CN114536879A - Micro-nano colloidal fiber coagulation structure and processing method thereof - Google Patents

Micro-nano colloidal fiber coagulation structure and processing method thereof Download PDF

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Publication number
CN114536879A
CN114536879A CN202210265353.9A CN202210265353A CN114536879A CN 114536879 A CN114536879 A CN 114536879A CN 202210265353 A CN202210265353 A CN 202210265353A CN 114536879 A CN114536879 A CN 114536879A
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micro
colloid
nano
fiber
coagulation structure
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龚炜
过海龙
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Wuxi Jixing Auto Acoustic Parts Technology Co Ltd
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Wuxi Jixing Auto Acoustic Parts Technology Co Ltd
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Priority to CN202210265353.9A priority Critical patent/CN114536879A/en
Publication of CN114536879A publication Critical patent/CN114536879A/en
Priority to PCT/CN2022/118609 priority patent/WO2023173707A1/en
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Abstract

The invention discloses a micro-nano colloid fiber coagulation structure which comprises a micro-nano colloid and a fiber bundle layer, wherein the micro-nano colloid is a three-dimensional structure formed by overlapping a plurality of colloid bone beams, a colloid containing space is formed between the colloid bone beams, the colloid bone beams can collapse and deform after being heated and pressed, glue for keeping the micro-nano colloid in a deformed shape after being cooled and solidified is filled in the colloid containing space, and the fiber bundle layer is used as a supporting framework and penetrates through the micro-nano colloid. The micro-nano colloidal fiber concrete structure is similar to reinforced concrete, and the overall rigidity is greatly increased, so that splicing is not needed when products with multiple R angles and negative angles are formed, splicing seams are reduced, the appearance integrity is improved, more modeling requirements can be met, more importantly, the structure can be effectively controlled in material weight, the lightweight improvement is realized while the mechanical strength is ensured, and a new forming material is provided for interior and exterior ornaments of an automobile. The invention also discloses a processing method of the micro-nano colloidal fiber coagulation structure.

Description

Micro-nano colloidal fiber coagulation structure and processing method thereof
Technical Field
The invention relates to the technical field of automobile ornaments, in particular to a micro-nano colloidal fiber concrete structure and a processing method thereof, which are applied to automobile non-steel structural members.
Background
With the rapid development of the automobile industry, people have high requirements on the comfort, functionality and noise resistance of internal and external decorations, as well as the attractive appearance of the automobile. The automobile interior and exterior trim parts are gradually developed to be light in weight on the premise of meeting mechanical and NVH performance requirements, such as a ceiling, a tail door trim part, a stand column base material, a lower stand column, an automobile body and the like, and the light material can effectively reduce automobile fuel, so that energy conservation and environmental protection are realized.
Generally, plastic particles are selected for injection molding of automobile pillars and other hard decorations and are molded as a whole, but the complex appearance shape and the large-curved surface decoration performance of the product are also required to be realized, the pillars and other hard decorations are required to be mechanically spliced due to the limitation of the existing process, gaps are left at the splicing positions, and the requirements of the appearance shape and the decoration performance are difficult to meet.
Based on the existing materials and structural considerations, it is generally difficult to achieve both light weight and mechanical strength, and there are limitations on shape and thickness, which make it difficult to meet higher requirements for use in vehicles.
Disclosure of Invention
Based on the problems, the invention aims to provide a micro-nano colloidal fiber coagulation structure, which is a high-density, high-mechanical-strength and light material so as to meet the light production requirements of interior and exterior trimming parts of automobiles.
The invention also aims to provide a processing method of the micro-nano colloidal fiber coagulation structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a micro-nano colloid fiber coagulation structure comprises micro-nano colloids and a fiber bundle layer, wherein the micro-nano colloids are of a three-dimensional structure formed by overlapping a plurality of colloid bone beams, glue containing spaces are formed between the colloid bone beams, the colloid bone beams can collapse and deform after being heated and pressed, glue in which the micro-nano colloids keep deformed shapes after being cooled and solidified is filled in the glue containing spaces, and the fiber bundle layer penetrates through the micro-nano colloids as a supporting framework.
Particularly, the micro-nano colloid comprises a plurality of unit sheet layers, the unit sheet layers are of a honeycomb net structure, and the unit sheet layers are stacked in a staggered mode, so that the colloid bone beam of the previous unit sheet layer is located in the area of the glue containing space of the next unit sheet layer.
Particularly, the micro-nano colloid is PU sponge.
Particularly, the fiber bundle layer is formed by overlapping a plurality of fiber bundles in a staggered manner, the fiber bundles are formed by fiber yarn untwisted constraint, and the fiber bundles are fixed by glue after hot pressing and during condensation.
Particularly, a plurality of fiber bundle layers are laid in the micro-nano colloid in parallel up and down at intervals.
Particularly, the upper surface and the lower surface of the micro-nano colloid are correspondingly adhered with surface cloth and base cloth.
Particularly, the base fabric is of a three-layer composite structure and comprises non-woven fabric, PP and CPP from bottom to top, the PP layer is used for blocking glue, and the CPP layer is easy to melt and plays a role in bonding.
On the other hand, the invention adopts the following technical scheme:
a processing method of a micro-nano colloidal fiber coagulation structure aims at the micro-nano colloidal fiber coagulation structure and comprises the following steps:
rolling the PU soft foam, spraying water, and attaching glass fibers to two side surfaces of the PU soft foam;
laying base fabric, a plurality of PU soft bubbles, glass fiber and surface cloth from bottom to top;
and (3) adopting a cold material hot die form, feeding the layered and laid material into a pressing die, carrying out hot press molding, and finally cooling to obtain a product with a target structure.
Specifically, the pressing die adopts an oil heating mode, so that the upper temperature and the lower temperature of the die are set to be (130 +/-10) ° C, the pressure maintaining time is (50 +/-5) s, the pressure maintaining pressure is 15MPa, the exhaust time is 5s, and the exhaust pressure is 10 MPa.
Particularly, in the PU soft foam, the ratio of glue to water is 1 (0.6-0.8), and the total glue amount is set to be (440 +/-40) g/m2The water amount is set to (300 +/-30) g/m2。
In conclusion, the micro-nano colloid fiber reinforced concrete structure and the processing method thereof have the advantages that a material similar to a reinforced concrete structure can be obtained, the integral rigidity is greatly increased, splicing is not needed when a product with multiple R angles and negative angles is formed, splicing seams are reduced, the appearance integrity is improved, more modeling requirements can be met, more importantly, the structure is effectively controlled in material weight, the mechanical strength is guaranteed, the lightweight improvement is realized, and a novel forming material is provided for automobile interior and exterior ornaments.
Drawings
Fig. 1 is a schematic diagram of a micro-nano colloidal fiber coagulation structure provided by an embodiment of the invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a microscopic view of micro-nano colloids in a micro-nano colloidal fiber coagulation structure provided by an embodiment of the invention;
FIG. 4 is a schematic diagram of a unit slice of the micro-nano colloid in FIG. 3;
fig. 5 is a schematic diagram of a laminated paving material in a processing method of a micro-nano colloidal fiber coagulation structure provided by an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 4, the preferred embodiment provides a micro-nano colloid fiber coagulation structure, which includes a micro-nano colloid 1, a fiber bundle layer 2, a surface cloth 3 and a base cloth 4, wherein the micro-nano colloid 1 is a three-dimensional structure formed by overlapping a plurality of colloid bone beams 11, a glue accommodating space 12 is formed between the colloid bone beams 11, the colloid bone beams 11 collapse and deform after being heated and pressed, the glue accommodating space 12 is filled with glue 5 which enables the micro-nano colloid 1 to maintain a deformed shape after being cooled and solidified, the fiber bundle layer 2 penetrates through the micro-nano colloid 1 as a supporting framework, and the surface cloth 3 and the base cloth 4 are respectively attached to the upper surface and the lower surface of the micro-nano colloid 1.
The micro-nano colloid 1 (or called micro-nano colloid hot-pressing condensate) is defined as an object formed by a material absorbed with glue after being processed by a hot-pressing die process, and although a layered structure with an obvious boundary is formed before hot pressing, the processed object is just like the relationship between concrete and a reinforcing steel bar serving as a framework inside. The currently practicable material is PU sponge, and essentially any object can contain glue, collapse during hot pressing and solidify and shape after cooling.
If the micro-nano colloid 1 is sliced microscopically, the micro-nano colloid 1 comprises a plurality of unit sheet layers 13, the unit sheet layers 13 preferably have a honeycomb net structure, and the unit sheet layers 13 are stacked in a staggered mode, so that the colloid bone beam 11 of the previous unit sheet layer 13 is positioned in the area of the colloid accommodating space 12 of the next unit sheet layer 13, and the micro-nano colloid 1 is convenient to collapse and deform.
The fiber bundle layer 2 is used as a framework support micro-nano colloid 1 and is formed by overlapping a plurality of fiber bundles 21 in a staggered mode, the fiber bundles 21 are formed by fiber yarn untwisted constraint and are fixed by glue 5 after hot pressing and during condensation. Furthermore, a plurality of fiber bundle layers 2 are laid in the micro-nano colloid 1 in parallel up and down at intervals.
The advantage of forming the fiber bundle 21 without twisting is that the fiber filaments inside the fiber bundle 21 are not connected with each other, so that the fiber bundle can be freely bent during hot pressing to form various shaped ornaments.
The glue 5 has the main functions of keeping the micro-nano colloid 1 in the shape after collapse and deformation after cooling and solidification, avoiding resilience, and fixing fiber yarns during condensation after hot pressing so that the fiber bundle layer 2 keeps the shape. The main components of glue 5 here are isocyanate prepolymer and polyol.
In the structure, the surface layer is preferably a non-woven fabric and a fiber bundle layer 2, the middle layer is preferably a micro-nano colloid 1 and a fiber bundle layer 2, and the bottom layer is preferably a coated non-woven fabric and a fiber bundle layer 2.
The base fabric 4 is preferably of a three-layer composite structure, which comprises non-woven fabric, PP and CPP from bottom to top, wherein the melting point of the CPP layer is about 100 ℃, and the CPP layer can be melted during hot pressing to play a role in bonding and help the bottom layer to be bonded with the central layer; and the PP layer can not be melted and is mainly used for blocking glue.
To this end, the embodiment further provides a processing method of the micro-nano colloidal fiber coagulation structure, which includes the following steps:
1) and (3) carrying out glue rolling and water spraying treatment on the PU soft foam 14, and attaching glass fibers to two side surfaces of the PU soft foam 14.
Wherein, in the PU soft foam 14, the proportion of the glue and the water is 1 (0.6-0.8), and the total glue amount is set as (440 +/-40) g/m2The water amount is set to (300 +/-30) g/m2。
2) The base fabric 4, a plurality of PU soft bubbles 14, the glass fiber and the surface fabric 3 are laid from bottom to top.
Here, the base fabric 4, the glass fiber A, PU soft bubble 14, the glass fiber B, PU soft bubble 14, the glass fiber A, and the top fabric 3 are laminated, as shown in FIG. 5, and are adjusted according to different kinds of interior and exterior parts and shapes thereof.
Wherein the parameters of the materials are as follows: surface cloth 3: 40g/m spunlace nonwoven fabric2(ii) a Glass fiber A (100 +/-10) g/m2(ii) a Glass fiber B (150 +/-10) g/m2(ii) a PU soft foam 14: polyether 35kg/m33.2 mm; base fabric 4: is free ofWoven cloth 40g/m250g/m PP film2(containing CPP 22g/m2)。
3) And (3) adopting a cold material hot die form, feeding the layered and laid material into a pressing die, carrying out hot press molding, and finally cooling to obtain a product with a target structure.
Wherein, the pressing mould adopts an oil heating mode, the upper temperature and the lower temperature of the mould are set to be (130 +/-10) ° C, the pressure maintaining time is (50 +/-5) s, the pressure maintaining pressure is 15MPa, the exhaust is carried out for 1 time, the exhaust time is 5s, and the exhaust pressure is 10 MPa.
In conclusion, the micro-nano colloidal fiber reinforced concrete structure and the processing method thereof can obtain a material similar to a reinforced concrete structure, and the integral rigidity is greatly increased, so that splicing is not needed when a product with multiple R angles and negative angles is formed, splicing seams are reduced, the appearance integrity is improved, more modeling requirements can be met, more importantly, the structure can be effectively controlled in material weight, the mechanical strength is ensured, the lightweight improvement is realized, and a new forming material is provided for automobile interior and exterior ornaments.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the invention, which are intended to be within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a receive colloid fibre coagulation structure a little, its characterized in that, including receiving colloid and fibre bundle layer a little, receive the colloid a little for the spatial structure that is formed by the overlap joint of a plurality of colloid bone roof beam, and form between the colloid bone roof beam and hold gluey space, the colloid bone roof beam can take place to collapse after receiving hot pressing and warp, it is filled with the glue that makes receive the colloid a little and keep the deformation shape after the cooling solidifies to hold gluey space, fibre bundle layer as support skeleton run through in receiving the colloid a little.
2. The micro-nano colloidal fiber coagulation structure according to claim 1, characterized in that: the micro-nano colloid comprises a plurality of unit sheet layers, each unit sheet layer is of a honeycomb net structure, and each unit sheet layer is stacked in a staggered mode, so that the colloid bone beam of the previous unit sheet layer is located in the area of the colloid containing space of the next unit sheet layer.
3. The micro-nano colloidal fiber coagulation structure according to claim 1, characterized in that: the micro-nano colloid is PU sponge.
4. The micro-nano colloidal fiber coagulation structure according to claim 1, characterized in that: the fiber bundle layer is formed by overlapping a plurality of fiber bundles in a staggered manner, the fiber bundles are formed by fiber yarn untwisted constraint, and the fiber bundles are fixed by glue after hot pressing and during condensation.
5. The micro-nano colloidal fiber coagulation structure according to claim 1, characterized in that: and a plurality of fiber bundle layers are laid in the micro-nano colloid in an up-down parallel manner at intervals.
6. The micro-nano colloidal fiber coagulation structure according to claim 1, characterized in that: the upper surface and the lower surface of the micro-nano colloid are correspondingly adhered with surface cloth and base cloth.
7. The micro-nano colloidal fiber coagulation structure according to claim 6, wherein: the base fabric is of a three-layer composite structure and comprises non-woven fabric, PP (polypropylene) and CPP (casting polypropylene) from bottom to top, the PP layer is used for blocking glue, and the CPP layer is easy to melt and plays a role in bonding.
8. A processing method of a micro-nano colloidal fiber coagulation structure, which aims at the micro-nano colloidal fiber coagulation structure of any one of claims 1 to 7, and is characterized by comprising the following steps:
rolling the PU soft foam, spraying water, and attaching glass fibers to two side surfaces of the PU soft foam;
laying base fabric, a plurality of PU soft bubbles, glass fiber and surface cloth from bottom to top;
and (3) adopting a cold material hot die form, feeding the layered and laid material into a pressing die, carrying out hot press molding, and finally cooling to obtain a product with a target structure.
9. The processing method of the micro-nano colloidal fiber coagulation structure according to claim 8, characterized in that: the pressing die adopts an oil heating mode, so that the upper temperature and the lower temperature of the die are set to be (130 +/-10) ° C, the pressure maintaining time is (50 +/-5) s, the pressure maintaining pressure is 15MPa, the exhaust time is 5s, and the exhaust pressure is 10 MPa.
10. The processing method of the micro-nano colloidal fiber coagulation structure according to claim 8, characterized in that: in the PU soft foam, the proportion of glue and water is 1 (0.6-0.8), the total glue quantity is set to be (440 +/-40) g/square meter, and the water quantity is set to be (300 +/-30) g/square meter.
CN202210265353.9A 2022-03-17 2022-03-17 Micro-nano colloidal fiber coagulation structure and processing method thereof Pending CN114536879A (en)

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