CN115197568A - LFT-G antibacterial PA66 composite material and preparation method thereof - Google Patents
LFT-G antibacterial PA66 composite material and preparation method thereof Download PDFInfo
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- CN115197568A CN115197568A CN202210677265.XA CN202210677265A CN115197568A CN 115197568 A CN115197568 A CN 115197568A CN 202210677265 A CN202210677265 A CN 202210677265A CN 115197568 A CN115197568 A CN 115197568A
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- Polymers & Plastics (AREA)
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention discloses an LFT-G antibacterial PA66 composite material and a preparation method thereof, wherein the composite material comprises the following components in parts by weight: 40-70 parts of PA6, 10-30 parts of antibacterial master batch, 3-5 parts of toughening agent, 0.3-0.5 part of antioxidant, 0.3-0.5 part of lubricant and 20-50 parts of glass fiber. According to the invention, the antibacterial agent and the PA66 base material are blended, melted and granulated, so that the antibacterial agent is uniformly distributed in the plastic base material, the plastic has good antibacterial performance, and then the plastic base material is well wrapped by the glass fiber by adopting an infiltration coating process, so that the mechanical performance of the material is greatly enhanced, and the finally prepared composite modified plastic has excellent antibacterial performance and mechanical performance.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to an LFT-G antibacterial PA66 composite material and a preparation method thereof.
Background
Polyhexamethylene adipamide, commonly known as PA66, is a thermoplastic resin generally prepared by the polycondensation of adipic acid and hexamethylenediamine. High mechanical strength and hardness, high rigidity and use as engineering plastic. PA66 is widely used in the fields of automobiles, electromechanics, electronics, textiles, household appliances and the like. In order to ensure the safety in the using process, the conventional sterilization technology is generally used, the working procedure is required to be added, the production efficiency is reduced, the mechanical property of the material is influenced, and the application of the material is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an LFT-G antibacterial PA66 composite material which has good antibacterial performance and excellent mechanical performance.
The invention is realized by the following technical scheme:
an LFT-G antibacterial PA66 composite material comprises the following components in parts by weight:
PA66 40～70
10 to 30 portions of antibacterial master batch
3 to 5 portions of toughening agent
0.3 to 0.5 percent of antioxidant
0.3 to 0.5 of lubricant
20-50 parts of glass fiber.
Further, the antibacterial master batch is PA 66-antibacterial master batch, wherein the antibacterial agent is one or more of nano inorganic silver, copper and zinc, and preferably a nano inorganic zinc antibacterial agent is selected.
Further, the toughening agent is one or more of maleic anhydride grafted EPDM, SEBS-g-MAH and POE-g-MAH.
Further, the antioxidant is antioxidant 1010, antioxidant 168, antioxidant H164 and antioxidant 1098
One or more of (a).
Further, the lubricant is silicone master batch.
Furthermore, the glass fiber is continuous long glass fiber treated by silane coupling agent, and the diameter of the glass fiber is 7-12 mu m.
An LFT-G antibacterial PA66 composite material, comprising the following steps:
1) Preparation of antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then carrying out melt granulation by a double-screw extruder to obtain antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
S1, preparing a base material according to a ratio except for glass fibers, putting PA66 resin, an antibacterial master batch, an antioxidant, a lubricant and a toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix;
s2, adding the premix obtained in the step S1 into a feeding hopper of a double-screw extruder, and adding glass fibers at a side feeding port; enabling the glass fiber material to pass through the infiltration mould and be infiltrated and coated by the molten mixture in the infiltration mould, enabling the mixed material to continuously advance under the action of tension, carrying out water cooling, dehumidification and drying on the mixed material, enabling the mixed material to enter a tractor and a granulator, and carrying out granulation by the granulator to obtain a particle product, wherein the particle length is 5-12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the sixth zone are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the temperature of the pre-dispersion is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 15-35 kg/h.
The invention has the beneficial effects that:
the LFT-G antibacterial PA66 composite material prepared by the invention has good antibacterial performance, higher strength, higher impact performance and the like, is easy to form and process and has a simple manufacturing process.
Detailed Description
The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
An LFT-G antibacterial PA66 composite material comprises the following components in parts by weight:
PA66 40～70
10 to 30 portions of antibacterial master batch
3 to 5 portions of toughening agent
0.3 to 0.5 percent of antioxidant
0.3 to 0.5 percent of lubricant
20-50 parts of glass fiber.
The antibacterial master batch is PA 66-antibacterial master batch, wherein the antibacterial agent is one or more of nano inorganic silver, copper and zinc, and preferably a nano inorganic zinc antibacterial agent is selected.
The toughening agent is one or more of maleic anhydride grafted EPDM, SEBS-g-MAH and POE-g-MAH.
The antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant 1098 and antioxidant H164.
The lubricant is silicone master batch.
The glass fiber is continuous long glass fiber treated by silane coupling agent, and the diameter of the glass fiber is 7-12 mu m.
Example 1
1) Preparation of antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then carrying out melt granulation by a double-screw extruder, wherein the set temperature of the extruder is 260-300 ℃, so as to prepare antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
Weighing the base material according to the weight parts, putting 40kg of PA66 resin, 10kg of antibacterial master batch, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating the glass fiber from an infiltration die, infiltrating and wrapping the glass fiber by a molten mixture in the infiltration die, continuously advancing the mixed material under the action of tension, performing water cooling, dehumidification and drying, then feeding the mixed material into a tractor and a granulator, and granulating the mixed material by the granulator to obtain a granular product, wherein the granular product has the length of 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
Example 2
1) Preparing antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then performing melt granulation by a double-screw extruder at the set temperature of 260-300 ℃ to obtain antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
Weighing bottom materials according to the weight parts, putting 35kg of PA66 resin, 15kg of antibacterial master batch, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating the glass fiber from an infiltration die, infiltrating and wrapping the glass fiber by a molten mixture in the infiltration die, continuously advancing the mixed material under the action of tension, performing water cooling, dehumidification and drying, then feeding the mixed material into a tractor and a granulator, and granulating the mixed material by the granulator to obtain a granular product, wherein the granular product has the length of 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the sixth zone are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the temperature of the pre-dispersion is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
Example 3
1) Preparation of antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then carrying out melt granulation by a double-screw extruder, wherein the set temperature of the extruder is 260-300 ℃, so as to prepare antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
Weighing the base material according to the weight parts, putting 30kg of PA66 resin, 20kg of antibacterial master batch, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating glass fibers from an infiltration mold, infiltrating and wrapping the glass fibers by a molten mixture in the infiltration mold, continuously advancing the mixed materials under the action of tension, carrying out water cooling, dehumidification and drying on the mixed materials, then feeding the mixed materials into a tractor and a granulator, and granulating the mixed materials by the granulator to obtain a granular product, wherein the granular length is 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
Example 4
1) Preparation of antibacterial masterbatch
Mixing the antibacterial agent and the PA66 base material in a mixer for 15min, and then carrying out melt granulation by a double-screw extruder, wherein the set temperature of the extruder is 260-300 ℃, so as to prepare antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
Weighing the base material according to the weight parts, putting 25kg of PA66 resin, 25kg of antibacterial master batch, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating the glass fiber from an infiltration die, infiltrating and wrapping the glass fiber by a molten mixture in the infiltration die, continuously advancing the mixed material under the action of tension, performing water cooling, dehumidification and drying, then feeding the mixed material into a tractor and a granulator, and granulating the mixed material by the granulator to obtain a granular product, wherein the granular product has the length of 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
Example 5
1) Preparation of antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then performing melt granulation by a double-screw extruder at the set temperature of 260-300 ℃ to obtain antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
Weighing the base material according to the weight parts, putting 20kg of PA66 resin, 30kg of antibacterial master batch, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating glass fibers from an infiltration mold, infiltrating and wrapping the glass fibers by a molten mixture in the infiltration mold, continuously advancing the mixed materials under the action of tension, carrying out water cooling, dehumidification and drying on the mixed materials, then feeding the mixed materials into a tractor and a granulator, and granulating the mixed materials by the granulator to obtain a granular product, wherein the granular length is 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
Comparative example 1
Mixing the antibacterial agent and the PA66 resin in a mixer for 15min, and then carrying out melt granulation by a double-screw extruder, wherein the set temperature of the extruder is 260-300 ℃, so as to obtain the antibacterial master batch.
Comparative example 2
Weighing the base materials according to the weight parts, putting 50kg of PA66 resin, 0.5kg of antioxidant, 0.5kg of lubricant and 3kg of toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix; adding the premix into a feed hopper of a double-screw extruder, simultaneously penetrating glass fibers from an infiltration mold, infiltrating and wrapping the glass fibers by a molten mixture in the infiltration mold, continuously advancing the mixed materials under the action of tension, carrying out water cooling, dehumidification and drying on the mixed materials, then feeding the mixed materials into a tractor and a granulator, and granulating the mixed materials by the granulator to obtain a granular product, wherein the granular length is 12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 20kg/h.
The LFT-G antibacterial PA66 composite materials prepared in the examples 1-5 and the PA6 composite materials prepared in the comparative examples 1-2 are subjected to injection molding by an injection molding machine to form a standard pattern, and the standard pattern is compared according to national and international standards to carry out performance characterization.
Table 1 each of examples 1 to 5 and comparative examples 1 to 2 had test data on antibacterial properties and mechanical properties:
as shown in Table 1, the LFT-G antibacterial PA66 composite material prepared by the technical scheme of the invention has good antibacterial performance and excellent mechanical performance, and reaches the expected level.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. Modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (7)
1. The LFT-G antibacterial PA66 composite material is characterized by comprising the following components in parts by weight:
PA66 40～70
10 to 30 portions of antibacterial master batch
3 to 5 portions of toughening agent
0.3 to 0.5 percent of antioxidant
0.3 to 0.5 of lubricant
20-50 parts of glass fiber.
2. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the antibacterial master batch is PA 66-antibacterial master batch, the antibacterial agent is one or more of nano inorganic silver, copper and zinc, and preferably a nano inorganic zinc antibacterial agent is selected.
3. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the toughening agent is one or more of maleic anhydride grafted EPDM, SEBS-G-MAH and POE-G-MAH.
4. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the antioxidant is one or more of an antioxidant 1010, an antioxidant 168, an antioxidant H164 and an antioxidant 1098.
5. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the lubricant is silicone master batch.
6. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the glass fiber is a continuous long glass fiber with a diameter of 7-12um treated by a silane coupling agent.
7. The LFT-G antibacterial PA66 composite material according to claim 1, wherein the preparation method comprises the following steps:
1) Preparing antibacterial masterbatch
Mixing the antibacterial agent and PA66 resin in a mixer for 15min, and then performing melt granulation through a double-screw extruder to prepare antibacterial master batches;
2) Preparation of LFT-G antibacterial PA66 composite material
S1, preparing a base material according to a ratio except for glass fibers, putting PA66 resin, an antibacterial master batch, an antioxidant, a lubricant and a toughening agent into a mixer, uniformly mixing, heating to 75 ℃, and then preserving heat for 15 minutes to obtain a premix;
s2, adding the premix obtained in the step S1 into a feeding hopper of a double-screw extruder, and simultaneously adding glass fibers at a side feeding port; enabling the glass fiber material to pass through the infiltration mould and be infiltrated and coated by the molten mixture in the infiltration mould, enabling the mixed material to continuously advance under the action of tension, carrying out water cooling, dehumidification and drying on the mixed material, enabling the mixed material to enter a tractor and a granulator, and carrying out granulation by the granulator to obtain a particle product, wherein the particle length is 5-12mm; the double-screw extruder is divided into six zones from a feeding port to a machine head, a start valve, a transition pipe, a distributor, the machine head, a die lip and pre-dispersion, wherein the temperatures of the first zone to the six zones are 250-260 ℃, 260-265 ℃, 270-280 ℃, 280-285 ℃, 285-290 ℃, 295-300 ℃, the temperature of the start valve is 300 ℃, the temperature of the transition pipe is 310 ℃, the temperature of the distributor is 310 ℃, the temperature of the machine head is 310 ℃, the temperature of the die lip is 310 ℃, the pre-dispersion temperature is 170 ℃, the rotating speed of a screw is 320-350 r/min, and the feeding amount is 15-35 kg/h.
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| CN202210677265.XA CN115197568A (en) | 2022-06-16 | 2022-06-16 | LFT-G antibacterial PA66 composite material and preparation method thereof |
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| CN202210677265.XA CN115197568A (en) | 2022-06-16 | 2022-06-16 | LFT-G antibacterial PA66 composite material and preparation method thereof |
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