CN111154184A - Automobile skylight drain pipe and preparation process thereof - Google Patents

Automobile skylight drain pipe and preparation process thereof Download PDF

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Publication number
CN111154184A
CN111154184A CN202010061759.6A CN202010061759A CN111154184A CN 111154184 A CN111154184 A CN 111154184A CN 202010061759 A CN202010061759 A CN 202010061759A CN 111154184 A CN111154184 A CN 111154184A
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tpv
drain pipe
base material
parts
tpo
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余建
秦兰超
何峰
杨美军
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Dongguan Kaifeite Precision Manufacturing Co Ltd
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Dongguan Kaifeite Precision Manufacturing Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • 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
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • 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

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention discloses an automobile skylight drain pipe and a preparation process thereof, wherein the automobile skylight drain pipe comprises the following components in parts by weight: 150-200 parts of TPO base material, 10-15 parts of TPV film, 5-10 parts of magnesium hydroxide, 8-12 parts of titanium dioxide, 5-10 parts of cross-linking agent, 2-4 parts of antioxidant and 1-2 parts of lubricant; wherein the TPO substrate is a PP/EPDM copolymer. The preparation process of the automobile skylight drain pipe comprises the following steps: s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing at 65-75 ℃ for 20-30min to obtain a pretreated base material; s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 80-100 ℃ for 10-20min to obtain pretreated TPV; s3, blending and extruding: and (3) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, carrying out melt blending and extrusion, and carrying out water cooling to obtain the skylight drain pipe. The automobile skylight drain pipe prepared by the invention has the advantages of good flexibility, fatigue resistance, high and low temperature resistance and long service life.

Description

Automobile skylight drain pipe and preparation process thereof
Technical Field
The invention relates to the technical field of automobile drain pipes, in particular to an automobile skylight drain pipe and a preparation process thereof.
Background
A drainage pipe sheath of an automobile skylight belongs to an automobile skylight accessory system, one end of the drainage pipe sheath is connected with a skylight water tank, the middle part of the drainage pipe sheath is clamped in a metal plate of an automobile body, and the other end of the drainage pipe sheath extends out of the automobile body, so that the drainage function of the skylight is realized. Traditional sunroof drain pipe mostly all is PVC/EPDM material, and the tubular product self quality of this type of material is heavier, and the stiffening under the low temperature condition and send the noise with car sheet metal installation, probably produces harmful gas under high temperature environment, does not conform to the environmental protection theory that the car subtracts heavy emission reduction.
In order to solve the problems, a chinese patent with patent publication No. CN104149709A proposes an automobile sunroof aqueduct assembly, wherein the skylight aqueduct body is made of a silica gel elastic material. The skylight aqueduct adopts the silica gel tube material with green environmental protection, small smell and small noise to replace the common PVC material, thereby achieving the effects of practicability and environmental protection.
The above prior art solutions have the following drawbacks: although the silica gel water guide pipe is environment-friendly and noiseless, the silica gel material is poor in self-expansion performance and high in brittleness, and the skylight water guide pipe can be bent when passing through a position with a radian, mechanical fatigue is easily generated at a long-term bent part, so that the water guide pipe is broken at the bent part, and the service life is greatly shortened.
Disclosure of Invention
The invention aims to provide an automobile skylight drain pipe which has good flexibility, is fatigue-resistant, is resistant to high and low temperature and has long service life.
The purpose of the invention is realized by the following technical scheme:
the automobile skylight drain pipe comprises the following components in parts by weight:
Figure BDA0002373550250000011
wherein the TPO substrate is a PP/EPDM copolymer.
Further setting the following steps: the TPO substrate is prepared from the following components in percentage by weight: 45-65% of PP, 20-30% of EPDM, 2-3% of polyester fiber and the balance of auxiliary agent.
Further setting the following steps: the preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and auxiliary agent, drying at 60-80 ℃ for 40-50min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
Further setting the following steps: the TPV film is prepared from the following components in percentage by weight: 45-55% of PP, 25-35% of EPDM, 5-10% of epoxidized natural rubber ENR and the balance of auxiliary agent.
Further setting the following steps: the preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 2-5min, adding EPDM, epoxidized natural rubber ENR or NR and an auxiliary agent, mixing for 6-10min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1-2min to obtain the TPV rubber sheet.
Further setting the following steps: the antioxidant is at least one of thiodipropionate, alkyl bisphenol, thiobisphenol and sulfate.
Further setting the following steps: the lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The second purpose of the invention is to provide a preparation process of the automobile skylight drain pipe, and the second purpose of the invention is realized by the following technical scheme:
a preparation process of an automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing at 65-75 ℃ for 20-30min to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 80-100 ℃ for 10-20min to obtain pretreated TPV;
s3, blending and extruding: and (3) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, carrying out melt blending and extrusion, and carrying out water cooling to obtain the skylight drain pipe.
Further setting the following steps: in the step S3, the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, and the cooling water temperature of the extrusion-molded skylight drain pipe is 15-35 ℃.
Further setting the following steps: in the step S3, the temperatures of the first zone, the second zone, the third zone, the fourth zone and the fifth zone of the extruder are respectively 190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃.
The beneficial technical effects of the invention are as follows:
(1) according to the invention, TPO is selected as the base material, so that the problems of poor environmental protection, heavy weight, poor expansion performance, high brittleness, easy fatigue and the like of the traditional automobile skylight drain pipe made of PVC material or silica gel material are solved, and the prepared automobile skylight drain pipe has the advantages of environmental protection, light weight, good stretchability, high toughness, flame retardance, good high-low temperature service performance and more excellent comprehensive service performance;
(2) according to the invention, the TPO base material and the TPV film are compounded, so that the obtained automobile skylight drain pipe has the excellent performances of two materials, namely TPO and TPV, and the stretchability and the toughness are further improved; meanwhile, inorganic compounds such as magnesium hydroxide and titanium dioxide are added into the system, so that the heat resistance and the flame retardant property of the automobile skylight drain pipe are improved, and the service life of the automobile skylight drain pipe is prolonged;
(3) polyester fibers are added into a TPO substrate, and meanwhile, epoxidized natural rubber ENR is added into a TPV film, so that the polyester fibers and the epoxidized natural rubber have good tensile property and toughness, can be used as an effective reinforced filling material, and can obviously improve the mechanical property of an automobile skylight drain pipe;
(4) the forming process flow of the automobile skylight drain pipe is further optimized, and under the relevant forming process parameter conditions provided by the invention, the obtained automobile skylight drain pipe has higher surface smoothness, fewer surface particles and better quality, and can effectively improve the basic efficiency so as to improve the production benefit.
Detailed Description
Example 1:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
TABLE 1 ingredient content tables for examples 1-6
Figure BDA0002373550250000031
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is ethanolamine thiodipropionate.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from PP, EPDM, polyester fiber and an auxiliary agent which are 45.0%, 30.0%, 2.0% and 23.0% by mass respectively, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide with the mass ratio of 2: 1.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and an auxiliary agent, stirring and dispersing at 60 ℃, drying for 40min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from 45%, 35%, 10% and 10% by mass of PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 2min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 6min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the original rubber sheet within 1min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing at 65 ℃ for 20min to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 80 ℃ for 10min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 2:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is a mixture of ethanolamine thiodipropionate and 4,4- (octahydro-4, 7-methylene-5H-indene-5-subunit) bisphenol in a mass ratio of 1: 1.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from PP, EPDM, polyester fiber and an auxiliary agent in the mass ratio of 50.0%, 20.0%, 2.2% and 26.8%, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide in the mass ratio of 1: 1.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and auxiliary agent, stirring and dispersing at 65 ℃, drying for 42min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent in mass ratio of 48%, 25%, 9% and 18%, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 3min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 7min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1.2min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing for 22min at 68 ℃ to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 80 ℃ for 12min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 3:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is ethanolamine thiodipropionate, 4- (octahydro-4, 7-methylene-5H-indene-5-ylidene) bisphenol and 4,4' -dihydroxy diphenyl sulfide in a mass ratio of 1:1 compounded mixture.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from 55.0%, 23.0%, 2.4% and 19.6% of PP, EPDM, polyester fiber and an auxiliary agent by mass ratio, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide with the mass ratio of 3: 1.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and an auxiliary agent, stirring and dispersing at 70 ℃, drying for 45min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from 50.0%, 30.0%, 8.0% and 12.0% by mass of PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 4min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 8min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1.5min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing at 70 ℃ for 25min to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 85 ℃ for 14min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 4:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is 4,4' -dihydroxy diphenyl sulfide.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from 60.0%, 25.0%, 2.6% and 12.4% of PP, EPDM, polyester fiber and an auxiliary agent by mass ratio, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide with the mass ratio of 1: 2.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and auxiliary agent, stirring and dispersing at 75 ℃, drying for 48min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from 52.0 percent, 32.0 percent, 7.0 percent and 9.0 percent of PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent by mass, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 5min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 9min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1.6min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing a TPO substrate, a lubricant and an antioxidant, and drying and dispersing at 72 ℃ for 27min to obtain a pretreated substrate;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 95 ℃ for 16min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 5:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is a mixture of ethanolamine thiodipropionate and 4,4- (octahydro-4, 7-methylene-5H-indene-5-subunit) bisphenol in a mass ratio of 1: 1.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from PP, EPDM, polyester fiber and an auxiliary agent in the mass ratio of 65.0%, 28.0%, 2.8% and 4.2%, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide in the mass ratio of 1: 2.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and auxiliary agent, stirring and dispersing at 80 ℃, drying for 50min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from 54.0%, 28.0%, 5.0% and 13.0% by mass of PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 5min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 10min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1.8min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing a TPO substrate, a lubricant and an antioxidant, and drying and dispersing for 29min at 75 ℃ to obtain a pretreated substrate;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 100 ℃ for 18min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 6:
the automobile skylight drain pipe comprises the components in the content shown in the table 1.
Wherein the cross-linking agent is N, N-Methylene Bisacrylamide (MBA).
The antioxidant is 4,4- (octahydro-4, 7-methylene-5H-inden-5-ylidene) bisphenol.
The lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
The TPO base material is prepared from 60.0%, 20.0%, 3.0% and 17.0% by mass of PP, EPDM, polyester fiber and an auxiliary agent respectively, wherein the auxiliary agent is a mixture of silicone oil and aluminum hydroxide in a mass ratio of 1: 2.
The preparation process of the TPO substrate comprises the following steps: mixing PP, EPDM, polyester fiber and auxiliary agent, stirring and dispersing at 80 ℃, drying for 50min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
The TPV film is prepared from 55.0%, 30.0%, 10.0% and 5.0% by mass of PP, EPDM, epoxidized natural rubber ENR-25 and an auxiliary agent, wherein the auxiliary agent is an anti-aging agent DNP.
The preparation process of the TPV film comprises the following steps: and (2) adding PP into an internal mixer, mixing for 5min at the temperature of 140-170 ℃, adding EPDM, epoxidized natural rubber ENR-25 and an anti-aging agent DNP, mixing for 10min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the original rubber sheet within 2min to obtain the TPV rubber sheet.
The preparation process of the automobile skylight drain pipe comprises the following steps:
s1, base material pretreatment: mixing the TPO base material, a lubricant and an antioxidant, and drying and dispersing at 67 ℃ for 25min to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 93 ℃ for 15min to obtain pretreated TPV;
s3, blending and extruding: and (2) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, wherein the traction speed of the extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, the temperatures of a first zone, a second zone, a third zone, a fourth zone and a fifth zone of the extruder are respectively 170-190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃, and the materials are subjected to melt blending and extrusion and are cooled by water at 15-35 ℃ to obtain the skylight drain pipe.
Example 7:
this example differs from example 3 in that the quality of polyester fibers and the like in the TPO base material of example 3 is replaced with PP.
Example 8:
the automobile skylight drainpipe of the embodiment is different from the embodiment 3 in that the quality of epoxidized natural rubber ENR-25 and the like in TPV film in the embodiment 3 is replaced by PP.
Comparative example 1:
this comparative example differs from example 1 in that the TPV film quality was replaced with a TPO substrate.
Comparative example 2:
the difference between the comparative example and the example 1 is that the quality of magnesium hydroxide, titanium white powder and the like is replaced by TPO base material.
And (3) performance detection:
the tensile properties of the skylight drainpipes obtained in examples 1-8 and comparative examples 1-2 were determined according to ISO 37-2017 standards, and the test results are shown in Table 2.
The combustion performance of the skylight drainpipes of examples 1-8 and comparative examples 1-2 was determined with reference to the ISO 3795 standard, and the results are shown in Table 2.
The cold resistance of the roof drain pipes of examples 1 to 8 and comparative examples 1 to 2 was measured with reference to TSM1721G standard, and the measurement results are shown in Table 2.
The skylight drainpipes of examples 1-8 and comparative examples 1-2 were subjected to xenon lamp aging (65 ℃ C.. times.2000 h 8 KJ/m) as determined by reference to ASTM D4459 standard-2h) The retention of tensile strength and the retention of elongation at break under the conditions were as shown in FIG. 2.
Table 2 table of performance testing data
Figure BDA0002373550250000091
The implementation principle and the beneficial effects of the embodiment are as follows: according to the invention, TPO is selected as the base material, so that the problems of poor environmental protection, heavy weight, poor expansion performance, high brittleness, easy fatigue and the like of the traditional automobile skylight drain pipe made of PVC material or silica gel material are solved, and the prepared automobile skylight drain pipe has the advantages of environmental protection, light weight, good stretchability, high toughness, flame retardance, good high-low temperature service performance and more excellent comprehensive service performance; meanwhile, inorganic compounds such as magnesium hydroxide and titanium dioxide are added into the system, so that the heat resistance and the flame retardant property of the automobile skylight drain pipe are improved, and the service life of the automobile skylight drain pipe is prolonged.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. The automobile skylight drain pipe is characterized by comprising the following components in parts by weight:
150 and 200 portions of TPO substrate;
10-15 parts of TPV film;
5-10 parts of magnesium hydroxide;
8-12 parts of titanium dioxide;
5-10 parts of a cross-linking agent;
2-4 parts of an antioxidant;
1-2 parts of a lubricant;
wherein the TPO substrate is a PP/EPDM copolymer.
2. The sunroof drain pipe according to claim 1, wherein: the TPO substrate is prepared from the following components in percentage by weight: 45-65% of PP, 20-30% of EPDM, 2-3% of polyester fiber and the balance of auxiliary agent.
3. The drainage pipe for automobile skylights according to claim 1, wherein the TPO base material is prepared by the following process: mixing PP, EPDM, polyester fiber and auxiliary agent, drying at 60-80 ℃ for 40-50min, putting into an extruder, melting and blending at 135-165 ℃, extruding and granulating to obtain TPO base material particles.
4. The automobile sunroof drain pipe according to claim 2, wherein the TPV film is prepared from the following components in percentage by weight: 45-55% of PP, 25-35% of EPDM, 5-10% of epoxidized natural rubber ENR and the balance of auxiliary agent.
5. The automobile skylight drain pipe according to claim 2, wherein the TPV film is prepared by the following process: and (2) adding PP into an internal mixer, mixing for 2-5min, adding EPDM, epoxidized natural rubber ENR or NR and an auxiliary agent, mixing for 6-10min, discharging rubber, discharging the rubber sheet on an open mill while the rubber sheet is hot, and cooling the raw rubber sheet within 1-2min to obtain the TPV rubber sheet.
6. The sunroof drain pipe according to claim 2, wherein: the antioxidant is at least one of thiodipropionate, alkyl bisphenol, thiobisphenol and sulfate.
7. The sunroof drain pipe according to claim 2, wherein: the lubricant is low molecular weight polypropylene with molecular weight of 20000-40000.
8. The manufacturing process of the drainage pipe for the automobile sunroof according to any one of claims 1 to 7, comprising the steps of:
s1, base material pretreatment: mixing the TPO base material, the lubricant and the antioxidant, and drying and dispersing at 65-75 ℃ for 20-30min to obtain a pretreated base material;
s2, TPV pretreatment: mixing TPV, magnesium hydroxide and titanium dioxide, and drying and dispersing at 80-100 ℃ for 10-20min to obtain pretreated TPV;
s3, blending and extruding: and (3) putting the pretreated base material obtained in the step S1, the pretreated TPV obtained in the step S2 and a crosslinking agent into an extruder, carrying out melt blending and extrusion, and carrying out water cooling to obtain the skylight drain pipe.
9. The manufacturing process of the drainage pipe for the automobile skylight according to claim 8, wherein in the step S3, the drawing speed of an extruder is 8.5 m/min, the extrusion speed is 8.5 m/min, and the cooling water temperature of the drainage pipe for the automobile skylight formed by extrusion is 15-35 ℃.
10. The process as claimed in claim 8, wherein in the step S3, the temperatures of the first zone, the second zone, the third zone, the fourth zone and the fifth zone of the extruder are 190 ℃, 175-195 ℃, 180-200 ℃ and 175-195 ℃.
CN202010061759.6A 2020-01-18 2020-01-18 Automobile skylight drain pipe and preparation process thereof Pending CN111154184A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1843745A (en) * 2006-04-10 2006-10-11 天津鹏翎胶管股份有限公司 Method for preparing thermoplastic elastomer rubber tube of ethylene-propylene rubber/polypropylene
CN108641200A (en) * 2018-05-21 2018-10-12 广州华新科智造技术有限公司 A kind of automobile sealing strip TPV material and preparation method thereof
CN109627590A (en) * 2018-12-24 2019-04-16 宁波汉吉高分子材料有限公司 A kind of weather strip for automobile wear-resisting TPV material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1843745A (en) * 2006-04-10 2006-10-11 天津鹏翎胶管股份有限公司 Method for preparing thermoplastic elastomer rubber tube of ethylene-propylene rubber/polypropylene
CN108641200A (en) * 2018-05-21 2018-10-12 广州华新科智造技术有限公司 A kind of automobile sealing strip TPV material and preparation method thereof
CN109627590A (en) * 2018-12-24 2019-04-16 宁波汉吉高分子材料有限公司 A kind of weather strip for automobile wear-resisting TPV material and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
橡胶工业原材料与装备简明手册编审委员会: "《橡胶工业原材料与装备简明手册 原材料与工艺耗材分册》", 31 January 2019, 北京理工大学出版社 *
沙力争: "《纸加工技术》", 28 February 2009, 中国轻工业出版社 *
涂志刚等: "《塑料软包装材料》", 31 July 2018, 文化发展出版社 *

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