CN112538207A - Production process of weather-resistant plastic for woven bags - Google Patents
Production process of weather-resistant plastic for woven bags Download PDFInfo
- Publication number
- CN112538207A CN112538207A CN202011410379.5A CN202011410379A CN112538207A CN 112538207 A CN112538207 A CN 112538207A CN 202011410379 A CN202011410379 A CN 202011410379A CN 112538207 A CN112538207 A CN 112538207A
- Authority
- CN
- China
- Prior art keywords
- parts
- weather
- filler
- resistant plastic
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K3/32—Phosphorus-containing compounds
-
- 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
- C08K5/092—Polycarboxylic 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
- C08K5/17—Amines; Quaternary ammonium compounds
-
- 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
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- 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
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/324—Alkali metal phosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of plastic materials for woven bags, in particular to a production process of weather-resistant plastic for woven bags, which solves the problems that polypropylene materials for woven bags in the prior art are poor in weather resistance, extremely easy to age and degrade and naturally oxidize in the using process, poor in comprehensive performance of the woven bags, short in service life and the like, and comprises the following steps: dissolving p-phenylenediamine in ethyl acetate, and mixing with trisodium phosphate to obtain modified p-phenylenediamine; adding modified p-phenylenediamine into the mixed solution, stirring and drying to obtain an anti-aging agent; and mixing the polypropylene resin and the anti-aging agent together, adding the filler and the compatilizer, continuously mixing, and finally extruding and granulating by a double-screw extruder to obtain the weather-resistant plastic. The weather-resistant plastic prepared by the invention has excellent stability, oxidation resistance and aging resistance; meanwhile, the coating has good friction resistance, toughness and tensile strength.
Description
Technical Field
The invention relates to the technical field of plastic materials for woven bags, in particular to a production process of weather-resistant plastic for woven bags.
Background
The plastic woven bag is a product which is obtained by using various chemical plastics such as polypropylene and the like as main raw materials, extruding a film from the plastic raw materials, cutting and unidirectionally stretching the plastic raw materials into flat filaments and weaving the flat filaments by warps and wefts, and is generally called as a woven bag. The raw materials for producing woven bags abroad mainly comprise polyethylene, and the raw materials for producing woven bags domestically mainly comprise polypropylene. Polypropylene is a semitransparent and semi-crystalline thermoplastic plastic and has the characteristics of high strength, good insulation property, low water absorption, high hot-forming temperature, low density, high crystallinity and the like. However, polypropylene materials are susceptible to aging degradation, lose their original transparency, and have surfaces that are yellowed, discolored, and even completely pulverized. The natural oxidation has great damage to the woven polypropylene bag, which not only affects the appearance of the woven bag, but also gradually loses the original tensile strength, impact strength, bending strength and the like along with the continuous deepening of the oxidation, and gradually loses the use value.
The plastic woven bags are developed from the fields of industrial packaging, medical packaging, building material packaging, cosmetic packaging and the like by mainly taking agricultural food packaging as a main part, and the plastic woven bags occupy an important position in the field of packaging, have wider and wider application range and have wide application prospect. Therefore, for the domestic woven bag production industry, the polypropylene material for the woven bag is developed, the weather resistance of the polypropylene material is improved, the aging degradation and natural oxidation period of the polypropylene material are prolonged, and the polypropylene material has profound significance for the long-term development of the plastic woven bag industry. Based on the statement, the invention provides a production process of the weather-resistant plastic for the woven bag.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a polypropylene material for a woven bag is poor in weather resistance, extremely easy to age, degrade and naturally oxidize in the using process, poor in comprehensive performance of the woven bag, short in service life and the like, and provides a production process of weather-resistant plastic for the woven bag.
A production process of weather-resistant plastic for woven bags comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 45-65 ℃ according to the mass ratio of 1:2-3:1-1.8, cooling to 20-40 ℃, adding trisodium phosphate, and mixing for 20-30min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into the mixed solution at the temperature of 70-90 ℃ according to the mass ratio of 1:1.2-1.8, stirring for 1-2h, and drying to obtain an anti-aging agent;
s3, weighing 60-80 parts of polypropylene resin, 18-25 parts of filler, 3-5 parts of anti-aging agent and 2-4 parts of compatilizer;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 5-10min at the rotating speed of 1500-2000r/min, then adding the filler and the compatilizer, and continuously mixing for 4-8min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation to obtain the weather-resistant plastic for the woven bag.
Preferably, the mixed solution in the step S2 is prepared by mixing oxalic acid and isobutanol amine in a mass ratio of 1: 1.5-3.
Preferably, the raw materials in the step S3 are respectively in parts by weight: 65-75 parts of polypropylene resin, 20-24 parts of filler, 3.5-4.5 parts of anti-aging agent and 2.5-3.5 parts of compatilizer.
Preferably, the raw materials in the step S3 are respectively in parts by weight: 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer.
Preferably, the filler in step S3 is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid, treating for 1-3h, repeatedly cleaning with deionized water, and drying to obtain the required filler.
Preferably, the mass ratio of the isopropanol, the 2-methyl-2-nitro-1-propanol and the barbituric acid is 3-5:1: 1-1.8.
Preferably, the compatilizer in step S3 is erucamide.
Preferably, the mixing temperature of the polypropylene compound melt in the step S4 is 170-190 ℃.
Preferably, the temperature of the twin-screw extruder in the step S5 is 140-220 ℃, and the screw rotation speed is 150-180 r/min.
The production process of the weather-resistant plastic for the woven bag, provided by the invention, has the following beneficial effects:
1. the invention provides a production process of weather-resistant plastic for woven bags, which comprises the steps of preparing an anti-aging agent, mixing polypropylene resin and the anti-aging agent together, adding a filler and a compatilizer, continuously mixing, and finally extruding and granulating by a double-screw extruder to obtain the weather-resistant plastic, wherein the weather-resistant plastic has excellent stability, oxidation resistance and ageing resistance; meanwhile, the coating has good friction resistance, toughness and tensile strength.
2. Dissolving p-phenylenediamine in ethyl acetate, and mixing the solution with trisodium phosphate to prepare modified p-phenylenediamine; finally, processing the mixed solution prepared by compounding oxalic acid and isobutanol amine to prepare the anti-aging agent; compared with the traditional p-phenylenediamine anti-aging agent, the anti-aging agent has the advantages of obviously reduced volatility, obviously improved anti-aging performance, flame retardance and corrosion resistance, and can still keep stable hydrophobicity in acid-base corrosive media.
3. The invention soaks the glass fiber in the soakage liquid which is prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid, and the needed filler is obtained after the treatment, the filler has high dispersibility and compatibility, and can be used in polypropylene resin, so that the toughness, tensile strength and friction resistance of the material can be improved, and the dosage of the filler is greatly reduced compared with that of the common glass fiber on the premise of obtaining the same effect.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 45 ℃ according to the mass ratio of 1:2:1, cooling to 20 ℃, adding trisodium phosphate, and mixing for 20min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 70 ℃ according to the mass ratio of 1:1.2, stirring for 1h, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 1.5;
s3, weighing 60 parts of polypropylene resin, 18 parts of filler, 3 parts of anti-aging agent and 2 parts of compatilizer, wherein the filler is prepared by the following method: soaking glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 3:1:1, treating for 1h, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 5min at the rotating speed of 1500r/min, wherein the mixing temperature is 170 ℃, then adding the filler and the compatilizer, and continuously mixing for 4min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 140 ℃ and the screw rotating speed is 150r/min to obtain the weather-resistant plastic for the woven bag.
Example two
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 50 ℃ according to the mass ratio of 1:2.2:1.2, cooling to 25 ℃, adding trisodium phosphate, and mixing for 22min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 75 ℃ according to the mass ratio of 1:1.4, stirring for 1.2 hours, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 1.8;
s3, weighing 65 parts of polypropylene resin, 20 parts of filler, 3.5 parts of anti-aging agent and 2.5 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 3.5:1:1.2, treating for 1.5h, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 6min at the rotating speed of 1600r/min, wherein the mixing temperature is 175 ℃, then adding the filler and the compatilizer, and continuously mixing for 5min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 160 ℃ and the screw rotating speed is 160r/min to obtain the weather-resistant plastic for the woven bag.
EXAMPLE III
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 55 ℃ according to the mass ratio of 1:2.5:1.4, cooling to 30 ℃, adding trisodium phosphate, and mixing for 25min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 80 ℃ according to the mass ratio of 1:1.5, stirring for 1.5 hours, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 2.2;
s3, weighing 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 4:1:1.4, treating for 2 hours, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 8min at the rotation speed of 1750r/min, wherein the mixing temperature is 180 ℃, then adding the filler and the compatilizer, and continuously mixing for 6min to obtain a polypropylene compound melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 180 ℃ and the screw rotating speed is 165r/min to obtain the weather-resistant plastic for the woven bag.
Example four
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 60 ℃ according to the mass ratio of 1:2.8:1.6, cooling to 35 ℃, adding trisodium phosphate, and mixing for 28min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 85 ℃ according to the mass ratio of 1:1.6, stirring for 1.8 hours, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 2.5;
s3, weighing 75 parts of polypropylene resin, 22 parts of filler, 4.5 parts of anti-aging agent and 3.5 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 4.5:1:1.6, treating for 2.5h, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 9min at the rotating speed of 1900r/min, wherein the mixing temperature is 185 ℃, then adding the filler and the compatilizer, and continuously mixing for 7min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 200 ℃ and the screw rotating speed is 170r/min to obtain the weather-resistant plastic for the woven bag.
EXAMPLE five
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 65 ℃ according to the mass ratio of 1:3:1.8, then cooling to 40 ℃, adding trisodium phosphate and mixing for 30min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 90 ℃ according to the mass ratio of 1:1.8, stirring for 2 hours, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 3;
s3, weighing 80 parts of polypropylene resin, 25 parts of filler, 5 parts of anti-aging agent and 4 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 5:1:1.8, treating for 3 hours, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 10min at the rotating speed of 2000r/min, wherein the mixing temperature is 190 ℃, then adding the filler and the compatilizer, and continuously mixing for 8min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 220 ℃ and the screw rotating speed is 180r/min to obtain the weather-resistant plastic for the woven bag.
Comparative example 1
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, weighing 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 4:1:1.4, treating for 2 hours, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the anti-aging agent is p-phenylenediamine; wherein the compatilizer is erucamide;
s2, adding the polypropylene resin and the anti-aging agent weighed in the step S1 into a high-speed mixer together, mixing for 8min at the rotation speed of 1750r/min, wherein the mixing temperature is 180 ℃, then adding the filler and the compatilizer, and continuously mixing for 6min to obtain a polypropylene compound melt;
and S3, transferring the polypropylene compound melt obtained in the step S2 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 180 ℃ and the screw rotating speed is 165r/min to obtain the weather-resistant plastic for the woven bag.
Comparative example No. two
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 55 ℃ according to the mass ratio of 1:2.5:1.4, cooling to 30 ℃, adding trisodium phosphate, and mixing for 25min to obtain modified p-phenylenediamine;
s2, weighing 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer, wherein the filler is prepared by the following method: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid in a mass ratio of 4:1:1.4, treating for 2 hours, repeatedly washing with deionized water, and drying to obtain the required filler; wherein the anti-aging agent is modified p-phenylenediamine; wherein the compatilizer is erucamide;
s3, adding the polypropylene resin and the anti-aging agent weighed in the step S2 into a high-speed mixer together, mixing for 8min at the rotation speed of 1750r/min, wherein the mixing temperature is 180 ℃, then adding the filler and the compatilizer, and continuously mixing for 6min to obtain a polypropylene compound melt;
and S4, transferring the polypropylene compound melt obtained in the step S3 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 180 ℃ and the screw rotating speed is 165r/min to obtain the weather-resistant plastic for the woven bag.
Comparative example No. three
The invention provides a production process of weather-resistant plastic for woven bags, which comprises the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 55 ℃ according to the mass ratio of 1:2.5:1.4, cooling to 30 ℃, adding trisodium phosphate, and mixing for 25min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into a mixed solution at the temperature of 80 ℃ according to the mass ratio of 1:1.5, stirring for 1.5 hours, and drying to obtain the anti-aging agent, wherein the mixed solution is prepared by compounding oxalic acid and isobutyl alcohol amine according to the mass ratio of 1: 2.2;
s3, weighing 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer, wherein the filler is glass fiber; wherein the compatilizer is erucamide;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 8min at the rotation speed of 1750r/min, wherein the mixing temperature is 180 ℃, then adding the filler and the compatilizer, and continuously mixing for 6min to obtain a polypropylene compound melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation under the conditions that the temperature is 180 ℃ and the screw rotating speed is 165r/min to obtain the weather-resistant plastic for the woven bag.
The properties of the weather-resistant plastics for woven bags prepared in examples one to five and comparative examples one to three were respectively tested, and the following results were obtained:
table 1:
note: tensile strength after aging means: placing the prepared weather-resistant polypropylene sample under an ultraviolet lamp for radiation for 60 days, and measuring the tensile strength;
tensile strength after corrosion means: and (3) placing the prepared weather-resistant polypropylene sample in a 10% NaOH aqueous solution, boiling for 8h at 90 ℃, taking out, and placing for 24h in an environment with the temperature of 23 ℃ and the humidity of 50% to obtain the tensile strength.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A production process of weather-resistant plastic for woven bags is characterized by comprising the following steps:
s1, dissolving p-phenylenediamine in ethyl acetate at the temperature of 45-65 ℃ according to the mass ratio of 1:2-3:1-1.8, cooling to 20-40 ℃, adding trisodium phosphate, and mixing for 20-30min to obtain modified p-phenylenediamine;
s2, adding the modified p-phenylenediamine obtained in the step S1 into the mixed solution at the temperature of 70-90 ℃ according to the mass ratio of 1:1.2-1.8, stirring for 1-2h, and drying to obtain an anti-aging agent;
s3, weighing 60-80 parts of polypropylene resin, 18-25 parts of filler, 3-5 parts of anti-aging agent and 2-4 parts of compatilizer;
s4, adding the polypropylene resin and the anti-aging agent weighed in the step S3 into a high-speed mixer together, mixing for 5-10min at the rotating speed of 1500-2000r/min, then adding the filler and the compatilizer, and continuously mixing for 4-8min to obtain a polypropylene composite melt;
and S5, transferring the polypropylene compound melt obtained in the step S4 into a double-screw extruder, and performing melt extrusion granulation to obtain the weather-resistant plastic for the woven bag.
2. The production process of the weather-resistant plastic for the woven bag according to claim 1, wherein the mixed solution in the step S2 is prepared by compounding oxalic acid and isobutanol amine in a mass ratio of 1: 1.5-3.
3. The production process of the weather-resistant plastic for the woven bag according to claim 1, wherein the raw materials in the step S3 are respectively as follows in parts by weight: 65-75 parts of polypropylene resin, 20-24 parts of filler, 3.5-4.5 parts of anti-aging agent and 2.5-3.5 parts of compatilizer.
4. The production process of the weather resistant plastic for the woven bag according to claim 1 or 3, wherein the raw materials in the step S3 are respectively as follows in parts by weight: 70 parts of polypropylene resin, 22 parts of filler, 4 parts of anti-aging agent and 3 parts of compatilizer.
5. The process of claim 4, wherein the filler in the step S3 is prepared by the following steps: soaking the glass fiber in a soaking solution prepared by compounding isopropanol, 2-methyl-2-nitro-1-propanol and barbituric acid, treating for 1-3h, repeatedly cleaning with deionized water, and drying to obtain the required filler.
6. The process for producing the weather-resistant plastic for woven bags as claimed in claim 4, wherein the mass ratio of the isopropyl alcohol, the 2-methyl-2-nitro-1-propanol and the barbituric acid is 3-5:1: 1-1.8.
7. The process of claim 4, wherein the compatibilizer in step S3 is erucamide.
8. The process as claimed in claim 1, wherein the mixing temperature of the polypropylene composite melt in the step S4 is 170-190 ℃.
9. The process as claimed in claim 1, wherein the temperature of the twin-screw extruder in step S5 is 140-220 ℃, and the screw rotation speed is 150-180 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410379.5A CN112538207A (en) | 2020-12-03 | 2020-12-03 | Production process of weather-resistant plastic for woven bags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410379.5A CN112538207A (en) | 2020-12-03 | 2020-12-03 | Production process of weather-resistant plastic for woven bags |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112538207A true CN112538207A (en) | 2021-03-23 |
Family
ID=75016048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011410379.5A Pending CN112538207A (en) | 2020-12-03 | 2020-12-03 | Production process of weather-resistant plastic for woven bags |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112538207A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710788A (en) * | 2013-11-28 | 2014-04-09 | 安徽安远塑胶股份有限公司 | Anti-aging plastic woven-bag ribbon-like filament |
| CN106496767A (en) * | 2016-09-20 | 2017-03-15 | 吴忠市富林塑料包装制品有限公司 | A kind of antioxidation Polywoven Bag and preparation method thereof |
| CN107522932A (en) * | 2017-09-20 | 2017-12-29 | 盐城华和再生物资有限公司 | A kind of hydrophobic woven bag and its production technology |
| CN107574506A (en) * | 2017-10-17 | 2018-01-12 | 界首市鹏飞包装材料有限公司 | A kind of plastic woven-bag filament production technology |
| CN107722461A (en) * | 2017-11-13 | 2018-02-23 | 天津市旭辉恒远塑料包装股份有限公司 | A kind of long-acting anti-aging woven bag and preparation method thereof |
| CN108861013A (en) * | 2018-05-16 | 2018-11-23 | 枣阳市东航塑编彩印有限公司 | A kind of production technology of weathered plastics woven bag |
| CN111944257A (en) * | 2020-08-18 | 2020-11-17 | 天津市久大塑料制品有限公司 | Wear-resistant and impact-resistant plastic woven bag |
-
2020
- 2020-12-03 CN CN202011410379.5A patent/CN112538207A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710788A (en) * | 2013-11-28 | 2014-04-09 | 安徽安远塑胶股份有限公司 | Anti-aging plastic woven-bag ribbon-like filament |
| CN106496767A (en) * | 2016-09-20 | 2017-03-15 | 吴忠市富林塑料包装制品有限公司 | A kind of antioxidation Polywoven Bag and preparation method thereof |
| CN107522932A (en) * | 2017-09-20 | 2017-12-29 | 盐城华和再生物资有限公司 | A kind of hydrophobic woven bag and its production technology |
| CN107574506A (en) * | 2017-10-17 | 2018-01-12 | 界首市鹏飞包装材料有限公司 | A kind of plastic woven-bag filament production technology |
| CN107722461A (en) * | 2017-11-13 | 2018-02-23 | 天津市旭辉恒远塑料包装股份有限公司 | A kind of long-acting anti-aging woven bag and preparation method thereof |
| CN108861013A (en) * | 2018-05-16 | 2018-11-23 | 枣阳市东航塑编彩印有限公司 | A kind of production technology of weathered plastics woven bag |
| CN111944257A (en) * | 2020-08-18 | 2020-11-17 | 天津市久大塑料制品有限公司 | Wear-resistant and impact-resistant plastic woven bag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101143936B (en) | Preparation method for completely biodegraded high amylose starches base thin film | |
| US20200270422A1 (en) | Method for producing modified polyester resin reinforced with carbon fiber | |
| CN112080117B (en) | Environment-friendly high-heat-resistance flame-retardant modified plastic and processing technology thereof | |
| CN113462134B (en) | PET protective film and preparation method thereof | |
| CN106400198A (en) | Manufacturing method of polyester fiber with anti-aging function | |
| KR20160057184A (en) | Thermoplastic polymer film and manufacturing method thereof | |
| CN107556623B (en) | Injection molding retention resistant colored polypropylene composite material and preparation method thereof | |
| CN106317582A (en) | Polyethylene masterbatch with pumice powder as opening agent and preparation method thereof | |
| CN113402858B (en) | Nano modified PET packing belt | |
| CN112538207A (en) | Production process of weather-resistant plastic for woven bags | |
| CN109971137A (en) | A kind of plastic uptake antifog film and preparation method thereof | |
| CN106117694B (en) | A kind of attapulgite activeness and quietness resists long-term ultraviolet ageing floating material masterbatch | |
| CN112341696A (en) | Nano-modified high-barrier membrane and preparation method thereof | |
| CN107189114A (en) | A kind of preparation method of nano modification starch polyethylene alcohol complete-degradable plastic | |
| CN111499971A (en) | Preparation method of low-floating-fiber GFRPP composite material | |
| CN103724674B (en) | Transparent filling master batch of a kind of starch and preparation method thereof | |
| CN114773978B (en) | Solar composite front plate prepared from anti-dazzle nano coating and processing method thereof | |
| CN106117695A (en) | A kind of anti-long-term ultraviolet ageing high-density polyethylene material | |
| CN112297277A (en) | Preparation method of bamboo nanofiber/polyethylene multilayer composite gas barrier material | |
| CN106117697A (en) | A kind of attapulgite activeness and quietness resists long-term ultraviolet ageing floating material | |
| CN111995834A (en) | Modified particle based on PVA/starch and preparation method thereof | |
| CN111420565A (en) | Acid-resistant ion exchange membrane and preparation method thereof | |
| CN115286907B (en) | Degradable heat-resistant flame-retardant plastic master batch and preparation method thereof | |
| CN110294910A (en) | A kind of high temperature water-soluble polyvinyl alcohol master batch and preparation method thereof | |
| CN112280153B (en) | Traditional Chinese medicine granule packaging bag and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210323 |
|
| WD01 | Invention patent application deemed withdrawn after publication |