CN110358189B - Non-woven fabric soft master batch and preparation method thereof - Google Patents
Non-woven fabric soft master batch and preparation method thereof Download PDFInfo
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- CN110358189B CN110358189B CN201910652750.XA CN201910652750A CN110358189B CN 110358189 B CN110358189 B CN 110358189B CN 201910652750 A CN201910652750 A CN 201910652750A CN 110358189 B CN110358189 B CN 110358189B
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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
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- 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
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- 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
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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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
- 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
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
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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)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a non-woven fabric soft master batch which is characterized by comprising the following components in parts by weight: 75-85 parts of carrier, 14-24 parts of additive and 0.3-0.9 part of active assistant, wherein the carrier is polypropylene homopolymer, the additive is oleamide and erucamide, and the active assistant is one or two of di-tert-butyl peroxide and dibenzoyl peroxide. The preparation method of the master batch comprises the following steps: the preparation method comprises the steps of proportioning the components in parts by weight, preheating and mixing erucamide powder and an active assistant in a high-speed mixer, then putting the mixture and other components into a co-rotating double-screw extruder for blending, extruding, drawing and granulating to obtain the non-woven fabric soft master batch. The soft component of the non-woven fabric soft master batch prepared by the invention can be quickly and stably separated out, a good softening effect is achieved, the influence of factors such as environment and the like is reduced, and the softness of the product can be ensured on the premise of not increasing the cost of raw materials.
Description
Technical Field
The invention relates to a master batch and a preparation method thereof, in particular to a non-woven fabric soft master batch and a preparation method thereof.
Background
In the preparation process of the non-woven fabric, polypropylene is re-pressed into the non-woven fabric through spinning, the surface of the conventionally produced non-woven fabric is rough, the hand feeling is hard, and the comfort is low. In order to increase the softness and improve the hand feeling of the non-woven fabric, soft master batches need to be added into polypropylene, and the active ingredients of the soft master batches applied to the non-woven fabric at present are mainly organic silicon and fatty acid amides.
The organosilicon molecular polymer has easily obtained raw materials and lower price, but has poor compatibility with resin materials, and the dispersibility of the organosilicon molecular polymer in resin needs to be improved by modifying or adding a dispersing agent, so that the cost and the production complexity are increased.
The fatty amide raw materials are wide, mainly comprise lauramide, stearic acid amide, oleic acid amide, erucic acid amide and the like, have good compatibility with resin, and are well dispersed in the resin. Wherein: lauramide is combustible and toxic, stearic acid amide is insoluble in water and does not absorb moisture, oleic acid amide is low in price, quick in precipitation, easy to yellow and age, erucamide is good in thermal stability and does not yellow but slowly precipitates. Generally, the precipitation of the softening component is influenced by factors such as time, ambient temperature, and softener content per unit area, and the precipitation is more and faster as the time is longer, the temperature is higher, and the softener content is higher, and conversely, the precipitation is less and slower, so that the softening effect is uncontrollable. Only by conventionally adding the soft master batches of the oleamide and the erucamide, after the preparation of the non-woven fabric is finished, the precipitation effect and the precipitation time are not controllable, so that the non-woven fabric produced by a customer by using the soft master batches needs to be placed for a period of days or even half a month, and the optimal softening effect can be reflected.
Disclosure of the invention
In order to solve the problems that the existing soft master batch is low in softness and uncontrollable in effect, and the non-woven fabric produced by using the soft master batch is long in standing time, the invention provides the non-woven fabric soft master batch and the preparation method thereof.
In order to achieve the above purpose, the technical problem solved by the present invention is realized by adopting the following technical scheme:
the invention provides a non-woven fabric soft master batch which is characterized by comprising the following components in parts by weight: 75-85 parts of a carrier, 14-24 parts of an additive and 0.3-0.9 part of a coagent, wherein the carrier is a polypropylene homopolymer, the additive is oleamide and erucamide, and the coagent is one or two of di-tert-butyl peroxide and dibenzoyl peroxide.
Preferably, the weight parts of the additive are 6-9 parts of oleamide and 8-15 parts of erucamide.
Preferably, the particle size of the erucamide is 2-10 μm.
Preferably, the filtering value of the soft master batch is 0.05-0.1kg/cm2·min。
The invention also provides a preparation method for realizing the non-woven fabric soft master batch, which is characterized by comprising the following steps of: the preparation method comprises the following steps of firstly mixing the components in parts by weight, preheating and mixing erucamide powder and an active assistant in a high-speed mixer, then putting the mixture and other components into a co-rotating double-screw extruder for blending, extruding, drawing and granulating to obtain the non-woven fabric soft master batch.
Further, the pre-heating mixing time of the erucamide powder and the active assistant in the high-speed mixer is 5 min.
Further, the screw diameter D of the co-rotating twin-screw extruder is 71mm, the length-diameter ratio L/D is 60, the main machine rotation speed is 350-: zone 1 at 140 deg.C, zone 2 at 170 deg.C, zone 3-9 at 200 deg.C, zone 10-11 at 205 deg.C, and die temperature at 220 deg.C.
Further, the pelletizing mode is water-cooling pelletizing.
The invention has the beneficial effects that: simultaneously, oleic acid amide and erucic acid amide are adopted as lubricating additives, the relationship between cost and softness performance is balanced, and the filtering value of the soft master batch is 0.05-0.1kg/cm2Min. The peroxide is used as the active assistant in the formula, so that the precipitation time and the effect of the erucamide are controllable, namely the soft component is rapidly precipitated in the non-woven fabric, the precipitation can be ensured to be completed within 24 hours even in a low-temperature environment, and a good softening effect is embodied. The addition proportion of the soft master batch is small, only 1% -3%, and the processing technology of the non-woven fabric is not required to be adjusted, so that the prepared non-woven fabric has excellent softness, glossiness and elasticity, and the yarn is not blocked or broken in the preparation process.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to be limiting.
The non-woven fabric soft master batch comprises the following components in parts by weight: 75-85 parts of carrier, 14-24 parts of additive and 0.3-0.9 part of active assistant. Wherein: the carrier is polypropylene homopolymer, the additive is oleamide and erucamide, the weight proportion is 6-9 parts of oleamide and 8-15 parts of erucamide, wherein the particle size of the erucamide is 2-10 μm.
The oleamide and the erucamide are added into the resin as the lubricant and are not grafted on the resin, and the lubricating effect is embodied in that the oleamide and the erucamide can be separated out on the surface of the material to form an oily surface, so that the lubricating property of the surface of the material is improved, and the friction coefficient of the surface of the material is reduced.
The active assistant is peroxide, is one or two of di-tert-butyl peroxide and dibenzoyl peroxide, and has the following mechanism as an initiator: peroxide is heated to generate homolytic cracking to generate two alkoxy radicals, the alkoxy radicals abstract hydrogen atoms from an olefinic bond of erucamide to generate an erucamide free radical, the erucamide free radical is unstable, and finally the two erucamide free radicals are combined to recover a stable state, the molecular weight of the combined erucamide is increased, the combined erucamide is poorly dispersed in a matrix material, gaps among polypropylene molecules are not enough to accommodate the combined erucamide, and the combined erucamide is separated out from the surface of the matrix material, and the chemical reaction formula is as follows:
thus, when the coagent and erucamide are pre-heated and mixed in the high speed mixer, the erucamide is fully activated and compounds of greater molecular weight are formed. Meanwhile, the unreacted peroxide can be used as a molecular weight regulator and improves the fluidity of polypropylene, and the yarn is not blocked or broken in the subsequent preparation of non-woven fabrics, so that a product with narrow molecular weight distribution and uniform spinning is obtained.
The preparation method of the non-woven fabric soft master batch comprises the following steps: the preparation method comprises the steps of firstly, proportioning the components in parts by weight, then preheating and mixing erucamide powder and an active assistant in a high-speed mixer, fully activating erucamide by peroxide for 5min, then blending the erucamide powder and the active assistant together, putting the mixture and other components into a co-rotating double-screw extruder for blending, extruding, drawing and cutting into granules to obtain the non-woven fabric soft master batch. The diameter D of a screw of the co-rotating twin-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of a main machine is 350-450Hz, the rotating speed of a batch feeder is 400-450Hz, and the temperature control of a screw cylinder is set as follows: zone 1 at 140 deg.C, zone 2 at 170 deg.C, zone 3-9 at 200 deg.C, zone 10-11 at 205 deg.C, and die temperature at 220 deg.C. The pelletizing mode is water cooling pelletizing.
Example 1:
the non-woven fabric soft master batch comprises the following components in parts by weight: 82 parts of polypropylene resin, 10 parts of erucamide, 7 parts of oleamide and 0.6 part of di-tert-butyl peroxide.
The preparation method of the non-woven fabric soft master batch comprises the following steps: firstly, erucamide powder and di-tert-butyl peroxide are heated and mixed in a high-speed mixer, the rotating speed is 1000 r/min, the temperature is 70 ℃, and the time is 5 min. And then, carrying out melt extrusion on the activated erucamide, oleamide and polypropylene resin in a co-rotating twin-screw extruder, wherein the rotating speed of a main machine is 380Hz, and the rotating speed of a batch feeder is 410 Hz. And finally, carrying out water-cooling granulation.
The softening master batch prepared in the example has a filtration value of 0.085kg/cm2Min, the melt index is 258g/10min, the softness of the non-woven fabric prepared by using the soft master batch is 55mN, the friction coefficient is 0.52N, and the precipitation time of the soft component is 8 h.
Example 2:
the non-woven fabric soft master batch comprises the following components in parts by weight: 78 parts of polypropylene resin, 13 parts of erucamide, 8 parts of oleamide and 0.8 part of di-tert-butyl peroxide.
The preparation method of the non-woven fabric soft master batch comprises the following steps: first, erucamide powder and di-tert-butyl peroxide are heated and mixed in a high-speed mixer at the rotation speed of 1100 r/min and the temperature of 75 ℃ for 5 min. And then, carrying out melt extrusion on the activated erucamide, oleamide and polypropylene resin in a co-rotating twin-screw extruder, wherein the rotating speed of a main machine is 360Hz, and the rotating speed of a batch feeder is 420 Hz. And finally, carrying out water-cooling granulation.
The softening master batch prepared in the example has a filtration value of 0.068kg/cm2Min, using the softening at 267g/10minThe softness of the non-woven fabric prepared from the master batch is 42mN, the friction coefficient is 0.46N, and the precipitation time of the soft component is 6 h.
Example 3:
the non-woven fabric soft master batch comprises the following components in parts by weight: 76 parts of polypropylene resin, 15 parts of erucamide, 9 parts of oleamide, 0.4 part of di-tert-butyl peroxide and 0.5 part of dibenzoyl peroxide.
The preparation method of the non-woven fabric soft master batch comprises the following steps: first, erucamide powder, di-tert-butyl peroxide and dibenzoyl peroxide are heated and mixed in a high-speed mixer at the rotation speed of 1100 r/min and the temperature of 75 ℃ for 5 min. And then, carrying out melt extrusion on the activated erucamide, oleamide and polypropylene resin in a co-rotating twin-screw extruder, wherein the rotating speed of a main machine is 420Hz, and the rotating speed of a batch feeder is 410 Hz. And finally, carrying out water-cooling granulation.
The softening master batch prepared in the example has a filtration value of 0.067kg/cm2Min, melt index 235g/10min, softness of the non-woven fabric prepared from the softening master batch is 40mN, friction coefficient is 0.45N, and precipitation time of a softening component is 11 h.
Comparative example 1:
the non-woven fabric soft master batch comprises the following components in parts by weight: 83 parts of polypropylene resin, 10 parts of erucamide and 7 parts of oleamide.
The soft master batch prepared by the comparative example has a filtration value of 0.015kg/cm2Min, melt index 133g/10min, softness of 82mN for nonwoven fabric made from the softening master batch, friction coefficient 0.73N, and time for precipitation of softening component>48h。
Comparative example 2:
the non-woven fabric soft master batch comprises the following components in parts by weight: 76 parts of polypropylene resin, 15 parts of erucamide and 9 parts of oleamide.
The soft master batch prepared by the comparative example has the filtration value of 0.009kg/cm2Min, melt index 87g/10min, softness of 45mN for nonwoven fabric made from the softening master batch, friction coefficient 0.49N, and time for precipitation of softening component>60h。
In order to further illustrate the superior effects of the non-woven fabric master batch and the non-woven fabric produced by applying the master batch of the invention, the performance of the non-woven fabric at room temperature of 25 ℃ is compared with the performance of the existing product, and the specific product technical parameter comparison table is as follows:
comparison table of technical parameters of the invention and the existing products
As can be seen from the above table, compared with comparative examples 1 and 2, the non-woven fabric softening master batch prepared by the invention adopts oleamide and erucamide as lubricating additives to be added into resin, and because the oleamide and the erucamide are not grafted on the resin but are precipitated on the surface of the material to form an oily surface, the friction coefficient of the product is reduced, and the softness of the product is greatly improved. Meanwhile, peroxide is used as an initiator, the peroxide is heated to generate homolytic cracking to generate an erucamide free radical, the erucamide free radical is unstable, and finally two erucamide free radicals are combined to restore a stable state, the molecular weight of the combined erucamide is increased, the erucamide is poorly dispersed in a base material, and gaps among polypropylene molecules are insufficient to accommodate the combined erucamide, so that the erucamide is separated out on the surface of the base material. Meanwhile, the unreacted peroxide is used as a molecular weight regulator to improve the fluidity of the polypropylene, and the filtration value and the melt index of the master batch are both greatly improved.
As can be seen from comparative examples 1 and 2, in the non-woven fabric prepared by the softening master batch without the addition of the active auxiliary agent, the precipitation time of the softening component is long; the softness of the nonwoven is also poor.
Therefore, the non-woven fabric soft master batch prepared by the invention has excellent filtering value and melt index, the non-woven fabric has good softness, the friction coefficient is small, the soft component is quickly separated out from the non-woven fabric, and a good softening effect is embodied.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (7)
1. The non-woven fabric soft master batch is characterized by comprising the following components in parts by weight: 75-85 parts of a carrier, 14-24 parts of an additive and 0.3-0.9 part of a coagent, wherein the carrier is a polypropylene homopolymer, the additive is oleamide and erucamide, and the coagent is one or two of di-tert-butyl peroxide and dibenzoyl peroxide;
the preparation method of the non-woven fabric soft master batch comprises the following steps:
the preparation method comprises the following steps of firstly mixing the components in parts by weight, then preheating and mixing erucamide powder and an active assistant in a high-speed mixer, then putting the erucamide powder and the active assistant into a co-rotating double-screw extruder together with other components for blending, extruding, drawing and granulating to obtain the non-woven fabric soft master batch.
2. The nonwoven fabric softener masterbatch of claim 1, wherein: the additive comprises 6-9 parts of oleamide and 8-15 parts of erucamide by weight.
3. The nonwoven fabric softener masterbatch of claim 2, wherein: the particle size of the erucamide is 2-10 mu m.
4. The nonwoven fabric softener masterbatch of any one of claims 1-3, wherein: the filtration value of the non-woven fabric soft master batch is 0.05-0.1kg/cm2 & min.
5. The nonwoven fabric softener masterbatch of claim 1, wherein: the erucamide powder and the active assistant are pre-heated and mixed in a high-speed mixer for 5 min.
6. The nonwoven fabric softener masterbatch of claim 1, wherein: the diameter D of the screw of the co-rotating twin-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of the main machine is 350-450Hz, the rotating speed of the batch feeder is 400-450Hz, and the temperature control of the screw cylinder is set as follows: zone 1 at 140 deg.C, zone 2 at 170 deg.C, zone 3-9 at 200 deg.C, zone 10-11 at 205 deg.C, and die temperature at 220 deg.C.
7. The nonwoven fabric softener masterbatch of claim 1, wherein: and the granulating mode is water-cooling granulating.
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| CN111484678B (en) * | 2020-06-29 | 2020-10-02 | 金发科技股份有限公司 | Electret master batch for melt-blown non-woven fabric for low-resistance mask and preparation method thereof |
| CN114907646A (en) * | 2022-06-28 | 2022-08-16 | 鹤山市东海塑料色母有限公司 | Non-woven fabric soft master batch and preparation method thereof |
| CN115678159A (en) * | 2022-10-13 | 2023-02-03 | 浙江广鸿新材料有限公司 | Preparation process of anti-skid soft master batch |
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| US20120123374A1 (en) * | 2010-11-09 | 2012-05-17 | Richeson Galen C | Meltblown Nonwoven Compositions and Methods for Making Them |
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| JP2001323119A (en) * | 2000-05-12 | 2001-11-20 | Japan Polychem Corp | Polypropylene resin composition for extrusion lamination |
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