CN106916271A - A kind of automobile PUR material engine bonnet parts and preparation method - Google Patents

A kind of automobile PUR material engine bonnet parts and preparation method Download PDF

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Publication number
CN106916271A
CN106916271A CN201510988161.0A CN201510988161A CN106916271A CN 106916271 A CN106916271 A CN 106916271A CN 201510988161 A CN201510988161 A CN 201510988161A CN 106916271 A CN106916271 A CN 106916271A
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CN
China
Prior art keywords
pur
automobile
engine bonnet
shape
graphite powder
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
Application number
CN201510988161.0A
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Chinese (zh)
Inventor
高翠梅
高云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Xinan Auto Soundproof Blanket Co Ltd
Original Assignee
Shanghai Xinan Auto Soundproof Blanket Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Xinan Auto Soundproof Blanket Co Ltd filed Critical Shanghai Xinan Auto Soundproof Blanket Co Ltd
Priority to CN201510988161.0A priority Critical patent/CN106916271A/en
Publication of CN106916271A publication Critical patent/CN106916271A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5816—Measuring, controlling or regulating temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00—Manufacture of cellular products
    • 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
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • 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

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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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention relates to a kind of automobile PUR material engine bonnet parts, the shape of the part matches with the shape of automobile engine cover, and the foamed PUR materials for obtaining of mixture by isocyanates, graphite powder, polyethers are hot-forming prepared.Compared with prior art, the present invention has and is matched with engine bonnet, the advantages of easy to install.

Description

A kind of automobile PUR material engine bonnet parts and preparation method
Technical field
The present invention relates to a kind of auto parts, more particularly, to a kind of automobile PUR materials engine bonnet zero Part and preparation method.
Background technology
Engine bonnet part is important bodywork component, is often checked in day conventional car of vehicle buyer One of part, will not only accomplish that heat-insulating sound-insulating, density be small, rigidity is good to it, and to accomplish hood The authority match of lid, the engine bonnet part of current automobile industry, mostly using flat pure PET materials, Because it is flat structure, its material it is least big cause it is big with engine housing type face difference so that The structure matching of remaining engine bonnet is very undesirable, and this can produce stress during installation so that It is not easy to install, and loosening is easily produced in the follow-up use of vehicle or abnormal sound, and this material occur The soundproof effect of material is also bad, influences riding quality.
The content of the invention
The purpose of the present invention is exactly to provide a kind of structure for the defect for overcoming above-mentioned prior art to exist Prepare, automobile PUR material engine bonnet parts and preparation method easy to install.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of automobile PUR material engine bonnet parts, shape and the automobile engine cover of the part Shape matches, by isocyanates, graphite powder, polyethers the foamed PUR material hot pressing for obtaining of mixture Shaping is obtained.
The weight ratio of described isocyanates, graphite powder and polyethers is (30~40):(1~5):(55~69).
The nco value of described isocyanates is 25~35.
The particle diameter of described graphite powder is 100~500 μm.
A kind of automobile preparation method of PUR material engine bonnet parts, the method is comprised the following steps：
(1) preparation of PUR materials：
Be uniformly mixed according to a ratio for graphite powder and polyethers by (1-1),
The mixture that (1-2) will be obtained in isocyanates and step (1-1) is added in foaming machine by proportioning, Control temperature for 20~30 DEG C, cure 2~2.5h, that is, obtain described PUR materials,
The PUR material cut into serving pieces that (1-3) will be obtained after foaming；
(2) it is hot-forming：
Be put into PUR materials after section in mould by (2-1), controls mold temperature for 180~220 DEG C, 130~170bar of pressure, suppresses 30s~120s,
(2-2) cooling and shaping, controls chilling temperature for room temperature, cool time 30s~120s.
Described cooling and shaping is carried out on cooling frame, and the shape of cooling frame is according to engine bonnet part Shape process.By the cooling frame, the deformation of material in cooling procedure can be avoided.
The species of isocyanates has a major impact to the cell size of PUR materials, toughness and density, the present invention Isocyanates from nco value between 25~35, can obtain that good toughness, density is small, cell size PUR materials that are homogeneous and being evenly distributed.
Polyethers is larger on the influence of the inspiration speed of the foaming of PUR materials, while also to cell size, material Toughness and density have an impact.
Graphite powder is added in the present invention can play fire retardation, but graphite powder is added too much, to material Structural behaviour destruction is larger so that its intensity and toughness decline, and more graphite powder can also cause abscess Shape and homogeneity be deteriorated.The particle of graphite powder is excessive also to produce harmful effect, the present invention to foaming Addition cause that the good toughness of material, intensity are appropriate, cell size is homogeneous and is evenly distributed.
Compared with prior art, the present invention has advantages below：
(1) using hot-forming so that the PUR materials match with the shape of engine bonnet, easily Install, so as to overcome part shape of the prior art and the unmatched problem of engine bonnet shape, and Also cause that the stress of inside parts fully discharges, and places the cooling of part in cooling procedure during hot-forming The shape of frame is processed according to the shape of part so that the structural behaviour of part is more stablized.
(2) material of main part that the present invention is used is the isocyanates of foaming, and density is small, lightweight, and Foam structure also causes that changing material plays the role of to absorb sound well, is conducive to sound insulation.
(3) to cause that the material has the advantages that by the graphite powder of addition of the invention nonflammable.
(4) interaction of three kinds of materials of isocyanates of the present invention, graphite powder and polyethers causes the present invention Intensity it is high, graphite powder also causes the part in black, and perception effect is good.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of automobile PUR material engine bonnet parts, the shape of the part and the engine bonnet of automobile Shape match, by isocyanates, graphite powder, polyethers mixture it is foamed obtain PUR materials heat Molded to be obtained, wherein isocyanates, graphite powder, the weight ratio of polyethers are 35:1:64.The particle of graphite powder Size is about 300 μm, and the nco value of isocyanates is 30.
The automobile preparation method of PUR material engine bonnet parts, comprises the following steps：
(1) preparation of PUR materials：
Be uniformly mixed according to a ratio for graphite powder and polyethers by (1-1),
The mixture that (1-2) will be obtained in isocyanates and step (1-1) is added in foaming machine by proportioning, Control temperature for 25 DEG C, cure 2h, that is, obtain described PUR materials,
The PUR material cut into serving pieces that (1-3) will be obtained after foaming；
(2) it is hot-forming：
Be put into PUR materials after section in mould by (2-1), controls mold temperature for 200 DEG C, Pressure 150bar, suppresses 60s,
(2-2) cooling and shaping, controls chilling temperature for room temperature, and cool time carries out cooling and shaping for 60s.
The cooling of mould is carried out on cooling frame, the shape of the shape of cooling frame according to engine bonnet part Shape is processed.
Embodiment 2
A kind of automobile PUR material engine bonnet parts, the shape of the part and the engine bonnet of automobile Shape match, by isocyanates, graphite powder, polyethers mixture it is foamed obtain PUR materials heat Molded to be obtained, wherein isocyanates, graphite powder, the weight ratio of polyethers are 30:3:67, the particle of graphite powder Size is about 100 μm, and the nco value of isocyanates is 25.
The automobile preparation method of PUR material engine bonnet parts, comprises the following steps：
(1) preparation of PUR materials：
Be uniformly mixed according to a ratio for graphite powder and polyethers by (1-1),
The mixture that (1-2) will be obtained in isocyanates and step (1-1) is added in foaming machine by proportioning, Control temperature for 30 DEG C, cure 2h, that is, obtain described PUR materials；
The PUR material cut into serving pieces that (1-3) will be obtained after foaming；
(2) it is hot-forming：
Be put into PUR materials after section in mould by (2-1), controls mold temperature for 195 DEG C, Pressure 170bar, suppresses 30s；
(2-2) cooling and shaping, controls chilling temperature for room temperature, and cool time carries out cooling and shaping for 2min.
The cooling of mould is carried out on cooling frame, the shape of the shape of cooling frame according to engine bonnet part Shape is processed.
Embodiment 3
A kind of automobile PUR material engine bonnet parts, the shape of the part and the engine bonnet of automobile Shape match, by isocyanates, graphite powder, polyethers mixture it is foamed obtain PUR materials heat Molded to be obtained, wherein isocyanates, graphite powder, the weight ratio of polyethers are 40:5:55, the particle of graphite powder Size is about 500 μm, and the nco value of isocyanates is 35.
The automobile preparation method of PUR material engine bonnet parts, comprises the following steps：
(1) preparation of PUR materials：
Be uniformly mixed according to a ratio for graphite powder and polyethers by (1-1),
The mixture that (1-2) will be obtained in isocyanates and step (1-1) is added in foaming machine by proportioning, Control temperature for 20 DEG C, cure 2.2h, that is, obtain described PUR materials；
The PUR material cut into serving pieces that (1-3) will be obtained after foaming；
(2) it is hot-forming：
Be put into PUR materials after section in mould by (2-1), controls mold temperature for 180 DEG C, Pressure 130bar, suppresses 120s；
(2-2) cooling and shaping, controls chilling temperature for room temperature, and cool time carries out cooling and shaping for 30s.
The cooling of mould is carried out on cooling frame, the shape of the shape of cooling frame according to engine bonnet part Shape is processed.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, and difference is, isocyanates in the present embodiment, Graphite powder, the weight ratio of polyethers are 30:1:69.

Claims (6)

1. a kind of automobile PUR material engine bonnet parts, it is characterised in that the shape of the part with The shape of automobile engine cover matches, foamed by the mixture of isocyanates, graphite powder, polyethers The PUR materials for arriving are hot-forming prepared.
2. a kind of automobile according to claim 1 PUR material engine bonnet parts, its feature It is that the weight ratio of described isocyanates, graphite powder and polyethers is (30~40):(1~5):(55~69).
3. a kind of automobile according to claim 1 and 2 PUR material engine bonnet parts, its It is characterised by, described isocyanates nco value is 25~35.
4. a kind of automobile according to claim 1 and 2 PUR material engine bonnet parts, its It is characterised by, the particle diameter of described graphite powder is 100~500 μm.
5. the preparation side of PUR material engine bonnet parts of a kind of automobile as described in Claims 1 to 4 Method, it is characterised in that the method is comprised the following steps：
(1) preparation of PUR materials：
Be uniformly mixed according to a ratio for graphite powder and polyethers by (1-1),
The mixture that (1-2) will be obtained in isocyanates and step (1-1) is added in foaming machine by proportioning, Control temperature for 20~30 DEG C, cure 2~2.5h, that is, obtain described PUR materials,
The PUR material cut into serving pieces that (1-3) will be obtained after foaming；
(2) it is hot-forming：
Be put into PUR materials after section in mould by (2-1), controls mold temperature for 180~220 DEG C, 130~170bar of pressure, suppresses 30s~120s,
(2-2) cooling and shaping, controls chilling temperature for room temperature, cool time 30s~120s.
6. a kind of automobile according to claim 5 preparation side of PUR material engine bonnet parts Method, it is characterised in that described cooling and shaping is carried out on cooling frame, the shape of cooling frame is according to hair The shape of motivation hood feature is processed.
CN201510988161.0A 2015-12-24 2015-12-24 A kind of automobile PUR material engine bonnet parts and preparation method Pending CN106916271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510988161.0A CN106916271A (en) 2015-12-24 2015-12-24 A kind of automobile PUR material engine bonnet parts and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510988161.0A CN106916271A (en) 2015-12-24 2015-12-24 A kind of automobile PUR material engine bonnet parts and preparation method

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CN106916271A true CN106916271A (en) 2017-07-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111961333A (en) * 2020-08-30 2020-11-20 宁波耀众模塑科技有限公司 Preparation formula of polyurethane foaming product based on graphite material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1593896A (en) * 2004-06-25 2005-03-16 中国重型汽车集团有限公司 Engine hood processing technology
CN101191011A (en) * 2006-11-30 2008-06-04 井上株式会社 Polyurethane foam for vehicle and method for manufacturing the same
CN102529839A (en) * 2010-12-23 2012-07-04 上海新安汽车隔音毡有限公司 Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof
CN103182810A (en) * 2011-12-28 2013-07-03 上海新安汽车隔音毡有限公司 Composite layer type sound and heat insulation pad for engine compartment
CN104177581A (en) * 2013-05-27 2014-12-03 拜耳材料科技(中国)有限公司 Polyurethane composition for polyurethane composite material
CN104530375A (en) * 2014-10-31 2015-04-22 扬中市天正合成材料研究中心 Environment-friendly high-flame-retardant automotive engine hood composite material and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1593896A (en) * 2004-06-25 2005-03-16 中国重型汽车集团有限公司 Engine hood processing technology
CN101191011A (en) * 2006-11-30 2008-06-04 井上株式会社 Polyurethane foam for vehicle and method for manufacturing the same
CN102529839A (en) * 2010-12-23 2012-07-04 上海新安汽车隔音毡有限公司 Multilayer-structure sound-proof and heat-proof cushion used for automotive engine cabin and manufacture method thereof
CN103182810A (en) * 2011-12-28 2013-07-03 上海新安汽车隔音毡有限公司 Composite layer type sound and heat insulation pad for engine compartment
CN104177581A (en) * 2013-05-27 2014-12-03 拜耳材料科技(中国)有限公司 Polyurethane composition for polyurethane composite material
CN104530375A (en) * 2014-10-31 2015-04-22 扬中市天正合成材料研究中心 Environment-friendly high-flame-retardant automotive engine hood composite material and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111961333A (en) * 2020-08-30 2020-11-20 宁波耀众模塑科技有限公司 Preparation formula of polyurethane foaming product based on graphite material

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Application publication date: 20170704