CN104448882B - A kind of vehicle noise insulation pad injected plastics material - Google Patents
A kind of vehicle noise insulation pad injected plastics material Download PDFInfo
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- CN104448882B CN104448882B CN201410724829.6A CN201410724829A CN104448882B CN 104448882 B CN104448882 B CN 104448882B CN 201410724829 A CN201410724829 A CN 201410724829A CN 104448882 B CN104448882 B CN 104448882B
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- parts
- plastics material
- insulation pad
- noise insulation
- vehicle noise
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Abstract
The present invention relates to polymeric material field, more particularly to a kind of injected plastics material for vehicle noise insulation pad.The component that the material includes following parts by weight is prepared from：5 10 parts of low density polyethylene (LDPE)s, 10 15 parts of propylene-based elastomerics, 50 70 parts of nano barium sulfates, 0 20 parts of nano-calcium carbonates, 35 parts of flow ability modifying agents, 0.7 1.2 parts of carbon blacks, 0.5 2 parts of coupling agents, 0.4 0.6 parts of compound antioxidants.The present invention fundamentally overcomes the contradiction of mobility, release property and the injection molding processability of high filled composite materials, while product particularly of the present invention has excellent molding processibility and release property, the pliability of flexible body material, stress-whitening resistance, the mechanical performance such as excellent tearing toughness.
Description
Technical field
The present invention relates to polymeric material field, more particularly to a kind of injected plastics material for vehicle noise insulation pad.
Background technology
Orthodox car sound insulation cushion material is formed by EVA elastomers height filling barium sulfate through plastic uptake technique, and plastic uptake technique pair
Product has compared with strict requirements：1. plastics sucking moulding technique can only produce the product that wall thickness differs greatly；2. the wall of plastics sucking moulding
It is thick general in the range of 1 to 2mm or thinner；3. the product's dimensional precision of plastics sucking moulding is poor, and its relative errors is in percentage
One of more than.
So-called injection molding refers to spray the material for having heated melting in injection mould, through cooling with after solidification, obtaining
The method of products formed.Its detailed process is, by granular or powdered plastic from the hopper of injection machine sends into the barrel of heating, through adding
Thermoplastic is melted into molten condition, then presses and injected by nozzle in the mold cavity of closure, and die cavity is kept by hardening by cooling
The shape assigned, die sinking just completes a work period after taking out colloid.
Propylene-based elastomeric is the novel elastic of the major chemical company such as Exxon Mobil, Mitsui Chemicals exploitation in recent years
Body, it has melt flow rate (MFR) high, to temperature and the very sensitive elastomer of shearing, as temperature rise and shear rate increase
Greatly, the reduction of its melt viscosity is very fast, and the injection molding technique than conventional ethylene based elastomeric is easier, in addition, high filling ethene
Based elastomeric material is easy to blushing occur, the easy sticking to mould in injection, and certain difficulty is caused to Shooting Technique, and acrylic
Elastomer solves this problem well.
The content of the invention
It is not enough in order to make up traditional plastic uptake technique, fundamentally solved the invention discloses injection molded automobile sound insulation cushion material
The problem of plastics sucking moulding, and technique is easy to control, price is relatively low, has filled up sky of the domestic product in injected plastics material field
In vain.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of vehicle noise insulation pad injected plastics material, including the component of following parts by weight are prepared from：5-10 parts of low density polyethylenes
Alkene, 10-15 parts of propylene-based elastomerics, 50-70 parts of nano barium sulfates, 0-20 parts of nano-calcium carbonates, 3-5 parts of flow ability modifying agents,
0.7-1.2 parts of carbon blacks, 0.5-2 parts of coupling agents, 0.4-0.6 parts of compound antioxidants.
Wherein, the flow ability modifying agent is OPE.The coupling agent is titanate esters.The compound antioxidant is
Antioxidant 1010 and irgasfos 168 are compounded in 3: 4 ratios.
The present invention also provides a kind of preparation method of vehicle noise insulation pad injected plastics material, it is characterised in that comprise the following steps：
A, the coupling agent and the nano barium sulfate, the nano-calcium carbonate added into mixed at high speed pot, in 80-120
DEG C surface preparation obtains pretreated filler in 2-6 minutes；
B, by the low density polyethylene (LDPE), the propylene-based elastomeric, the flow ability modifying agent, the carbon black is described multiple
It is put into antioxidant and the pretreated filler after banbury banburying, then kneads, squeezes at 130-150 DEG C through double screw extruder
Go out, cool down, granulating and process.
Product of the present invention relate to the mobility of high packing material, release property, pliability, the formula of stress-whitening resistance and set
Meter, has captured auto sound cushion material in mobility, release property, pliability, the multinomial key technology such as stress-whitening resistance, from root
The contradiction of mobility, release property and the injection molding processability of high filled composite materials is overcome in sheet, particularly this project production
While product have excellent molding processibility and release property, the pliability of flexible body material, stress-whitening resistance is excellent
The mechanical performance such as tearing toughness.
Embodiment
Below in conjunction with the embodiment in the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Embodiment 1：
By 0.5KG titanate esters, 54KG nano barium sulfates, 6KG nano-calcium carbonates add mixed at high speed pot, on 100 DEG C of surfaces
Pretreatment obtains pretreated filler in 4 minutes；
By obtained pretreated filler and 5KG low density polyethylene (LDPE)s, 10KG propylene-based elastomerics, 3KG OPEs,
0.7KG carbon blacks, 0.257KG antioxidant 1010s, 0.343KG irgasfos 168s are put into banbury after 150 DEG C of banburyings 10 minutes, then
Processed through double screw extruder in 140 DEG C of mixings, extrusion, cooling, granulation.
Obtained sound insulating pad compounded mix proportion is 2.2, can obtain more preferable soundproof effect；Its material property representative value
For：Melt flow index 55g/10min (190 DEG C, 2.16kg), tensile strength 1.67MPa, elongation at break 400, tearing strength
For 15000N/m, shore hardness A is 74.
Embodiment 2：
By 0.8KG titanate esters, 70KG nano barium sulfates add mixed at high speed pot, are obtained within 6 minutes in 80 DEG C of surface preparations
Pretreated filler；
By obtained pretreated filler and 10KG low density polyethylene (LDPE)s, 13KG propylene-based elastomerics, 5KG oxidic polyethylenes
Wax, 1.2KG carbon blacks, 0.171KG antioxidant 1010s, 0.229KG irgasfos 168s are put into banbury after 140 DEG C of banburyings 15 minutes,
Processed again through double screw extruder in 130 DEG C of mixings, extrusion, cooling, granulation.
Obtained sound insulating pad compounded mix proportion is 2.23, can reduce automobile under the premise of preferable soundproof effect is kept
Weight on car.Its material property representative value is：Melt flow index 65g/10min (190 DEG C, 2.16kg), tensile strength
1.52MPa, elongation at break 400, tearing strength is 13000N/m, and shore hardness A is 71.
Embodiment 3：
By 2KG titanate esters, 60KG nano barium sulfates, 20KG nano-calcium carbonates add mixed at high speed pot, pre- on 120 DEG C of surfaces
Processing obtains pretreated filler in 2 minutes；
By obtained pretreated filler and 7KG low density polyethylene (LDPE)s, 15KG propylene-based elastomerics, 4KG OPEs,
1KG carbon blacks, 0.214KG antioxidant 1010s, 0.286KG irgasfos 168s are put into banbury after 160 DEG C of banburyings 8 minutes, then through double
Screw extruder is processed in 150 DEG C of mixings, extrusion, cooling, granulation.
Its material property representative value is：Melt flow index 55g/10min (190 DEG C, 2.16kg), tensile strength
1.48MPa, elongation at break 350, tearing strength is 13000N/m, and shore hardness A is 77.
The vehicle noise insulation pad material melt index melt index (MI) of the present invention reaches 50g/10min, 190 DEG C of * 2.16kg, and energy
Other physical indexs such as intensity (180-200 DEG C of injection temperature, injection pressure 80-100BAR) are met, are added with excellent shaping
Work；The product of the present invention, which can be folded continuously more than 100 times, occurs without blushing, with excellent stress-whitening resistance；
Also, the product easy mold release of the present invention, product occurs without drawing crack phenomenon when ejecting.
It can be that professional and technical personnel in the field realize or used that above-mentioned embodiment, which is intended to illustrate the present invention, to above-mentioned
Embodiment is modified and will be apparent for those skilled in the art, therefore the present invention includes but is not limited to
Above-mentioned embodiment, it is any to meet the claims or specification description, meet with principles disclosed herein and novelty,
The method of inventive features, technique, product, each fall within protection scope of the present invention.
Claims (4)
1. a kind of vehicle noise insulation pad injected plastics material, it is characterised in that be prepared from by the component of following parts by weight：5-10 parts low close
Spend polyethylene, 10-15 parts of propylene-based elastomerics, 50-70 parts of nano barium sulfates, 0-20 parts of nano-calcium carbonates, 3-5 parts of flow modifiers
Agent, 0.7-1.2 parts of carbon blacks, 0.5-2 parts of coupling agents, 0.4-0.6 parts of compound antioxidants；The flow ability modifying agent is oxidic polyethylene
Wax.
2. vehicle noise insulation pad injected plastics material according to claim 1, it is characterised in that the coupling agent is titanate esters.
3. vehicle noise insulation pad injected plastics material according to claim 1, it is characterised in that the compound antioxidant is antioxidant
1010 and irgasfos 168 compounded in 3: 4 ratios.
4. a kind of preparation method of the vehicle noise insulation pad injected plastics material as described in claim any one of 1-3, it is characterised in that including
Following steps：
A, the coupling agent and the nano barium sulfate, the nano-calcium carbonate added into mixed at high speed pot, in 80-120 DEG C of table
Face pretreatment obtains pretreated filler in 2-6 minutes；
B, by the low density polyethylene (LDPE), the propylene-based elastomeric, the flow ability modifying agent, the carbon black, the compounding resists
Oxygen agent and the pretreated filler are put into after banbury banburying, then through double screw extruder in 130-150 DEG C of mixing, extrusion, cold
But, granulation is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724829.6A CN104448882B (en) | 2014-12-04 | 2014-12-04 | A kind of vehicle noise insulation pad injected plastics material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724829.6A CN104448882B (en) | 2014-12-04 | 2014-12-04 | A kind of vehicle noise insulation pad injected plastics material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104448882A CN104448882A (en) | 2015-03-25 |
| CN104448882B true CN104448882B (en) | 2017-10-27 |
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| CN201410724829.6A Expired - Fee Related CN104448882B (en) | 2014-12-04 | 2014-12-04 | A kind of vehicle noise insulation pad injected plastics material |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111570B (en) * | 2015-07-21 | 2017-07-18 | 广西壮族自治区煤炭科学研究所 | A kind of acoustic absorption composite material and preparation method thereof |
| CN106828345B (en) * | 2015-12-07 | 2019-04-19 | 上海新安汽车隔音毡有限公司 | A kind of the automobile front wall inside sound insulating pad and its manufacturing method of multilayered structure |
| CN106317633A (en) * | 2016-08-29 | 2017-01-11 | 合肥会通新材料有限公司 | Noise-insulating filling polypropylene material for vacuum cleaner and preparation method of noise-insulating filling polypropylene material |
| CN109233082B (en) * | 2018-08-24 | 2021-04-23 | 株洲时代新材料科技股份有限公司 | Environment-friendly flame-retardant sound-insulation material and preparation method and application thereof |
| CN112954990A (en) * | 2021-01-27 | 2021-06-11 | 江门江益磁材有限公司 | Electromagnetic wave absorption sheet and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103509239B (en) * | 2012-06-27 | 2016-10-05 | 合肥杰事杰新材料股份有限公司 | A kind of scraping-resistant polypropylene material and preparation method thereof |
| CN103012970B (en) * | 2012-12-03 | 2017-02-15 | 合肥杰事杰新材料股份有限公司 | Weatherproof ageing-resistant polypropylene material and preparation method thereof |
| CN103756232B (en) * | 2013-12-27 | 2015-10-28 | 浙江伟星新型建材股份有限公司 | A kind of construction drainage pipeline polyethylene noise reduction matrix material and preparation method thereof |
| CN103756095B (en) * | 2014-01-15 | 2016-02-10 | 佛山市南方包装有限公司 | A kind of high-barrier color plastic products hindering dampness gas |
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