CN111645348A - Preparation method of air conditioner air duct with antibacterial and mildew-proof performance - Google Patents
Preparation method of air conditioner air duct with antibacterial and mildew-proof performance Download PDFInfo
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- CN111645348A CN111645348A CN202010526182.1A CN202010526182A CN111645348A CN 111645348 A CN111645348 A CN 111645348A CN 202010526182 A CN202010526182 A CN 202010526182A CN 111645348 A CN111645348 A CN 111645348A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00564—Details of ducts or cables of air ducts
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B2013/005—Degassing undesirable residual components, e.g. gases, unreacted monomers, from material to be moulded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0011—Biocides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0044—Stabilisers, e.g. against oxydation, light or heat
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of 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
- C08K2201/011—Nanostructured additives
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The invention provides a preparation method of an air conditioner air duct with antibacterial and mildew-proof performances, and relates to the field of vehicle-mounted air conditioners. The air-conditioning duct with the antibacterial and mildewproof performance is obtained by preparing and obtaining the composite antibacterial and mildewproof master batch, then blending and extruding the composite antibacterial and mildewproof master batch and the high-density polyethylene, cooling and then cutting into granules to obtain the antibacterial and mildewproof high-density polyethylene, and finally performing blow molding, cutting, assembling, inspecting and packaging on the antibacterial and mildewproof high-density polyethylene in sequence. The air conditioner air duct manufacturing material provided by the invention contains the composite antibacterial and mildewproof component, so that the air conditioner air duct has the antibacterial and mildewproof effects, and the problem that bacteria and mildews are easy to breed on the surface of an air conditioner due to a humid environment can be solved, the air outlet quality of the air conditioner air duct is improved, and the safety and health of drivers and passengers are guaranteed.
Description
Technical Field
The invention relates to the field of vehicle-mounted air conditioners, in particular to a preparation method of an air-conditioning air duct with antibacterial and mildew-proof properties.
Background
The problem of automobile air conditioner odor has been long-standing and has not been solved. The odor of the air conditioner is as follows: metal odor, plastic odor, musty odor, frozen odor, etc. The metal odor and the plastic odor can be controlled in the links of raw materials and processing technology, and the reason for the frozen odor is not found up to now; the biggest complaint of the odor of the air conditioner is a complaint of musty odor, which is caused by a problem of growth of bacteria and mold in the air conditioner of the car.
The bacteria belong to prokaryotes, do not have complete cell nucleuses, can obtain substances and energy from the nature, and can survive independently; the mould belongs to one kind of fungi, is a eukaryote, very easily breeds and breeds in warm humid environment to there is extremely strong reproductive capacity, and the vehicle air conditioner wind channel is in the environment of time cold hour heat for a long time, produces the comdenstion water easily, when humidity reaches certain degree, leads to breeding bacterium, mould in the air conditioner wind channel, and the smell that the metabolism of the bacterium of growing and mould produced is exactly the main source of air conditioner stink.
The automobile air conditioner air duct material is mainly high-density polyethylene (HDPE) generally, the high-density polyethylene material is a non-polar thermoplastic resin with high crystallinity, and the polymer has the advantages of no moisture absorption and good waterproof steam property, and is very suitable for pipeline parts. The automobile air conditioner is mainly produced through a blow molding process, but due to the non-hygroscopic characteristic, condensed water generated in the using process is gathered on the surface, an air duct is arranged inside an instrument board, the sunlight cannot be irradiated, a dark and humid environment provides an excellent environment for breeding and breeding bacteria and mold, and finally, the automobile has obvious mildewed odor in the air blown out from an air outlet of the air conditioner after being used for a period of time.
The air duct of the automobile air conditioner in the prior art generally does not consider antibiosis and mildew prevention, so under the condition of ensuring that the functions and mechanical properties of the original air duct are not changed, a specific antibiosis, mildew prevention and low-odor density polyethylene material is required to be developed and applied to the air duct of the air conditioner to solve the problem of peculiar smell.
Disclosure of Invention
The invention aims to provide a preparation method of an air conditioner air duct with antibacterial and mildew-proof properties. The problem of the air conditioner wind channel among the prior art because the mould of bacterium breed brings the flavor of moulding is solved.
Another object of the present invention is to avoid the production of chemical and burnt odors in air conditioning ducts.
Particularly, the invention provides a preparation method of an air-conditioning air duct with antibacterial and mildew-proof properties, which comprises the following steps:
preparing to obtain composite antibacterial and mildewproof master batch;
blending and extruding the composite antibacterial and mildewproof master batch and the high-density polyethylene, and granulating after cooling to obtain the antibacterial and mildewproof high-density polyethylene;
and carrying out blow molding, cutting, assembling, inspecting and packaging on the antibacterial mildew-proof high-density polyethylene in sequence to obtain the air-conditioning air duct with antibacterial mildew-proof performance.
Optionally, before the blow molding of the antibacterial and mildewproof high-density polyethylene, the method further comprises:
and baking the antibacterial and mildewproof high-density polyethylene for a first preset time.
Optionally, in the step of baking the antibacterial and mildewproof high-density polyethylene for a first preset time, the baking is performed at any temperature value within a range of 60-70 ℃, and the first preset time is any value within a range of 4-8 h.
Optionally, the weight percentages of the composite antibacterial and mildewproof master batch and the high-density polyethylene are as follows:
95-98 parts of high-density polyethylene;
2-5 parts of composite antibacterial and mildewproof master batch.
Optionally, the step of blow molding the antibacterial and mildewproof high-density polyethylene is performed at any temperature value in the range of 170-180 ℃.
Optionally, the composite antibacterial and mildewproof master batch comprises the following components in percentage by weight:
70-80 parts of polyolefin elastomer (POE);
20-30 parts of a composite antibacterial mildew inhibitor;
2-5 parts of a coupling agent;
2-5 parts of a metal passivator;
2-5 parts of an antioxidant.
Optionally, the composite antibacterial mildew inhibitor is prepared by mixing an inorganic nano-silver slow-release antibacterial agent and a nano-zinc oxide mildew inhibitor.
Optionally, the preparation method of the composite antibacterial and mildewproof master batch comprises the following steps:
mixing the polyolefin elastomer, the composite antibacterial and mildewproof agent, the coupling agent, the metal passivator and the antioxidant according to a preset proportion to obtain a mixture;
after being uniformly mixed, the mixture is added into a high-speed mixer to be stirred for a second preset time;
and adding the stirred mixture into a double-screw extruder, and performing melt extrusion to prepare the composite antibacterial and mildewproof master batch under the processing environment with the preset temperature and the preset vacuum value.
Optionally, the second preset time is any value within a range of 9min to 11 min;
the preset temperature is any value within the range of 175-185 ℃;
the preset vacuum value is any value within the range of 0.04 MPa-0.06 MPa.
Optionally, the coupling agent is gamma-aminopropyltriethoxysilane (silane coupling agent KH-550);
the metal passivator is N, N' -bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
The antioxidant is formed by mixing hindered phenol antioxidant, pentaerythritol ester and phosphite ester antioxidant.
The air-conditioning duct with the antibacterial and mildewproof performance is obtained by preparing and obtaining the composite antibacterial and mildewproof master batch, then blending and extruding the composite antibacterial and mildewproof master batch and the high-density polyethylene, cooling and then cutting into granules to obtain the antibacterial and mildewproof high-density polyethylene, and finally performing blow molding, cutting, assembling, inspecting and packaging on the antibacterial and mildewproof high-density polyethylene in sequence. The air conditioner air duct manufacturing material provided by the invention contains the composite antibacterial and mildewproof component, so that the air conditioner air duct has the antibacterial and mildewproof effects, and the problem that bacteria and mildews are easy to breed on the surface of an air conditioner due to a humid environment can be solved, the air outlet quality of the air conditioner air duct is improved, and the safety and health of drivers and passengers are guaranteed.
Further, after the antibacterial and mildewproof high-density polyethylene is obtained, the antibacterial and mildewproof high-density polyethylene needs to be baked for a first preset time, the baking is carried out at any temperature value within the range of 60-70 ℃, and the first preset time is any value within the range of 4-8 h. The invention can remove the micromolecules in the antibacterial and mildewproof high-density polyethylene by baking the antibacterial and mildewproof high-density polyethylene, thereby preventing the air-conditioning duct after blow molding from having chemical taste and burnt taste.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic flow chart of a method for manufacturing an air conditioning duct with antibacterial and mildewproof properties according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for manufacturing an air conditioning duct having antibacterial and antifungal properties according to another embodiment of the present invention;
FIG. 3 is a comparison graph of the performance tests of the antibacterial and mildewproof high-density polyethylene and the common high-density polyethylene used for manufacturing the air-conditioning duct;
FIG. 4 is a test chart of the antibacterial performance of the antibacterial mildew-proof high-density polyethylene used for manufacturing the air-conditioning duct;
fig. 5 is a test chart of the mildew resistance of the antibacterial and mildew-proof high-density polyethylene used for manufacturing the air-conditioning duct.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Fig. 1 is a schematic flow chart of a method for manufacturing an air conditioning duct with antibacterial and mildewproof properties according to an embodiment of the invention. In one specific embodiment, as shown in fig. 1, the method for manufacturing an air conditioning duct with antibacterial and mildewproof properties may generally include the following steps:
s100, preparing to obtain the composite antibacterial and mildewproof master batch;
s200, blending and extruding the composite antibacterial and mildewproof master batch and the high-density polyethylene, and cutting into granules after cooling to obtain the antibacterial and mildewproof high-density polyethylene; here, the high density polyethylene may also be replaced with a polypropylene material;
and S300, sequentially carrying out blow molding, cutting, assembling, inspecting and packaging on the antibacterial and mildewproof high-density polyethylene to obtain the air-conditioning air duct with antibacterial and mildewproof performances.
The air conditioner air duct manufacturing material provided by the invention contains the composite antibacterial and mildewproof component, so that the air conditioner air duct has the antibacterial and mildewproof effects, and the problem that bacteria and mildews are easy to breed on the surface of an air conditioner due to a humid environment can be solved, the air outlet quality of the air conditioner air duct is improved, and the safety and health of drivers and passengers are guaranteed.
Further, the composite antibacterial and mildewproof master batch and the high-density polyethylene comprise the following components in percentage by weight:
95-98 parts of high-density polyethylene;
2-5 parts of composite antibacterial and mildewproof master batch.
Fig. 2 is a schematic flow chart of a method for manufacturing an air conditioning duct with antibacterial and mildewproof properties according to another embodiment of the invention. As shown in fig. 2, in another embodiment, before the blow molding of the antibacterial and antifungal high-density polyethylene, the method further comprises the following steps:
s210, baking the antibacterial and mildewproof high-density polyethylene for a first preset time.
Specifically, in step S210, the baking is performed at any temperature value in the range of 60 ℃ to 70 ℃, and the first preset time is any value in the range of 4h to 8 h. In a preferred embodiment, the baking temperature is 70 ℃ and the baking time is 4h, and in addition, the baking temperature and the baking time are selected according to actual needs.
The invention bakes the antibacterial and mildewproof high-density polyethylene, and adds a baking procedure to remove small molecules in the antibacterial and mildewproof high-density polyethylene, thereby avoiding the air-conditioning duct after blow molding from having chemical taste and burnt taste.
Further, in a preferred embodiment, the step of blow molding the antibacterial and antifungal high-density polyethylene is performed at any temperature value in the range of 170 ℃ to 180 ℃. In one embodiment, the antimicrobial and mildewproof high density polyethylene can be selected to be carried out at a temperature of 175 ℃. In addition, the highest processing temperature of equipment difference cannot exceed 200 ℃, so that the material is prevented from oxidative degradation during processing. In the prior art, the higher the temperature is, the better the high-density polyethylene is blow molded. The invention limits the temperature in the blow molding process, namely controls the temperature in a reasonable range, thereby not only ensuring the blow molding of the product, but also avoiding the generation of chemical flavor and burnt flavor due to the oxidation and degradation of the material caused by the processing of high-temperature material and the generation of small molecules.
Further, the composite antibacterial and mildewproof master batch comprises the following components in percentage by weight:
70-80 parts of polyolefin elastomer (POE);
20-30 parts of a composite antibacterial mildew inhibitor;
2-5 parts of a coupling agent;
2-5 parts of a metal passivator;
2-5 parts of an antioxidant.
In addition, the preparation method of the composite antibacterial and mildewproof master batch mainly comprises the following steps:
the method comprises the following steps: mixing the polyolefin elastomer, the composite antibacterial and mildewproof agent, the coupling agent, the metal passivator and the antioxidant according to a preset proportion to obtain a mixture; wherein, the composite antibacterial mildew preventive is prepared by mixing an inorganic nano silver slow-release antibacterial agent and a nano zinc oxide mildew preventive. In another embodiment, the composite antibacterial and mildewproof agent can also be other antibacterial and mildewproof agents with the same antibacterial and mildewproof effect and stable performance.
Step two: after being uniformly mixed, the mixture is added into a high-speed mixer to be stirred for a second preset time;
step three: and adding the stirred mixture into a double-screw extruder, and performing melt extrusion to prepare the composite antibacterial and mildewproof master batch under the processing environment with the preset temperature and the preset vacuum value.
Specifically, the second preset time is any value within the range of 9min to 11 min; the preset temperature is any value within the range of 175-185 ℃; the preset vacuum value is any value within the range of 0.04 MPa-0.06 MPa. In a preferred embodiment, the second predetermined time is 10min, the predetermined temperature is 180 ℃, and the predetermined vacuum value is 0.05 Mpa.
Further, polyolefin elastomers (POE) are thermoplastic elastomers in which ethylene and octene are polymerized in situ using a metallocene catalyst. The coupling agent is gamma-aminopropyl triethoxysilane (silane coupling agent KH-550) which is used for coupling organic polymers and inorganic fillers, so that the cohesiveness of the organic polymers and the inorganic fillers is enhanced, and the mechanical, water-resistant and anti-aging properties of the product are improved. The metal deactivator is N, N' -bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine, which is a stabilizer and a high-efficiency metal deactivator applied to organic copolymers. The antioxidant is prepared by mixing hindered phenol antioxidant, pentaerythritol ester and phosphite antioxidant, and specifically, the antioxidant comprises tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] and tri [2, 4-di-tert-butylphenyl ] phosphite.
Further, the main material sources for preparing the composite antibacterial and mildewproof master batch are as follows:
compound antibacterial mildew preventive: RHA-TZ, Shanghai Zhuo Georgi engineering and technology Co., Ltd
Polyolefin elastomer (POE): ENGAGE 8150, Dow chemical
Coupling agent: KH-550, Nanjing warp Tian latitude chemical Co., Ltd
Metal passivator: irganox MD1024, BASF Pasteur
Antioxidant: irganox1010, Irganox168, BASF
Fig. 3 is a comparison graph of the performance test of the antibacterial and mildewproof high-density polyethylene used for manufacturing the air-conditioning duct and the common high-density polyethylene, fig. 4 is a test graph of the antibacterial performance of the antibacterial and mildewproof high-density polyethylene used for manufacturing the air-conditioning duct, and fig. 5 is a test graph of the mildewproof performance of the antibacterial and mildewproof high-density polyethylene used for manufacturing the air-conditioning duct. As shown in fig. 3, 4 and 5, according to the content of the composite antibacterial and antifungal agent of 25%, adding the polyolefin elastomer, the coupling agent, the metal passivator and the antioxidant, mixing uniformly, adding the mixture into a high-speed mixer, mixing for 10min, adding the mixed components into a double-screw extruder, performing melt extrusion at the processing temperature of 180 ℃ under the condition of two-stage vacuumizing of 0.05MPa to prepare a composite antibacterial and antifungal master batch, then performing blend extrusion, cooling and grain cutting on the composite antibacterial and antifungal master batch with the content of 2.5% and high-density polyethylene (HDPE) to obtain a composite antibacterial and antifungal high-density polyethylene material, baking the modified material for 70 ℃ for 4 hours, and then testing the physical and mechanical properties of the antibacterial and antifungal high-density polyethylene material, wherein the antibacterial and antifungal high-density polyethylene material can maintain the original physical and mechanical properties and has high antifungal properties. By optimizing and improving the material formula design and the production process, the automobile air conditioner air duct part with antibacterial, mildewproof and low odor can be produced.
Compared with the prior art, the composite antibacterial mildew preventive is prepared by selecting the inorganic nano-silver slow-release antibacterial agent and the nano-zinc oxide mildew preventive, then preparing the composite antibacterial mildew preventive and POE/coupling agent/metal passivator/antioxidant into composite antibacterial mildew-proof master batches, and then mixing the master batches with the high-density polyethylene material to obtain the high-density polyethylene material with antibacterial and mildew-proof properties. The high-density polyethylene material has two functions of antibiosis and mildew resistance because of the use of the nano slow-release silver and nano zinc oxide antibiosis and mildew resistance composite auxiliary agent, and has longer antibiosis capability than the traditional organic antibacterial agent because of the use of the inorganic slow-release auxiliary agent. The invention greatly improves the dispersibility of the additive and the compatibility with HDPE material by preparing the master batch and then modifying the master batch and the base material (high density polyethylene), thereby ensuring the tensile property and the impact property of the high density polyethylene material. That is, the invention effectively controls the dispersibility of the new components and the compatibility with the substances in the modification process, thereby ensuring that all properties of the material are not reduced and further ensuring that the mechanical properties of the air-conditioning duct keep the original performance requirements.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A preparation method of an air conditioner air duct with antibacterial and mildew-proof performances is characterized by comprising the following steps:
preparing to obtain composite antibacterial and mildewproof master batch;
blending and extruding the composite antibacterial and mildewproof master batch and the high-density polyethylene, and granulating after cooling to obtain the antibacterial and mildewproof high-density polyethylene;
and carrying out blow molding, cutting, assembling, inspecting and packaging on the antibacterial mildew-proof high-density polyethylene in sequence to obtain the air-conditioning air duct with antibacterial mildew-proof performance.
2. The method according to claim 1, further comprising, before blow molding the antibacterial and antifungal high-density polyethylene:
and baking the antibacterial and mildewproof high-density polyethylene for a first preset time.
3. The production method according to claim 2,
and in the step of baking the antibacterial and mildewproof high-density polyethylene for a first preset time, baking the high-density polyethylene at any temperature value within the range of 60-70 ℃, wherein the first preset time is any value within the range of 4-8 h.
4. The preparation method of claim 1, wherein the weight percentages of the composite antibacterial and mildewproof master batch and the high-density polyethylene are as follows:
95-98 parts of high-density polyethylene;
2-5 parts of composite antibacterial and mildewproof master batch.
5. The production method according to claim 1,
the step of blow molding the antibacterial and mildewproof high-density polyethylene is carried out at any temperature value in the range of 170-180 ℃.
6. The preparation method of claim 1, wherein the composite antibacterial and mildewproof master batch comprises the following components in percentage by weight:
70-80 parts of polyolefin elastomer (POE);
20-30 parts of a composite antibacterial mildew inhibitor;
2-5 parts of a coupling agent;
2-5 parts of a metal passivator;
2-5 parts of an antioxidant.
7. The production method according to claim 6,
the composite antibacterial mildew preventive is prepared by mixing an inorganic nano silver slow-release antibacterial agent and a nano zinc oxide mildew preventive.
8. The preparation method of claim 6, wherein the preparation method of the composite antibacterial and mildewproof master batch comprises the following steps:
mixing the polyolefin elastomer, the composite antibacterial and mildewproof agent, the coupling agent, the metal passivator and the antioxidant according to a preset proportion to obtain a mixture;
after being uniformly mixed, the mixture is added into a high-speed mixer to be stirred for a second preset time;
and adding the stirred mixture into a double-screw extruder, and performing melt extrusion to prepare the composite antibacterial and mildewproof master batch under the processing environment with the preset temperature and the preset vacuum value.
9. The method according to claim 8,
the second preset time is any value within the range of 9 min-11 min;
the preset temperature is any value within the range of 175-185 ℃;
the preset vacuum value is any value within the range of 0.04 MPa-0.06 MPa.
10. The production method according to claim 6,
the coupling agent is gamma-aminopropyl triethoxysilane (silane coupling agent KH-550);
the metal passivator is N, N' -bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine.
The antioxidant is formed by mixing hindered phenol antioxidant, pentaerythritol ester and phosphite ester antioxidant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010526182.1A CN111645348A (en) | 2020-06-09 | 2020-06-09 | Preparation method of air conditioner air duct with antibacterial and mildew-proof performance |
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| CN202010526182.1A CN111645348A (en) | 2020-06-09 | 2020-06-09 | Preparation method of air conditioner air duct with antibacterial and mildew-proof performance |
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| CN202010526182.1A Pending CN111645348A (en) | 2020-06-09 | 2020-06-09 | Preparation method of air conditioner air duct with antibacterial and mildew-proof performance |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881193A (en) * | 2012-12-21 | 2014-06-25 | 青岛欣展塑胶有限公司 | Polyethylene antibacterial mildew-resistant master batch and preparation method thereof |
| CN109485994A (en) * | 2018-09-18 | 2019-03-19 | 青岛国恩科技股份有限公司 | A kind of antibacterial antimildew polyacrylic and preparation method thereof for outer drum for drum washing machine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881193A (en) * | 2012-12-21 | 2014-06-25 | 青岛欣展塑胶有限公司 | Polyethylene antibacterial mildew-resistant master batch and preparation method thereof |
| CN109485994A (en) * | 2018-09-18 | 2019-03-19 | 青岛国恩科技股份有限公司 | A kind of antibacterial antimildew polyacrylic and preparation method thereof for outer drum for drum washing machine |
Non-Patent Citations (1)
| Title |
|---|
| 黄伯云，韩雅芳，张增志: "《中国战略性新兴产业 新材料 环境工程材料》", 30 November 2018, 北京：中国铁道出版社 * |
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Application publication date: 20200911 |