CN113429680A - Preparation method of talcum powder master batch for spinning - Google Patents
Preparation method of talcum powder master batch for spinning Download PDFInfo
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- CN113429680A CN113429680A CN202110856770.6A CN202110856770A CN113429680A CN 113429680 A CN113429680 A CN 113429680A CN 202110856770 A CN202110856770 A CN 202110856770A CN 113429680 A CN113429680 A CN 113429680A
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- talcum powder
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- master batch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to the technical field of spinning fibers, in particular to a preparation method of talcum powder master batch for spinning, which is characterized by comprising the following components in parts by weight: homopolymerized propylene, talcum powder, surfactant and dispersant. The invention has the advantages that: 1) the addition amount of the talcum powder can be increased to 10%, the tensile strength of the fabric fiber can reach 42Mpa, and the smoothness and the stiffness are obviously increased. 2) The composite surfactant is adopted, the special performance after various treatments is achieved, the compatibility and the dispersibility among the components are good, when the surface of the fabric fiber is observed, the surface of the fabric fiber is smooth and bright, the surface with poor dispersion is not smooth, the hand feeling is poor, and the dispersibility of the talcum powder is greatly improved by adopting the fabric fiber prepared from the talcum powder master batch. 3) The equipment for preparing the master batch is a double-screw extruder, and can ensure that micromolecules generated in the production process are fully discharged.
Description
Technical Field
The invention relates to the technical field of spinning fibers, in particular to a preparation method of talcum powder master batch for spinning.
Background
The talcum powder is added into the chemical fiber, and the smoothness of the contact surface of the talcum powder and the skin and the capillary effect of the fiber are utilized to keep the smoothness and the dryness of the contact surface of the human body and increase the comfort of the contact of the human body and clothes. The talcum powder is directly added into the material for spinning, and is not easy to disperse uniformly, so that the market urgently needs a talcum powder master batch for spinning to meet the market requirement.
Disclosure of Invention
The invention aims to provide a preparation method of talcum powder master batch for spinning, which overcomes the defects of the prior art, improves the properties of fabric fibers, improves smoothness and stiffness, solves the problems of unsmooth surface and poor hand feeling caused by poor dispersion of components, enables small molecules generated in the production process to be fully discharged, and enables the fibers to have higher strength.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the talcum powder master batch for spinning is characterized by comprising the following components in parts by weight: 80 ‒ 90 parts of homopolymerized propylene, 8 ‒ 12 parts of talcum powder, 0.5 ‒ 8 part of surfactant, 1 ‒ 5 parts of dispersing agent, 1.65-1.67g/cm3 parts of talcum powder master batch and 178-180 ℃ melting point.
The melt index of the homopolymerized propylene is 40g/10min, the molecular weight of the homopolymerized propylene is 60 ten thousand, and the molecular weight distribution width is 4.
The talcum powder is prepared by calcining, and the main component of the talcum powder is hydrous magnesium silicate, wherein the magnesium silicate is more than or equal to 99 percent, the particle size is 4.5-5.5 microns, and the water content is less than 0.1 percent.
The surfactant is prepared from dodecyl siloxane and titanate ester according to the weight part ratio of 1: 1.
The dispersant is an EBS dispersant, and the main component of the dispersant is ethylene bis stearamide which accounts for not less than 98.5 percent by mass.
The surfactant also comprises silane, dodecyl siloxane, silane and titanate with the weight ratio of 1:1
The homopolymerization propylene has a step of removing small molecules, the step of removing the small molecules is to add a flash evaporation process after the polymerization process is completed, flash evaporation equipment is a flash evaporation reaction kettle, the temperature is 220-240 ℃, and the pressure is 0.48-0.55 Mpa.
The calcination process of the talcum powder is to heat the talcum powder to 1450-1500 ℃ in a calciner or a calcining kiln for 3-8 hours, preserve the heat for more than 6 hours, then cool the talcum powder to room temperature, sieve and classify the talcum powder, the hexagonal crystal form in the talcum powder is converted into a monoclinic crystal form, and the ratio of the hexagonal crystal form after calcination is less than 2%.
The talcum powder master batch is prepared by a double-screw extruder, the length-diameter ratio of the extruder is 50-56:1, a melting and mixing section of the extruder is provided with a natural exhaust port and a vacuum exhaust port, the size of the exhaust port is 2cm multiplied by 2cm, and the number of the exhaust ports is more than or equal to 2.
The talcum powder in the talcum powder master batch is calcined, the purity is improved, the particle size distribution is narrow after grading screening, and the talcum powder is added into the fiber to more easily absorb moisture contacted with the body surface due to the fact that water in molecules in the talcum powder is removed through calcination, and then the talcum powder is transferred to the outer surface of the fabric through the capillary effect of the fiber, so that the dry and comfortable contact surface with the human body is achieved, and the wearing comfort of the fabric is improved.
The homopolymerized propylene and the fiber main body resin have good compatibility, thereby ensuring that the talcum powder is uniformly dispersed in the fiber main body resin. The invention adopts homopolymerized propylene which has narrow molecular weight distribution and high fluidity after removing micromolecule, and the prepared fiber has higher strength.
Compared with the prior art, the invention has the beneficial effects that: 1) in the prior art, the addition amount of the talcum powder in the fabric fiber is very low, generally below 3 percent, the talcum powder plays a role of an auxiliary agent in the fabric fiber and has the phenomenon of uneven dispersion, and the tensile strength of the fabric fiber is generally 35 Mpa; by adopting the talcum powder master batch, the filling amount of the talcum powder can be increased to 10%, after the filling amount of the talcum powder is increased, the tensile strength of the fabric fiber can reach 42Mpa, and the smoothness and the stiffness are obviously increased. 2) The talcum powder master batch adopts the composite surfactant, has various special properties after treatment, has good compatibility and dispersibility among the components, and has smooth and bright surface, unsmooth surface with poor dispersibility and poor hand feeling by observing the surface of the fabric fiber. 3) The equipment for preparing the master batch is a double-screw extruder, and can ensure that micromolecules generated in the production process are fully discharged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a preparation method of talcum powder master batch for spinning, which comprises the following components in parts by weight: 80 ‒ 90 parts of homopolymerized propylene, 8 ‒ 12 parts of talcum powder, 0.5 ‒ 8 part of surfactant, 1 ‒ 5 parts of dispersing agent, 1.65-1.67g/cm3 parts of talcum powder master batch and 178-180 ℃ melting point. Wherein: the melt index of the homopolypropylene was 40g/10min, the molecular weight of the homopolypropylene was 60 ten thousand, and the molecular weight distribution width was 4. The talcum powder is prepared by calcining, and its main component is hydrous magnesium silicate, in which magnesium silicate is greater than 99%, its grain size is 4.5-5.5 micrometers, and its water content is less than 0.1%. The surfactant consists of dodecyl siloxane and titanate in the weight ratio of 1: 1. The dispersant is EBS dispersant, and the main component thereof is ethylene bis stearamide with the weight percentage of 99.3 percent. The surfactant also comprises silane, dodecyl siloxane, silane and titanate with the weight ratio of 1:1: 1.
The homopolymerization propylene has a step of removing small molecules, the step of removing the small molecules is to add a flash evaporation process after the polymerization process is finished, flash evaporation equipment is a flash evaporation reaction kettle, the temperature is 230 ℃, and the pressure is 0.5 Mpa.
The calcination process of the talcum powder is that the talcum powder is heated to 1450-1500 ℃ in a calciner or a calcining kiln and calcined for 3-8 hours, the temperature is kept for more than 6 hours, and then the talcum powder is cooled to the room temperature, so that the talcum powder is converted into a monoclinic crystal form from a hexagonal crystal form, and the ratio of the hexagonal crystal form after calcination is less than 2%.
The talcum powder master batch is prepared by a double-screw extruder, and the length-diameter ratio of the extruder is 50-56:1, the melting and mixing section of the extruder is provided with natural exhaust ports, the size of each exhaust port is 2cm multiplied by 2cm, and the number of the exhaust ports is more than or equal to 2.
The proportions of the components of examples 1 to 5 are shown in Table 1.
TABLE 1
| Examples | Kg of homopolypropylene | Talcum powder kg | Kg of surfactant | Kg of dispersant | Flash temperature deg.C | Flash pressure Mpa | Calcination temperature of talc C | Calcination time h of talc |
| Example 1 | 85 | 11 | 6 | 3 | 230 | 0.50 | 1460 | 4 |
| Example 2 | 88 | 10 | 3 | 4 | 235 | 0.53 | 1490 | 7 |
| Example 3 | 82 | 9 | 0.6 | 2 | 225 | 0.49 | 1480 | 6 |
| Example 4 | 81 | 9.5 | 1 | 3.6 | 222 | 0.52 | 1470 | 5 |
| Example 5 | 84 | 10.5 | 2 | 4.3 | 224 | 0.54 | 1485 | 6 |
The main component characteristic parameters in examples 1 to 5 are shown in Table 2.
TABLE 2
The fabric fibers prepared by the melt spinning process in the above examples 1-5 are respectively added with 5-15% of the talcum powder master batch according to the weight percentage of the fabric fibers, and the influence of the talcum powder master batch on the performance of the fabric is analyzed by taking the PP fabric fiber main material as an example. See Table 3
TABLE 3
The comparative examples are shown in Table 4. It is generally considered that the addition amount of 5% of talc is too low to achieve the desired effect, and the optimum addition amount is generally 10%, and the talc content is too high after exceeding 10%, which may cause the performance of the final product to be deteriorated.
TABLE 4
| Rate of moisture absorption | Smoothness of the surface | Rate of wrinkles | Strength of | Remarks for note | |
| PP | 52% | 63% | 89% | 35Mpa | |
| PP + talcum powder 5% | 56% | 72% | 82% | 39Mpa | The surface is not smooth and the dispersion is not uniform |
The test results show that: the higher the moisture absorption rate, the better the slipperiness, the higher the wrinkle rate and the lower the stiffness, that is, the higher the wrinkle rate, the better the strength. The key point of the invention is that the adopted talcum powder is specially treated, the structure is changed, and the obtained talcum powder is more suitable for spinning.
The change in structure of talc was shown by the refractive index, transmittance and scattering rate of light passing through it, as shown in Table 5.
TABLE 5
| Components | Refractive index | Transmittance of light | Scattering power | Remarks for note |
| Common talcum powder | 26% | 83% | 57% | Hexagonal crystal form |
| Calcined talc powder | 33% | 72% | 89% | Monoclinic crystal form |
In the prior art, little or no talc is applied to the spinning. According to the invention, the talcum powder and the homopolymerized propylene are synthesized into the master batch, so that the talcum powder is fully coated and activated, and the talcum powder can be fully mixed and homogenized with the polypropylene (fabric fiber main material) for spinning. The parameters for adequate coating and activation are demonstrated by spinning experiments. The yarn obtained after full coating and activation has high yield and less yarn breakage, the screen changing time of the filter screen in the spinning process is greatly prolonged, and the quality of the finished yarn is shown in table 6.
TABLE 6
| Components | Time to change network | Qualification rate of finished yarn | Degree of uniformity of filaments |
| PP | 24 hours | 95% | Uniformity |
| 10 percent of PP and talcum powder | 5 hours | 85% | Unevenness of |
| 15 percent of PP and talcum powder master batch | 15 hours | 90% | Uniformity |
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The preparation method of the talcum powder master batch for spinning is characterized by comprising the following components in parts by weight: 80 portions of homopolypropylene ‒ portions, 8 portions of talcum powder ‒ portions, 0.5 portion ‒ portion of surfactant, 1 ‒ portions of dispersing agent, and the density of talcum powder master batch is 1.65-1.67g/cm3Melting point 178-.
2. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the melt index of the homopolymerized propylene is 40g/10min, the molecular weight of the homopolymerized propylene is 60 ten thousand, and the molecular weight distribution width is 4.
3. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the talcum powder is prepared by calcining, and the main component of the talcum powder is hydrous magnesium silicate, wherein the magnesium silicate is more than or equal to 99 percent, the particle size is 4.5-5.5 microns, and the water content is less than 0.1 percent.
4. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the surfactant is prepared from dodecyl siloxane and titanate ester according to the weight part ratio of 1: 1.
5. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the dispersant is an EBS dispersant, and the main component of the dispersant is ethylene bis stearamide which accounts for not less than 98.5 percent by mass.
6. The preparation method of the talc powder masterbatch for spinning according to claim 4, wherein the talc powder masterbatch comprises: the surfactant also comprises silane, dodecyl siloxane, silane and titanate with the weight ratio of 1:1
The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the homopolymerization propylene has a step of removing small molecules, the step of removing the small molecules is to add a flash evaporation process after the polymerization process is completed, flash evaporation equipment is a flash evaporation reaction kettle, the temperature is 220-240 ℃, and the pressure is 0.48-0.55 Mpa.
7. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the calcination process of the talcum powder is to heat the talcum powder to 1450-1500 ℃ in a calciner or a calcining kiln for 3-8 hours, preserve the heat for more than 6 hours, then cool the talcum powder to room temperature, sieve and classify the talcum powder, the hexagonal crystal form in the talcum powder is converted into a monoclinic crystal form, and the ratio of the hexagonal crystal form after calcination is less than 2%.
8. The preparation method of the talcum powder masterbatch for spinning according to claim 1, which is characterized by comprising the following steps: the talcum powder master batch is characterized in that the talcum powder master batch is prepared by a double-screw extruder, the length-diameter ratio of the extruder is 50-56:1, a melting and mixing section of the extruder is provided with a natural exhaust port and a vacuum exhaust port, the size of the exhaust port is 2cm multiplied by 2cm, and the number of the exhaust ports is more than or equal to 2.
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| CN202110856770.6A CN113429680A (en) | 2021-07-28 | 2021-07-28 | Preparation method of talcum powder master batch for spinning |
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| CN202110856770.6A CN113429680A (en) | 2021-07-28 | 2021-07-28 | Preparation method of talcum powder master batch for spinning |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158059A (en) * | 2007-11-08 | 2008-04-09 | 天津市赛远保健品有限公司 | Moisture absorbent soft polypropylene fibre and method for manufacturing same |
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- 2021-07-28 CN CN202110856770.6A patent/CN113429680A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158059A (en) * | 2007-11-08 | 2008-04-09 | 天津市赛远保健品有限公司 | Moisture absorbent soft polypropylene fibre and method for manufacturing same |
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Application publication date: 20210924 |