Organic montmorillonite/acrylic acid size and preparation method thereof

An organic montmorillonite, acrylic technology, applied in textiles, papermaking, fiber processing and other directions, can solve the problems of equipment damage, the size is not greatly improved, etc., to improve adhesion, low cost, improve yarn strength Effect

Inactive Publication Date: 2009-12-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not have a great improvement effect on the slurry, but will cause certain harm to the equipment

Method used

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  • Organic montmorillonite/acrylic acid size and preparation method thereof
  • Organic montmorillonite/acrylic acid size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0047] Preparation of organic montmorillonite: Dissolve 4g of inorganic sodium-based montmorillonite in water, heat to 80°C, and keep stirring. According to the cation exchange capacity (CEC) of montmorillonite, add 2.62g of cetyltrimethyl ammonium bromide, and keep stirring for 4h, filter, and wash the filtered modified organic montmorillonite with deionized water until no Br ions in the filtrate can be detected by AgNO3, and the obtained product is air-dried at 60°C for 24h, and ground After passing through a 70-mesh sieve, organic montmorillonite (O-MMT) is obtained.

[0048] The preparation example of montmorillonite / acrylic nano-textile slurry is shown in Table 1. In order to make a certain comparison, except for the quality of the substances added during preparation, the reaction temperature, holding time, heating rate, etc. are all the same.

preparation example

[0051] Taking the synthesis reaction step of example 1 as example, other three reaction steps are all the same as example 1:

[0052] The first step: raw material pretreatment

[0053] (1) Mix 2g of organic montmorillonite, 1.45g of SDBS / OP-10 composite emulsifier, and 160g of water, and ultrasonically disperse for 30min to make it fully mixed until there is no agglomerated particle;

[0054] (2) the acrylic monomer is mixed by each quality of example 1, then add the SDBS / OP-10 composite emulsifier of 1.45g, the acrylic monomer is emulsified;

[0055] (3) Dissolve 0.74 g of persulfate in 50 g of water.

[0056] Step 2: Synthesis

[0057] (1) The solution that is dissolved with organic montmorillonite is transferred to a four-necked flask equipped with a rotor, a condenser and a thermometer, and vigorously stirred;

[0058] (2) Put the emulsified monomer into the monomer dropping device, drop 1 / 6 to 1 / 3 of the amount into the four-necked flask, then put the initiator ...

Embodiment 5

[0065] The slurry and the size film quality test of the slurry of above 4 embodiments:

[0066] Description of sample preparation and test conditions:

[0067] 1. Viscosity test

[0068] Take the slurry and dilute it into a solution with a mass fraction of 4%, and measure the viscosity of the slurry with a NDJ-79 rotary viscometer at 30°C

[0069] 2. Viscosity fluctuation rate

[0070] Dilute the slurry into a solution with a mass fraction of 4%, start timing from rising to 95°C, and heat at 95°C for 60min, 90min, 120min, 150min, and 180min respectively (incubating at 95°C for 3h, The comparison between the extreme difference of the viscosity measured 5 times) and the viscosity value measured at 95°C for 1h is calculated according to the following formula:

[0071]

[0072] In the formula, η″——the viscosity value of the sample measured at 95°C for 1h, mPa·s;

[0073] max(η-η')——respectively at 95°C for 60min, 90min, 120min, 150min, and 180min, and the extreme difference...

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Abstract

The invention relates to organic montmorillonite/acrylic acid size and a preparation method thereof. The size comprises the following raw materials by weight: 2 to 5 portions of organic montmorillonite, 10 to 13 portions of acrylic acid, 35 to 37 portions of ethyl acrylate, 12 to 15 portions of butyl acrylate, 5 to 8 portions of methyl methacrylate, 180 to 220 portions of deionized water, 0.5 to 0.8 portion of initiator, and 2.5 to 3.5 portions of composite emulsifying agent. The preparation method for the size comprises the following steps: preparation of the organic montmorillonite, pretreatment of the raw materials, synthesis of the organic montmorillonite/acrylic acid size, and insulating and cooling processes. The size has the advantages of good sizing performance, convenience for size mixing and small viscosity fluctuation rate, and can reduce or fully replace PVA; and the preparation method has the advantages of simple process, low cost and environmental friendliness, is applicable to industrialized production, and is applicable to sizing for high-grade high-density cotton yarns and high-grade high-density trueran yarn.

Description

technical field [0001] The invention belongs to the field of montmorillonite / acrylic slurry and its preparation, and in particular relates to an organic montmorillonite / acrylic slurry and a preparation method thereof. Background technique [0002] Size has now developed into a tripartite confrontation of modified starch, PVA and acrylic size, among which acrylic size is easy to be degraded by microorganisms because of its environmental friendliness, easy waste water treatment and easy recycling; it can be selected according to different requirements of sizing The tailor-made combination of different monomers and good water solubility are developing more and more rapidly. [0003] Acrylic size has many advantages, but there are also some disadvantages, such as soft but not firm or hard but not tough, serious moisture absorption and stickiness, causing adhesion to machines, easy to form secondary hairiness, etc. Therefore, it is hoped that the deficiencies in these aspects of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08K9/04C08K3/34D06M15/263D06M11/79
Inventor 晏雄张慧萍庄兴民李喜华
Owner DONGHUA UNIV
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