Sizing slurry for bundling quartz yarns and preparation method of sizing slurry

Abstract

The invention provides sizing slurry for quartz yarn bundling and a preparation method, and belongs to the technical field of textile slurry. The sizing slurry comprises polyvinyl alcohol, emulsified oil, oxidized starch, nano SiO2, a defoaming agent, a lubricant, an antistatic agent and water, the solid content of the sizing slurry is 10-15%, and the sizing slurry comprises the following components in parts by mass: 70-80 parts of polyvinyl alcohol, 5-10 parts of emulsified oil, 30-50 parts of oxidized starch, 1-2 parts of nano SiO2, 0.3-0.6 part of the defoaming agent, 2-4 parts of the lubricant and 1-3 parts of the antistatic agent. Uniformly stirring polyvinyl alcohol and half of deionized water, uniformly stirring the other half of deionized water and oxidized starch, mixing the polyvinyl alcohol and the deionized water, adding an auxiliary agent, and boiling to obtain sizing slurry; the method has the advantages of low cost, simple process and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of textile slurries, and relates to a sizing slurry for quartz yarn bundling and a preparation method thereof. Background Art

[0002] The main component of quartz fiber yarn is silicon dioxide, which is consistent with the composition of glass, so its torsional rigidity is very large, the twist coefficient is very low, and the wear resistance is poor. In order to make up for the poor monofilament bundling caused by the low twist coefficient and overcome the disadvantage of low wear resistance, the filament must be sized; during weaving, the quartz yarn is easy to fuzz and break, resulting in unclear openings and difficult weaving. The present invention provides a nano-SiO2 slurry, which can be used in sizing quartz fibers to improve the monofilament bundling of quartz yarn, enhance the yarn strength, improve the yarn wear resistance, and improve the weaving performance.

[0003] The engineering field requires a large amount of sizing material to prepare sizing yarn, and the corresponding amount of nano-SiO2 is also large. The conventional preparation method has a long cycle and low efficiency. The reason: The difficulty in large-scale preparation of nano-SiO2 is mainly due to its complex preparation process, high energy consumption and equipment costs, high technical difficulty, and the dispersion and agglomeration problems of nanoparticles. These factors work together to make the large-scale preparation of nano-SiO2 a very challenging task. Summary of the invention

[0004] The purpose of the present invention is to provide a sizing slurry for quartz yarn bundling in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is to provide a sizing slurry suitable for quartz yarn bundling.

[0005] The purpose of the present invention can be achieved through the following technical scheme: a sizing slurry for quartz yarn bundling, characterized in that it includes polyvinyl alcohol, emulsified oil, oxidized starch, nano-SiO2, defoamer, lubricant, antistatic agent and water, the solid content of the sizing slurry is 10-15%, and the weight percentage is 70-80 parts of polyvinyl alcohol, 5-10 parts of emulsified oil, 30-50 parts of oxidized starch, 1-2 parts of nano-SiO2, 0.3-0.6 parts of defoamer, 2-4 parts of lubricant, and 1-3 parts of antistatic agent.

[0006] Another purpose of this solution is to propose a method for preparing the slurry in view of the existing problems, which is characterized by comprising the following steps:

[0007] 1) Prepare the materials: by weight, take 70-80 parts of polyvinyl alcohol, 5-10 parts of emulsified oil, 30-50 parts of oxidized starch, 1-2 parts of nano-SiO2, 0.3-0.6 parts of defoaming agent, 2-4 parts of lubricant, 1-3 parts of antistatic agent and 800-1000 parts of deionized water;

[0008] 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 20-30°C and stir for 15-30 minutes;

[0009] 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 90-95°C, and stir at this temperature for 0.5-1h;

[0010] 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 90-95°C, and continue stirring for 0.5-1h;

[0011] 5) Cool the mixing barrel to 60-70℃, add emulsified oil, nano-SiO2, defoamer, lubricant and antistatic agent, cook the slurry for 0.6-1.2h under stirring, and detect the solid content to the set value to obtain the sizing slurry.

[0012] Furthermore, the lubricant is L300 and the defoaming agent is Ag290.

[0013] Among them, PVA has good solubility and can be easily dissolved in hot water. Secondly, it has good adhesion to quartz fiber, and the size film formed on the quartz fiber has good strength, wear resistance and stretchability. Emulsified oil plays a positive role in reducing friction, improving size film performance, antistatic and lubricating protection. The application of nano-SiO2 in textile sizing can not only improve the adhesion of fibers and the comprehensive performance of yarns, but also effectively reduce production costs and achieve environmental protection goals. For glass fiber sizing, it can improve the monofilament bundling of glass fiber yarn, enhance yarn strength, improve yarn wear resistance, and improve weaving performance. DETAILED DESCRIPTION

[0014] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0015] Example 1

[0016] 1) Prepare the materials: 80 parts of polyvinyl alcohol, 8 parts of emulsified oil, 50 parts of oxidized starch, 1 part of nano-SiO2, 0.5 parts of defoamer, 2 parts of lubricant, 1 part of antistatic agent and 950 parts of deionized water by mass;

[0017] 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 30°C and stir for 20 minutes;

[0018] 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 95°C, and stir at this temperature for 1 hour;

[0019] 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 95°C, and continue stirring for 1 hour;

[0020] 5) Cool the mixing barrel to 70°C, add emulsified oil, nano-SiO2, defoamer Ag290, lubricant L300 and antistatic agent, cook the slurry under stirring for 1 hour, and detect the solid content to 10% to obtain the sizing slurry, which can be used immediately after preparation.

[0021] Example 2

[0022] 1) Prepare the materials: by weight, take 70 parts of polyvinyl alcohol, 5 parts of emulsified oil, 30 parts of oxidized starch, 1 part of nano-SiO2, 0.5 parts of defoamer, 2 parts of lubricant, 1 part of antistatic agent and 950 parts of deionized water;

[0023] 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 30°C and stir for 20 minutes;

[0024] 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 95°C, and stir at this temperature for 1 hour;

[0025] 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 95°C, and continue stirring for 1 hour;

[0026] 5) Cool the mixing barrel to 70°C, add emulsified oil, nano-SiO2, defoamer Ag290, lubricant L300 and antistatic agent, cook the slurry under stirring for 1 hour, and detect the solid content to 10% to obtain the sizing slurry, which can be used immediately after preparation.

[0027] Example 3

[0028] 1) Prepare the materials: 80 parts of polyvinyl alcohol, 5 parts of emulsified oil, 30 parts of oxidized starch, 1 part of nano-SiO2, 0.3 parts of defoamer, 2 parts of lubricant, 1 part of antistatic agent and 950 parts of deionized water by mass;

[0029] 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 30°C and stir for 20 minutes;

[0030] 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 95°C, and stir at this temperature for 1 hour;

[0031] 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 95°C, and continue stirring for 1 hour;

[0032] 5) Cool the mixing barrel to 70℃, add emulsified oil, nano-SiO2, defoamer Ag290, lubricant L300 and antistatic agent, cook the slurry under stirring for 1 hour, and detect the solid content to 12% to obtain the sizing slurry, which can be used immediately after preparation.

[0033] Example 4

[0034] 1) Prepare the materials: by weight, take 70 parts of polyvinyl alcohol, 5 parts of emulsified oil, 30 parts of oxidized starch, 1 part of nano-SiO2, 0.3 parts of defoamer, 2 parts of lubricant, 1 part of antistatic agent and 800 parts of deionized water;

[0035] 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 30°C and stir for 20 minutes;

[0036] 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 95°C, and stir at this temperature for 0.6h;

[0037] 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 95°C, and continue stirring for 0.6h;

[0038] 5) Cool the mixing barrel to 70°C, add emulsified oil, nano-SiO2, defoamer Ag290, lubricant L300 and antistatic agent, cook the slurry for 0.6h under stirring, and detect the solid content to 15% to obtain the sizing slurry, which can be used immediately after preparation.

[0039] The main performance indicators and measurement methods of the present invention are:

[0040] The sizing agent of the above embodiment was applied to quartz yarn, and the sizing rate and tensile properties of the obtained quartz fiber sized yarn were tested according to the national standards GB / T9914.2-2013 for the determination of combustible content of glass fiber and GB / T7689.5-2013 for the determination of tensile breaking strength and breaking elongation of glass fiber. The results are shown in the following table:

[0041] Nano-SiO2 slurry performance test results

[0042]

[0043] It can be seen from the data in Table 1 that the nano-SiO2 slurry obtained in the present invention can be used in sizing quartz fiber to improve the monofilament bundling of quartz fiber yarn, enhance yarn strength, improve yarn wear resistance, improve weaving performance, and meet the requirements of glass fiber sizing.

[0044] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A sizing material for quartz yarn bundling, characterized in that: The sizing slurry comprises polyvinyl alcohol, emulsified oil, oxidized starch, nano-SiO2, a defoamer, a lubricant, an antistatic agent and water. The solid content of the sizing slurry is 10-15%. Calculated by mass, the sizing slurry comprises 70-80 parts of polyvinyl alcohol, 5-10 parts of emulsified oil, 30-50 parts of oxidized starch, 1-2 parts of nano-SiO2, 0.3-0.6 parts of a defoamer, 2-4 parts of a lubricant and 1-3 parts of an antistatic agent.

2. The sizing material for quartz yarn bundling according to claim 1, characterized in that: The lubricant is L300 and the defoaming agent is Ag290.

3. A method for preparing the sizing slurry as claimed in claim 1, characterized in that: The steps include: 1) Prepare the materials: by weight, take 70-80 parts of polyvinyl alcohol, 5-10 parts of emulsified oil, 30-50 parts of oxidized starch, 1-2 parts of nano-SiO2, 0.3-0.6 parts of defoaming agent, 2-4 parts of lubricant, 1-3 parts of antistatic agent and 800-1000 parts of deionized water; 2) Add polyvinyl alcohol and half of deionized water into the mixing barrel at 20-30°C and stir for 15-30 minutes; 3) Preliminarily mix the oxidized starch and the other half of the deionized water, heat to 90-95°C, and stir at this temperature for 0.5-1h; 4) After the oxidized starch is completely gelatinized, add the gelatinized oxidized starch to the polyvinyl alcohol aqueous solution, control the temperature at 90-95°C, and continue stirring for 0.5-1h; 5) Cool the mixing barrel to 60-70℃, add emulsified oil, nano-SiO2, defoamer, lubricant and antistatic agent, cook the slurry for 0.6-1.2h under stirring, and detect the solid content to the set value to obtain the sizing slurry.

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