CN102049153A - Preparation method for defoamer special for spinning - Google Patents

Abstract

The invention discloses a preparation method for a defoamer special for spinning. The proportions of active components for foaming inhibition, such as A silicon paste materials, simethicone, white carbon black and tributyl phosphate, are adjusted according to different proportions of modified starch, modified PVA (polyvinyl acetate), other composite slurries and surface active agents in composite slurry for spinning, and the mixture is dispersed into a saturated hydrocarbon solvent, such as animal and plant oils, through a certain preparation technique. The mixture is added at the early stage of proportioning composite slurry in the market, and stewed under a temperature above 80 DEG C. When the slurry is used, a long-term defoaming capacity with strong pertinence is exerted; moreover, the dosage and the use cost of the defoamer in the slurry are reduced so as to realize specificity of different composite slurries.

Description

A kind of preparation method of the dedicated defoamer of weaving

Technical field

That the present invention relates to is a kind of preparation method of the dedicated defoamer in weaving, and what be specifically related to is to add the early stage that is applied to combined slurry, and performance presses down the bubble ability by force targetedly for a long time in mashing off, usefulness slurry process.

Background technology

In the textile sizing process, generation how to eliminate foam is with after the applying of slurry technical staff problem, especially the steam warp sizing machine etc. be concerned about very much, and makes textile mills propose the higher bubble requirement that presses down to spinning paste adjuvant.

But part textile industry technical staff author specific aim disappears steeps mechanism and carried out the analysis and research of theoretical property, and has summed up the foaming reason of spinning sizing agent.As above the big vast midautumn of sponge textile industry employer's organization, go deep into the understanding of production scene for a long time according to oneself, summed up size mixing and the stock tank process in easily produce several situations of foam: the PVA-1788 of partial alcoholysis; The water quality that contains inorganic salts; Protein in the starch; Surfactant in the prescription; The stock tank solvent is little; Situations such as piece, quick heating feed intake.People such as Han Shihong have discussed defoamers such as tributyl phosphate, organosilicon respectively disappearing of starch and PVA1788 have been pressed down the bubble effect, reach a conclusion: the defoaming function of tributyl phosphate is stronger to different slurry adaptability, and will get well at the foam effect that protein forms, and the SOLID ORGANIC silicon defoaming agent is best to the effect of PVA1788.

With regard to present slurry enterprise present situation, all in various serial slurry products productions, added pointed defoamer, as having added solid or emulsion-type organosilicon series defoamer in the converted starch series products, added mineral oil series defoamer in the sex change PVA series products.A lot of defoamers prepare manufacturer and also just made corresponding defoamer at the inhomogeneity product, but these all do not obtain sufficient optimum organization and use, and have following problem: (1) is not brought into play and is respectively disappeared but foam ties up to the synergy in the slurry applied in any combination; (2) the used triphenyl phosphate antifoaming system of starch based has produced the bubble effect that helps to the PVA system; (3) a large amount of uses of defoamer cause slurry that the adhesion strength of yarn is reduced; (4) might cause and influence each other so that failure phenomenon, finally at mashing off, must add defoamer or the like when starching, these problems have all caused the unnecessary waste to defoamer, even have reduced the sizing performance of slurry own.

Application froth breaking auxiliary agents such as petroleum industry, printing and dyeing industry all are at on-site actual situations at present, adjust Compositional type defoamer targetedly.And all be that foaming at different slurry types has proposed corresponding defoamer in the textile sizing, and in not at mashing off, with the slurry process, the foam that is produced to a time-out at converted starch, sex change PVA, other synthetic slurries and the combinations-of surfactants of different proportion, and sizing type and technology operation etc. propose more rational defoamers.

Summary of the invention

The objective of the invention is at converted starch, sex change PVA, other synthetic slurries and surfactant various combination and actual conditions such as sizing type and technology operation, and the preparation method of a kind of special-purpose Compositional type defoamer of weaving that proposes.

This special-purpose Compositional type defoamer of weaving is realized by following steps, and is specific as follows:

Step 1: in the stirred tank of nitrogen protection, add 5 to 20 parts of dimethicones, 0.5 to 2 part of white carbon and a certain amount of coupling agent, handled 1 to 3 hour for 180 to 220 ℃, cooling is cooled to below 130 ℃, and adding 60 to 95 parts of kinematic viscosity is 500mm ²/ s dimethicone, 1 to 8 part of white carbon, normal temperature physical mixed 0.5 hour adds micro-HMDS and aliphatic acid again, be warming up to 110 to 130 ℃ after 20 minutes, stirring at low speed is incubated 2 to 5 hours, but cool off to such an extent that effectively disappear and soak branch A silicon cream material, standby.

Step 2: but in stirred tank, add effectively disappear soak branch A silicon cream material, polyether silicone oil, tributyl phosphate, aluminum stearate as stearate, Tween60 and AEO-3 and Span60 as emulsion adjuvant, stearic acid as synergist, sorbic acid as anticorrisive agent, be warming up to 80 to 130 ℃ of high temperature melt, high-speed stirred 0.5 hour, in 2 hours, slowly add 65 to 90 parts of alkyl mineral oil, cross colloid mill twice at last, discharging makes the textile sizing dedicated defoamer.

Further technical scheme is:

But the described weight part ratio that soaks branch A silicon cream material, polyether silicone oil, tributyl phosphate, aluminum stearate, Tween60, AEO-3, Span60, stearic acid, sorbic acid that effectively disappears is:

Compared with prior art, the invention has the beneficial effects as follows: this compound defoamer, can be at converted starch, sex change PVA, other synthetic slurries and surfactant various combination and sizing type and technology operation actual conditions, adjust A silicon cream material, dimethicone, white carbon, tributyl phosphate disappears and presses down the ratio of bubble active ingredient, the slurry of joining that is applied to combined slurry adds early stage, at mashing off more than 80 ℃, press down the bubble ability by force targetedly for a long time with performance in the slurry process, and the use amount and the use cost of defoamer in the reduction slurry, to realize the specificity of its various combination slurry.

The specific embodiment

Embodiment

This special-purpose Compositional type defoamer of weaving is realized by following steps, and is specific as follows:

Step 1: in the stirred tank of nitrogen protection, add 5 parts of dimethicones, 0.5 part of white carbon and a certain amount of coupling agent, handled 1 to 3 hour for 180 to 220 ℃, cooling is cooled to below 130 ℃, and adding 92 parts of kinematic viscosity is 500mm ²/ s dimethicone, 3 parts of white carbons, normal temperature physical mixed 0.5 hour adds micro-HMDS and aliphatic acid again, be warming up to 110 to 130 ℃ after 20 minutes, stirring at low speed is incubated 2 to 5 hours, but cool off to such an extent that effectively disappear and soak branch A silicon cream material, standby.

Step 2: in stirred tank, add 20 parts of A silicon cream materials, 3 parts of polyether silicone oils, 5 parts of tributyl phosphates, 3 parts of aluminum stearates, 3 parts of Tween60,2 parts of AEO-3,5 parts of Span60,0.5 part of stearic acid, 0.2 part of sorbic acid etc., be warming up to 80 to 130 ℃ of high temperature melt, high-speed stirred 0.5 hour, in 2 hours, slowly add 70 parts of alkyl mineral oil, cross colloid mill twice at last, discharging makes the textile sizing dedicated defoamer.

Claims (2)

1. the preparation method of the dedicated defoamer of weaving is characterized in that comprising the steps:

Step 1: in the stirred tank of nitrogen protection, add 5 to 20 parts of dimethicones, 0.5 to 2 part of white carbon and a certain amount of coupling agent, handled 1 to 3 hour for 180 to 220 ℃, cooling is cooled to below 130 ℃, and adding 60 to 95 parts of kinematic viscosity is 500mm ²/ s dimethicone, 1 to 8 part of white carbon, normal temperature physical mixed 0.5 hour adds micro-HMDS and aliphatic acid again, be warming up to 110 to 130 ℃ after 20 minutes, stirring at low speed is incubated 2 to 5 hours, but cool off to such an extent that effectively disappear and soak branch A silicon cream material, standby.

Step 2: but in stirred tank, add effectively disappear soak branch A silicon cream material, polyether silicone oil, tributyl phosphate, aluminum stearate as stearate, Tween60 and AEO-3 and Span60 as emulsion adjuvant, stearic acid as synergist, sorbic acid as anticorrisive agent, be warming up to 80 to 130 ℃ of high temperature melt, high-speed stirred 0.5 hour, in 2 hours, slowly add 65 to 90 parts of alkyl mineral oil, cross colloid mill twice at last, discharging makes the textile sizing dedicated defoamer.

2. the preparation method of weaving dedicated defoamer as claimed in claim 1 is characterized in that: but the described weight part ratio that soaks branch A silicon cream material, polyether silicone oil, tributyl phosphate, aluminum stearate, Tween60, AEO-3, Span60, stearic acid, sorbic acid that effectively disappears is: