CN108892830A - A kind of hollow blow molding fretting map car duct material and preparation method thereof - Google Patents

A kind of hollow blow molding fretting map car duct material and preparation method thereof Download PDF

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Publication number
CN108892830A
CN108892830A CN201810251896.9A CN201810251896A CN108892830A CN 108892830 A CN108892830 A CN 108892830A CN 201810251896 A CN201810251896 A CN 201810251896A CN 108892830 A CN108892830 A CN 108892830A
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China
Prior art keywords
parts
fretting map
blow molding
car duct
hollow blow
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CN201810251896.9A
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Chinese (zh)
Inventor
王滨
刘曙阳
蒋顶军
王峰
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NADFINLO PLASTICS INDUSTRY (SHENZHEN) Co.,Ltd.
NANJING JULONG ENGINEERING PLASTICS Co.,Ltd.
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NANJING JULONG TECHNOLOGY Co Ltd
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Priority to CN201810251896.9A priority Critical patent/CN108892830A/en
Publication of CN108892830A publication Critical patent/CN108892830A/en
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    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/786—Temperature
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/009—Use of pretreated compounding ingredients
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/107—Nitroso compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/18—Binary blends of expanding agents
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • 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
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds

Abstract

The present invention relates to a kind of car duct and preparation method thereof, especially a kind of hollow blow molding fretting map car duct material and preparation method thereof.Material of the invention includes the component of following parts by weight：50-80 parts of polyethylene, 0-15 parts of mineral powder, 1-30 parts of polyester, 0.2-1 parts of tackifier, 0.5-10 parts of foaming agent, 5-15 parts of blowing promotor, 0.2-0.5 parts of lubricant, 0.2-0.5 parts of antioxidant.And disclose preparation method.Hollow blow molding fretting map car duct of the present invention has cell density height, and the good feature of apparent mass has the characteristics that light-weight, good heat-insulation effect, good stability of the dimension, high yield rate with its automobile engine cover product prepared；In the case where 40% or more product entirety loss of weight, components are not influenced and normally assembles and uses, have reached lightweight purpose.

Description

A kind of hollow blow molding fretting map car duct material and preparation method thereof
Technical field
The present invention relates to a kind of car duct material and preparation method thereof, especially a kind of hollow blow molding fretting map automobile wind Road material and preparation method thereof, belongs to field of material technology.
Background technique
Under energy crisis and the dual-pressure of environmental pollution, lightweight has become necessarily becoming for current automobile industry development Gesture.According to correlative study, the every loss of weight 10% of automobile, oil consumption can reduce by 8% to 10%.However, the car of China is with state's outgoing at present It is compared up to country, the high 8-10% of complete vehicle weight, commercial vehicle wants high 10-15%, to catch up with advanced world levels and also need to reduce 25- 30% car weight.Therefore, automotive light weight technology task in China's is very urgent.
For vehicle air conditioner duct, air duct assembly currently on the market mainly consists of two parts, using high density The molding pipe main body of blow moulded polyethyene and the outer adhesive layer for the EVA foamed cotton for playing function of heat insulation are constituted, this air-conditioning There are following technical problems in air duct：1) weight is big；2) it is bonded by glue, it is exceeded tight to will cause toxic volatile organic matter VOC Weight；3) soundproof effect of material is poor, especially air-conditioning work when, the noise of generation is bigger；4) not because of outer layer EVA foam size Stablize, causes general assembly disqualification rate relatively high.
Summary of the invention
In order to solve the above problem, the present invention provides hollow blow molding fretting map car duct material and preparation method thereof, product With uniform cell structure, the advantages that high cell density, good apparent mass.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of hollow blow molding fretting map car duct material, the component including following parts by weight：
50-80 parts of polyethylene,
1-30 parts of polyester,
0.2-1 parts of tackifier,
0.5-10 parts of foaming agent,
5-15 parts of blowing promotor,
0-15 parts of mineral powder,
0.2-0.5 parts of antioxidant
Further technical solution, the polyethylene are high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene One of alkene or two kinds of mixtures, 190 DEG C of melt viscosity are 5 × 103~1 × 105Pa.s；Preferred viscosities be 3 × 104The high density polyethylene (HDPE) of Pa.s；
Further technical solution, the polyester are polyethylene terephthalate (PET), poly terephthalic acid fourth two One of alcohol ester (PBT), polyarylate；It is preferred that PET；
Further technical solution, the tackifier are lauroyl peroxide, peroxidized t-butyl perbenzoate, peroxidating uncle One of pentanoic acid tert-butyl ester, methyl ethyl ketone peroxide, cyclohexanone peroxide；It is preferred that peroxidized t-butyl perbenzoate；
Further technical solution, the foaming agent are hydrazides foaming agent, dinitroso class foaming agent, azo foaming Any two kinds of mixture, mixed proportion 1 in agent：9-2:3.
Further technical solution, the hydrazides foaming agent includes the double benzenesulfo-nyl hydrazide (OBSH) of 4,4 '-oxos, right Toluene sulfonyl hydrazide；
The dinitroso class foaming agent includes dinitrosopentamethylene tetramine (DPT), N, N '-dimethyl-N, N '- Dinitrosoterephthalamine (NTA)；
The azo foaming agent is diethyl azodiformate.
Further technical solution, the foaming agent are that weight ratio is 1：The mixture of 4 OBSH and NTA；
Further technical solution, the blowing promotor include nucleating agent, foam stabilizer, dispersing agent and compatilizer, wherein The nucleating agent be one of organic modification montmonrillonite, graphene, nano-attapulgite, nano silica, it is preferably organic to change Property montmorillonite；Foam stabilizer is ethylene-vinyl acetate copolymer (wherein, VA content is 5%~18%), organic silicone oil (including modification Organic silicone oil), fatty acid monoglyceride, one of polyglycol ether, preferably organic silicone oil；Dispersing agent is ethylene stearic bicine diester One of amine (EBS), stearic acid, tristerin, preferably EBS；Compatilizer is modified by maleic acid anhydride graft POE, methyl One of acrylic acid dehydrated glyceride graft polypropylene, modified by maleic acid anhydride graft SEBS, polyacrylate, preferably maleic acid Acid anhydride is grafted POE.
Further technical solution, the mineral powder be one of talcum powder, calcium carbonate, mica, barium sulfate, preferably Talcum powder；The antioxidant is 1010,1098,168, one of H10, H318, preferably antioxidant 1010；
The preparation method of the hollow blow molding fretting map car duct material, includes the following steps：
Step 1：Polyethylene, tackifier, mineral powder, antioxidant are mixed in mixing machine according to constant weight number 1-3min is added in double screw extruder by hopper, is granulated at a temperature of 160-200 DEG C, screw speed 200-400r/ Min obtains composite polyethylene material；
Step 2：Foaming agent is sufficiently mixed in high mixer in advance according to parts by weight, then by side spout It is added in single screw rod blow moulding machine；Meanwhile the composite polyethylene material, polyester, blowing promotor that step 1 obtains are added to single spiral shell Bar blow moulding machine barrel；It at a temperature of 150-200 DEG C, is blow molded, obtains the fretting map vapour with oval or oblate micro pore shape Vehicle air duct.
Further technical solution, single screw rod blow moulding machine screw slenderness ratio are 18：1~36:1, preferably 20：1, compression ratio is 3:1~5:1, preferably 3.5：1.
Beneficial effect
Compared with prior art, the present invention has the following obvious advantages：
1, the present invention is obtained using hollow fretting map blow molding technology has fine and smooth microcellular structure car duct, microcellular structure Presence on the one hand make the direct loss of weight of vehicle air conditioner duct weight be more than 40%, improve product apparent mass, pass through polyester Addition so that the strength of materials is good in addition, it also has many advantages, such as good rigidity, excellent resiliency, heat-insulated, sound insulation value, It is not only able to solve components lightweight problem, also solves dimensional stability, the heat-insulated problem of non-uniform of existing air-conditioning duct. The buffer function of fretting map abscess reduces the noise that air duct vibration generates during automobile is advanced, and improves ride comfort. In addition, eliminating the use of bonding agent due to eliminating outer bonding EVA foam, therefore, the VOC of air duct assembly is significantly reduced Burst size meets the VOC standard requirements of main engine plants；Air duct assembly manufacturing process is shortened simultaneously, reduces amount of parts, The manufacturing cost for reducing car duct improves general assembly qualification rate；Product also has good long term heat ageing performance, Meet the components requirement of experiment such as main engine plants' high/low temperature circulation, condensation test, low temperature ball falling impact.
2, the present invention realizes micro- Cross-linked to polyethylene by adding tackifier, significantly improves it in foaming process In sag resistant ability and abscess production stability, in addition the use of foam stabilizer be conducive to improve foam structure uniformity；This The use of blowing promotor can improve solubility of the gas in polyethylene in invention, improve reservation of the gas in blow-molding process Rate obtains more bubbles, realizes obvious work loss of weight, while the use of nucleating agent and dispersing agent and compatilizer has fine bubble Hole effect, can regulate and control cell nucleation and growth course in foaming process, increase cell density, eliminate apparent gas trace of product etc. Defect is conducive to improve air duct products appearance quality.
3, in the preparation method of material of the present invention, foaming agent is introduced by side feed material, this is conducive to that foaming agent is avoided to exist Decomposition in advance in screw rod, the waste of gas improve foaming agent efficiency.
4, the present invention provides the preparation method of the material, and technique is controllable, and production cost is low, high-efficient, be easily achieved industry Change.
Detailed description of the invention
Fig. 1 is the internal microcellular structure schematic diagram of hollow blow molding fretting map car duct material of the invention.
Specific embodiment
The present invention is described in further detail for embodiment with reference to the accompanying drawing.
Embodiment 1
A kind of preparation method of hollow blow molding fretting map car duct material, includes the following steps：
Step 1：By 50 parts of high density polyethylene (HDPE), 1 part of peroxidized t-butyl perbenzoate, 10 parts of talcum powder, antioxidant 1010 0.2 part mixes 1-3min according to constant weight number in mixing machine, is added in double screw extruder by hopper, in 160- It is granulated at a temperature of 200 DEG C, screw speed 200-400r/min obtains composite polyethylene material；
Step 2：OBSH1.6 parts, DPT6.4 parts are sufficiently mixed in high mixer in advance, then by side spout It is added in single screw rod blow moulding machine；Meanwhile composite polyethylene material, 30 parts of the PET, organic modification montmonrillonite 1 for obtaining step 1 Part, 1 part of organic silicone oil, 1 part of EBS, 2 parts of modified by maleic acid anhydride graft POE be added to single screw rod blow moulding machine barrel；In 150- It at a temperature of 200 DEG C, is blow molded, obtains hollow fretting map car duct；Single screw rod blow moulding machine screw slenderness ratio is 18：1~36: 1, preferably 20：1, compression ratio 3:1~5:1, preferably 3.5：1.
Embodiment 2
A kind of preparation method of hollow blow molding fretting map car duct material, includes the following steps：
Step 1：By 60 parts of high density polyethylene (HDPE), 20 parts of linear low density polyethylene, 0.5 part of lauroyl peroxide, carbonic acid 15 parts of calcium, 0.5 part of irgasfos 168 1-3min is mixed in mixing machine according to constant weight number, double spiral shells are added to by hopper It in bar extruder, is granulated at a temperature of 160-200 DEG C, screw speed 200-400r/min obtains composite polyethylene material；
Step 2：1 part of OBSH, 9 parts of NTA are sufficiently mixed in high mixer in advance, then added by side spout Enter in single screw rod blow moulding machine；Meanwhile by step 1 obtain composite polyethylene material, 1 part of PET, 3 parts of nano silica, have 4 parts of machine silicone oil, 3 parts of EBS, 5 parts of modified by maleic acid anhydride graft POE be added to single screw rod blow moulding machine barrel；In 150-200 DEG C of temperature It under degree, is blow molded, obtains hollow fretting map car duct；Single screw rod blow moulding machine screw slenderness ratio is 18：1~36:1, preferably 20：1, compression ratio 3:1~5:1, preferably 3.5：1.
Embodiment 3
A kind of preparation method of hollow blow molding fretting map car duct material, includes the following steps：
Step 1：60 parts of high density polyethylene (HDPE), 0.2 part of peroxidating trimethylacetic acid tertiary butyl ester, 0.3 part of antioxidant 1010 are existed 1-3min is mixed in mixing machine, is added in double screw extruder by hopper, is granulated at a temperature of 160-200 DEG C, and screw rod turns Fast 200-400r/min, obtains composite polyethylene material；
Step 2：0.2 part of unifor, 0.3 part of NTA are sufficiently mixed in high mixer in advance, then by Side spout is added in single screw rod blow moulding machine；Meanwhile composite polyethylene material, 10 parts of the PBT, You Jigai for obtaining step 1 2 parts of montmorillonite of property, 2 parts of polyglycol ether, 1 part of stearic acid, 4 parts of maleic anhydride-g-SBS be added to single screw rod blow moulding machine material Cylinder；It at a temperature of 150-200 DEG C, is blow molded, obtains hollow fretting map car duct；Single screw rod blow moulding machine screw slenderness ratio is 18：1~36:1, preferably 20：1, compression ratio 3:1~5:1, preferably 3.5：1.
Embodiment 4
A kind of preparation method of hollow blow molding fretting map car duct material, includes the following steps：
Step 1：By 55 parts of high density polyethylene (HDPE), 10 parts of linear low density polyethylene, peroxidized t-butyl perbenzoate 0.6 Part, 8 parts of talcum powder, 0.4 part of antioxidant 1010 1-3min is mixed in mixing machine according to constant weight number, by hopper plus Enter into double screw extruder, be granulated at a temperature of 160-200 DEG C, it is compound to obtain polyethylene by screw speed 200-400r/min Material；
Step 2：DPT4 parts, 2 parts of diethyl azodiformate are sufficiently mixed in high mixer in advance, then by Side spout is added in single screw rod blow moulding machine；Meanwhile composite polyethylene material, 22 part, nanometer two of PET for obtaining step 1 1 part of silica, 1 part of polyglycol ether, 2 parts of stearic acid, 3 parts of maleic anhydride-g-SBS be added to single screw rod blow moulding machine barrel； It at a temperature of 150-200 DEG C, is blow molded, obtains hollow fretting map car duct；Single screw rod blow moulding machine screw slenderness ratio is 18： 1~36:1, preferably 20：1, compression ratio 3:1~5:1, preferably 3.5：1.
According to above-mentioned preparation method, comparative example 1, embodiment 1, embodiment 2, embodiment 3, embodiment 4, specific formula is as follows Shown in table：
Component Comparative example 1 Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4
High density polyethylene (HDPE) 100 50 60 60 55
Linear low density polyethylene 20 10
PET 30 1 22
PBT 10
Peroxidized t-butyl perbenzoate 1 0.6
Lauroyl peroxide 0.5
Peroxidating trimethylacetic acid tertiary butyl ester 0.2
OBSH 1.6 1
Unifor 0.2
DPT 6.4 2
NTA 9 0.3
Diethyl azodiformate 4
Organic modification montmonrillonite 1 2
Nano silica 3 1
Organic silicone oil 1 4
Polyglycol ether 2 1
EBS 1 3
Stearic acid 1 2
Modified by maleic acid anhydride graft POE 2 5
Maleic anhydride-g-SBS 4 3
Talcum powder 10 8
Calcium carbonate 15
Antioxidant 1010 0.2 0.3 0.4
Irgasfos 168 0.5
To in upper table comparative example and embodiment detect, results of property is as shown in the table：
Product of the present invention comparative example and embodiment performance table
As can be seen from the above results, compared with comparative example 1, the embodiment of the present invention 1, embodiment 2, embodiment 3, embodiment 4 weight reduce at least 40% or more, and light weight effect is obvious.Meanwhile the present invention has foam structure uniform, cell density is high, Therefore there is good rigidity, excellent resiliency, this is not only able to solve components lightweight problem, also solves existing sky Adjust dimensional stability, the heat-insulated problem of non-uniform in air duct.In addition, the buffer function of fretting map abscess of the present invention also reduces automobile The noise that air duct vibration generates in traveling process, improves ride comfort.
The foregoing is merely a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, any Those skilled in the art's equivalent change or modification made by Spirit Essence according to the present invention, should all cover of the invention Within protection scope.

Claims (10)

1. a kind of hollow blow molding fretting map car duct material, which is characterized in that the component including following parts by weight：
50-80 parts of polyethylene,
1-30 parts of polyester,
0.2-1 parts of tackifier,
0.5-10 parts of foaming agent,
5-15 parts of blowing promotor,
0-15 parts of mineral powder,
0.2-0.5 parts of antioxidant.
2. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The polyethylene is highly dense One of polyethylene, low density polyethylene (LDPE), linear low density polyethylene or two kinds of mixtures are spent, polyethylene is at 190 DEG C Melt viscosity is 5 × 103~1×105Pa.s。
3. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The polyester is poly- to benzene One of naphthalate, polybutylene terephthalate (PBT), polyarylate.
4. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The foaming agent is hydrazides Class foaming agent, dinitroso class foaming agent, any two kinds of mixture in azo foaming agent, mixed proportion 1：9-2:3.
5. hollow blow molding fretting map car duct material according to claim 4, it is characterised in that：The hydrazides foaming Agent includes 4,4 '-oxos double benzenesulfo-nyl hydrazides, unifor；
The dinitroso class foaming agent includes dinitrosopentamethylene tetramine, N, N '-dimethyl-N, N '-dinitroso Terephthalamide；
The azo foaming agent is diethyl azodiformate.
6. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The blowing promotor includes Nucleating agent, foam stabilizer, dispersing agent and compatilizer；
Wherein, the nucleating agent is one of organic modification montmonrillonite, graphene, nano-attapulgite, nano silica；
Foam stabilizer is one of ethylene-vinyl acetate copolymer, organic silicone oil, fatty acid monoglyceride, polyglycol ether；
Dispersing agent is one of ethylene bis stearamide, stearic acid, tristerin；
Compatilizer is modified by maleic acid anhydride graft POE, methacrylic dehydrated glyceride graft polypropylene, maleic anhydride are grafted and change One of property SEBS, polyacrylate.
7. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The tackifier are peroxide Change lauroyl, peroxidized t-butyl perbenzoate, peroxidating trimethylacetic acid tertiary butyl ester, methyl ethyl ketone peroxide, in cyclohexanone peroxide One kind.
8. hollow blow molding fretting map car duct material according to claim 1, it is characterised in that：The mineral powder is One of talcum powder, calcium carbonate, mica, barium sulfate；
The antioxidant is 1010,1098,168, one of H10, H318.
9. the preparation method of hollow blow molding fretting map car duct material according to claim 1-8, feature It is：Include the following steps：
Step 1：Polyethylene, tackifier, mineral powder, antioxidant are mixed into 1- according to constant weight number in mixing machine 3min is added in double screw extruder by hopper, is granulated at a temperature of 160-200 DEG C, screw speed 200-400r/min, Obtain composite polyethylene material；
Step 2：Foaming agent is sufficiently mixed in high mixer in advance according to parts by weight, is then added by side spout In single screw rod blow moulding machine；Meanwhile the composite polyethylene material, polyester, blowing promotor that step 1 obtains being added to single screw rod and blown Molding machine barrel；It at a temperature of 150-200 DEG C, is blow molded, obtains the fretting map automobile wind with oval or oblate micro pore shape Road.
10. the preparation method of hollow blow molding fretting map car duct material according to claim 9, it is characterised in that：It is single Screw rod blow moulding machine screw slenderness ratio is 18：1-36:1, compression ratio 3:1-5:1.
CN201810251896.9A 2018-03-26 2018-03-26 A kind of hollow blow molding fretting map car duct material and preparation method thereof Pending CN108892830A (en)

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CN109927270A (en) * 2019-03-06 2019-06-25 江苏星辰星汽车附件有限公司 A kind of preparation method in blow molding foaming air duct
CN110343336A (en) * 2019-05-29 2019-10-18 贵州省材料产业技术研究院 A kind of great surface quality polypropylene micro foaming composite material and preparation method thereof
CN110669275A (en) * 2019-10-30 2020-01-10 南京聚隆科技股份有限公司 Micro-foaming automobile air duct material with strong shearing structure and preparation method thereof
CN110684282A (en) * 2019-10-30 2020-01-14 南京聚隆科技股份有限公司 3D hollow blow molding micro-foaming polyolefin material and preparation method thereof
CN113242808A (en) * 2018-12-19 2021-08-10 法雷奥热系统公司 Housing for a front module of a motor vehicle
CN113637250A (en) * 2021-08-20 2021-11-12 赤途实业(上海)有限公司 Polymer composition for container cover and container cover
CN114835964A (en) * 2022-04-11 2022-08-02 张家港禾福新材料科技有限公司 Polyethylene modified material, pearlescent film and preparation method of pearlescent film

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CN113242808A (en) * 2018-12-19 2021-08-10 法雷奥热系统公司 Housing for a front module of a motor vehicle
CN109927270A (en) * 2019-03-06 2019-06-25 江苏星辰星汽车附件有限公司 A kind of preparation method in blow molding foaming air duct
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CN110684282A (en) * 2019-10-30 2020-01-14 南京聚隆科技股份有限公司 3D hollow blow molding micro-foaming polyolefin material and preparation method thereof
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CN114835964A (en) * 2022-04-11 2022-08-02 张家港禾福新材料科技有限公司 Polyethylene modified material, pearlescent film and preparation method of pearlescent film

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Application publication date: 20181127