CN112500698A - Nylon refrigerant pipeline for car and preparation process thereof - Google Patents
Nylon refrigerant pipeline for car and preparation process thereof Download PDFInfo
- Publication number
- CN112500698A CN112500698A CN202011395843.8A CN202011395843A CN112500698A CN 112500698 A CN112500698 A CN 112500698A CN 202011395843 A CN202011395843 A CN 202011395843A CN 112500698 A CN112500698 A CN 112500698A
- Authority
- CN
- China
- Prior art keywords
- nylon
- mold
- mixture
- refrigerant pipeline
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 87
- 239000004677 Nylon Substances 0.000 title claims abstract description 59
- 229920001778 nylon Polymers 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 58
- 239000004014 plasticizer Substances 0.000 claims abstract description 44
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 36
- 244000198134 Agave sisalana Species 0.000 claims abstract description 29
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 28
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 28
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 28
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003063 flame retardant Substances 0.000 claims abstract description 25
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 57
- 238000011282 treatment Methods 0.000 claims description 36
- 230000010355 oscillation Effects 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 238000001746 injection moulding Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 5
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 2
- 239000005060 rubber Substances 0.000 abstract description 7
- 239000007769 metal material Substances 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229920002647 polyamide Polymers 0.000 abstract description 3
- 238000004073 vulcanization Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012784 weak cation exchange Methods 0.000 description 1
Classifications
-
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a nylon refrigerant pipeline for a car and a preparation process thereof, and particularly relates to the technical field of car refrigerant pipelines, wherein the nylon refrigerant pipeline comprises polyamide resin and a plasticizer; the plasticizer comprises: glass fiber, sisal fiber, a flame retardant, nano kaolin, nano calcium carbonate, graphene and black master batch. The high-strength high-temperature-resistant polyamide composite material for the pipeline is adopted to replace the traditional rubber and metal materials, has good tensile strength, elongation at break, drawing force, pressure resistance, vacuum resistance and impact resistance, reduces the weight by more than 50 percent, greatly reduces the cost, designs a pipeline steam forming process, and replaces the vulcanization forming of the traditional rubber pipeline and the baking forming of a nylon pipeline; not only can improve the efficiency, but also greatly reduce the energy consumption by more than 20 percent, improve the production efficiency by 3 to 4 times and achieve the yield of 99.9 percent.
Description
Technical Field
The invention relates to the technical field of automobile refrigerant pipelines, in particular to a nylon refrigerant pipeline for a car and a preparation process thereof.
Background
In an automobile air conditioning system, a refrigerant pipe is an important connecting pipe and takes an important task of conveying refrigerants, because the air conditioning system consists of four parts (a compressor, a condenser, a throttler and an evaporator), a plurality of refrigerant pipe interfaces exist, the interfaces and the four parts are connected by a port structure, the refrigerants are important factors influencing the refrigeration effect of the air conditioning system, are expensive and harmful to human bodies, and the leakage at any refrigerant pipe interface greatly influences the refrigeration effect and the safety of an automobile, so the interface sealing performance of the automobile refrigerant pipe plays an important role in the aspects of the automobile air conditioning effect and the safety.
In the traditional technology, the refrigerant pipe is made of rubber or metal materials, and the material selection and design not only have large weight and high cost, but also cause the refrigerant pipe to be easily damaged and have short service life.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a nylon refrigerant pipeline for a car and a preparation process thereof.
In order to achieve the purpose, the invention provides the following technical scheme: a nylon coolant pipeline for cars comprises, by weight, 60.0-80.0% of polyamide resin, and the balance of plasticizer; the plasticizer comprises the following components in percentage by weight: 30.0 to 40.0 percent of glass fiber, 20.0 to 30.0 percent of sisal fiber, 10.0 to 20.0 percent of flame retardant, 1.0 to 2.0 percent of nano kaolin, 1.0 to 2.0 percent of nano calcium carbonate, 1.0 to 2.0 percent of graphene and the balance of black master batch;
further, the nylon refrigerant pipeline for the sedan comprises 80.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 40.0% of glass fiber, 30.0% of sisal fiber, 20.0% of flame retardant, 2.0% of nano kaolin, 2.0% of nano calcium carbonate, 2.0% of graphene and the balance of black master batch.
Further, the nylon refrigerant pipeline for the sedan comprises 60.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 30.0% of glass fiber, 20.0% of sisal fiber, 10.0% of flame retardant, 1.0% of nano kaolin, 1.0% of nano calcium carbonate, 1.0% of graphene and the balance of black master batch.
Further, the nylon refrigerant pipeline for the sedan comprises 70.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises, by weight, 45.0% of glass fibers, 25.0% of sisal fibers, 15.0% of a flame retardant, 1.5% of nano kaolin, 1.5% of nano calcium carbonate, 1.5% of graphene and the balance of black master batch.
Further, the flame retardant is compounded by decabromodiphenyl ether and antimony trioxide according to the weight ratio of 2: 1.
The invention also provides a preparation process of the nylon refrigerant pipeline for the car, which comprises the following specific preparation steps:
the method comprises the following steps: weighing glass fiber, sisal fiber, flame retardant, nano kaolin, nano calcium carbonate, graphene and black master batch in the polyamide resin and the plasticizer according to the weight percentage;
step two: uniformly mixing the nano kaolin, the nano calcium carbonate and the graphene in the step one, and then equally dividing into three parts: mixture a, mixture B and mixture C;
step three: adding the polyamide resin in the step one and the mixture A in the step two into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture D;
step four: adding the glass fiber, the sisal fiber, the flame retardant and the black master batch in the first step and the mixture B in the second step into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture E;
step five: adding the mixture C obtained in the step two and the mixture D obtained in the step three into the mixture E, then banburying, uniformly stirring for 50-60 min under the conditions of the rotating speed of 120-150 r/min and the temperature of 60-80 ℃, and simultaneously carrying out ultrasonic oscillation and irradiation treatment to obtain a mixture F;
step six: drying the mixture F prepared in the fifth step in a vacuum environment at 95-105 ℃ to enable the humidity of the mixture F to be less than 0.03%;
step seven: preheating a mold of an injection molding machine before closing the mold, wherein the preheating temperature is 80-90 ℃, the preheating time is 10min, after closing the mold, high-temperature steam with the temperature of 180-190 ℃ and the pressure of 0.2-0.3 MPa passes through an irregular water channel, the mold is instantly heated to 125-135 ℃, and closing the mold is completed;
step eight: injecting the mixture F into the mold closed in the seventh step by an injection molding machine, wherein the temperature of the mold is maintained at 125-150 ℃ in the injection process; after the injection molding process is finished, maintaining the pressure of the mold, wherein the pressure maintaining pressure is 50% -60% of the highest pressure when the mold cavity is filled with the plastic, and keeping the temperature for 10-20 min;
step nine: and (3) cooling, namely injecting cooling water into the mold water channel at a high speed by using a high-pressure water pump, blowing air with the temperature of 25-30 ℃ into the mold water channel after cooling is finished, blowing cold water in the mold water channel out of the mold, and then opening the mold to obtain the nylon refrigerant pipeline for the car.
Furthermore, before weighing the raw materials in the step one, vacuum drying treatment is carried out.
Further, in the third step, the fourth step and the fifth step, the ultrasonic oscillation frequency is 1.6MHz, the ultrasonic irradiation frequency is 50KHz, and the ultrasonic oscillation and the ultrasonic irradiation adopt alternate treatment and are alternately replaced every 5 min.
Further, in the cooling treatment in the ninth step, after normal temperature cooling water is injected for 5min, cold water with the temperature of 5-10 ℃ is injected until the mold is cooled to the room temperature.
The invention has the technical effects and advantages that:
1. the nylon refrigerant pipeline for the sedan, which is prepared by adopting the raw material formula, can effectively reduce the compressive strength, the elongation at break, the drawing force, the pressure resistance, the vacuum resistance and the shock resistance of the refrigerant pipeline for the sedan, adopts the polyamide composite material for the pipeline with high strength and high and low temperature resistance to replace the traditional rubber and metal materials, reduces the weight by more than 50 percent, greatly reduces the cost, has the characteristics of toughness, flexibility, strong binding force, wear resistance, oil resistance, water resistance, enzyme bacteria resistance, large water absorption and the like, has the advantages of no toxicity, light weight, excellent mechanical strength, wear resistance and better corrosion resistance, can effectively enhance the strength of the nylon refrigerant pipeline, is not easy to damage and has lighter weight; the nano kaolin, the nano calcium carbonate and the graphene in the plasticizer assist the polyamide resin, and modify the polyamide resin, so that the performance of the nylon refrigerant pipeline is effectively enhanced, and the toughness, the wear resistance and the corrosion resistance of the nylon refrigerant pipeline can be effectively enhanced by matching the sisal fibers and the glass fibers in the plasticizer;
2. in the process of preparing the nylon refrigerant pipeline for the sedan, when the preparation process in the fourth embodiment is the preferred scheme of the invention, the nano kaolin, the nano calcium carbonate and the graphene in the plasticizer are mixed and equally divided into three parts in the second step, one part is used for modifying the polyamide resin, the other part is used for modifying the glass fiber and the sisal fiber, and the last part is used for mixing and modifying the modified material again, so that the modification treatment effect on the raw materials can be effectively enhanced, the performances of the refrigerant pipeline for the sedan can be enhanced, the ultrasonic oscillation treatment is carried out in the third step, the fourth step and the fifth step, the contact effect among various raw materials can be effectively enhanced, the dispersion is more uniform, the structure of the refrigerant pipeline for the sedan is more stable, the performances are better, the ultrasonic irradiation treatment is carried out in the third step, the fourth step and the fifth step, the modification treatment effect among various raw materials can be effectively enhanced, so that the performance of the refrigerant pipeline for the car is more stable, and a steam forming process is adopted in the pipeline forming process to replace the vulcanization forming of the traditional rubber pipeline and the baking forming of a nylon pipeline; the energy consumption is reduced by more than 20%, the production efficiency is improved by 3-4 times, and the yield reaches 99.9%.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a nylon refrigerant pipeline for a car, which comprises 80.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 40.0% of glass fiber, 30.0% of sisal fiber, 20.0% of flame retardant, 2.0% of nano kaolin, 2.0% of nano calcium carbonate, 2.0% of graphene and the balance of black master batch;
the invention also provides a preparation process of the nylon refrigerant pipeline for the car, which comprises the following specific preparation steps:
the method comprises the following steps: weighing glass fiber, sisal fiber, flame retardant, nano kaolin, nano calcium carbonate, graphene and black master batch in the polyamide resin and the plasticizer according to the weight percentage;
step two: uniformly mixing the nano kaolin, the nano calcium carbonate and the graphene in the step one, and then equally dividing into three parts: mixture a, mixture B and mixture C;
step three: adding the polyamide resin in the step one and the mixture A in the step two into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture D;
step four: adding the glass fiber, the sisal fiber, the flame retardant and the black master batch in the first step and the mixture B in the second step into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture E;
step five: adding the mixture C obtained in the step two and the mixture D obtained in the step three into the mixture E, then banburying, uniformly stirring for 50-60 min under the conditions of the rotating speed of 120-150 r/min and the temperature of 60-80 ℃, and simultaneously carrying out ultrasonic oscillation and irradiation treatment to obtain a mixture F;
step six: drying the mixture F prepared in the fifth step in a vacuum environment at 95-105 ℃ to enable the humidity of the mixture F to be less than 0.03%;
step seven: preheating a mold of an injection molding machine before closing the mold, wherein the preheating temperature is 80-90 ℃, the preheating time is 10min, after closing the mold, high-temperature steam with the temperature of 180-190 ℃ and the pressure of 0.2-0.3 MPa passes through an irregular water channel, the mold is instantly heated to 125-135 ℃, and closing the mold is completed;
step eight: injecting the mixture F into the mold closed in the seventh step by an injection molding machine, wherein the temperature of the mold is maintained at 125-150 ℃ in the injection process; after the injection molding process is finished, maintaining the pressure of the mold, wherein the pressure maintaining pressure is 50% -60% of the highest pressure when the mold cavity is filled with the plastic, and keeping the temperature for 10-20 min;
step nine: and (3) cooling, namely injecting cooling water into the mold water channel at a high speed by using a high-pressure water pump, blowing air with the temperature of 25-30 ℃ into the mold water channel after cooling is finished, blowing cold water in the mold water channel out of the mold, and then opening the mold to obtain the nylon refrigerant pipeline for the car.
In the first step, vacuum drying treatment is carried out before weighing various raw materials.
In the third step, the fourth step and the fifth step, the ultrasonic oscillation frequency is 1.6MHz, the ultrasonic irradiation frequency is 50KHz, and the ultrasonic oscillation and the ultrasonic irradiation adopt alternate treatment and are alternately replaced every 5 min.
In the cooling treatment in the ninth step, normal-temperature cooling water is injected for 5min, and then cold water at the temperature of 5-10 ℃ is injected until the mold is cooled to the room temperature.
Example 2:
different from the embodiment 1, the nylon refrigerant pipeline for the sedan comprises 60.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 30.0% of glass fiber, 20.0% of sisal fiber, 10.0% of flame retardant, 1.0% of nano kaolin, 1.0% of nano calcium carbonate, 1.0% of graphene and the balance of black master batch.
Example 3:
different from the embodiment 1-2, the nylon refrigerant pipeline for the sedan comprises 70.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises, by weight, 45.0% of glass fibers, 25.0% of sisal fibers, 15.0% of a flame retardant, 1.5% of nano kaolin, 1.5% of nano calcium carbonate, 1.5% of graphene and the balance of black master batch.
The nylon refrigerant pipelines for the cars prepared in the above examples 1-3 and the refrigerant pipelines for the first car of the control group, the second car of the control group, the third car of the control group, the fourth car of the control group and the fifth car of the control group are respectively taken, the refrigerant pipelines for the first car of the control group are the refrigerant pipelines for the ordinary cars on the market, the refrigerant pipelines for the second car of the control group have no glass fiber or sisal fiber compared with the examples, the refrigerant pipelines for the third car of the control group have no nano kaolin compared with the examples, the refrigerant pipelines for the fourth car of the control group have no nano calcium carbonate compared with the examples, the refrigerant pipelines for the fifth car of the control group have no graphene compared with the examples, the nylon refrigerant pipelines for the cars and the refrigerant pipelines for the five cars of the control group prepared in the three examples are respectively tested in eight groups, 30 samples are randomly selected in each group, multiple tests were performed to obtain the following data, with the test results shown in table one:
table one:
as can be seen from Table I, when the nylon refrigerant pipeline for the car comprises the following raw materials in parts by weight: the polyamide resin comprises 70.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises 45.0 percent of glass fiber, 25.0 percent of sisal fiber, 15.0 percent of flame retardant, 1.5 percent of nano kaolin, 1.5 percent of nano calcium carbonate and 1.5 percent of graphene by weight percentage, and when the balance is black master batch, the compression strength, the elongation at break, the drawing force, the compression resistance, the vacuum resistance and the impact resistance of a refrigerant pipeline for a car can be effectively reduced, a polyamide composite material for a pipeline with high strength and high and low temperature resistance is adopted to replace the traditional rubber and metal materials, the weight is reduced by more than 50 percent, the cost is greatly reduced, the embodiment III is a preferred scheme in the invention, the polyamide resin is used as a main raw material, has the characteristics of toughness, flexibility, strong binding force, wear resistance, oil resistance, water resistance, enzyme resistance, large water absorption and the like, and has no toxicity, light weight, excellent mechanical strength, wear resistance and better corrosion resistance, the strength of the nylon refrigerant pipeline can be effectively enhanced, the nylon refrigerant pipeline is not easy to damage, and the weight is light; the plasticizer is used for assisting the polyamide resin and modifying the polyamide resin, so that the performance of the nylon refrigerant pipeline is effectively enhanced, and the glass fiber in the plasticizer can be used for effectively filling, enhancing and modifying the polyamide resin, so that the strength and the flame retardant property of the nylon refrigerant pipeline are effectively enhanced; the sisal fibers in the plasticizer are tough, wear-resistant, salt-alkali-resistant and corrosion-resistant, the toughness, wear-resistant and corrosion-resistant properties of a nylon refrigerant pipeline can be effectively enhanced by using the sisal fibers and the glass fibers in a matched manner, the nano kaolin in the plasticizer is easy to disperse, good in covering performance and high in whiteness, has good plasticity and high cohesiveness, excellent electrical insulation, strong ion adsorption and weak cation exchange, can improve the performances such as whiteness, smoothness, opacity, glossiness and the like of the nylon refrigerant pipeline, and the nano calcium carbonate and the active nano calcium carbonate in the plasticizer are oleophilic and hydrophobic in surface, good in compatibility with polyamide resin, and can effectively improve or adjust the rigidity, toughness, smoothness and bending strength of the nylon refrigerant pipeline; the processing performance is improved, the rheological property, the size stability and the heat resistance stability of the nylon refrigerant pipeline are improved, the filling, reinforcing and toughening effects are achieved, graphene in the plasticizer is one of materials with the highest known strength, meanwhile, the plasticizer has good toughness and can be bent, the strength and the toughness of the nylon refrigerant pipeline can be effectively enhanced, meanwhile, the nano kaolin, the nano calcium carbonate and the graphene can be used for modifying polyamide resin, glass fibers and sisal fibers, and various performances of the nylon refrigerant pipeline are further enhanced.
Example 4
In the preferred technical scheme, the invention provides a nylon refrigerant pipeline for a car, which comprises 70.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises, by weight, 45.0% of glass fibers, 25.0% of sisal fibers, 15.0% of a flame retardant, 1.5% of nano kaolin, 1.5% of nano calcium carbonate, 1.5% of graphene and the balance of black master batch.
The invention also provides a preparation process of the nylon refrigerant pipeline for the car, which comprises the following specific preparation steps:
the method comprises the following steps: weighing glass fiber, sisal fiber, flame retardant, nano kaolin, nano calcium carbonate, graphene and black master batch in the polyamide resin and the plasticizer according to the weight percentage;
step two: uniformly mixing the nano kaolin, the nano calcium carbonate and the graphene in the step one, and then equally dividing into three parts: mixture a, mixture B and mixture C;
step three: adding the polyamide resin in the step one and the mixture A in the step two into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture D;
step four: adding the glass fiber, the sisal fiber, the flame retardant and the black master batch in the first step and the mixture B in the second step into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture E;
step five: adding the mixture C obtained in the step two and the mixture D obtained in the step three into the mixture E, then banburying, uniformly stirring for 50-60 min under the conditions of the rotating speed of 120-150 r/min and the temperature of 60-80 ℃, and simultaneously carrying out ultrasonic oscillation and irradiation treatment to obtain a mixture F;
step six: drying the mixture F prepared in the fifth step in a vacuum environment at 95-105 ℃ to enable the humidity of the mixture F to be less than 0.03%;
step seven: preheating a mold of an injection molding machine before closing the mold, wherein the preheating temperature is 80-90 ℃, the preheating time is 10min, after closing the mold, high-temperature steam with the temperature of 180-190 ℃ and the pressure of 0.2-0.3 MPa passes through an irregular water channel, the mold is instantly heated to 125-135 ℃, and closing the mold is completed;
step eight: injecting the mixture F into the mold closed in the seventh step by an injection molding machine, wherein the temperature of the mold is maintained at 125-150 ℃ in the injection process; after the injection molding process is finished, maintaining the pressure of the mold, wherein the pressure maintaining pressure is 50% -60% of the highest pressure when the mold cavity is filled with the plastic, and keeping the temperature for 10-20 min;
step nine: and (3) cooling, namely injecting cooling water into the mold water channel at a high speed by using a high-pressure water pump, blowing air with the temperature of 25-30 ℃ into the mold water channel after cooling is finished, blowing cold water in the mold water channel out of the mold, and then opening the mold to obtain the nylon refrigerant pipeline for the car.
In the first step, vacuum drying treatment is carried out before weighing various raw materials.
In the third step, the fourth step and the fifth step, the ultrasonic oscillation frequency is 1.6MHz, the ultrasonic irradiation frequency is 50KHz, and the ultrasonic oscillation and the ultrasonic irradiation adopt alternate treatment and are alternately replaced every 5 min.
In the cooling treatment in the ninth step, normal-temperature cooling water is injected for 5min, and then cold water at the temperature of 5-10 ℃ is injected until the mold is cooled to the room temperature.
Example 5
Unlike example 4, the ultrasonic oscillation and the ultrasonic irradiation in step three, step four and step five employ the front and rear treatments.
Example 6
Unlike in all of examples 4-5, in the nine-step cooling treatment, cold water at 5-10 ℃ was directly injected until the mold was cooled to room temperature.
Respectively taking the nylon refrigerant pipeline for the cars prepared in the embodiments 4-6 and a refrigerant pipeline for a contrast group six cars, a refrigerant pipeline for a contrast group seven cars, a refrigerant pipeline for a contrast group eight cars and a refrigerant pipeline for a contrast group nine cars to perform experiments, directly adding all raw materials and polyamide resin in a plasticizer into an internal mixer for internal mixing compared with the embodiment of the refrigerant pipeline for the contrast group six cars, performing no ultrasonic oscillation treatment in the step three, the step four and the step five compared with the embodiment of the refrigerant pipeline for the contrast group seven cars, performing no ultrasonic irradiation treatment in the step three, the step four and the step five compared with the embodiment of the refrigerant pipeline for the contrast group eight cars, and directly adding the mixture F into an extrusion device for baking and extrusion molding compared with the embodiment of the refrigerant pipeline for the contrast group nine cars; the nylon refrigerant pipelines for cars and the refrigerant pipelines for four control groups of cars prepared in the three examples are respectively tested in seven groups, 30 samples are randomly selected from each group, and multiple tests are carried out, so that the following data are obtained, and the test results are shown in the table two:
table two:
as can be seen from table two, in the process of preparing the refrigerant pipeline for the sedan, when the preparation process in the embodiment four is the preferred scheme of the present invention, in the step two, the nano kaolin, the nano calcium carbonate and the graphene in the plasticizer are mixed and equally divided into three parts, one part is used for modifying the polyamide resin, the other part is used for modifying the glass fiber and the sisal fiber, and the last part is used for mixing and modifying the modified material again, the modification treatment effect on the raw materials can be effectively enhanced, so that various performances of the refrigerant pipeline for the sedan can be enhanced, the ultrasonic oscillation treatment is performed in the step three, the step four and the step five, so that the contact effect among various raw materials can be effectively enhanced, the dispersion is more uniform, the structure of the refrigerant pipeline for the sedan is more stable, the performances are better, the ultrasonic irradiation treatment is performed in the step three, the step four and the step five, the modification treatment effect among various raw materials can be effectively enhanced, so that the performance of the refrigerant pipeline for the car is more stable, and a steam forming process is adopted in the pipeline forming process to replace the vulcanization forming of the traditional rubber pipeline and the baking forming of a nylon pipeline; the energy consumption is reduced by more than 20%, the production efficiency is improved by 3-4 times, and the yield reaches 99.9%.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A nylon refrigerant pipeline for a car is characterized in that: calculated according to the weight percentage, the polyamide resin comprises 60.0 to 80.0 percent of polyamide resin, and the balance of plasticizer; the plasticizer comprises the following components in percentage by weight: 30.0 to 40.0 percent of glass fiber, 20.0 to 30.0 percent of sisal fiber, 10.0 to 20.0 percent of flame retardant, 1.0 to 2.0 percent of nano kaolin, 1.0 to 2.0 percent of nano calcium carbonate, 1.0 to 2.0 percent of graphene and the balance of black master batch.
2. The nylon coolant pipeline for the sedan as claimed in claim 1, wherein: comprises 80.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 40.0% of glass fiber, 30.0% of sisal fiber, 20.0% of flame retardant, 2.0% of nano kaolin, 2.0% of nano calcium carbonate, 2.0% of graphene and the balance of black master batch.
3. The nylon coolant pipeline for the sedan as claimed in claim 1, wherein: comprises 60.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises the following components in percentage by weight: 30.0% of glass fiber, 20.0% of sisal fiber, 10.0% of flame retardant, 1.0% of nano kaolin, 1.0% of nano calcium carbonate, 1.0% of graphene and the balance of black master batch.
4. The nylon coolant pipeline for the sedan as claimed in claim 1, wherein: the polyamide resin comprises 70.0 percent of polyamide resin and the balance of plasticizer according to weight percentage; the plasticizer comprises, by weight, 45.0% of glass fibers, 25.0% of sisal fibers, 15.0% of a flame retardant, 1.5% of nano kaolin, 1.5% of nano calcium carbonate, 1.5% of graphene and the balance of black master batch.
5. The nylon coolant pipeline for the sedan as claimed in claim 1, wherein: the flame retardant is compounded by decabromodiphenyl oxide and antimony trioxide according to the weight ratio of 2: 1.
6. The preparation process of the nylon refrigerant pipeline for the sedan as claimed in any one of claims 1 to 5, wherein the nylon refrigerant pipeline comprises the following steps: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing glass fiber, sisal fiber, flame retardant, nano kaolin, nano calcium carbonate, graphene and black master batch in the polyamide resin and the plasticizer according to the weight percentage;
step two: uniformly mixing the nano kaolin, the nano calcium carbonate and the graphene in the step one, and then equally dividing into three parts: mixture a, mixture B and mixture C;
step three: adding the polyamide resin in the step one and the mixture A in the step two into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture D;
step four: adding the glass fiber, the sisal fiber, the flame retardant and the black master batch in the first step and the mixture B in the second step into an internal mixer for internal mixing, uniformly stirring for 20-30 min at the rotating speed of 40-70 r/min and the temperature of 40-60 ℃, and simultaneously performing ultrasonic oscillation and irradiation treatment to prepare a mixture E;
step five: adding the mixture C obtained in the step two and the mixture D obtained in the step three into the mixture E, then banburying, uniformly stirring for 50-60 min under the conditions of the rotating speed of 120-150 r/min and the temperature of 60-80 ℃, and simultaneously carrying out ultrasonic oscillation and irradiation treatment to obtain a mixture F;
step six: drying the mixture F prepared in the fifth step in a vacuum environment at 95-105 ℃ to enable the humidity of the mixture F to be less than 0.03%;
step seven: preheating a mold of an injection molding machine before closing the mold, wherein the preheating temperature is 80-90 ℃, the preheating time is 10min, after closing the mold, high-temperature steam with the temperature of 180-190 ℃ and the pressure of 0.2-0.3 MPa passes through an irregular water channel, the mold is instantly heated to 125-135 ℃, and closing the mold is completed;
step eight: injecting the mixture F into the mold closed in the seventh step by an injection molding machine, wherein the temperature of the mold is maintained at 125-150 ℃ in the injection process; after the injection molding process is finished, maintaining the pressure of the mold, wherein the pressure maintaining pressure is 50% -60% of the highest pressure when the mold cavity is filled with the plastic, and keeping the temperature for 10-20 min;
step nine: and (3) cooling, namely injecting cooling water into the mold water channel at a high speed by using a high-pressure water pump, blowing air with the temperature of 25-30 ℃ into the mold water channel after cooling is finished, blowing cold water in the mold water channel out of the mold, and then opening the mold to obtain the nylon refrigerant pipeline for the car.
7. The preparation process of the nylon refrigerant pipeline for the car as claimed in claim 6, wherein the nylon refrigerant pipeline comprises the following steps: in the first step, vacuum drying treatment is carried out before weighing various raw materials.
8. The preparation process of the nylon refrigerant pipeline for the car as claimed in claim 6, wherein the nylon refrigerant pipeline comprises the following steps: in the third step, the fourth step and the fifth step, the ultrasonic oscillation frequency is 1.6MHz, and the ultrasonic irradiation frequency is 50 KHz.
9. The preparation process of the nylon refrigerant pipeline for the car as claimed in claim 7, wherein the nylon refrigerant pipeline comprises the following steps: the ultrasonic oscillation and the ultrasonic irradiation adopt alternate treatment, and are alternately replaced every 5 min.
10. The preparation process of the nylon refrigerant pipeline for the car as claimed in claim 6, wherein the nylon refrigerant pipeline comprises the following steps: in the cooling treatment in the ninth step, normal-temperature cooling water is injected for 5min, and then cold water at the temperature of 5-10 ℃ is injected until the mold is cooled to the room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395843.8A CN112500698A (en) | 2020-12-03 | 2020-12-03 | Nylon refrigerant pipeline for car and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395843.8A CN112500698A (en) | 2020-12-03 | 2020-12-03 | Nylon refrigerant pipeline for car and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112500698A true CN112500698A (en) | 2021-03-16 |
Family
ID=74969532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011395843.8A Pending CN112500698A (en) | 2020-12-03 | 2020-12-03 | Nylon refrigerant pipeline for car and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112500698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174129A (en) * | 2021-03-30 | 2021-07-27 | 江苏江山红化纤有限责任公司 | Antibacterial and antiviral graphene polyamide composite material and preparation method thereof |
| CN115386220A (en) * | 2022-08-18 | 2022-11-25 | 绍兴市巴奇新型建材有限公司 | Injection molding material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111344354A (en) * | 2017-11-23 | 2020-06-26 | 巴斯夫欧洲公司 | Polyamide composition for producing weldable moulded bodies |
| WO2020169547A1 (en) * | 2019-02-20 | 2020-08-27 | Basf Se | Thermoplastic moulding compound |
| WO2020178342A1 (en) * | 2019-03-06 | 2020-09-10 | Basf Se | Polyamide molding composition for high-gloss applications |
-
2020
- 2020-12-03 CN CN202011395843.8A patent/CN112500698A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111344354A (en) * | 2017-11-23 | 2020-06-26 | 巴斯夫欧洲公司 | Polyamide composition for producing weldable moulded bodies |
| WO2020169547A1 (en) * | 2019-02-20 | 2020-08-27 | Basf Se | Thermoplastic moulding compound |
| WO2020178342A1 (en) * | 2019-03-06 | 2020-09-10 | Basf Se | Polyamide molding composition for high-gloss applications |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174129A (en) * | 2021-03-30 | 2021-07-27 | 江苏江山红化纤有限责任公司 | Antibacterial and antiviral graphene polyamide composite material and preparation method thereof |
| CN115386220A (en) * | 2022-08-18 | 2022-11-25 | 绍兴市巴奇新型建材有限公司 | Injection molding material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112500698A (en) | Nylon refrigerant pipeline for car and preparation process thereof | |
| KR20120001729A (en) | Crosslinkable rubber composition, uses thereof, rubber granules made of the same, and methods of preparation and injection forming methods of the rubber granules | |
| CN101608037A (en) | A kind of sponge rubber composition and preparation method thereof | |
| CN105315521A (en) | High-damping material for high-temperature co-curing with composite material and preparation method of high-damping material | |
| CN101649025A (en) | Preparation method of carboxylic styrene butadiene latex | |
| CN101602866B (en) | Cold-resistant rubber material suitable for preparing air sac and preparation method thereof | |
| CN109251375A (en) | Radial-ply tyre tread rubber composition containing isopthalic dihydrazide and preparation method thereof | |
| CN110330750B (en) | Low-compression permanent deformation carboxylic acid type acrylate rubber and preparation method thereof | |
| CN103435917A (en) | High-hardness color ethylene-propylene-diene monomer (EPDM) suitable for microwave vulcanizing and preparation method thereof | |
| CN109971047B (en) | Natural rubber-white carbon black composite material and preparation method and application thereof | |
| CN103980709A (en) | Composite material for water meter housing | |
| CN111745876A (en) | Preparation method of waterproof and anti-seepage latex gloves | |
| CN102417638A (en) | Chloroprene rubber composite for producing sponge sheath through microwave curing | |
| CN105199164A (en) | Rubber diaphragm for automobile vacuum booster | |
| CN107349918A (en) | A kind of preparation method of diatomite aids,filter | |
| CN113801431A (en) | High-toughness high-strength phenolic resin material and preparation method thereof | |
| CN101173063A (en) | Multifunctional rubber chemicals and method for producing the same | |
| CN113980462A (en) | Hydrolysis-resistant light corrugated pipe and processing technology thereof | |
| CN111704773A (en) | Synthetic latex gloves | |
| CN109135274B (en) | High-temperature-resistant glass fiber reinforced PA66 water chamber material and preparation method thereof | |
| CN112480658A (en) | Automobile part and nylon 11 glass fiber modified engineering plastic for building materials | |
| CN114573989B (en) | Special inner and outer rubber material for automobile R744 air conditioner rubber tube and manufacturing method thereof | |
| CN109722000A (en) | The polyurethane of imitative silica gel feel and the manufacture craft of polyether thermoplastic elastomer alloy | |
| CN110041587A (en) | A kind of automobile damping sealing strap | |
| CN110964248A (en) | Soft touch polypropylene composite material for automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210316 |