CN115521538A - Ternary blending extrusion sheet - Google Patents

Ternary blending extrusion sheet Download PDF

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Publication number
CN115521538A
CN115521538A CN202211285268.5A CN202211285268A CN115521538A CN 115521538 A CN115521538 A CN 115521538A CN 202211285268 A CN202211285268 A CN 202211285268A CN 115521538 A CN115521538 A CN 115521538A
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Prior art keywords
blending
raw materials
sheet
extruded sheet
blending agent
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CN202211285268.5A
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Chinese (zh)
Inventor
冯春
史保利
陈健
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Anhui Tianjia New Material Technology Co ltd
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Anhui Tianjia New Material Technology Co ltd
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Priority to CN202211285268.5A priority Critical patent/CN115521538A/en
Publication of CN115521538A publication Critical patent/CN115521538A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/14—Gas barrier composition

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention provides a ternary blending extruded sheet, which belongs to the technical field of macromolecules, and comprises 95-99% of raw materials and 1-5% of blending agents in percentage by weight, wherein the sum of the percentages of all the components is 100%; the preparation method of the ternary blended extruded sheet comprises the following steps: weighing raw materials and blending agents, and putting the raw materials and the blending agents into a high-speed stirrer to be uniformly mixed to prepare a raw material mixture; heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture; pouring the fluid mixture into a double-screw extruder for extrusion granulation, and performing hot-press molding to obtain a sheet; compared with a pure raw material co-extruded sheet, the raw material and blending agent co-extruded sheet has alloy properties, the bending strength, the tensile strength and the impact strength of the sheet are obviously enhanced, the sheet has better support performance after being formed, and when the mass fraction of the blending agent is 3.5%, the comprehensive mechanical property of the formed sheet is optimal.

Description

Ternary blending extrusion sheet
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a ternary blending extrusion sheet.
Background
The ethylene-vinyl alcohol copolymer, the polypropylene and the polyamide are all high molecular materials, the compatilizer enables the materials to have high polarity and reactivity by introducing a strong-polarity reactive group, and is a high-molecular interface coupling agent, a compatilizer and a dispersion promoter, and is mainly used for halogen-free flame retardance, filling, glass fiber reinforcement, toughening, metal bonding, alloy compatibility and the like, and the compatibility of the composite material and the dispersibility of the filling can be greatly improved, so that the mechanical strength of the composite material is improved.
Therefore, it is necessary to develop a ternary blended extruded sheet.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a ternary blended extruded sheet to solve the problems mentioned in the background art. A ternary blending extruded sheet comprises, by weight, 95% -99% of raw materials and 1% -5% of blending agents, wherein the sum of the percentages of all the components is 100%.
Preferably, the raw materials comprise ethylene-vinyl alcohol copolymer, polypropylene and polyamide, wherein the proportions of the ethylene-vinyl alcohol copolymer, the polypropylene and the polyamide in parts by weight are as follows: 1:4:4.
preferably, the blending agent comprises maleic anhydride grafted polypropylene, glycidyl methacrylate grafted polypropylene and methyl methacrylate grafted polypropylene, wherein the proportions of the maleic anhydride grafted polypropylene, the glycidyl methacrylate grafted polypropylene and the methyl methacrylate grafted polypropylene in parts by weight are as follows: 1:1:1.5.
preferably, the ternary blended extruded sheet comprises 95% of raw materials and 5% of blending agent in weight fraction.
Preferably, the ternary blended extruded sheet comprises 96% of raw materials and 4% of blending agent in weight fraction.
Preferably, the ternary blended extruded sheet comprises 96.5% of raw materials and 3.5% of blending agents in parts by weight.
Preferably, the ternary blended extruded sheet comprises 97% of raw materials and 3% of blending agent in weight fraction.
Preferably, the ternary blended extruded sheet comprises 98% of raw materials and 2% of blending agent in parts by weight.
Preferably, the ternary blended extruded sheet comprises 99% of raw materials and 1% of blending agent in parts by weight.
A preparation method of a ternary blended extruded sheet comprises the following steps:
s101: weighing raw materials and blending agents, and putting the raw materials and the blending agents into a high-speed stirrer to be uniformly mixed to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: and pouring the fluid mixture into a double-screw extruder for extrusion granulation, and performing hot-press molding to obtain the sheet.
Compared with the prior art, the invention has the following beneficial effects:
compared with a pure raw material co-extruded sheet, the raw material and blending agent co-extruded sheet has alloy properties, the bending strength, the tensile strength and the impact strength of the sheet are obviously enhanced, the sheet has better support performance after being formed, and when the mass fraction of the blending agent is 3.5%, the comprehensive mechanical property of the formed sheet is optimal; the ternary blending extrusion sheet also has barrier property which is slightly lower than that of the ethylene-vinyl alcohol copolymer but much higher than that of polyamide, and because of the existence of polypropylene, the peel strength of the polypropylene layer is obviously higher than that of the pure ethylene-vinyl alcohol copolymer when the ternary blending extrusion sheet is subjected to multilayer co-extrusion with the polypropylene, and meanwhile, the forming effect of the pure ethylene-vinyl alcohol copolymer co-extrusion sheet is good when the sheet is subjected to heating plastic suction forming.
Drawings
FIG. 1 is a flow chart of the preparation of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the embodiment is as follows:
as shown in figure 1
The invention provides a ternary blending extrusion sheet, which comprises 95-99% of raw materials and 1-5% of blending agents in percentage by weight, wherein the sum of the percentages of all the components is 100%.
In this example, the raw materials include ethylene-vinyl alcohol copolymer, polypropylene, and polyamide, where the ethylene-vinyl alcohol copolymer, polypropylene, and polyamide are in the following proportions by weight: 1:4:4; the blending agent comprises maleic anhydride grafted polypropylene, glycidyl methacrylate grafted polypropylene and methyl methacrylate grafted polypropylene, wherein the maleic anhydride grafted polypropylene, the glycidyl methacrylate grafted polypropylene and the methyl methacrylate grafted polypropylene are in the following weight percentage: 1:1:1.5.
wherein: ethylene-vinyl alcohol copolymer, combine processability and barrier function of vinyl alcohol polymer of ethylene polymer, ethylene-vinyl alcohol copolymer not merely demonstrate the excellent processability, and also present the excellent blocking function to gas, smell, perfume, solvent, etc., because combine with ethylene and have heat stability, the multilayer container comprising barrier layer of ethylene-vinyl alcohol copolymer is fully reusable, it is these characteristics, enable the plastic container comprising barrier layer of ethylene-vinyl alcohol copolymer to replace many glass and metal containers in the aspect of food packaging;
polypropylene, which is a polymer formed by propylene through addition polymerization, is a white waxy material, is transparent and light in appearance, has a chemical formula of (C3H 6) n, a density of 0.89-0.91 g/cm < 3 >, is inflammable, has a melting point of 189 ℃, is softened at about 155 ℃, has a use temperature range of-30-140 ℃, can resist corrosion of acid, alkali, salt solution and various organic solvents below 80 ℃, and can be decomposed at high temperature and under the action of oxidation. The polypropylene is widely applied to the production of fiber products such as clothes, blankets and the like, medical instruments, automobiles, bicycles, parts, conveying pipelines, chemical containers and the like, and is also used for packaging foods and medicines;
the introduction of maleic anhydride grafted polypropylene and active reaction group anhydride can obviously improve the bonding force between polypropylene and glass fiber, talcum powder and wood powder, and obviously improve the mechanical properties of the material such as tensile strength, bending strength, impact strength and the like; the maleic anhydride grafting compatilizer leads the material to have high polarity and reactivity by introducing strong polar reactive groups, and is a polymer interface coupling agent, a compatilizer and a dispersion promoter. The halogen-free flame retardant glass fiber reinforced plastic is mainly used for halogen-free flame retardant, filling, glass fiber reinforcement, toughening, metal bonding, alloy compatibility and the like, and can greatly improve the compatibility of the composite material and the dispersibility of the filler, thereby improving the mechanical strength of the composite material.
Example 1:
the preparation method of the ternary blending extruded sheet comprises the following steps:
s101: weighing 95 parts of raw materials and 5 parts of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
The mechanical properties of the sheet measured by the testing machine are as follows: the bending strength is 68MPa, the tensile strength is 37MPa, and the impact strength is 10KJ/m 2 。
Example 2:
the preparation method of the ternary blending extruded sheet comprises the following steps:
s101: weighing 96 parts of raw materials and 4 parts of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: and pouring the fluid mixture into a double-screw extruder for extrusion granulation, and performing hot-press molding to obtain the sheet.
The mechanical properties of the sheet measured by the testing machine are as follows: the bending strength is 77Mpa, the tensile strength is 42Mpa, and the impact strength is 13KJ/m 2 。
Example 3:
the preparation method of the ternary blending extruded sheet comprises the following steps:
s101: weighing 96.5 parts of raw materials and 3.5 parts of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to obtain a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
The mechanical properties of the sheet measured by the testing machine are as follows: the bending strength is 80Mpa, the tensile strength is 48Mpa, and the impact strength is 15KJ/m 2 。
Example 4:
the preparation method of the ternary blended extruded sheet comprises the following steps:
s101: weighing 97 parts of raw materials and 3 parts of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
The mechanical properties of the sheet measured by a testing machine are as follows: the bending strength is 75Mpa, the tensile strength is 51Mpa, and the impact strength is 12KJ/m 2 。
Example 5:
the preparation method of the ternary blending extruded sheet comprises the following steps:
s101: weighing 98 parts of raw materials and 2 parts of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
The mechanical properties of the sheet measured by a testing machine are as follows: bending strength of 66MPa and tensile strengthThe degree is 46Mpa, and the impact strength is 8KJ/m 2 。
Example 6:
the preparation method of the ternary blending extruded sheet comprises the following steps:
s101: weighing 99 parts of raw materials and 1 part of blending agent, and uniformly mixing the raw materials and the blending agent in a high-speed stirrer to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
The mechanical properties of the sheet measured by the testing machine are as follows: bending strength of 55MPa, tensile strength of 40MPa, and impact strength of 6KJ/m 2 。
The experimental results of the tester are shown in the following table:
flexural strength (Mpa) Tensile strength (Mpa) Impact Strength (KJ/m) 2 ）
Mass fraction of blending agent
1% 55 40 6
2% 66 46 8
3% 75 51 12
3.5% 80 48 15
4% 77 42 13
5% 68 37 10
As can be seen from the table above, when the mass fraction of the blending agent is 3.5%, the comprehensive mechanical property of the formed sheet is optimal.
Compared with a pure raw material co-extrusion sheet material, the raw material and co-blending agent co-extrusion sheet material has alloy performance, the bending strength, the tensile strength and the impact strength of the sheet material are obviously enhanced, and the sheet material has better supporting performance after being formed;
the ternary blending extrusion sheet also has barrier property which is slightly lower than that of the ethylene-vinyl alcohol copolymer but much higher than that of polyamide, and because of the existence of polypropylene, the peel strength of the polypropylene layer is obviously higher than that of the pure ethylene-vinyl alcohol copolymer when the ternary blending extrusion sheet is subjected to multilayer co-extrusion with the polypropylene, and meanwhile, the forming effect of the pure ethylene-vinyl alcohol copolymer co-extrusion sheet is good when the sheet is subjected to heating plastic suction forming.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims (10)

1. A ternary blended extruded sheet characterized by: the blended material comprises, by weight, 95% -99% of raw materials and 1% -5% of blending agents, wherein the sum of the percentages of all the components is 100%.
2. The ternary blended extruded sheet of claim 1, wherein: the raw materials comprise ethylene-vinyl alcohol copolymer, polypropylene and polyamide, wherein the ethylene-vinyl alcohol copolymer, the polypropylene and the polyamide are in the following weight percentage ratio: 1:4:4.
3. the ternary blended extruded sheet of claim 1, wherein: the blending agent comprises maleic anhydride grafted polypropylene, glycidyl methacrylate grafted polypropylene and methyl methacrylate grafted polypropylene, wherein the maleic anhydride grafted polypropylene, the glycidyl methacrylate grafted polypropylene and the methyl methacrylate grafted polypropylene are in the following weight percentage: 1:1:1.5.
4. the ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 95% of raw materials and 5% of blending agent in percentage by weight.
5. The ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 96 percent of raw materials and 4 percent of blending agent in percentage by weight.
6. The ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 96.5 percent of raw materials and 3.5 percent of blending agent in percentage by weight.
7. The ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 97 percent of raw material and 3 percent of blending agent in percentage by weight.
8. The ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 98% of raw materials and 2% of blending agent in percentage by weight.
9. The ternary blended extruded sheet of claim 1, wherein: the blending agent comprises 99% of raw materials and 1% of blending agent in percentage by weight.
10. A preparation method of a ternary blending extrusion sheet is characterized by comprising the following steps: the preparation method of the ternary blended extruded sheet comprises the following steps:
s101: weighing raw materials and blending agents, and putting the raw materials and the blending agents into a high-speed stirrer to be uniformly mixed to prepare a raw material mixture;
s102: heating the raw material mixture to 150-180 ℃, and keeping the temperature for 1-1.5 h to obtain a fluid mixture;
s103: pouring the fluid mixture into a double-screw extruder to extrude and granulate, and obtaining the sheet material through hot-press molding.
CN202211285268.5A 2022-10-20 2022-10-20 Ternary blending extrusion sheet Pending CN115521538A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990024631A (en) * 1997-09-04 1999-04-06 윤덕용 Polymer composition comprising a blend of ethylene-vinyl alcohol copolymer and nylon, and method for producing a packaging film using the same
CN111718578A (en) * 2020-06-30 2020-09-29 重庆科聚孚工程塑料有限责任公司 Polyamide 6 composite material for ethanol gasoline tank and preparation method thereof
CN114591622A (en) * 2022-03-30 2022-06-07 江苏金发科技新材料有限公司 Polyamide polypropylene alloy material and preparation method and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990024631A (en) * 1997-09-04 1999-04-06 윤덕용 Polymer composition comprising a blend of ethylene-vinyl alcohol copolymer and nylon, and method for producing a packaging film using the same
CN111718578A (en) * 2020-06-30 2020-09-29 重庆科聚孚工程塑料有限责任公司 Polyamide 6 composite material for ethanol gasoline tank and preparation method thereof
CN114591622A (en) * 2022-03-30 2022-06-07 江苏金发科技新材料有限公司 Polyamide polypropylene alloy material and preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
苏志才;承民联;: "PP/EVOH/PA6共混物的性能研究", 塑料科技, no. 10, pages 59 - 63 *

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