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CN-121976310-A - Polypropylene material for non-woven fabrics and preparation method thereof

CN121976310ACN 121976310 ACN121976310 ACN 121976310ACN-121976310-A

Abstract

The invention relates to the technical field of polypropylene non-woven fabrics, and provides a polypropylene material for non-woven fabrics and a preparation method thereof, wherein the polypropylene material comprises, by weight, 80-100 parts of polypropylene, 5-15 parts of a propylene-based elastomer, 0.5-1 part of an antioxidant, 0.5-1 part of a lubricant and 10-15 parts of a filler, and the filler comprises, by weight, 100 parts of calcium carbonate and 20-30 parts of 2-phenoxyethyl acrylate. Through the technical scheme, the problem of insufficient mechanical properties of the polypropylene material for the non-woven fabric in the related technology is solved.

Inventors

  • LI WEIWEI

Assignees

  • 石家庄怀斯贸易有限公司

Dates

Publication Date
20260505
Application Date
20260224

Claims (10)

  1. 1. The polypropylene material for the non-woven fabric is characterized by comprising, by weight, 80-100 parts of polypropylene, 5-15 parts of a propylene-based elastomer, 0.5-1 part of an antioxidant, 0.5-1 part of a lubricant and 10-15 parts of a filler; The filler comprises the following raw materials in parts by weight of 100 parts of calcium carbonate and 20-30 parts of 2-phenoxyethyl acrylate.
  2. 2. The polypropylene material for nonwoven fabric according to claim 1, wherein the method for producing the filler comprises the steps of: a1, adding calcium carbonate into the solvent I, uniformly dispersing, adding vinyl silane, mixing, filtering, and drying to obtain pretreated calcium carbonate; a2, after uniformly dispersing the pretreated calcium carbonate and the sodium dodecyl sulfate in the solvent II, sequentially adding the 2-phenoxyethyl acrylate and an initiator for reaction, and filtering, washing, drying and crushing to obtain the filler.
  3. 3. The polypropylene material for nonwoven fabric according to claim 2, wherein in the step A1, the mixing temperature is 50 to 60 ℃, and the mixing time is 2 to 3 hours.
  4. 4. The polypropylene material for nonwoven fabric according to claim 2, wherein in the step A2, the reaction temperature is 80 to 90 ℃, and the reaction time is 3 to 4 hours.
  5. 5. The polypropylene material for nonwoven fabric according to claim 1, wherein the polypropylene comprises one or more of homo-polypropylene, random co-polypropylene and block polypropylene.
  6. 6. The polypropylene material for nonwoven fabric according to claim 1, wherein the propylene-based elastomer is composed of a first propylene-based elastomer and a second propylene-based elastomer, and the first propylene-based elastomer and the second propylene-based elastomer are different in melt index and ethylene content.
  7. 7. The polypropylene material for nonwoven fabric according to claim 6, wherein the ethylene content of the first propylene-based elastomer is 11wt%, and the melt index under the test condition of 190 ℃ and 2.16kg is 3.7g/10min; the ethylene content of the second propylene-based elastomer was 15wt% and the melt index was 9.1g/10min at 190℃under 2.16kg of test conditions.
  8. 8. The polypropylene material for nonwoven fabrics according to claim 6, wherein the mass ratio of the first propylene-based elastomer to the second propylene-based elastomer is 5:6-8.
  9. 9. The polypropylene material for nonwoven fabric according to claim 1, wherein the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076 and antioxidant 168.
  10. 10. A method for preparing the polypropylene material for non-woven fabrics, which is used for preparing the polypropylene material for non-woven fabrics according to any one of claims 1 to 9, and is characterized by comprising the following steps: s1, adding the raw materials with the weight portions into a mixer to be uniformly mixed to obtain a premix; s2, carrying out melt extrusion and granulation on the premix to obtain the polypropylene material for the non-woven fabric.

Description

Polypropylene material for non-woven fabrics and preparation method thereof Technical Field The invention relates to the technical field of polypropylene non-woven fabrics, in particular to a polypropylene material for non-woven fabrics and a preparation method thereof. Background The non-woven fabric is used as a material which is directly reinforced by fiber net without spinning and weaving, and is widely applied to the fields of medical protection, sanitary articles, packaging, home furnishing, agriculture, building and the like by virtue of the characteristics of ventilation, flexibility, light weight, no toxicity, no stimulation, recycling and the like, and becomes an indispensable important material in modern industrial production and daily life. The polypropylene is used as a thermoplastic synthetic resin with excellent performance, has the advantages of low density, strong chemical corrosion resistance, good processing fluidity and the like, is the most widely used raw material in the production of the non-woven fabric at present, and the comprehensive performance of the non-woven fabric product is directly determined by the performance of the polypropylene. At present, the polypropylene material for the non-woven fabrics is mostly added with inorganic fillers to improve the mechanical property of the polypropylene material for the non-woven fabrics, however, the surface energy of the fillers is high, the situation of uneven dispersion is easy to occur, the stability of the spinning process is further affected, the problems of yarn breakage, yarn breakage and the like are caused, and the mechanical property of the non-woven fabrics is reduced, so that the development of the polypropylene material for the non-woven fabrics with excellent mechanical property has important significance. Disclosure of Invention The invention provides a polypropylene material for non-woven fabrics and a preparation method thereof, which solve the problem of insufficient mechanical properties of the polypropylene material for non-woven fabrics in the related technology. The technical scheme of the invention is as follows: The invention provides a polypropylene material for non-woven fabrics, which comprises the following raw materials, by weight, 80-100 parts of polypropylene, 5-15 parts of a propylene-based elastomer, 0.5-1 part of an antioxidant, 0.5-1 part of a lubricant and 10-15 parts of a filler; The filler comprises the following raw materials in parts by weight of 100 parts of calcium carbonate and 20-30 parts of 2-phenoxyethyl acrylate. As a further technical scheme, the preparation method of the filler comprises the following steps: a1, adding calcium carbonate into the solvent I, uniformly dispersing, adding vinyl silane, mixing, filtering, and drying to obtain pretreated calcium carbonate; a2, after uniformly dispersing the pretreated calcium carbonate and the sodium dodecyl sulfate in the solvent II, sequentially adding the 2-phenoxyethyl acrylate and an initiator for reaction, and filtering, washing, drying and crushing to obtain the filler. As a further technical scheme, in the step A1, the solvent I is composed of anhydrous ethanol and water in a mass ratio of 7:3. As a further technical scheme, in the step A1, the mixing temperature is 50-60 ℃, and the mixing time is 2-3 h. As a further technical scheme, the mass ratio of the calcium carbonate to the vinyl silane is 100:5-7. As a further technical scheme, the adding amount of the sodium dodecyl sulfate is 0.2% -0.5% of the mass of the 2-phenoxyethyl acrylate. As a further technical scheme, in the step A1, the vinyl silane is methacryloxypropyl trimethoxysilane. As a further technical scheme, in step A2, the solvent II is water. As a further technical scheme, in the step A2, the reaction temperature is 80-90 ℃, and the reaction time is 3-4 hours. As a further technical scheme, the mass ratio of the calcium carbonate to the 2-phenoxyethyl acrylate is 80:25-35, and can be 16:5, 8:3, 16:7 and preferably 8:3. As a further technical scheme, the polypropylene comprises one or more of homo-polypropylene, random co-polypropylene and block polypropylene. As a further technical solution, the propylene-based elastomer is composed of a first propylene-based elastomer and a second propylene-based elastomer, and the melt index and ethylene content of the first propylene-based elastomer and the second propylene-based elastomer are different. As a further technical scheme, the ethylene content of the first propylene-based elastomer is 11wt%, and the melt index is 3.7g/10min under the test condition of 190 ℃ and 2.16 kg; The ethylene content of the second propylene-based elastomer was 15wt% and the melt index was 9.1g/10min at 190℃under 2.16kg of test conditions. According to the invention, the mechanical properties of the polypropylene material for the non-woven fabric are improved by adding 11wt% of the first propylene-based elastomer with the ethylene content of 3.7g/10