CN114181445A - Weather-resistant master batch for polypropylene flat filament product and preparation method thereof - Google Patents

Weather-resistant master batch for polypropylene flat filament product and preparation method thereof Download PDF

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CN114181445A
CN114181445A CN202111597543.2A CN202111597543A CN114181445A CN 114181445 A CN114181445 A CN 114181445A CN 202111597543 A CN202111597543 A CN 202111597543A CN 114181445 A CN114181445 A CN 114181445A
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parts
antioxidant
weather
master batch
polypropylene
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谢胜利
张子俊
陆涛
张勇
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Suqian Lianhong New Materials Co ltd
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Suqian Lianhong New Materials Co ltd
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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
    • 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
    • D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
    • 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
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • 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
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • 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
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
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    • C08K5/3435—Piperidines
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    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
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Abstract

The invention belongs to the technical field of plastic woven products, and particularly relates to a weather-resistant master batch of a polypropylene flat filament product and a preparation method thereof; the weather-resistant master batch comprises the following components in parts by weight: 20-70 parts of polyolefin; 15-30 parts of a light stabilizer; 20-50 parts of light shielding powder; 2-8 parts of other auxiliary agents; the other auxiliary agents comprise an antioxidant, a heat stabilizer and a lubricant; the light shielding powder is any one or the combination of two of titanium dioxide, zinc oxide, cerium oxide or calcium carbonate; the polyolefin, the light stabilizer, the light shielding agent and other additives are melted and extruded according to a certain proportion for granulation to form the master batch with weather-resistant function; the weather-resistant master batch of the polypropylene flat filament product has good light aging resistance and provides good friction resistance.

Description

Weather-resistant master batch for polypropylene flat filament product and preparation method thereof
Technical Field
The invention belongs to the technical field of plastic woven products, and particularly relates to a weather-resistant master batch for a polypropylene flat filament product and a preparation method thereof.
Background
China is a big country for producing plastic products, and the capacity of the plastic products in China is 7603.2 ten thousand tons/year at present. . With the issue and update of plastic-limiting commands, the production of environment-friendly, degradable or durable plastic products has become a new direction for plastic product manufacturers.
In 2020, the capacity of the plastic woven products in China is 1793.5 ten thousand tons/year, which accounts for 23.59 percent of the capacity of the plastic products. At present, the productivity of the polypropylene plastic weaving industry is nearly saturated, the production cost is reduced, and the improvement of the product quality becomes the direction of attention and development of plastic weaving production enterprises. At present, granular materials and powder materials of PP are generally adopted in the polypropylene weaving industry as raw materials, and then filling master batches and various auxiliary agents are purchased from the market to be mixed and stirred to produce flat filaments and woven products. The addition of the weather-resistant auxiliary agent is a mainstream method for improving the outdoor service life and the use times of the flat-filament product, and the added auxiliary agent is mainly a light stabilizer 770.
The light stabilizer 770 is a hindered amine light stabilizer, is a high-efficiency light stabilizer, is one of the most widely applied light stabilizers in the existing light aging prevention process of polymer materials, often has a very significant promoting effect on the light stabilization of polymers, achieves the light stabilization purpose of polymers through various ways such as capturing free radicals generated in the processes of light oxidation and degradation of polymers, decomposing alkyl hydroperoxide, quenching excited state energy and the like, and is also a common and high-efficiency light stabilizer in the existing flat filament products.
With the development of the plastic weaving industry and the improvement of the requirements on products, the weather resistance requirements of people on the plastic weaving products cannot be met only by adding the light stabilizer 770, and a plurality of manufacturers can improve the weather resistance of the products by increasing the addition amount of the light stabilizer 770. But this brings with it some new problems: the production cost is increased; after the addition amount is increased, the light stabilizer 770 is precipitated and aggravated; the production process has serious water carrying phenomenon. And the current plastic woven product generally has a problem in the production process: the surface of the flat filament is scratched after being rubbed by equipment, so that the physical properties of the product are influenced.
Disclosure of Invention
The invention solves the technical problems in the prior art and provides a weather-resistant master batch for a polypropylene flat filament product and a preparation method thereof. The weather-resistant master batch of the polypropylene flat filament product has good light aging resistance and provides good friction resistance.
The technical scheme of the invention is as follows:
the weather-resistant master batch for the polypropylene flat filament product comprises the following components in parts by weight:
20-70 parts of polyolefin;
15-30 parts of a light stabilizer;
20-50 parts of light shielding powder;
2-8 parts of other auxiliary agents;
the other auxiliary agents comprise an antioxidant, a heat stabilizer and a lubricant;
the light shielding powder is any one or the combination of two of titanium dioxide, zinc oxide, cerium oxide or calcium carbonate.
Preferably, the weather-resistant master batch of the polypropylene flat filament product comprises the following components in parts by weight:
40-60 parts of polyolefin;
20-30 parts of a light stabilizer;
30-40 parts of light shielding powder;
6-8 parts of other auxiliary agents.
Preferably, the light-shielding powder has a particle diameter of 0.2 to 2 μm.
Preferably, the mass ratio of the antioxidant to the heat stabilizer to the lubricant in the other additives is 1:0.25-3: 0.25-2.
Preferably, the polyolefin is one or two of polyethylene resin or POE plastic, and the melt flow rate is between 1 and 10g/10 min.
Preferably, the light stabilizer is any one or two of HALS 770, HALS 3853, HALS 944 and HALS 3346.
Preferably, the antioxidant comprises primary antioxidant 1010, 1330 or 3114, secondary antioxidant 168 or 626; the mass ratio of the main antioxidant to the auxiliary antioxidant is 1: 1-3.
Preferably, the heat stabilizer is zinc stearate or calcium stearate.
Preferably, the lubricant is polyethylene wax or low molecular weight polypropylene (molecular weight 3000-4000).
The preparation method of the weather-resistant master batch of the polypropylene flat filament product comprises the following steps:
step a, adding the polyolefin and other additives into a high-speed mixer 1 according to a ratio, stirring to obtain a mixture A, adding the light stabilizer and the light shielding powder into a high-speed mixer 2, and stirring to obtain a mixture B;
and B, conveying the mixture A obtained in the step a to a screw through a main feeding port of a double-screw extruder by a screw conveyor for melting and mixing, conveying the mixture B obtained in the step a to the screw through a side feeding port of the double-screw extruder by the screw conveyor for melting and mixing, wherein the ratio of the main feeding speed to the side feeding speed is equal to the ratio of the mixture A to the mixture B, extruding the materials in the double-screw extruder through a compression section, a melting section and a homogenization section by a machine head of the extruder, conveying the materials to a granulator by a water cooling tank and an air dryer, and cutting the materials into particles to obtain the weather-resistant master batch of the polypropylene flat filament product.
Preferably, the length-diameter ratio of the screw in the step b is 1:25-35, the temperature of the compression section is 80-110 ℃, the temperature of the melting section is 170-200 ℃, and the temperature of the homogenization section is 190-200 ℃.
A preparation method of a polypropylene flat filament product comprises the following steps:
step 1, mixing the weather-resistant master batch of the polyolefin plastic woven product with polyolefin and a filling material to obtain a raw material mixture;
and 2, mixing the raw material mixture, spinning and weaving to obtain the polypropylene flat filament product.
Preferably, the proportion of the weather-resistant master batch of the polypropylene flat-filament product in the raw material mixture in the step 1 is 1-2.5 wt%. The filling material accounts for 2.5-5 wt%.
Preferably, the filler material is calcium carbonate.
Compared with the prior art, the invention has the following advantages:
the invention melts, extrudes and granulates polyethylene (or POE) powder, light stabilizer, light screening agent and other auxiliary agents according to a certain proportion to form the master batch with weather-proof function. Thus, when the woven fabric is processed, the following effects can be achieved: the light stabilizer with the same proportion is added to achieve better weather-proof effect and the same weather-proof effect, and the proportion needing to be added is less, so that the cost is reduced, and meanwhile, the water carrying phenomenon and the frictional wear during production are reduced.
Detailed Description
Example 1
The weather-resistant master batch of the embodiment comprises polyethylene resin (the melt flow rate is 1-10g/10min), an antioxidant 1010, an antioxidant 168, a light stabilizer 770, titanium dioxide, calcium stearate and polyethylene wax, and is prepared by mixing the following components in parts by weight: polyethylene resin: 40 parts, 1 part of antioxidant 1010, 2 parts of antioxidant 168, 20 parts of light stabilizer 770, calcium stearate: 2 parts, polyethylene wax: 1 part, titanium dioxide: 40 parts of the components. The particle size of the titanium dioxide is 0.2-2 μm.
Example 2
The weather-resistant master batch of the embodiment comprises polyethylene resin (the melt flow rate is 1-10g/10min), an antioxidant 1010, an antioxidant 168, a light stabilizer 770, titanium dioxide, calcium stearate and polyethylene wax, and is prepared by mixing the following components in parts by weight: polyethylene resin: 50 parts, 1.5 parts of antioxidant 1010, 2 parts of antioxidant 168, 25 parts of light stabilizer 770, calcium stearate: 2 parts, polyethylene wax: 1.5 parts, titanium dioxide: 30 parts of. The particle size of the titanium dioxide is 0.2-2 μm.
Example 3
The weather-resistant master batch of the embodiment comprises polyethylene resin (the melt flow rate is 1-10g/10min), an antioxidant 1010, an antioxidant 168, a light stabilizer 770, titanium dioxide, calcium stearate and polyethylene wax, and is prepared by mixing the following components in parts by weight: polyethylene resin: 60 parts, 2 parts of antioxidant 1010, 3 parts of antioxidant 168, 25 parts of light stabilizer 770, and calcium stearate: 2 parts, polyethylene wax: 1 part, titanium dioxide: 40 parts of the components. The particle size of the titanium dioxide is 0.2-2 μm.
Comparative example 1
The weather-resistant master batch of the comparative example is prepared by mixing polyethylene resin (the melt flow rate is 1-10g/10min), antioxidant 1010, antioxidant 168, light stabilizer 770 and calcium stearate, wherein the weight parts of the mixed components are as follows: polyethylene resin: 80 parts, 1 part of antioxidant 1010, 2 parts of antioxidant 168, 20 parts of light stabilizer 770, and calcium stearate: 2 parts, polyethylene wax: 1 part.
Comparative example 2
The weather-resistant master batch of the comparative example is prepared by mixing polyethylene resin (the melt flow rate is 1-10g/10min), antioxidant 1010, antioxidant 168, light stabilizer 770 and calcium stearate, and the weight parts of the mixed components are as follows: polyethylene resin: 80 parts, 1.5 parts of antioxidant 1010, 2 parts of antioxidant 168, 25 parts of light stabilizer 770, calcium stearate: 2 parts, polyethylene wax: 1.5 parts.
Comparative example 3
The weather-resistant master batch of the comparative example is prepared by mixing polypropylene resin (the melt flow rate is 1-10g/10min), antioxidant 1010, antioxidant 168, light stabilizer 770 and calcium stearate, wherein the weight parts of the mixed components are as follows: polypropylene resin: 80 parts, 1 part of antioxidant 1010, 2 parts of antioxidant 168, 20 parts of light stabilizer 770, and calcium stearate: 2 parts, polyethylene wax: 1 part.
The preparation method of the weather-resistant master batch in the examples 1 to 3 and the comparative examples 1 to 3 comprises the following steps:
a. according to the proportion, the polyolefin and other additives are added into a high-speed mixer 1 and stirred to obtain a mixture A, and the light stabilizer and the light shielding powder are added into a high-speed mixer 2 and stirred to obtain a mixture B;
b. and (B) conveying the mixture A obtained in the step (a) to a screw through a main feeding port of a double-screw extruder by a screw conveyor for melting and mixing, conveying the mixture B obtained in the step (a) to the screw through a side feeding port of the double-screw extruder by the screw conveyor for melting and mixing, wherein the ratio of the main feeding speed to the side feeding speed is equal to the ratio of the mixture A to the mixture B, the materials pass through a compression section, a melting section and a homogenizing section in the double-screw extruder and are then extruded by a machine head of the extruder, and the materials are conveyed to a granulator by a water cooling tank and an air dryer to be cut into particles, so that the weather-resistant master batch of the polypropylene flat filament product is prepared.
Wherein, the length-diameter ratio of the screw in the step b of the double-screw extruder is 1:25-35, the temperature of the compression section is 80-110 ℃, the temperature of the melting section is 170-200 ℃, and the temperature of the homogenization section is 190-200 ℃.
Aging test 1
The weatherable functional masterbatch obtained in examples 1 to 3 and comparative examples 1 to 3 was mixed with polypropylene (T30S) and calcium carbonate-filled masterbatch to obtain a raw material mixture. Wherein the proportion of the weather-resistant master batch in the raw material mixture is 1 wt%, the proportion of the calcium carbonate filling master batch in the raw material mixture is 3 wt%, and the polypropylene woven fabric is obtained by mixing and spinning the raw material mixture and weaving. Simultaneously, the weatherable functional master batch obtained in comparative examples 1 to 3 was mixed with a light-shielding agent, polypropylene (T30S) and calcium carbonate-filled master batch to obtain a raw material mixture. Wherein the proportion of the weather-resistant functional master batch in the raw material mixture is 1 wt%, the proportion of the calcium carbonate filling master batch in the raw material mixture is 3 wt%, the types of the light-shielding agent and the proportion of the calcium carbonate filling master batch in the raw material mixture are respectively the same as those in the examples 1-3, the raw material mixture is mixed and spun, and the woven cloth is obtained to obtain the polypropylene woven cloth which is named as the comparative examples 1-2, the comparative examples 2-2 and the comparative examples 3-2. The obtained polypropylene woven fabric sample is tested according to a II-type fluorescent ultraviolet lamp (UV-313), the test period is that irradiation exposure at 60 ℃ is 8 hours and non-irradiation condensation exposure at 50 ℃ is 4 hours alternately, and the test duration is 200 hours. The experimental data are shown in the following table:
TABLE 1 ageing tests for 200 hours for polypropylene woven fabrics made from weatherable masterbatches according to examples 1 to 3 and comparative examples 1 to 3
Figure BDA0003430815690000051
From the experimental data in the table above, it can be seen that: the test duration is 200h, and the tensile load of the sample of the embodiment after ultraviolet aging is 60% higher than the original tensile load; the tensile load retention after uv aging of the example samples was much greater than that of the comparative example samples.
The same as example 1, but the mass ratio of the antioxidant to the heat stabilizer to the lubricant in the other auxiliary agents is 1:0.25:0.25, and the antioxidant comprises the following components in parts by mass: 1 part of antioxidant 1010 and 2 parts of antioxidant 168. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
The same as example 1, but the mass ratio of the antioxidant to the heat stabilizer to the lubricant in the other additives is 1:3:2, and the mass fraction of the antioxidant is as follows: 1 part of antioxidant 1010 and 2 parts of antioxidant 168. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
Same as example 1, but in the antioxidant, by mass: 1 part of antioxidant 1010 and 1 part of antioxidant 168. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
Same as example 1, but in the antioxidant, by mass: 1 part of antioxidant 1010 and 3 parts of antioxidant 168. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
The same as example 1, except that cerium oxide was selected as the light-shielding powder. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
The same as example 1, but calcium carbonate was selected as the light-shielding powder. Carrying out an aging experiment 1, wherein the test duration is 200h, and the tensile load of the sample after ultraviolet aging is higher than 60% of the original tensile load; the tensile load retention of the samples after uv aging was much greater than that of the comparative samples.
Example 4
The weather-resistant master batch of the embodiment comprises polyethylene resin (the melt flow rate is 1-10g/10min), POE plastic, an antioxidant 1330, an antioxidant 168, a light stabilizer 770, zinc oxide, calcium stearate, zinc stearate, and polyethylene wax, and is prepared by mixing the following components in parts by weight: polyethylene resin: 20 parts of POE plastic: 20 parts, 1 part of antioxidant 1330, 2 parts of antioxidant 168, 20 parts of light stabilizer 770, and calcium stearate: 1 part, zinc stearate: 1 part, polyethylene wax: 1 part, zinc oxide: 40 parts of the components. The particle size of the zinc oxide is 0.2-2 μm.
Example 5
The weather-resistant master batch of the embodiment is prepared by mixing polyethylene resin (melt flow rate is 1-10g/10min), POE plastic, an antioxidant 1010, an antioxidant 626, a light stabilizer 770, zinc oxide, calcium stearate and polyethylene wax, wherein the mixture comprises the following components in parts by weight: polyethylene resin: 25 parts of POE plastic: 25 parts, 1.5 parts of antioxidant 1010, 2 parts of antioxidant 626, 25 parts of light stabilizer 770, and calcium stearate: 2 parts, polyethylene wax: 1.5 parts, zinc oxide: 30 parts of. The particle size of the zinc oxide is 0.2-2 μm.
Example 6
The weather-resistant master batch of the embodiment is prepared by mixing polyethylene resin (melt flow rate is 1-10g/10min), POE plastic, an antioxidant 1010, an antioxidant 168, a light stabilizer 770, titanium dioxide, calcium stearate and low-molecular-weight polypropylene, and the weight parts of the mixed components are as follows: polyethylene resin: 30 parts of POE plastic: 30 parts, 2 parts of antioxidant 1010, 3 parts of antioxidant 168, 25 parts of light stabilizer 770, and calcium stearate: 2 parts, low molecular weight polypropylene: 1 part, titanium dioxide: 40 parts of the components. The particle size of the titanium dioxide is 0.2-2 μm.
Comparative example 4
The weather-resistant master batch of the comparative example is prepared by mixing polyethylene resin (the melt flow rate is 1-10g/10min), antioxidant 1330, antioxidant 168, light stabilizer 770, calcium stearate and zinc stearate, wherein the weight parts of the mixed components are as follows: polyethylene resin: 80 parts, 1330:1 part of antioxidant, 168:2 parts of antioxidant, 770:20 parts of light stabilizer, calcium stearate: 1 part, zinc stearate: 1 part, polyethylene wax: 1 part.
Comparative example 5
The weather-resistant master batch of the comparative example is prepared by mixing polyethylene resin (the melt flow rate is 1-10g/10min), antioxidant 1010, antioxidant 626, light stabilizer 770 and calcium stearate, and the weight parts of the mixed components are as follows: polyethylene resin: 80 parts, 1.5 parts of antioxidant 1010, 2 parts of antioxidant 626, 25 parts of light stabilizer 770, and the weight ratio of calcium stearate: 2 parts, polyethylene wax: 1.5 parts.
Comparative example 6
The weather-resistant master batch of the comparative example is prepared by mixing polypropylene resin (the melt flow rate is 1-10g/10min), antioxidant 1330, antioxidant 168, light stabilizer 770, calcium stearate and zinc stearate, wherein the weight parts of the mixed components are as follows: polypropylene resin: 80 parts, 1330:1 part of antioxidant, 168:2 parts of antioxidant, 770:20 parts of light stabilizer, calcium stearate: 1 part, zinc stearate: 1 part, low molecular weight polypropylene: 1 part.
The specific preparation method of examples 4 to 6 and comparative examples 4 to 6 comprises the following steps:
a. according to the proportion, the polyolefin and other additives are added into a high-speed mixer 1 and stirred to obtain a mixture A, and the light stabilizer and the light shielding powder are added into a high-speed mixer 2 and stirred to obtain a mixture B;
b. and (B) conveying the mixture A obtained in the step (a) to a screw through a main feeding port of a double-screw extruder by a screw conveyor for melting and mixing, conveying the mixture B obtained in the step (a) to the screw through a side feeding port of the double-screw extruder by the screw conveyor for melting and mixing, wherein the ratio of the main feeding speed to the side feeding speed is equal to the ratio of the mixture A to the mixture B, the materials pass through a compression section, a melting section and a homogenizing section in the double-screw extruder and are then extruded by a machine head of the extruder, and the materials are conveyed to a granulator by a water cooling tank and an air dryer to be cut into particles, so that the weather-resistant master batch of the polypropylene flat filament product is prepared.
Wherein, the length-diameter ratio of the screw in the step b of the double-screw extruder is 1:25-35, the temperature of the compression section is 80-110 ℃, the temperature of the melting section is 170-200 ℃, and the temperature of the homogenization section is 190-200 ℃.
Aging test 2
The weatherable functional masterbatch obtained in examples 4 to 6 and comparative examples 4 to 6 was mixed with polypropylene (T30S) and calcium carbonate-filled masterbatch to obtain a raw material mixture. Wherein the proportion of the weather-resistant functional master batch in the raw material mixture is 1.5 wt%, the proportion of the calcium carbonate filling master batch in the raw material mixture is 3 wt%, and the polypropylene woven fabric is obtained by mixing and spinning the raw material mixture and weaving. Simultaneously, the weatherable functional master batch obtained in comparative examples 1 to 3 was mixed with a light-shielding agent, polypropylene (T30S) and calcium carbonate-filled master batch to obtain a raw material mixture. Wherein the proportion of the weather-resistant functional master batch in the raw material mixture is 1.5 wt%, the proportion of the calcium carbonate filling master batch in the raw material mixture is 3 wt%, the kind of the light shielding agent and the proportion in the raw material mixture are respectively the same as those in the examples 4-6, the raw material mixture is mixed and spun, and the woven cloth is obtained to obtain the polypropylene woven cloth which is named as the comparative example 4-2, the comparative example 5-2 and the comparative example 6-2. The obtained polypropylene woven fabric sample is tested according to a II-type fluorescent ultraviolet lamp (UV-313), the test period is that irradiation exposure at 60 ℃ is 8 hours and non-irradiation condensation exposure at 50 ℃ is 4 hours alternately, and the test duration is 200 hours. The experimental data are shown in the following table:
TABLE 2 ageing tests for 200 hours for polypropylene woven fabrics made from weatherable masterbatches according to examples 4 to 6 and comparative examples 4 to 6
Figure BDA0003430815690000081
From the experimental data in the table above, it can be seen that: the test duration is 200h, and the tensile load of the sample of the embodiment after ultraviolet aging is higher than 70% of the original tensile load; the tensile load retention after uv aging of the example samples was much greater than that of the comparative example samples.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent substitutions or substitutions made on the above-mentioned embodiments are included in the scope of the present invention.

Claims (10)

1. The weather-resistant master batch for the polypropylene flat filament product is characterized by comprising the following components in parts by weight:
20-70 parts of polyolefin;
15-30 parts of a light stabilizer;
20-50 parts of light shielding powder;
2-8 parts of other auxiliary agents;
the other auxiliary agents comprise an antioxidant, a heat stabilizer and a lubricant;
the light shielding powder is any one or the combination of two of titanium dioxide, zinc oxide, cerium oxide or calcium carbonate.
2. The weather-resistant master batch for the polypropylene flat filament product according to claim 1, which comprises the following components in parts by weight:
40-60 parts of polyolefin;
20-30 parts of a light stabilizer;
30-40 parts of light shielding powder;
6-8 parts of other auxiliary agents.
3. The weatherable masterbatch for polypropylene flat yarn product of claim 1, wherein the mass ratio of the antioxidant, the heat stabilizer and the lubricant in the other additives is 1:0.25-3: 0.25-2.
4. The weatherable masterbatch for polypropylene flat filament product of claim 1, wherein said polyolefin is one or both of polyethylene resin and POE plastic, and the melt flow rate is 1-10g/10 min.
5. The weatherable masterbatch for polypropylene tape yarn of claim 1 wherein said light stabilizer is one or a combination of two of HALS 770, HALS 3853, HALS 944 and HALS 3346.
6. The weather-resistant master batch for the polypropylene flat filament product according to claim 1, wherein the antioxidant comprises a main antioxidant and an auxiliary antioxidant, and the mass ratio of the main antioxidant to the auxiliary antioxidant is 1: 1-3.
7. The weatherable masterbatch for polypropylene tape yarn of claim 1 wherein said heat stabilizer is zinc stearate or calcium stearate.
8. The weatherable masterbatch for polypropylene tape yarn of claim 1 wherein said lubricant is polyethylene wax or polypropylene.
9. The method of preparing a weatherable masterbatch for a polypropylene tape yarn product according to any one of claims 1 to 8, comprising the steps of:
step a, adding the polyolefin and other additives into a high-speed mixer 1 according to a ratio, stirring to obtain a mixture A, adding the light stabilizer and the light shielding powder into a high-speed mixer 2, and stirring to obtain a mixture B;
and B, conveying the mixture A obtained in the step a to a screw through a main feeding port of a double-screw extruder by a screw conveyor for melting and mixing, conveying the mixture B obtained in the step a to the screw through a side feeding port of the double-screw extruder by the screw conveyor for melting and mixing, wherein the ratio of the main feeding speed to the side feeding speed is equal to the ratio of the mixture A to the mixture B, extruding the materials in the double-screw extruder through a compression section, a melting section and a homogenization section by a machine head of the extruder, conveying the materials to a granulator by a water cooling tank and an air dryer, and cutting the materials into particles to obtain the weather-resistant master batch of the polypropylene flat filament product.
10. The preparation method of the polypropylene flat filament product is characterized by comprising the following steps:
step 1, mixing the weather-resistant master batch of the polyolefin plastic woven product of any one of claims 1 to 8 with polyolefin and a filling material to obtain a raw material mixture;
and 2, mixing the raw material mixture, spinning and weaving to obtain the polypropylene flat filament product.
CN202111597543.2A 2021-12-24 2021-12-24 Weather-resistant master batch for polypropylene flat filament product and preparation method thereof Pending CN114181445A (en)

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