CN109763331A - A kind of no PVA green sizing material and its sizing technique - Google Patents

Abstract

A kind of no PVA green sizing material, environment-friendly size include acetic ester starch slurry and auxiliary agent, weight ratio 125-175:6-8, sizing technique are as follows: slurry prepares；It sizes mixing: acetate starch is poured into the cold water of slurry bucket, after high-speed stirred 10min, slurry bucket is heated, auxiliary agent is added, stirs evenly, the adjusting for carrying out temperature, viscosity, solid content, volume and pH value, constant volume are required according to different process；Starching: the slurries of preparation being transported in sizing machine stock tank and carry out starching, and sizing temperature is 95-98 DEG C.Formula of size of the present invention simplifies, and activity time of sizing mixing is short；In terms of size performance, slurry viscosity is low, and viscosity stability is high；In terms of grind slurries quality, the rate of sizing, enhancing rate subtract the rate of stretching and regain index and show well；In weaving efficiency and sizing at aspect, weaving efficiency is high, reduces sizing costs；It high efficiency can be weaved in low-humidity environment, it can be energy saving.

Description

A kind of no PVA green sizing material and its sizing technique

Technical field

The present invention relates to a kind of no PVA green sizing material and its sizing techniques, belong to textile technology field.

Background technique

Sizing is the indispensable important procedure before weaving, and the purpose of starching improves the weavability of warp thread.On Slurry is only an intermediate link in entire process of textile production, and the slurry on fabric is needed to remove after finishing the weaving, starching, Desizing needs to consume a large amount of water resource and energy；Secondly, desizing waste liquid, will cause serious environmental pollution.It is aobvious according to data Show, the COD load of sizing accounts for the 40% of entire textile industry COD load, in production slurry, using in slurry, desizing processes, no It can avoid polluting the environment, sizing has become one of biggish pollution sources of textile industry.

Polyvinyl alcohol (PVA) is a kind of chemical sizwe of function admirable, is had to synthetic fibers and natural fiber excellent Adhesion property, therefore be widely used as the main slurry of starching always, but its not easily biological-degradable, cause serious pollution to the environment, in Europe Continent Countries are listed in " unclean slurry ".

With the enhancing of global trade competition and people's environmental consciousness, on piece market, the portions such as European Union Point countries and regions have been distinctly claimed product without PVA, and also the raising because of blowdown expense and government control Some Domestic printing and dyeing enterprise The increasing for managing pollution measure one after another will be without PVA starching.Simultaneously reduce cost, upgrading synergy be enterprise's invariability target, slurry Material expense is one of the prime cost in textile enterprise's production process.

Summary of the invention

The present invention is directed to prior art problem, a kind of no PVA green sizing material and its sizing technique is provided, using acetic acid Ester starch size realizes that high regain starching, height are impregnated with starching, low rate of sizing starching and high-environmental starching without PVA starching, solution The environmentally friendly problem difficult to degrade of desizing of having determined, it is environment friendly and pollution-free.

Technical problem of the present invention is solved with following technical solution:

A kind of no PVA green sizing material, environment-friendly size include acetic ester starch slurry and auxiliary agent, acetic ester starch slurry Weight ratio with auxiliary agent is 125-175:6-8.

Above-mentioned no PVA green sizing material, the acetic ester starch slurry preparation process are as follows: cornstarch and reagent are in water In, by oxidizer catalytic, transesterification occurs acetylization reaction and generates starch acetate, obtains acetate starch.

Above-mentioned no PVA green sizing material, the reagent are vinylacetate.

The mass ratio of above-mentioned no PVA green sizing material, the cornstarch and water is 20-30:70-80, the acetic acid The dosage of vinyl acetate is the 10% of cornstarch dosage.

Above-mentioned no PVA green sizing material, the oxidant are NaClO, H₂O₂、Br₂Or KMnO₄。

Above-mentioned no PVA green sizing material, the auxiliary agent are commercially available auxiliary agent YB- I or YB- II, and main component is organic Silicon polymer.

A kind of sizing technique of no PVA green sizing material, includes the following steps:

A, slurry prepares: requiring the difference of solid content according to different cultivars, weighs acetic ester starch slurry and auxiliary agent is spare；

B, it sizes mixing: acetate starch is poured into the cold water of slurry bucket, after high-speed stirred 10min, slurry bucket opening is heated, when After slurry temperature reaches 98 DEG C in slurry bucket, change small vapour and simmer 30min, auxiliary agent is added, stirs evenly, according to different process require into The adjusting of trip temperature, viscosity, solid content, volume and pH value, constant volume；

C, starching: the step b slurries prepared being transported in sizing machine stock tank and carry out starching, and sizing temperature is 95-98 DEG C.

The sizing technique of above-mentioned no PVA green sizing material, in the step b, slurry viscosity 9-10s, solid content is 10-12%, pH value 7.5-8.5, the volume of water are 900-1350L.

The present invention prepares slurry using acetic ester starch slurry and auxiliary agent, has the advantages that the acetate starch of use With hydrophilic radical acetyl group, desizing is easier；It is adjuvant used, it for pure cotton or polyester-cotton blend blending product starching feature and It is required that introducing a variety of monomers and a variety of high molecular materials carry out processing and compound.The auxiliary agent can increase starch pair Sizing skin-friction coefficient is effectively reduced in the adhesion strength of warp thread, increases the number of resistance to buckling of sizing, and has the function of once to mould, protect Wet function weaves Pure cotton Product under low-humidity environment.

Formula of size of the present invention simplifies, and activity time of sizing mixing is short；In terms of size performance, slurry viscosity is low, is 9-10s, Viscosity stability is high；In terms of grind slurries quality, realize the low rate of sizing, high enhancing rate, it is low subtract the rate of stretching and high regain, and it is every Index shows well, and purified cotton yarns regain is 9-11%, rate of sizing 9-10%；Polyester-cotton blend regain is 4-7%, the rate of sizing For 11-12%；In terms of weaving efficiency and sizing costs, weaving efficiency is up to than traditional handicraft higher level, weaving efficiency 90.8%, sizing costs reduce 40.7%；It high efficiency can be weaved in low-humidity environment, can be energy saving, it is effectively reduced Air-conditioning expense；Adjuvant used is ep-type material with the biochemical processing of acetate starch, solves that desizing environmental protection is difficult to degrade to ask Topic.

Specific embodiment

It is required according to different cultivars, rate of sizing requirement is higher, then the solid content requirement of the slurry prepared is higher, usual conditions Under, it is desirable that the solid content >=rate of sizing, for example, when requiring the rate of sizing is 12%, solid content >=12%.

The invention will be further described with reference to embodiments.

Embodiment 1

Pure cotton sizing technique process: 106.5 " satin drill of J60*60 200*98

Slurry prepares: weighing acetic ester starch slurry 150kg, I 8kg of auxiliary agent YB- is spare；It sizes mixing: acetate starch is fallen Enter in the cold water of slurry bucket, after high-speed stirred 10min, slurry bucket is heated, after slurry temperature reaches 98 DEG C in slurry bucket, it is stewing to change small vapour 30min is boiled, auxiliary agent is added, stirs evenly, adjusting slurry pH value is 7.5, viscosity 9.8s, solid content 10.27%, and volume is 1160L；Starching: the slurries of preparation being transported in sizing machine stock tank and carry out starching, and sizing temperature is 96 DEG C.

The sizing effect for detecting pure cotton formula of size, obtaining regain is 9.2%, the rate of sizing 9.26%, enhancing rate 25.5%, subtract the rate of stretching 16.9%.

The performance of slurry of the present invention and yarn after tradition PVA slurry sizing is compared, formula of size comparison is shown in Table 1, Yarn property detection comparison is shown in Table 2.

The slurry of the present invention of table 1 and tradition PVA formula of size contrast table

	Acetate starch+auxiliary agent	PVA slurry
				Kg	Kg
PVA	-	62.5
			JD-011	-	25
130	-	62.5
			HY-206	-	10
Acetate starch	150	-
			Auxiliary agent	8	-
96Ⅱ(-85)	-	3
			Dry weight (KG)	136.8	144.6

The slurry sizing yarn of the present invention of table 2 and tradition PVA slurry sizing yarn property contrast table

As can be seen from Table 2, compared with traditional PVA slurry, yarn sizing performance significantly improves slurry of the present invention, enhancing rate 11.8% is improved, subtracting rate of stretching reduces by 15.5%, and the rate of sizing is reduced to 9.26% by 12.15%, 23.8% is reduced, the rate of sizing It reduces, reduces sizing costs, while efficiency is increased to 87.2% by 82.8%, weaving efficiency improves 5.3%.

Embodiment 2

Cotton washs sizing technique process: 67 " twill of C/T55/45 32*32 130*70

Slurry prepares: weighing acetic ester starch slurry 125kg, II 7kg of auxiliary agent YB- is spare；It sizes mixing: acetate starch is fallen Enter 1.5m³In the cold water of slurry bucket, after high-speed stirred 10min, slurry bucket is heated, after slurry temperature reaches 98 DEG C in slurry bucket, is changed Small vapour simmers 30min, and auxiliary agent is added, stirs evenly, and adjusting slurry pH value is 7.5, viscosity 9.0s, solid content 13.3%, body Product is 975L；Starching: the slurries of preparation being transported in sizing machine stock tank and carry out starching, and sizing temperature is 96 DEG C.

Detection cotton washs the sizing effect of formula of size, and obtaining regain is 4.3%, the rate of sizing 10.01%, enhancing rate 19.5%, subtract the rate of stretching 24.1%.

The performance of slurry of the present invention and yarn after tradition PVA slurry sizing is compared, formula of size comparison is shown in Table 3, Yarn property detection comparison is shown in Table 4.

The slurry of the present invention of table 3 and tradition PVA formula of size contrast table

	Acetate starch+auxiliary agent Kg	PVA starches Kg
			PVA	-	50
JD-011	-	25
			130	-	25
Yu Dian	-	25
			JSL-2	-	25
Polyester	-	8
			Acetate starch	125	-
Auxiliary agent	7	-
			96Ⅱ(-85)	-	3
EK	4	4
			Dry weight (KG)	114.1	142.3

The slurry sizing yarn of the present invention of table 4 and tradition PVA slurry sizing yarn property contrast table

As can be seen from Table 4, compared with traditional PVA slurry, yarn sizing performance significantly improves slurry of the present invention, enhancing rate 72.6% is improved, subtracting the rate of stretching reduces 49.0%, and efficiency has been increased to 90.8% by 86.5%.

Claims (8)

1. a kind of no PVA green sizing material, it is characterised in that: environment-friendly size includes acetic ester starch slurry and auxiliary agent, acetic acid The weight ratio of ester starch size and auxiliary agent is 125-175:6-8.

2. no PVA green sizing material according to claim 1, it is characterised in that: the acetic ester starch slurry preparation Process are as follows: in water, by oxidizer catalytic, transesterification occurs acetylization reaction and generates starch vinegar for cornstarch and reagent Acid esters obtains acetate starch.

3. no PVA green sizing material according to claim 2, it is characterised in that: the reagent is vinylacetate.

4. no PVA green sizing material according to claim 3, it is characterised in that: the quality of the cornstarch and water Than being the 10% of cornstarch dosage for the dosage of 20-30:70-80, the vinylacetate.

5. no PVA green sizing material according to claim 4, it is characterised in that: the oxidant is NaClO, H₂O₂、 Br₂Or KMnO₄。

6. no PVA green sizing material according to claim 5, it is characterised in that: the auxiliary agent is commercially available auxiliary agent YB- I Or YB- II, main component are organosilicon polymer.

7. a kind of sizing technique without PVA green sizing material as described in claim 1-6, it is characterised in that: including as follows Step:

A, slurry prepares: requiring the difference of solid content according to different cultivars, weighs acetic ester starch slurry and auxiliary agent is spare；

B, it sizes mixing: acetate starch is poured into the cold water of slurry bucket, after high-speed stirred 10min, slurry bucket opening is heated, slurry bucket is worked as After interior slurry temperature reaches 98 DEG C, change small vapour and simmer 30min, auxiliary agent is added, stirs evenly, is required to carry out temperature according to different process The adjusting of degree, viscosity, solid content, volume and pH value, constant volume；

C, starching: the step b slurries prepared being transported in sizing machine stock tank and carry out starching, and sizing temperature is 95-98 DEG C.

8. the sizing technique of no PVA green sizing material according to claim 7, it is characterised in that: in the step b, Slurry viscosity is 9-10s, solid content 10-12%, pH value 7.5-8.5, and the volume of water is 900-1350L.