A continuous spunbonded filament oil containing a modified aid, its preparation method and application

Abstract

The present application relates to the field of chemical auxiliaries, and particularly relates to a continuous spun-bonded viscose filament oil agent containing slurry, a preparation method and application thereof. The continuous spun-bonded viscose filament oil agent containing slurry comprises a compound of the following components: modified polyacrylic acid emulsion, 40-70 parts; anti-adhesive agent, 0.2-2 parts; antioxidant, 0.1-1 part; bactericide, 0.1-1 part. The oil agent has good stability, can be uniformly distributed on the surface of the viscose filament, improves the spinnability of the fiber, and the oil agent is easy to remove and degradable, and does not pollute the environment.

Description

Technical Field

[0001] This invention relates to the field of chemical auxiliaries, and more particularly to a continuous spinning viscose filament oiling agent containing sizing agent, its preparation method, and its application. Background Technology

[0002] Continuous spinning of viscose filaments requires the application of oils and sizing agents during production to impart properties such as lubricity, cohesion, and antistatic properties to meet the needs of subsequent secondary fiber processing or textile processes. In the field of continuous spinning viscose filaments, commonly used sizing agents include starch and polyvinyl alcohol (PVA). Starch sizing agents have low film strength, resulting in poor cohesion of the oiled viscose filaments, which cannot meet the production requirements of a variety of products. Although PVA sizing agents possess characteristics such as strong and tough film with good abrasion resistance, their regular molecular arrangement and poor biodegradability lead to environmental pollution after desizing, seriously impacting the ecological environment.

[0003] In recent years, with the increasing awareness of environmental protection, green textiles and green sizing agents have begun to attract attention. Polyacrylic acid sizing agents, due to their diverse molecular structures, good water solubility, and easy biodegradability, are used to replace starch and polyvinyl alcohol. However, polyacrylic acid sizing agents are hygroscopic and prone to sticking to rollers, limiting their application in the continuous spinning of viscose filaments. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a sizing agent for continuous spun viscose filaments, its preparation method, and its application.

[0005] The technical solution of the present invention is as follows: a continuous spun viscose filament oiling agent containing modified auxiliaries, comprising a composition of the following components compounded in parts by mass:

[0006] Modified polyacrylic acid emulsion, 40-70 parts;

[0007] Anti-sticking agent, 0.2 to 2 parts;

[0008] Antioxidant, 0.1 to 1 part;

[0009] Fungicide, 0.1 to 1 part.

[0010] The aforementioned continuous spun viscose filament oil containing modified auxiliaries comprises a modified polyacrylic emulsion prepared by emulsion polymerization of acrylic acid or acrylate monomers, phosphate acrylate monomers, emulsifier OP-10, and initiator azobisisobutyronitrile in an aqueous solution, followed by reaction of the prepared product with allyl polyether to finally obtain the modified acrylic emulsion. The modified acrylic emulsion is prepared by weight of 20-30 parts of acrylic acid or acrylate monomers, 20-35 parts of phosphate acrylate monomers, 1-6 parts of emulsifier OP-10, 1-5 parts of initiator azobisisobutyronitrile, 60-120 parts of deionized water, and 30-60 parts of allyl polyether.

[0011] Preferably, in the above-mentioned continuous spinning viscose filament oil containing modified auxiliaries, the acrylic or acrylate monomer is one or more of methacrylic acid, methyl methacrylate, butyl acrylate, ethyl acrylate, hydroxyethyl acrylate, butyl methacrylate, and isobutyl methacrylate.

[0012] Preferably, in the above-mentioned continuous spinning viscose filament oil containing modified auxiliaries, the acrylate phosphate monomer is acrylate monophosphate or acrylate diphosphate.

[0013] Preferably, in the above-mentioned continuous spun viscose filament oil containing modified auxiliaries, the allyl polyether is one of allyl polyoxyethylene ether, allyl polyoxypropylene ether, and allyl polyoxyethylene polyoxypropylene ether.

[0014] Preferably, in the above-mentioned continuous spun viscose filament oil containing modified auxiliaries, the anti-sticking agent is one of emulsified silicone oil, emulsified methyl silicone oil, emulsified amino silicone oil, or emulsified hydrogen-containing silicone oil.

[0015] Preferably, in the above-mentioned continuous spun viscose filament oil containing modified auxiliaries, the antioxidant is one of 2,6-di-tert-butyl-4-methylphenol, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and 4,4-methylenebis(2,6-di-tert-butylphenol).

[0016] Preferably, in the above-mentioned continuous spun viscose filament oiling agent containing modified auxiliaries, the bactericide is one of isothiazolinone, glutaraldehyde, and sodium pyridine sulfate.

[0017] The preparation method of the above-mentioned continuous spun viscose filament oil containing modified auxiliaries is carried out according to the following steps:

[0018] (1) Add acrylic acid or acrylate monomer, phosphate acrylate monomer and emulsifier OP-10 to deionized water, and fully shear emulsify at room temperature using a high-speed disperser to obtain a pre-emulsion;

[0019] (2) Then add the initiator azobisisobutyronitrile, and add it dropwise within 3 hours. After reacting for 1 hour, raise the temperature to 150°C, add allyl polyether, and react for 2 hours to obtain the modified polyacrylic acid emulsion.

[0020] (3) Add anti-sticking agent, antioxidant and bactericide to modified polyacrylic acid emulsion to obtain continuous spun viscose filament oil containing slurry.

[0021] The application of the above-mentioned continuous spinning viscose filament oil containing modified auxiliaries in viscose filaments is characterized in that the continuous spinning viscose filament oil containing modified auxiliaries is applied to the viscose filaments at an amount of 0.2 to 2% relative to the mass of the viscose filaments.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a continuously spun viscose filament oiling agent containing sizing agent that exhibits excellent stability. The synthesized main component is a single component, preventing stratification between the oiling agent and the sizing agent. The synthesized modified polyacrylic acid emulsion not only possesses the cohesive properties of the sizing agent but also incorporates antistatic properties from the introduced phosphate ester groups and lubricating properties from the polyether groups. After oiling, the viscose filaments do not suffer from uneven distribution of the oiling agent and sizing agent on the fiber, thus improving the fiber's spinnability. During downstream refining processes, the oiling agent is easily removed without residue, does not affect subsequent dyeing, and is biodegradable, causing no environmental pollution. Detailed Implementation

[0024] The content and technical solutions of the present invention are further described below with reference to specific embodiments, but the present invention is not limited to these embodiments.

[0025] Example 1

[0026] A continuous spun viscose filament oiling agent containing sizing agent, formulated in the following proportions by weight:

[0027]

[0028] The preparation method is as follows: 25 parts of methyl methacrylate, 25 parts of phosphate monoacrylate monomer and 3 parts of emulsifier OP-10 are added to 80 parts of deionized water and fully sheared and emulsified by a high-speed disperser at room temperature to obtain a pre-emulsion;

[0029] Then add 2 parts of initiator azobisisobutyronitrile, and add it dropwise over 3 hours. After reacting for 1 hour, raise the temperature to 150°C, add 35 parts of allyl polyoxypropylene ether, and react for 2 hours to obtain modified polyacrylic acid emulsion.

[0030] Add 0.5 parts of emulsified methyl silicone oil, 0.4 parts of 2,6-di-tert-butyl-4-methylphenol, and 0.4 parts of isothiazolinone to a modified polyacrylic acid emulsion to obtain a continuous sizing viscose filament oil containing sizing agent.

[0031] Example 2

[0032] A continuous spun viscose filament oiling agent containing sizing agent, formulated in the following proportions by weight:

[0033]

[0034] The preparation method is as follows: 22 parts of butyl acrylate, 26 parts of phosphate monoacrylate monomer and 4 parts of emulsifier OP-10 are added to 90 parts of deionized water and fully sheared and emulsified by a high-speed disperser at room temperature to obtain a pre-emulsion;

[0035] Then add 3 parts of initiator azobisisobutyronitrile, and add it dropwise over 3 hours. After reacting for 1 hour, raise the temperature to 150°C, add 45 parts of allyl polyoxyethylene ether, and react for 2 hours to obtain modified polyacrylic acid emulsion.

[0036] Add 0.8 parts of emulsified amino silicone oil, 0.6 parts of 2,6-di-tert-butyl-4-methylphenol, and 0.5 parts of isothiazolinone to a modified polyacrylic acid emulsion to obtain a continuous sizing viscose filament oil containing sizing agent.

[0037] Example 3

[0038] A continuous spun viscose filament oiling agent containing sizing agent, formulated in the following proportions by weight:

[0039]

[0040] The preparation method is as follows:

[0041] 20 parts of ethyl acrylate, 30 parts of bisphosphate acrylate monomer and 4 parts of emulsifier OP-10 were added to 95 parts of deionized water and fully sheared and emulsified at room temperature using a high-speed disperser to obtain a pre-emulsion.

[0042] Then add 3 parts of initiator azobisisobutyronitrile, which is added dropwise over 3 hours. After reacting for 1 hour, the temperature is raised to 150°C, and 52 parts of allyl polyoxypropylene ether are added. The reaction is carried out for 2 hours to obtain modified polyacrylic acid emulsion.

[0043] Add 0.6 parts of emulsified hydrogen-containing silicone oil, 0.5 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] and 0.5 parts of glutaraldehyde to a modified polyacrylic acid emulsion to obtain a continuous sizing viscose filament oil containing sizing agent.

[0044] Example 4

[0045] A continuous spun viscose filament oiling agent containing sizing agent, formulated in the following proportions by weight:

[0046]

[0047]

[0048] 24 parts of butyl methacrylate, 32 parts of bisphosphate acrylate monomer and 5 parts of emulsifier OP-10 were added to 100 parts of deionized water and fully sheared and emulsified at room temperature using a high-speed disperser to obtain a pre-emulsion.

[0049] Then add 3 parts of initiator azobisisobutyronitrile, and add it dropwise over 3 hours. After reacting for 1 hour, raise the temperature to 150°C, add 48 parts of allyl polyoxyethylene polyoxypropylene ether, and react for 2 hours to obtain modified polyacrylic acid emulsion.

[0050] Add 1 part of emulsified hydrogen-containing silicone oil, 0.6 parts of 4,4-methylenebis(2,6-di-tert-butylphenol), and 0.5 parts of sodium pyridine sulfate to a modified polyacrylic acid emulsion to obtain a continuous sizing viscose filament oil containing sizing agent.

[0051] Example 5

[0052] The oils prepared in Examples 1 to 4 above were dissolved in deionized water to prepare working solutions with a concentration of 60 g / L. The oils were then applied to the fibers during continuous viscose filament spinning and the fiber performance was tested.

[0053] The stability of the oil was tested by low-temperature and high-temperature storage. 100 ml of sample was placed in a refrigerator at (-3 to -10) ℃ for 24 h. After being taken out and restored to room temperature, it was observed whether crystallization or precipitation occurred. 100 ml of sample was placed in an incubator at (40±1) ℃ for 24 h. After being taken out, it was immediately observed whether layering or turbidity occurred.

[0054] Cohesion testing machines were used to test fibers treated with different oils. Viscose filaments were wound back and forth on hooks from left to right, with nine hooks on the left and ten on the right. Finally, the viscose filaments were pressed tightly under knurled nuts, resulting in a total of 20 filaments. To ensure appropriate tension on the viscose filaments, a weight was hung inside the ring at the end of the chain. The area under the knurled nuts was the friction zone, where the viscose filaments could bend under tension. During reciprocating motion, the sample filaments underwent bending friction between the alternating friction plates. The test was terminated when more than half (10 filaments) of the sample filaments developed a 6 mm long crack, and the number of friction cycles was recorded.

[0055] The oil has good stability, and the continuous spun viscose filament is not easy to stick to the roller during the production process. The fiber has excellent lubricity, and the filament bundle is tightly bound, which can meet the production needs. The performance indicators of the oil and fiber are shown in Table 1.

[0056] Table 1 Performance Indicators of Oils and Fibers

[0057]

[0058] The modified polyacrylic acid emulsion synthesized in this invention not only possesses the cohesive properties of slurry, but also has antistatic properties due to the introduced phosphate ester groups and lubrication properties due to the introduced polyether groups, thus meeting the requirements for production and use.

Claims

1. A continuous spunbonded filament finish containing a modifying aid characterized in that, The composition comprises the following components compounded by mass fraction: modified polyacrylic emulsion, 40-70 parts; anti-sticking agent, 0.2-2 parts; antioxidant, 0.1-1 part; bactericide, 0.1-1 part; The modified polyacrylic emulsion is prepared by emulsion polymerization of acrylic acid or acrylate monomer, acrylic acid phosphate monomer, emulsifier OP-10 and initiator azobisisobutyronitrile in aqueous solution, and then reacting the product with allyl polyether, wherein the acrylic acid or acrylate monomer is 20-30 parts by weight, the acrylic acid phosphate monomer is 20-35 parts by weight, the emulsifier OP-10 is 1-6 parts, the initiator azobisisobutyronitrile is 1-5 parts, the amount of deionized water is 60-120 parts, and the allyl polyether is 30-60 parts.

2. A continuous spunbonded filament finish containing a modifying aid according to claim 1, characterized in that The acrylic acid or acrylate monomer is one or more of methyl methacrylate, methyl methacrylate, butyl acrylate, ethyl acrylate, hydroxyethyl acrylate, butyl methacrylate, and isobutyl methacrylate.

3. A continuous spunbonded filament oil containing a modifying adjuvant according to claim 1, characterized in that, The acrylic acid phosphate monomer is acrylic acid monophosphate or acrylic acid diphosphate.

4. A continuous spunbonded filament oil containing a modifying adjuvant according to claim 1, characterized in that, The allyl polyether is one of allyl polyoxyethylene ether, allyl polyoxypropylene ether, and allyl polyoxyethylene polyoxypropylene ether.

5. A continuous spunbonded filament oiling agent containing a modifying adjuvant according to claim 1, characterized in that, The anti-sticking agent is one of emulsified silicone oil, emulsified methyl silicone oil, emulsified amino silicone oil, and emulsified hydrogen-containing silicone oil.

6. A continuous spunbonded filament oiling agent containing a modifying adjuvant according to claim 1, characterized in that, The antioxidant is one of 2,6-di-tert-butyl-4-methylphenol, tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, and 4,4-methylenebis(2,6-di-tert-butylphenol).

7. A continuous spunbonded filament oiling agent containing a modifying adjuvant according to claim 1, characterized in that, The bactericide is one of isothiazolinone, glutaraldehyde, and pyridine sodium sulfate.

8. A process for the preparation of a continuous, spunbonded, adhesive filament oil containing a modifying aid as claimed in any one of claims 1 to 7, characterized in that The following steps are followed: (1) The acrylic acid or acrylate monomer, acrylic acid phosphate monomer, and emulsifier OP-10 are added to deionized water and emulsified by high-speed dispersion at room temperature, obtaining a pre-emulsion; (2) Then the initiator azobisisobutyronitrile is added and dropped within 3 hours, and after 1 hour of reaction, the temperature is raised to 150°C, the allyl polyether is added, and the reaction is carried out for 2 hours, obtaining the modified polyacrylic emulsion; (3) The anti-sticking agent, antioxidant, and bactericide are added to the modified polyacrylic emulsion, obtaining a continuous spun-bond viscose filament oil containing slurry.

9. Use of a continuous spun-bonded viscose filament finish containing a modifying adjuvant according to claim 1 in viscose filaments, characterized in that, The continuous spun-bond viscose filament oil containing the modified auxiliary of claim 1 is attached to the viscose filament in an amount of 0.2-2% relative to the mass of the viscose filament.

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