en) * | 2011-10-27 | 2013-05-07 | 주식회사 삼양제넥스 | Preparation of a surface-sizing composition with high solid content |
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2014
- 2014-08-27 CN CN201410445877.1A patent/CN104262495A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973985A (en) * | 1974-06-03 | 1976-08-10 | Anheuser-Busch, Incorporated | Starch product by further oxidizing oxidized starch with ammonium persulfate |
| CN1033634A (en) * | 1988-12-27 | 1989-07-05 | 曹堃 | Preparing method for modified corn starch |
| CN101456917A (en) * | 2008-11-26 | 2009-06-17 | 杭州纸友科技有限公司 | High efficiency and clean production method of oxidized starch |
| CN101775161A (en) * | 2009-01-12 | 2010-07-14 | 四川省蓬溪县弘桥实业有限公司 | Process for producing modified starch by using microwave far infrared method |
| CN101935410A (en) * | 2010-05-27 | 2011-01-05 | 四川省蓬溪县弘桥实业有限公司 | Production technology of plasterboard modified starch |
| CN102329581A (en) * | 2011-08-02 | 2012-01-25 | 张家港市鹿苑淀粉厂 | Starch adhesive for compounding paperboards and preparation method thereof |
| KR20130046279A (en) * | 2011-10-27 | 2013-05-07 | 주식회사 삼양제넥스 | Preparation of a surface-sizing composition with high solid content |
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| 李兆丰: "淀粉基木材胶粘剂的制备及其性能研究", 《中国优秀博硕士学位论文全文数据库（硕士）工程科技Ⅰ辑》 * |
| 杨文纬等: "《GB/T1723-93 涂料粘度测定法》", 20 March 1993 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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