CN106633635A - Foaming composition and cavity structure reinforcing structure - Google Patents
Foaming composition and cavity structure reinforcing structure Download PDFInfo
- Publication number
- CN106633635A CN106633635A CN201610978713.4A CN201610978713A CN106633635A CN 106633635 A CN106633635 A CN 106633635A CN 201610978713 A CN201610978713 A CN 201610978713A CN 106633635 A CN106633635 A CN 106633635A
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- Prior art keywords
- cavity
- composition
- foam
- parts
- foaming
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Classifications
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- 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
- C08J9/08—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 carbon dioxide
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
-
- 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
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
Abstract
The invention provides a foaming composition and a cavity structure reinforcing structure. The foaming composition comprises the following components in parts by weight: 60-85 parts of epoxy resins, 5-15 parts of amine curing agents, 5-20 parts of a foaming agent, 0.2-2 parts of graphene, 0.5-5 parts of an antioxidant and 0.2-0.8 part of a silane coupling agent. The invention further provides a cavity structure reinforcing structure. The method specifically comprises the following steps: arranging a carbon fiber felt in a cavity; injecting the foaming composition into the cavity; keeping the temperature of the foaming composition to be 110-150 DEG C for 10-30 minutes. According to the foaming composition provided by the invention, the automobile cavity can be effectively filled and reinforced, and the NVH and safety performance of the automobile are improved.
Description
Technical field
The present invention relates to a kind of composition, foam and the enhanced method of cavity structure, belong to expanded material technical field.
Background technology
NVH (Noise, Vibration&Harshness, noise, the vibration and sound vibration roughness) performances of automobile and safety
Performance is to weigh the integrated technology index of Hyundai Motor manufacture level, because there are some cavitys in body of a motor car, such as threshold, front
Enclose, gusset etc., cavity can transmit engine noise, blast pipe noise, the noise of wind and tire noise etc..Work as galloping
When, these cavitys can form High Speed Airflow Within, produce noise and vibration.
In order to prevent noise and vibration, common resolving ideas are that metal buffer layer and noise reduction are arranged in automobile cavity
Layer, or in cavity the material such as filling sponge or film intercepting air flow.But metal buffer layer and noise reduction layer density
It is larger, increase the weight of body of a motor car.Although filling sponge or film can realize vibration and noise reducing in bodywork cavity,
Its humidification to cavity structure is not obvious, can not truly improve the NVH performances of automobile.
The content of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of composition, foam, by epoxy resin solidifying system
Middle addition foaming agent and Graphene, make the composition, foam can be used in the filling of cavity structure and strengthen.
Present invention also offers a kind of enhanced method of cavity structure, using above-mentioned composition, foam, in cavity structure
Define with carbon fiber felt-cloth as enhancement layer, the epoxy resin solidifying system with foam structure strengthens compound for the foaming of skeleton
Material, the foaming strengthens composite can be filled and realize the enhancing of cavity structure to cavity structure.
The present invention provides a kind of composition, foam, including the component of following weight portion:
Epoxy resin 60-85 parts, amine curing agent 5-15 parts, foaming agent 5-20 parts, Graphene 0.2-2 parts, antioxidant
0.5-5 parts, silane coupler 0.2-0.8 parts.
Specifically, viscosity of the above-mentioned composition, foam at 20-30 DEG C is 500-1000Pas, and above-mentioned viscosity is conducive to
Composition, foam is injected into cavity, such as at room temperature composition, foam can be injected into vapour in the way of spraying (injection)
In car cavity.
Specifically, the blowing temperature of above-mentioned composition, foam is 110-150 DEG C, to ensure just can at a lower temperature
The solidification and expansion of above-mentioned composition, foam are realized, beneficial to filling cavity structure.
The present invention is not specifically limited to the epoxy resin in composition, foam, can select asphalt mixtures modified by epoxy resin commonly used in the art
Fat, such as bisphenol A type epoxy resin, bisphenol f type epoxy resin or bisphenol-s epoxy resin, it is contemplated that contain in composition, foam
There is graphite olefinic constituent, its specific surface area is very big, easily the viscosity of increase composition, foam, therefore preferably liquid-state epoxy resin
The liquid-state epoxy resin of (also known as liquid epoxies), the especially viscosity at 20-30 DEG C less than 1000Pas.It is logical
Often select more general liquid bisphenol A type epoxy resin, such as bisphenol A-type E44 (E44 bisphenol A epoxide resins), bisphenol A-type
E51 (E51 bisphenol A epoxide resins).
Amine curing agent is widely used as the organic polyamine class compound of epoxy curing agent, and the present invention is to amine curing agent
It is not specifically limited, as long as it is adapted to the epoxy resin in composition, foam, can select aliphatic commonly used in the art
The amine curing agents such as the derivative of polyamine, aromatic polyamine or amine, such as can for 3 diethyl aminopropylamine, or
Other conventional amine curing agents of this area.
Epoxy resin and amine curing agent crosslink at a suitable temperature solidification, generate netted or three-dimensional-structure ring
Oxygen resin curing system.
Antioxidant (also referred to as antioxidant) can suppress the oxidative degradation of epoxy resin solidifying system, extend epoxy resin
The service life of curing system.Generally select the Hinered phenols antioxidant of pollution-free, efficiency high and applied range, such as antioxygen
Other are conventional for agent 1010, i.e., four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, or this area
Epoxy resin antioxidant.
Foaming agent can select physical blowing agent, generally select carbonate foaming agent, such as can be calcium carbonate, carbonic acid
One or more in magnesium and sodium acid carbonate, during epoxy resin and amine curing agent crosslink solidification, foaming agent
Heated decomposition discharges the gases such as carbon dioxide, expands epoxy resin solidifying system, obtains with foam structure
Epoxy resin solidifying system.
Inventor's research finds that the Graphene content in raising composition, foam can improve epoxy resin solidifying system
Intensity and heat resistance, but if Graphene too high levels, the intensity of epoxy resin solidifying system and heat resistance change are all failed to understand
It is aobvious, in actual production process, it is usually added into 0.6-2 parts by weight of graphite alkene, such as 0.6-1.2 weight portions, it becomes possible to ensure ring
Oxygen resin curing system has preferable intensity and heat resistance.
Silane coupler is a class in the molecule simultaneously containing the organo-silicon compound of two kinds of different chemical property groups, sheet
Invention does not make considered critical to silane coupler, can select the conventional silane coupler in this area, such as the ethoxy of γ-aminopropyl three
Base silane, or from the silane coupler of two categories below chemical general formula:R-Si(OR1)3And RR2-Si (OR1)2, wherein, R is
Hydrogen atom, methyl, ethyl, propyl group (including n-propyl and isopropyl), butyl are (including normal-butyl, sec-butyl, isobutyl group and tertiary fourth
Base), phenyl, cyclohexyl, vinyl, acrylic, aminoethylaminopropyl, mercaptopropyi, anilinomethyl, R1 is methyl or ethyl,
R2 is hydrogen atom, methyl or ethyl.In the specific embodiment of the present invention, the addition of silane coupler is generally 0.2-
0.6 weight portion.
Composition, foam in the present invention, it is not necessary to the forming method such as conventional extrusion, injection, it is only necessary to by said ratio
Each component be well mixed by obtain, appropriate solvent can be added if necessary, be well mixed not only can each component, and
The viscosity of composition, foam can be adjusted.
The present invention also provides a kind of cavity structure enhanced method, including:
Carbon fiber felt-cloth is arranged in cavity;
Above-mentioned composition, foam is injected in cavity;
Above-mentioned composition, foam is incubated into 10-30min at 110-150 DEG C.
Before composition, foam injection cavity, carbon fiber felt-cloth should be arranged in cavity first, this area can be adopted
Conventional method is arranged, and the present invention does not make considered critical to this, specifically can typically arrange two-layer according to the size of cavity structure
To four layers of carbon fiber felt-cloth.
Carbon fiber felt-cloth arrange into it is rear, can using the spraying mode such as (injection), by composition, foam injection cavity, than
Such as can be by the way of Control During Paint Spraying by Robot, to improve injection efficiency.Specific quantity for spray can according to cavity volume size adjustment,
It is general to use 20-40kg composition, foams per cubic meter volume.
The above-mentioned process being incubated to composition, foam, actual is exactly the foaming process of composition, foam, can be passed through
Cavity structure is toasted, the solidification temperature of epoxy resin and amine curing agent, and the heat decomposition temperature of foaming agent is reached.
Now, epoxy resin crosslinks solidification with amine curing agent, and expansion is stretched under the gas effect that foaming agent is discharged, directly
Complete to solidification, form the epoxy resin solidifying system with foam structure, be filled part or all of cavity structure.
Because above-mentioned epoxy resin solidifying system tool itself is a bit sticky, it not only has good with cavity inner wall
Adhesiveness, and with the carbon fiber felt-cloth strong bonded of advance arrangement in cavity.Also, in the presence of silane coupler, ring
Combination between oxygen resin curing system and carbon fiber felt-cloth is more firm.
Above-mentioned cavity structure, especially refers to the cavity structure of body of a motor car.
The present invention also provides a kind of foaming strengthens composite, is that above-mentioned composition, foam is being disposed with into carbon fiber felt-cloth
Cavity in obtain through foaming.
The foaming strengthen composite be with carbon fiber felt-cloth as enhancement layer, the epoxy resin cured body with foam structure
It is for skeleton, good adhesion to be defined to cavity structure with filling such that it is able to which sealing is played a part of to cavity structure, with
Air flow is intercepted, noise is reduced, the NVH performances of automobile are improved;Also, due to the foaming strengthen composite have it is certain
Intensity such that it is able to the enhanced effect of structure is played to cavity, is applied in the cavity of body of a motor car, can be significantly improved
The bending stiffness and torsional rigidity of automobile, lifts the security performance of automobile.
The invention provides a kind of composition, foam, by adding foaming agent and graphite in epoxy resin solidifying system
Alkene, makes composition, foam can be used in the filling of cavity structure and strengthen.The composition, foam has suitable viscosity so as to make
With and operate it is all more convenient.
Present invention also offers a kind of enhanced method of cavity structure and foaming strengthen composite, using above-mentioned foaming group
Compound, finally defines with carbon fiber felt-cloth as enhancement layer in cavity, and the epoxy resin solidifying system with foam structure is
The foaming of skeleton strengthens composite, the filling of automobile cavity is realized, so as to improve the NVH performances of automobile;Also, it is above-mentioned
Foaming strengthens composite can also significantly improve the bending stiffness and torsional rigidity of body of a motor car, it is achieved thereby that cavity structure
Enhancing, improve the security performance of automobile.Also, the enhanced method and step of the cavity structure is simple, it is easy to operation and enforcement.
Description of the drawings
Fig. 1 is the schematic flow sheet of the enhanced method of cavity structure provided in an embodiment of the present invention.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below will be in the embodiment of the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Embodiment 1
The composition, foam of the present embodiment includes following components:
Bisphenol A-type E44:600g, 3 diethyl aminopropylamine:40g, NaHCO3:100g, Graphene:6g, antioxidant 1010:
10g, gamma-aminopropyl-triethoxy-silane:4g.
Each component is weighed according to above-mentioned quality, after being sufficiently stirred for, composition, foam is obtained, it is at 20-30 DEG C
Viscosity is 500-1000Pas.
Embodiment 2
The composition, foam of the present embodiment includes following components:
Bisphenol A-type E51:600g, 3 diethyl aminopropylamine:50g, NaHCO3:150g, Graphene:6g, antioxidant 1010:
10g, gamma-aminopropyl-triethoxy-silane:4g.
Each component is weighed according to above-mentioned quality, after being sufficiently stirred for, composition, foam is obtained, it is at 20-30 DEG C
Viscosity is 500-1000Pas.
Embodiment 3
A kind of enhanced method of cavity structure, refer to Fig. 1, including:
Two-layer carbon fiber felt-cloth is arranged in the cavity of certain brand automobile vehicle body;
By the way of Control During Paint Spraying by Robot, by the composition, foam injection cavity in embodiment 1, every cubic metre of cavity is noted
The composition, foam quality for entering is 20kg or so;
Above-mentioned cavity is toasted, in the case where temperature is for 115 DEG C 25 minutes or so are incubated, that is, complete the cavity entirety of body of a motor car
Filling, obtaining foaming strengthens composite.
Through test, according to the method described above after the cavity structure to body of a motor car strengthens, the bending of body of a motor car
The durable correlated performance of the structures such as rigidity, torsional rigidity, and the NVH performances of automobile have lifting.
Embodiment 4
A kind of enhanced method of cavity structure, as shown in figure 1, including:
Four layers of carbon fiber felt-cloth are arranged in the cavity of certain brand automobile vehicle body;
By the way of Control During Paint Spraying by Robot, by the composition, foam injection cavity in embodiment 2, every cubic metre of cavity is noted
The composition, foam quality for entering is 40kg or so;
Above-mentioned cavity is toasted, in the case where temperature is about 145 DEG C 15 minutes or so are incubated, that is, complete the overall filling of cavity, obtained
Strengthen composite to foaming.
Through test, according to the method described above after the cavity structure to body of a motor car strengthens, the bending of body of a motor car
The durable correlated performance of the structures such as rigidity, torsional rigidity, and the NVH performances of automobile have lifting.
Finally it should be noted that:Above example only to illustrate technical scheme, rather than a limitation;Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that:It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic;
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. a kind of composition, foam, it is characterised in that including the component of following weight portion:
Epoxy resin 60-85 parts, amine curing agent 5-15 parts, foaming agent 5-20 parts, Graphene 0.2-2 parts, antioxidant 0.5-5
Part, silane coupler 0.2-0.8 parts.
2. composition, foam according to claim 1, it is characterised in that the composition, foam is viscous at 20-30 DEG C
Spend for 500-1000Pas.
3. composition, foam according to claim 1 and 2, it is characterised in that the blowing temperature of the composition, foam is
110-150℃。
4. the composition, foam according to any one of claim 1-3, it is characterised in that the foaming agent is the foaming of carbonic acid class
Agent.
5. the composition, foam according to any one of claim 1-3, it is characterised in that the weight portion of the Graphene is
0.6-2 parts.
6. a kind of enhanced method of cavity structure, it is characterised in that include:
Carbon fiber felt-cloth is arranged in cavity;
By in the composition, foam injection cavity described in any one of claim 1-5;
Above-mentioned composition, foam is incubated into 10-30min at 110-150 DEG C.
7. method according to claim 6, it is characterised in that injection composition, foam 20-40kg in every cubic metre of cavity.
8. the method according to claim 6 or 7, it is characterised in that the cavity for body of a motor car cavity.
9. a kind of foaming strengthens composite, it is characterised in that be that the composition, foam described in any one of claim 1-5 exists
It is disposed with the cavity of carbon fiber felt-cloth and is obtained through foaming.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107512010A (en) * | 2017-08-14 | 2017-12-26 | 芜湖博康新材料技术有限公司 | A kind of production technology of automobile composite floor board part |
CN107599441A (en) * | 2017-08-17 | 2018-01-19 | 芜湖博康新材料技术有限公司 | A kind of production technology of automobile rear wall |
CN107599444A (en) * | 2017-09-06 | 2018-01-19 | 芜湖博康新材料技术有限公司 | A kind of production technology of automobile engine cover |
CN107599447A (en) * | 2017-08-17 | 2018-01-19 | 芜湖博康新材料技术有限公司 | A kind of automobile left front door outside plate and its production technology |
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CN105694363A (en) * | 2016-02-02 | 2016-06-22 | 江苏同盟汽车零部件实业有限公司 | Preparation technique of functional structural foam material for automobile cavities |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107512010A (en) * | 2017-08-14 | 2017-12-26 | 芜湖博康新材料技术有限公司 | A kind of production technology of automobile composite floor board part |
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CN107599447A (en) * | 2017-08-17 | 2018-01-19 | 芜湖博康新材料技术有限公司 | A kind of automobile left front door outside plate and its production technology |
CN107599444A (en) * | 2017-09-06 | 2018-01-19 | 芜湖博康新材料技术有限公司 | A kind of production technology of automobile engine cover |
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