CN105036567B - A kind of preparation method for converted starch in glass fiber treating compound - Google Patents
A kind of preparation method for converted starch in glass fiber treating compound Download PDFInfo
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- CN105036567B CN105036567B CN201510469440.6A CN201510469440A CN105036567B CN 105036567 B CN105036567 B CN 105036567B CN 201510469440 A CN201510469440 A CN 201510469440A CN 105036567 B CN105036567 B CN 105036567B
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Abstract
The invention discloses a kind of preparation methods of the converted starch for glass fiber treating compound.The preparation method puts into starch in reaction vessel, adds in water, adds in swelling inhibitor, stirring is lower to adjust pH to 10~12, base catalyst is added in, etherifying agent is added, is reacted 10~16 hours at a temperature of 40~45 DEG C, after completion of the reaction, pH to 4~5 is adjusted, is cooled to room temperature, is filtered, cationic starch is made through drying in solids；By cationic starch and amylose according to 1:1~1:2 mass ratioes are uniformly mixed to get the converted starch product for glass fiber treating compound；There is good filming using product produced by the present invention, film-strength is high, and elasticity is good; size can be evenly distributed on fiber, reduced size migration aptitude and reduced the tendency that size forms gel, play improvement film drying; the effect of fiber is protected, there is significant cost and process advantage.
Description
Technical field
The present invention relates to glass fiber yarn technical field more particularly to it is a kind of for converted starch in glass fiber treating compound and its
Preparation method.
Background technology
Glass fibre is a kind of reinforced inorganic material, with intensity is high, moisture absorption is low, corrosion-resistant, proportion is small, electrical insulating property
The excellent specific properties such as good, are widely used in building, traffic, electronics, aerospace, the fields such as derived energy chemical and national defence.Size
Using the intensity that can increase glass fibre, boundling monofilament lubricates and fiber surface is protected not to be damaged.Starch type size has
There is the advantages of advantages of nontoxic raw materials evil, post processing are simple, cleaning is easy, decomposition temperature is low, cloth cover after processing is pure white clean and tidy.
Cationic starch can be divided into etherificate type, esterification type and grafting according to chemical bond types between starch and cation group
Copoly type, wherein etherificate type cationic starch be hydroxyl in starch molecule with cationic etherifying agent by etherification reaction combined and
Into the chemical bond of etherificate type cationic starch is stablized, and simple compared with graft copolymerization cationic starch synthesis technology, so to current
Until it is of greatest concern.
But converted starch is all to use high-amylose maize starch as raw material in current size, cost of material is high, Er Qiexian
There is technology to use to further improve using oxidation etherificate or crosslinking etherificate complex denaturation, complex process, production cost.Denaturation is formed sediment
Powder is one of main component of glass fiber treating compound, has dominated the cost of glass fiber treating compound, therefore, find performance as film forming agent
Well, cheap converted starch film forming agent is always the direction that glass-fiber industry is made great efforts.
Invention content
The shortcomings that in order to overcome the prior art, forms sediment the purpose of the present invention is to provide one kind for being denaturalized in glass fiber treating compound
The preparation method of powder, in glass fiber treating compound, the converted starch film-strength is high, and elasticity is good, size is made to be evenly distributed, and can subtract
Few size migration aptitude and formation gel tendency, improve film drying, reduce fiber breakage.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of converted starch for glass fiber treating compound, includes the following steps：
(1) starch is tuned into starch milk with water, swelling inhibitor is added in into the starch milk；
(2) pH value of starch milk obtained by NaOH solution regulating step (1) is 10~12, and addition is equivalent to starch quality
5%~10% base catalyst adds the etherifying agent for being equivalent to starch quality 5%~10%, is stirred at a temperature of 40~45 DEG C
Reaction is mixed, hydrochloric acid is then added and adjusts pH value of starch milk to 4~5, reaction was completed, the starch milk after being reacted；
(3) starch milk after step (2) described reaction with ethyl alcohol is washed, then be washed with distilled water, then will washed
It washs gains dry, pulverize, is sieved, obtains cationic starch；
(4) by cationic starch obtained by step (3) and amylose according to 1:1~1:2 mass ratioes are uniformly mixed, and are obtained described
For the converted starch of glass fiber treating compound；
The swelling inhibitor is sodium sulphate or/and sodium chloride；
The base catalyst is sodium hydroxide or/and calcium hydroxide；
The etherifying agent is the chloro- 2- hydroxypropyltrimoniums chlorides (hereinafter referred to as CHPTMA) of 3- or N- (2,3- epoxies
Propyl) trimethyl ammonium chloride (hereinafter referred to as GTA).
Further to realize the object of the invention, it is preferable that the addition of the swelling inhibitor for starch quality 5%~
10%.
Preferably, the time being stirred to react is 10~16 hours.
Preferably, step (1) described starch for maize amylose, cornstarch, waxy corn starch, rice starch,
It is one or more in Waxy Rice Starch, potato starch, tapioca, sweet potato starch, green starch and pea starch.
Preferably, the mass fraction of step (1) described starch milk is 35%~45%.
Preferably, the amylose is the maize amylose of amylose content range 50%~70%.
Preferably, a concentration of 0.1~1mol/L of the NaOH solution；The concentration of hydrochloric acid is 0.1~1mol/L.
Preferably, the mass fraction 95% of the ethyl alcohol；Step (3) number washed with ethyl alcohol is 4~5
It is secondary；The number of step (3) the distillation water washing is 2~3 times；The drying is dried in 45~55 DEG C of air dry ovens；
The sieve pore of the sieving is 100 mesh
Preferably, the preparation method of the chloro- 2- hydroxypropyltrimoniums chlorides of the etherifying agent 3- is：By equimolar epoxy chlorine
Propane is reacted with trimethylamine or trimethylamine hydrochloride aqueous solution in 25~60 DEG C to be made；
The preparation method of etherifying agent N- (2,3- glycidyl) trimethyl ammonium chloride is：By equimolar epoxychloropropane
Or chlorallylene is reacted in 25~60 DEG C with trimethylamine and is made.
A kind of converted starch for glass fiber treating compound is made by above-mentioned preparation method.
Above-mentioned cooling, drying, crushing etc. are all the general technologies in current food processing field.
The converted starch is free from extraneous odour, the white powder of no-sundries, exquisiteness.
GTA and CHPTMA can be converted rapidly mutually under the conditions of different pH.
Application of the existing starch investigative technique personnel for starch raw material, if necessary to starch conversion, develop
A variety of method of modifying have various applications in practice.But this application is all directly to apply modified starch, and will not change
Property starch and modified starch be used in mixed way and not yet find, possible existing technical staff think it is such be used in mixed way will generate it is mutual
It influences.And it was found by the inventors of the present invention that converted starch product and ative starch are used in mixed way, since high amylose starches naturally has
There are excellent film forming, flexibility, tensile strength and water-insoluble；Etherificate type cationic starch has good film forming, glues
Spend stability, to the affinity of fiber the advantages that, the mixture of cationic starch and amylose is used to form converted starch and is produced
Product, as starch type glass fiber treating compound main component, the advantages of both can having both, this converted starch film-strength is high, elasticity
Good, size is evenly distributed, and can reduce size migration aptitude and form gel tendency, improves film drying, reduces fiber
It fractures, is highly suitable in glass fiber treating compound, and since cation modified starch raw material is common starch, cost is relatively
It is low, it effectively overcomes the deficiency of the converted starch obtained using composite modified (crosslinking etherificate or oxidation etherificate) method and is produced into
The problem of this is high.
The present invention is had the following advantages relative to the prior art and effect：
1) mixed-cation modified starch of the present invention overcomes the deficiency of ative starch and single converted starch with amylose,
For in glass fiber treating compound, this converted starch film-strength to be high, elasticity is good, size is made to be evenly distributed, and can reduce size
Migration aptitude and formation gel tendency, improve film drying, reduce fiber breakage.
2) method that the present invention is mixed with converted starch using cationic modified starch with amylose, prepares a kind of use
Converted starch in glass fiber treating compound.Wherein, the key of cationic starch practicability is for the parent with negative charge substance
And property, the other compositions in size are easily combined closely therewith, and size is made to be evenly distributed；The ash content of cationic starch is compared with it
His converted starch is low, and the wearability of film is more preferable, and the performance for protecting glass is stronger, flies that silk is less or nothing；
3) amylose has excellent film forming and gelling characteristics, and the presence of gel characteristic can prevent size
Migration, but amylose water solubility is poor, and solution viscosity is higher, can reduce the processing performance of size, and glass fibre yarn is caused to rise
Hair；
Specific embodiment
To more fully understand the present invention, with reference to embodiment, the invention will be further described, but the reality of the present invention
It is without being limited thereto to apply mode.
Embodiment 1
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) cornstarch is tuned into the starch milk that mass concentration is 35% with distilled water, phase is added in into the starch milk
When in the sodium sulphate of starch quality 5%；
(2) pH of starch milk obtained by the NaOH solution regulating step (1) of 1mol/L is 10.0, and addition is equivalent to starchiness
The base catalyst NaOH of amount 5%, adds the etherifying agent CHPTMA for being equivalent to starch quality 8%, is stirred at a temperature of 40 DEG C anti-
It answers 10 hours, the HCl solution for then adding 1mol/L adjusts starch milk pH to 4.0, and reaction was completed, the starch after being reacted
Breast；
(3) starch milk after step (2) described reaction with ethyl alcohol wash 4 times, then be washed with distilled water 2 times, so
Washing gains in 45 DEG C of air dry ovens are dried afterwards, are crushed, 100 mesh standard sieves is crossed, obtains cationic starch；
(4) by cationic starch obtained by step (3), (amylose is the jade that amylose content is 50% with amylose
Rice amylose) according to 1:1 mass ratio is uniformly mixed, as the converted starch for glass fiber treating compound.
(5) size is prepared and used by prior art manner：By converted starch product and deionization made from embodiment 1
Water mixes, and is configured to the solution that mass percentage is 5%, solution is heated to 90 DEG C, constant temperature 30min is gelatinized, temperature-rise period
It should not be too fast (heating rate is controlled in 1.5~3.0 DEG C/min).After the completion of gelatinization, add appropriate warm water and adjust the temperature to 75
DEG C (become gelatinized corn starch) is for use.
It is required according to prior art formula, weighs auxiliary agent NBL-e-201, Sofbon GF-1, L-44, Newlon GF-
101st, NewlonGF-100 is heated to 80 DEG C, auxiliary agent GW-18 is individually dissolved into 80 DEG C or more aqueous solutions in emulsification container.
Using 5000r/min high-speed shearing machines (being the general agitating device of the prior art) under high velocity agitation, in emulsification container gradually
Add in GW-18 aqueous solutions.In phase inversion point, material is become viscous in paste, continues to add 80 DEG C or more hot water, is transformed into steady
Fixed oil-in-water emulsion.About 4 minutes high shear agitation time.The oil-in-water emulsion emulsified is added in 75 DEG C of gelatinized corn starch
In.The auxiliary agent NBL-70 of recipe requirements is weighed, is dissolved in 80 DEG C of hot water, is added in gelatinized corn starch.It is quantified with 70 DEG C or so hot water
To the size total amount of required preparation.By size obtained for glass fiber wire-drawing process, and performance is surveyed, the results are shown in Table
3 and table 4.
Embodiment 2
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) pea starch is tuned into the starch milk that mass concentration is 40% with distilled water, phase is added in into the starch milk
When in the sodium sulphate of starch quality 5%；
(2) pH of starch milk obtained by the NaOH solution regulating step (1) of 1mol/L is 12.0, and addition is equivalent to starchiness
The base catalyst NaOH of amount 5%, adds the etherifying agent CHPTMA for being equivalent to starch quality 10%, is stirred at a temperature of 45 DEG C anti-
It answers 16 hours, the HCl solution for then adding 1mol/L adjusts starch milk pH to 5.0, and reaction was completed, the starch after being reacted
Breast；
(3) starch milk after step (2) described reaction with ethyl alcohol wash 4 times, then be washed with distilled water 2 times, so
Washing gains in 45 DEG C of air dry ovens are dried afterwards, are crushed, 100 mesh standard sieves is crossed, obtains cationic starch；
(4) by cationic starch obtained by step (3), (amylose is the jade that amylose content is 60% with amylose
Rice amylose) according to 1:1.5 mass ratio is uniformly mixed, as the converted starch for glass fiber treating compound.
(5) size is prepared and used by prior art manner：By converted starch product and deionization made from embodiment 2
Water mixes, and is configured to the solution that mass percentage is 5%, solution is heated to 90 DEG C, constant temperature 30min is gelatinized, temperature-rise period
It should not too soon (referring to embodiment 1).After the completion of gelatinization, add appropriate warm water and adjust the temperature to 75 DEG C or so (becoming gelatinized corn starch)
For use.
It is required according to prior art formula, weighs auxiliary agent NBL-e-201, Sofbon GF-1, L-44, Newlon GF-
101st, NewlonGF-100 is heated to 80 DEG C, auxiliary agent GW-18 is individually dissolved into 80 DEG C or more aqueous solutions in emulsification container.
Using 5000r/min high-speed shearing machines (being a kind of agitating device of the prior art), in container is emulsified, under high-speed stirred by
Gradually add in GW-18 aqueous solutions.In phase inversion point, material is become viscous in paste, is continued to add 80 DEG C or more hot water, be transformed into
Stable oil-in-water emulsion.About 4 minutes high shear agitation time.The oil-in-water emulsion emulsified is added to 75 DEG C of starch
In paste.The auxiliary agent NBL-70 of recipe requirements is weighed, is dissolved in 80 DEG C of hot water, is added in gelatinized corn starch.It is quantitative extremely with 70 DEG C of hot water
The size total amount of required preparation.Size obtained applied to conventional glass fiber wire-drawing technique one is twisted thread and produces work
Skill measures the performance of obtained organdy, the results are shown in Table 3 and table 4.
The additive amount range of auxiliary agent is with reference to table 1 when preparing size：
The additive amount of auxiliary agent when table 1 prepares 100kg sizes
The specific additive amount of auxiliary agent is with reference to table 2 in Examples 1 and 2：
The additive amount of auxiliary agent when 100kg sizes are prepared in 2 example 1 of table and example 2
The performance test methods of converted starch product：
(1) viscosity：According to GB/T 22427.7-2008, viscosity survey is carried out using Brookfield DV-2 rotary viscometers
Examination.
(2) surface tension：According to GB/T 22237-2008, surface tension test is carried out to converted starch product.
(3) contact angle：According to GB/T 30447-2013, contact angle test is carried out using contact angle instrument.
(4) adhesive tension：Adhesive tension test is carried out using pull method.
Wire-drawing performance test method：
(1) precursor convergence：Convergence refers in drawing process after the coated size of glass fiber single filament, mutually bonds
Bonding degree during into glass fiber precursor.Its evaluation method is：100 chopped strands are taken at random, then with amplification sem observation
Fracture monofilament degree, divides three-level.1 point：Not bifurcated；2 points：1-2 fork (containing 2 forks)；3 points：3 forks are above (containing 3 forks).
Yarn sample is averaged convergence P=(a × 1+b × 2+c × 3)/100.Wherein a, b, c are respectively the quantity of each grade chopped strand；P is
Yarn sample is averaged convergence, and for value closer to 1, convergence is better.
(2) precursor stiffness：The degree that woven glass roving fabric or precursor are endured with all one's will.It is hung at center with specific length
When, under hitch point certain distance measurement hang down both ends spacing represent.It is performed by the regulation of ISO3375-L975.
(3) hair that breaks flies silk：Pass through the visual inspection to glass fiber single filament, if having disconnected hair and winged silk situation.
(4) tensile strength：It is tested using tensile strength test machine.
(5) size content：It is performed by the regulation of GB11175.
The converted starch product of Examples 1 and 2 is compared with existing industrial application starch product, size the performance test results
It is shown in Table 3.
Converted starch product is compared with the performance parameter of existing industrial application starch product made from 3 Examples 1 and 2 of table
The wire-drawing performance of size made from 4 Examples 1 and 2 of table and the existing made size of industrial application starch product
Performance parameter comparison result is shown in Table 4.
Table 4
By table 3 and table 4 it is found that Examples 1 and 2 reach existing industrial starch product performance indicator, meet glass leaching
Moisten agent performance requirement.But Example 1 and Example 2 of the present invention mixes two kinds of starch, overcomes ative starch and single denaturation is formed sediment
The deficiency of powder, in glass fiber treating compound, this converted starch film-strength to be high, elasticity is good, size is made to be evenly distributed, and can subtract
Few size migration aptitude and formation gel tendency, improve film drying, reduce fiber breakage.And the prior art is generally using multiple
Modified (crosslinking etherificate or oxidation etherificate) method is closed, the present invention uses single modification and physical mixed, and technique is relatively easy, easily
Control；Converted starch is one of main component of glass fiber treating compound, has dominated the cost of glass fiber treating compound as film forming agent, because
This, it is always the direction that glass-fiber industry is made great efforts to find functional, cheap converted starch film forming agent.The prior art is general
Amylomaize is used as raw material, subject cationic converted starch raw material be common starch, advantage of lower cost；This hair
The performance of bright converted starch meets or exceeds the prior art, while simple production process, and cost is relatively low, have significant cost and
Process advantage.
Embodiment 3
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) rice starch is tuned into the starch milk that mass content is 45% with distilled water, phase is added in into the starch milk
When in the sodium sulphate of starch quality 5%；
(2) pH of starch milk obtained by the NaOH solution regulating step (1) of 1mol/L is 12.0, and addition is equivalent to starchiness
The base catalyst NaOH of amount 10%, adds the etherifying agent GTA for being equivalent to starch quality 10%, is stirred to react at a temperature of 45 DEG C
12 hours, the HCl solution for then adding 1mol/L adjusted starch milk pH to 5.0, and reaction was completed, the starch after being reacted
Breast；
(3) starch milk after step (2) described reaction with ethyl alcohol wash 4 times, then be washed with distilled water 2 times, so
Washing gains in 45 DEG C of air dry ovens are dried afterwards, are crushed, 100 mesh standard sieves is crossed, obtains cationic starch；(4) will
(amylose is that the corn straight chain that amylose content is 70% or so forms sediment to cationic starch obtained by step (3) with amylose
Powder) according to 1:1.2 ratio is uniformly mixed, as the converted starch for glass fiber treating compound.
Embodiment 4
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) potato starch is tuned into the starch milk that mass concentration is 40% with distilled water, is added in into the starch milk
It is equivalent to the sodium sulphate of starch quality 5%；
(2) pH of starch milk obtained by the NaOH solution regulating step (1) of 1mol/L is 11.0, and addition is equivalent to starchiness
The base catalyst NaOH of amount 6%, adds the etherifying agent GTA for being equivalent to starch quality 5%, 12 is stirred to react at a temperature of 45 DEG C
Hour, the HCl solution for then adding 1mol/L adjusts starch milk pH to 5.0, and reaction was completed, the starch milk after being reacted；
(3) starch milk after step (2) described reaction with ethyl alcohol wash 4 times, then be washed with distilled water 2 times, so
Washing gains in 45 DEG C of air dry ovens are dried afterwards, are crushed, 100 mesh standard sieves is crossed, obtains cationic starch；(4) will
(amylose is that the corn straight chain that amylose content is 50% or so forms sediment to cationic starch obtained by step (3) with amylose
Powder) according to 1:1 ratio is uniformly mixed, as the converted starch for glass fiber treating compound.
Embodiment 5
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) tapioca is tuned into the starch milk that mass concentration is 38% with distilled water, phase is added in into the starch milk
When in the sodium sulphate of starch quality 5%；
(2) pH of starch milk obtained by the NaOH solution regulating step (1) of 1mol/L is 10.0, and addition is equivalent to starchiness
The base catalyst NaOH of amount 5%, adds the etherifying agent GTA for being equivalent to starch quality 10%, is stirred to react at a temperature of 45 DEG C
16 hours, the HCl solution for then adding 1mol/L adjusted starch milk pH to 5.0, and reaction was completed, the starch after being reacted
Breast；
(3) starch milk after step (2) described reaction with ethyl alcohol wash 4 times, then be washed with distilled water 2 times, so
Washing gains in 45 DEG C of air dry ovens are dried afterwards, are crushed, 100 mesh standard sieves is crossed, obtains cationic starch；
(4) by cationic starch obtained by step (3), (amylose is the jade that amylose content is 60% with amylose
Rice amylose) according to 1:1.5 ratio is uniformly mixed, as the converted starch for glass fiber treating compound.
Embodiment 6~10
One kind is obtained by mixing, preparation side for converted starch in glass fiber treating compound by cationic starch and amylose
Method is as follows：
(1) starch is tuned into mass concentration as 35%~45% starch milk with water, adds in and be equivalent into the starch milk
The swelling inhibitor of starch quality 5%~10%；
(2) pH of starch milk obtained by NaOH solution regulating step (1) is 10~12, and addition is equivalent to starch quality 5%
~10% base catalyst adds the etherifying agent for being equivalent to starch quality 5%~10%, is stirred at a temperature of 40~45 DEG C anti-
It answers 10~16 hours, then adds hydrochloric acid and adjust starch milk pH to 4~5, reaction was completed, the starch milk after being reacted；
(3) starch milk after step (2) described reaction with ethyl alcohol is washed, then be washed with distilled water, then will washed
It washs gains to dry in 45~55 DEG C of air dry ovens, crush, cross 100 mesh standard sieves, obtain cationic starch；
(4) by cationic starch obtained by step (3), (amylose is the jade that amylose content is 70% with amylose
Rice amylose) according to a certain percentage (being shown in Table 4) be uniformly mixed, the as converted starch for glass fiber treating compound；
The specific dosage of each component (%) is shown in Table 4 in each embodiment：
Each component and its dosage (%) in 4 embodiment 6~12 of table
In above-mentioned above-described embodiment：The NBL-e-201, Sofbon GF-1, L-44, Newlon GF-101, Newlon
GF-100, GW-18, NBL-70 are the existing commercial product of Japanese NBL Chemical Co., Ltd. production and sales.
The size of embodiment 3-10 is similar to the performance of embodiment 1,2, reaches glass performance requirements.
Converted starch product made from the content of present invention and above-described embodiment should in glass fiber wire drawing technique as size
Converted starch product obtained with water and (a variety of) organic additive (existing commercial product) can be mixed, is made into lotion by the used time
Form size, be coated to fiberglass surfacing, dosage of the converted starch product produced by the present invention in size can
Think the 3~8% of size total formula weight.
The raw material in the content of present invention and above-described embodiment is existing marketable material, and the ratio of raw material components is
Mass ratio；In used percentage, especially not dated, it is percent mass ratio.
In above-described embodiment：Technological parameter (temperature, time, concentration etc.) and each component numerical quantity in each step etc. are
Range, any point is applicable.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (9)
1. a kind of preparation method of converted starch for glass fiber treating compound, it is characterized in that including the following steps：
(1) starch is tuned into the starch milk that mass fraction is 35%~45% with water, expansion is added in into the starch milk and is inhibited
Agent；
(2) be 10~12 with the pH value of starch milk obtained by NaOH solution regulating step (1), addition be equivalent to starch quality 5%~
10% base catalyst adds the etherifying agent for being equivalent to starch quality 5%~10%, is stirred at a temperature of 40~45 DEG C anti-
Should, it then adds hydrochloric acid and adjusts pH value of starch milk to 4~5, reaction was completed, the starch milk after being reacted；
(3) starch milk after step (2) described reaction with ethyl alcohol is washed, then be washed with distilled water, then will washs institute
It obtains object dry, pulverize, is sieved, obtains cationic starch；
(4) by cationic starch obtained by step (3) and amylose according to 1:1~1:2 mass ratioes are uniformly mixed, and obtain described be used for
The converted starch of glass fiber treating compound；
The swelling inhibitor is sodium sulphate and/or sodium chloride；
The base catalyst is sodium hydroxide and/or calcium hydroxide；
The etherifying agent is the chloro- 2- hydroxypropyltrimoniums chlorides of 3- or N- (2,3- glycidyl) trimethyl ammonium chloride.
2. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that described swollen
The addition of swollen inhibitor is starch quality 5%~10%.
3. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that described to stir
The time for mixing reaction is 10~16 hours.
4. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that step
(1) starch is maize amylose, rice starch, potato starch, tapioca, sweet potato starch, green starch and pea
It is one or more in beans starch.
5. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that described straight
Chain starch is the maize amylose of amylose content range 50%~70%.
6. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that described
A concentration of 0.1~1mol/L of NaOH solution；The concentration of hydrochloric acid is 0.1~1mol/L.
7. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that the second
The mass fraction 95% of alcohol；Step (3) number washed with ethyl alcohol is 4~5 times；Step (3) the distillation washing
The number washed is 2~3 times；The drying is dried in 45~55 DEG C of air dry ovens；The sieve pore of the sieving is 100 mesh.
8. the preparation method of the converted starch according to claim 1 for glass fiber treating compound, which is characterized in that the ether
The preparation method of the chloro- 2- hydroxypropyltrimoniums chlorides of agent 3- is：By equimolar epoxychloropropane and trimethylamine or trimethylamine
Hydrochloric acid saline solution is made in 25~60 DEG C of reactions；
The preparation method of etherifying agent N- (2,3- glycidyl) trimethyl ammonium chloride is：By equimolar epoxychloropropane or 3-
Chloropropene is reacted with trimethylamine in 25~60 DEG C to be made.
9. a kind of converted starch for glass fiber treating compound, which is characterized in that it is by claim 1~8 any one of them system
Preparation Method is made.
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| US20050084675A1 (en) * | 2003-10-17 | 2005-04-21 | Boy-Chy Wang | Sizing composition for glass fibers |
| CN101033260A (en) * | 2006-03-10 | 2007-09-12 | 四平帝达变性淀粉有限公司 | Method of preparing quaternary ammonium type cationic starch |
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