CN106316158A - Method for preparing impregnating compound from compound modified tapioca starch - Google Patents
Method for preparing impregnating compound from compound modified tapioca starch Download PDFInfo
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- CN106316158A CN106316158A CN201610768936.8A CN201610768936A CN106316158A CN 106316158 A CN106316158 A CN 106316158A CN 201610768936 A CN201610768936 A CN 201610768936A CN 106316158 A CN106316158 A CN 106316158A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/321—Starch; Starch derivatives
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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
- C08B31/02—Esters
- C08B31/04—Esters of organic acids, e.g. alkenyl-succinated 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
- C08B31/02—Esters
- C08B31/06—Esters of inorganic acids
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- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
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- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a method for preparing an impregnating compound from compound modified tapioca starch and belongs to the technical field of preparation of impregnating compounds. Firstly, tapioca starch is modified with ammonia water, boric acid and 2-naphthalene sulfonic acid sodium, modified tapioca starch is obtained and then mixed with glucose and urea, the mixture is inoculated with Aspergillus oryzae for culture, compound modified tapioca starch is obtained, finally, the compound modified tapioca starch is mixed with distilled water and heated for gelatinization, polyvinyl alcohol, hydrogenated castor oil and other substances are added, and the impregnating compound can be obtained. The impregnating speed of the prepared impregnating compound is high, the impregnating effect is good, the advancing contact angle is 55.41-72.15 degrees, and the surface tension reaches 43.42-54.32 mN*m<-1>. Raw materials are easy to obtain, and the preparation technology is simple and can be widely applied to fields of glass fibers and the like.
Description
Technical field
The present invention relates to a kind of method utilizing composite modified tapioca to prepare wetting agent, belong to wetting agent technology of preparing
Field.
Background technology
Glass fibre, because its good mechanical performance and physical property are used for producing composite widely, is application
Widest reinforcing material.For certain glass fibre and resin matrix, interface be affect composite property main because of
Element.Fiberglass surfacing is smooth and presents chemical inertness, surface can be low, as during the reinforcement of polymer matrix composites and resin
Between combination bad, the composite prepared is difficult to give full play of the mechanical property that fiberglass fibers is excellent.Composite wood
The performance of material depends greatly on the wellability of the interface cohesion degree of fiber and matrix resin, fiber and matrix resin
Being one of most critical factor affecting composite property with bonding interface, this is also the focus of current fiber art research.
Under normal circumstances, wetting agent is made up of many materials such as film former, coupling agent, antistatic additive, and film former is infiltration
The key component of agent, not only plays boundling, cementation, also determines glass adding when fiberglass reinforced plastics molding precursor
Work performance, also determines the film property of wetting agent and the affinity to fiberglass surfacing, the film former system of excellent performance simultaneously
The wetting agent become can form, at fiber surface, the film that intensity is high, soft, wear-resisting, and combines together with fiberglass surfacing.
The wetting agent used the earliest is paraffin sizing material, and this wetting agent is difficult to move back solution, but the color fixing agent in formula is warm
Clean difficulty so that the glass fibre made turns to be yellow or produces obvious brown stripes, reduces product specification.Afterwards, along with glass
The development of glass Fiber strength technology, engenders that employing starch is as wetting agent.But unmodified starch is due to gelatinizing
The shortcomings such as temperature is high, viscosity is uneven, film property is poor, and character is unstable cannot use as film former, and hydroxypropylation changes
Starch after property, due to the distinctive hydrophilic of hydroxypropyl, improves the starch performance as film former, and hydroxypropylation degree is more
Height, its film property and the best with the fusion performance of fiberglass surfacing, but owing to the crystalline texture of starch is unfavorable for chemistry examination
The efficiency of the infiltration of agent and reaction, especially etherification reaction is the lowest.
Summary of the invention
The technical problem to be solved: the wetting agent prepared for the starch utilizing hydroxypropylation modified is unfavorable
Extremely low in infiltration and the reaction of chemical reagent, the especially efficiency of etherification reaction, the problem that have impact on wet-out rate, this
Bright first with ammonia, boric acid and 2-sodium naphthalene sulfonate, tapioca is modified after, obtain modified tapioca starch, then by its with
After glucose, carbamide are stirred mixing, inoculate aspergillus oryzae to it, cultivate, obtain composite modified tapioca, finally will
After it mixes with distilled water, carry out Heat Gelatinization, then add the material such as polyvinyl alcohol and castor oil hydrogenated, i.e. can be infiltrated
Agent, wetting agent wet-out rate prepared by the present invention is fast, and effect of impregnation is good, improves its surface tension.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) count by weight, take 35～40 portions of tapiocas, 18～20 parts of mass fractions are 15% ammonia, 12～14 parts of boron
Acid and 0.2～0.4 part of 2-sodium naphthalene sulfonate, put in the there-necked flask with agitator, thermometer and reflux, be placed in water
In bath, using nitrogen protection, design temperature is 85～90 DEG C, stirs 3～6h with 120r/min；
(2) after above-mentioned stirring terminates, naturally cool to room temperature, then there-necked flask be placed in cold room, design temperature be 4～
6 DEG C, freezing 30～50min, subsequently the mixture in there-necked flask is put in spray dryer and be dried, collect dried object, press
Mass ratio 1:3, mixs homogeneously dried object with 1.6mol/L ethanol solution, be positioned in ultrasonator sonic oscillation 10～
Filter after 15min, filtering residue is air-dried and pulverizes, cross 200 mesh sieves, obtain modified tapioca starch；
(3) count by weight, take 30～40 parts of above-mentioned modified tapioca starch, 11～13 parts of mass fractions are that 10% glucose is molten
Liquid and 2～3 parts of carbamide, stir, put in container, by inoculum concentration 10～15%, is added to container by aspergillus oryzae, and will
Container moves in constant incubator, and design temperature is 26～30 DEG C, with 120rpm shaken cultivation 9～12h；
(4) after above-mentioned cultivation terminates, the mixture in container is carried out lyophilization, collect dried object, and with uviol lamp pair
It carries out sterilizing, obtains composite modified tapioca；
(5) count by weight, take 50～60 parts of distilled water, 20～25 parts of above-mentioned composite modified tapiocas, 6～9 parts of poly-second
Enol, 4～6 parts of castor oil hydrogenated, 0.6～0.9 part of polyethenoxy ether and 0.5～0.9 part of polydimethylsiloxane, first will steam
Distilled water and above-mentioned composite modified tapioca are put in heater, are heated to 80～85 DEG C, with 110r/min stirring gelatinizing 1～
2h, is separately added into the polyvinyl alcohol of above-mentioned parts by weight, castor oil hydrogenated, polyethenoxy ether and polydimethylsiloxane subsequently,
Continue stirring 4～6h, then stop agitating heating, stand 1～2h, wetting agent.
The application process of the present invention: 2:1 in mass ratio, mixes the wetting agent that deionized water is prepared with the present invention and is placed on
In solution tank, then by glass fibre with 7～10m/s speed by solution tank, then carry out frictioning process, the most again with 5～
The speed of 7m/s will be by equipped with the rinse bath that mass fraction is 25% ethanol solution, the glass fibre after being processed, finally
Glass fibre after process is placed in the vacuum drying oven that temperature is 110～120 DEG C and is dried 5～8min, the glass after being infiltrated
Fiber.After testing, its advancing contact angle is 55.41～72.15 °, and surface tension reaches 43.42～54.32mN m-1。
The present invention is compared with additive method, and Advantageous Effects is:
(1) the wetting agent wet-out rate that prepared by the present invention is fast, and effect of impregnation is good, and its advancing contact angle is 55.41～72.15 °, table
Surface tension reaches 43.42～54.32mN m-1；
(2) wetting agent that prepared by the present invention uses starch to carry out composite modified, and raw material obtains simple, and preparation technology is simple, can
It is widely used in the fields such as glass fibre.
Detailed description of the invention
Count the most by weight, take 35～40 portions of tapiocas, 18～20 parts of mass fractions are 15% ammonia, 12～14
Part boric acid and 0.2～0.4 part of 2-sodium naphthalene sulfonate, put in the there-necked flask with agitator, thermometer and reflux, juxtaposition
In water-bath, using nitrogen protection, design temperature is 85～90 DEG C, stirs 3～6h with 120r/min；Terminate in above-mentioned stirring
After, naturally cooling to room temperature, then there-necked flask is placed in cold room, design temperature is 4～6 DEG C, freezing 30～50min, with
After the mixture in there-necked flask put in spray dryer and is dried, collect dried object, in mass ratio 1:3, by dried object with
1.6mol/L ethanol solution mix homogeneously, is positioned in ultrasonator and filters after sonic oscillation 10～15min, air-dried by filtering residue
And pulverize, cross 200 mesh sieves, obtain modified tapioca starch；Count the most by weight, take 30～40 parts of above-mentioned modified tapioca starch, 11
～13 parts of mass fractions are 10% glucose solution and 2～3 parts of carbamide, stir, put in container, by inoculum concentration 10～
15%, aspergillus oryzae is added to container, and container is moved in constant incubator, design temperature is 26～30 DEG C, with
120rpm shaken cultivation 9～12h；After above-mentioned cultivation terminates, the mixture in container is carried out lyophilization, collect and be dried
Thing, and with uviol lamp, it is carried out sterilizing, obtain composite modified tapioca；Finally count by weight, take 50～60 parts
Distilled water, 20～25 portions of above-mentioned composite modified tapiocas, 6～9 parts of polyvinyl alcohol, 4～6 parts of castor oil hydrogenated, 0.6～0.9
Part polyethenoxy ether and 0.5～0.9 part of polydimethylsiloxane, first put into distilled water and above-mentioned composite modified tapioca
In heater, it is heated to 80～85 DEG C, stirs gelatinizing 1～2h with 110r/min, be separately added into the poly-of above-mentioned parts by weight subsequently
Vinyl alcohol, castor oil hydrogenated, polyethenoxy ether and polydimethylsiloxane, continue stirring 4～6h, then stop agitating heating, quiet
Put 1～2h, wetting agent.
Example 1
Count the most by weight, take 40 portions of tapiocas, 20 parts of mass fractions are 15% ammonia, 14 parts of boric acid and 0.4 part of 2-
Sodium naphthalene sulfonate, puts in the there-necked flask with agitator, thermometer and reflux, is placed in water-bath, uses nitrogen
Protection, design temperature is 90 DEG C, stirs 6h with 120r/min；After above-mentioned stirring terminates, naturally cool to room temperature, then by three mouthfuls
Flask is placed in cold room, and design temperature is 6 DEG C, freezing 50min, subsequently the mixture in there-necked flask is put into spray drying
Machine is dried, collects dried object, in mass ratio 1:3, dried object is mixed homogeneously with 1.6mol/L ethanol solution, is positioned over ultrasonic
Agitator filters after sonic oscillation 15min, filtering residue is air-dried and pulverizes, cross 200 mesh sieves, obtain modified tapioca starch；Again by weight
Amount number meter, takes 40 parts of above-mentioned modified tapioca starch, 13 parts of mass fractions are 10% glucose solution and 3 parts of carbamide, and stirring is all
Even, put in container, by inoculum concentration 15%, aspergillus oryzae is added to container, and container is moved in constant incubator, set
Temperature is 30 DEG C, with 120rpm shaken cultivation 12h；After above-mentioned cultivation terminates, the mixture in container is carried out lyophilization,
Collect dried object, and with uviol lamp, it is carried out sterilizing, obtain composite modified tapioca；Finally count by weight, take
60 parts of distilled water, 25 parts of above-mentioned composite modified tapiocas, 9 parts of polyvinyl alcohol, 6 parts of castor oil hydrogenated, 0.9 part of polyethenoxy ether
And 0.9 part of polydimethylsiloxane, first distilled water and above-mentioned composite modified tapioca are put in heater, be heated to 85
DEG C, stir gelatinizing 2h with 110r/min, be separately added into the polyvinyl alcohol of above-mentioned parts by weight, castor oil hydrogenated, polyoxy third subsequently
Alkene ether and polydimethylsiloxane, continue stirring 6h, then stop agitating heating, stand 2h, wetting agent.
2:1 in mass ratio, mixes the wetting agent that deionized water is prepared with the present invention and is placed in solution tank, then by glass
Glass fiber by solution tank, then carries out frictioning process with the speed of 10m/s, the most again with the speed of 7m/s by dividing equipped with quality
Number is the rinse bath of 25% ethanol solution, the glass fibre after being processed, and the glass fibre after finally processing is placed in temperature
It is that the vacuum drying oven of 120 DEG C is dried 8min, the glass fibre after being infiltrated.After testing, its advancing contact angle is 72.15 °,
Surface tension reaches 54.32mN m-1。
Example 2
Count the most by weight, take 35 portions of tapiocas, 18 parts of mass fractions are 15% ammonia, 12 parts of boric acid and 0.2 part of 2-
Sodium naphthalene sulfonate, puts in the there-necked flask with agitator, thermometer and reflux, is placed in water-bath, uses nitrogen
Protection, design temperature is 85 DEG C, stirs 3h with 120r/min；After above-mentioned stirring terminates, naturally cool to room temperature, then by three mouthfuls
Flask is placed in cold room, and design temperature is 4 DEG C, freezing 30min, subsequently the mixture in there-necked flask is put into spray drying
Machine is dried, collects dried object, in mass ratio 1:3, dried object is mixed homogeneously with 1.6mol/L ethanol solution, is positioned over ultrasonic
Agitator filters after sonic oscillation 10min, filtering residue is air-dried and pulverizes, cross 200 mesh sieves, obtain modified tapioca starch；Again by weight
Amount number meter, takes 30 parts of above-mentioned modified tapioca starch, 11 parts of mass fractions are 10% glucose solution and 2 parts of carbamide, and stirring is all
Even, put in container, by inoculum concentration 10%, aspergillus oryzae is added to container, and container is moved in constant incubator, set
Temperature is 26 DEG C, with 120rpm shaken cultivation 9h；After above-mentioned cultivation terminates, the mixture in container is carried out lyophilization,
Collect dried object, and with uviol lamp, it is carried out sterilizing, obtain composite modified tapioca；Finally count by weight, take
50 parts of distilled water, 20 parts of above-mentioned composite modified tapiocas, 6 parts of polyvinyl alcohol, 4 parts of castor oil hydrogenated, 0.6 part of polyethenoxy ether
And 0.5 part of polydimethylsiloxane, first distilled water and above-mentioned composite modified tapioca are put in heater, be heated to 80
DEG C, stir gelatinizing 1h with 110r/min, be separately added into the polyvinyl alcohol of above-mentioned parts by weight, castor oil hydrogenated, polyoxy third subsequently
Alkene ether and polydimethylsiloxane, continue stirring 4h, then stop agitating heating, stand 1h, wetting agent.
2:1 in mass ratio, mixes the wetting agent that deionized water is prepared with the present invention and is placed in solution tank, then by glass
Glass fiber with 7, the speed of m/s is by solution tank, then carries out frictioning process, the most again with the speed of 6m/s by dividing equipped with quality
Number is the rinse bath of 25% ethanol solution, the glass fibre after being processed, and the glass fibre after finally processing is placed in temperature
It is that the vacuum drying oven of 117 DEG C is dried 7min, the glass fibre after being infiltrated.After testing, its advancing contact angle is 55.41 °,
Surface tension reaches 43.42mN m-1。
Example 3
Count the most by weight, take 37 portions of tapiocas, 19 parts of mass fractions are 15% ammonia, 13 parts of boric acid and 0.3 part of 2-
Sodium naphthalene sulfonate, puts in the there-necked flask with agitator, thermometer and reflux, is placed in water-bath, uses nitrogen
Protection, design temperature is 87 DEG C, stirs 4h with 120r/min；After above-mentioned stirring terminates, naturally cool to room temperature, then by three mouthfuls
Flask is placed in cold room, and design temperature is 5 DEG C, freezing 40min, subsequently the mixture in there-necked flask is put into spray drying
Machine is dried, collects dried object, in mass ratio 1:3, dried object is mixed homogeneously with 1.6mol/L ethanol solution, is positioned over ultrasonic
Agitator filters after sonic oscillation 12min, filtering residue is air-dried and pulverizes, cross 200 mesh sieves, obtain modified tapioca starch；Again by weight
Amount number meter, takes 35 parts of above-mentioned modified tapioca starch, 12 parts of mass fractions are 10% glucose solution and 3 parts of carbamide, and stirring is all
Even, put in container, by inoculum concentration 12%, aspergillus oryzae is added to container, and container is moved in constant incubator, set
Temperature is 27 DEG C, with 120rpm shaken cultivation 10h；After above-mentioned cultivation terminates, the mixture in container is carried out lyophilization,
Collect dried object, and with uviol lamp, it is carried out sterilizing, obtain composite modified tapioca；Finally count by weight, take
55 parts of distilled water, 22 parts of above-mentioned composite modified tapiocas, 7 parts of polyvinyl alcohol, 5 parts of castor oil hydrogenated, 0.8 part of polyethenoxy ether
And 0.7 part of polydimethylsiloxane, first distilled water and above-mentioned composite modified tapioca are put in heater, be heated to 82
DEG C, stir gelatinizing 2h with 110r/min, be separately added into the polyvinyl alcohol of above-mentioned parts by weight, castor oil hydrogenated, polyoxy third subsequently
Alkene ether and polydimethylsiloxane, continue stirring 5h, then stop agitating heating, stand 2h, wetting agent.
2:1 in mass ratio, mixes the wetting agent that deionized water is prepared with the present invention and is placed in solution tank, then by glass
Glass fiber by solution tank, then carries out frictioning process with the speed of 8m/s, the most again with the speed of 6m/s by dividing equipped with quality
Number is the rinse bath of 25% ethanol solution, the glass fibre after being processed, and the glass fibre after finally processing is placed in temperature
It is that the vacuum drying oven of 115 DEG C is dried 7min, the glass fibre after being infiltrated.After testing, its advancing contact angle is 60.52 °,
Surface tension reaches 47.56mN m-1。
Claims (1)
1. one kind utilizes the method that wetting agent prepared by composite modified tapioca, it is characterised in that concrete preparation process is:
(1) count by weight, take 35～40 portions of tapiocas, 18～20 parts of mass fractions are 15% ammonia, 12～14 parts of boron
Acid and 0.2～0.4 part of 2-sodium naphthalene sulfonate, put in the there-necked flask with agitator, thermometer and reflux, be placed in water
In bath, using nitrogen protection, design temperature is 85～90 DEG C, stirs 3～6h with 120r/min；
(2) after above-mentioned stirring terminates, naturally cool to room temperature, then there-necked flask be placed in cold room, design temperature be 4～
6 DEG C, freezing 30～50min, subsequently the mixture in there-necked flask is put in spray dryer and be dried, collect dried object, press
Mass ratio 1:3, mixs homogeneously dried object with 1.6mol/L ethanol solution, be positioned in ultrasonator sonic oscillation 10～
Filter after 15min, filtering residue is air-dried and pulverizes, cross 200 mesh sieves, obtain modified tapioca starch；
(3) count by weight, take 30～40 parts of above-mentioned modified tapioca starch, 11～13 parts of mass fractions are that 10% glucose is molten
Liquid and 2～3 parts of carbamide, stir, put in container, by inoculum concentration 10～15%, is added to container by aspergillus oryzae, and will
Container moves in constant incubator, and design temperature is 26～30 DEG C, with 120rpm shaken cultivation 9～12h；
(4) after above-mentioned cultivation terminates, the mixture in container is carried out lyophilization, collect dried object, and with uviol lamp pair
It carries out sterilizing, obtains composite modified tapioca；
(5) count by weight, take 50～60 parts of distilled water, 20～25 parts of above-mentioned composite modified tapiocas, 6～9 parts of poly-second
Enol, 4～6 parts of castor oil hydrogenated, 0.6～0.9 part of polyethenoxy ether and 0.5～0.9 part of polydimethylsiloxane, first will steam
Distilled water and above-mentioned composite modified tapioca are put in heater, are heated to 80～85 DEG C, with 110r/min stirring gelatinizing 1～
2h, is separately added into the polyvinyl alcohol of above-mentioned parts by weight, castor oil hydrogenated, polyethenoxy ether and polydimethylsiloxane subsequently,
Continue stirring 4～6h, then stop agitating heating, stand 1～2h, wetting agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610768936.8A CN106316158A (en) | 2016-08-31 | 2016-08-31 | Method for preparing impregnating compound from compound modified tapioca starch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610768936.8A CN106316158A (en) | 2016-08-31 | 2016-08-31 | Method for preparing impregnating compound from compound modified tapioca starch |
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| CN106316158A true CN106316158A (en) | 2017-01-11 |
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| CN201610768936.8A Pending CN106316158A (en) | 2016-08-31 | 2016-08-31 | Method for preparing impregnating compound from compound modified tapioca starch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863110A (en) * | 2018-07-26 | 2018-11-23 | 苏州华龙化工有限公司 | A kind of preparation method of glass fiber infiltration agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3887389A (en) * | 1973-01-26 | 1975-06-03 | Ppg Industries Inc | Fiber glass sizing for use in tire cord manufacturing |
| CN103936873A (en) * | 2014-05-07 | 2014-07-23 | 重庆市化工研究院 | Preparation method of modified high amylose starch for glass fiber wetting agent |
| CN105254190A (en) * | 2015-09-24 | 2016-01-20 | 南京春辉科技实业有限公司 | Impregnating compound used for multicomponent glass optical fiber, and preparation method thereof |
| CN105349598A (en) * | 2015-12-12 | 2016-02-24 | 陈燕榕 | Method for modifying starch through enzymatic degradation technology |
| CN105481989A (en) * | 2015-07-15 | 2016-04-13 | 河南恒瑞淀粉科技股份有限公司 | Glass fiber soakage agent added with modified starch |
-
2016
- 2016-08-31 CN CN201610768936.8A patent/CN106316158A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3887389A (en) * | 1973-01-26 | 1975-06-03 | Ppg Industries Inc | Fiber glass sizing for use in tire cord manufacturing |
| CN103936873A (en) * | 2014-05-07 | 2014-07-23 | 重庆市化工研究院 | Preparation method of modified high amylose starch for glass fiber wetting agent |
| CN105481989A (en) * | 2015-07-15 | 2016-04-13 | 河南恒瑞淀粉科技股份有限公司 | Glass fiber soakage agent added with modified starch |
| CN105254190A (en) * | 2015-09-24 | 2016-01-20 | 南京春辉科技实业有限公司 | Impregnating compound used for multicomponent glass optical fiber, and preparation method thereof |
| CN105349598A (en) * | 2015-12-12 | 2016-02-24 | 陈燕榕 | Method for modifying starch through enzymatic degradation technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863110A (en) * | 2018-07-26 | 2018-11-23 | 苏州华龙化工有限公司 | A kind of preparation method of glass fiber infiltration agent |
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Application publication date: 20170111 |