CN110861384A - Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core - Google Patents

Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core Download PDF

Info

Publication number
CN110861384A
CN110861384A CN201910974377.XA CN201910974377A CN110861384A CN 110861384 A CN110861384 A CN 110861384A CN 201910974377 A CN201910974377 A CN 201910974377A CN 110861384 A CN110861384 A CN 110861384A
Authority
CN
China
Prior art keywords
foam
paper core
glass fiber
honeycomb paper
embedded
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
CN201910974377.XA
Other languages
Chinese (zh)
Inventor
李国铭
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.)
LIYANG CITY SHANHU INDUSTRY Co Ltd
Original Assignee
LIYANG CITY SHANHU INDUSTRY 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 LIYANG CITY SHANHU INDUSTRY Co Ltd filed Critical LIYANG CITY SHANHU INDUSTRY Co Ltd
Priority to CN201910974377.XA priority Critical patent/CN110861384A/en
Publication of CN110861384A publication Critical patent/CN110861384A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00Layered products comprising a layer of paper or cardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00Layered products comprising a layer of paper or cardboard
    • B32B29/02Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R5/00Compartments within vehicle body primarily intended or sufficiently spacious for trunks, suit-cases, or the like
    • B60R5/04Compartments within vehicle body primarily intended or sufficiently spacious for trunks, suit-cases, or the like arranged at rear of vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/02Coating on the layer surface on fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/26Polymeric coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00Composition of foam
    • B32B2266/02Organic
    • B32B2266/0214Materials belonging to B32B27/00
    • B32B2266/0278Polyurethane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/10Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/718Weight, e.g. weight per square meter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/08Cars

Abstract

The invention discloses a PU foam embedded honeycomb paper core polyurethane spraying glass fiber reinforced composite material, which is a novel sandwich composite material manufactured by using a PU foam embedded honeycomb paper core as a support, using glass fiber felts as reinforcing materials on the upper surface and the lower surface and adopting polyurethane spraying and bonding based on a hot pressing process. The sound insulation board has the advantages of light weight, high rigidity, high dimensional stability, low VOC, flexible design freedom and excellent sound insulation and absorption performance. The composite material can be applied to the manufacture of automobile trunk cover plates, skylight plates and hat and coat racks.

Description

Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a polyurethane spraying glass fiber reinforced composite material with an embedded PU foam honeycomb paper core.
Background
At present, the materials commonly used for the automobile spare tire cover plate in China comprise a wood powder plate, a polypropylene honeycomb plate and the like, and the spare tire cover plate material is eliminated in the coming years because the weight is heavy, the bearing performance is poor, the VOC (volatile organic compounds) seriously exceeds the standard and the design is single, so that the requirements of the prior art index and the quality of the automobile by consumers are not met any more.
Under the continuous industry development thinking of high load, sound absorption, shock absorption, light weight and environmental protection, the automobile trunk cover plate is developed from the traditional hard fiberboard + carpet, medium density board + carpet, PP wood flour board + carpet, plastic blow molding + carpet to PP honeycomb board + carpet instead of being superposed all the time, and PUR + honeycomb paperboard + carpet is the latest structural process design;
the luggage flat carpet with the PUR and the honeycomb paperboard is mainly prepared by the following steps: the honeycomb paperboard body, the glass fiber felt and the foamable resin are formed, the formed body and the carpet are glued and compounded, the paper core is surrounded by the upper layer of glass fiber and the lower layer of glass fiber of the paper honeycomb board, and the paper honeycomb board is formed by foaming and pressing semi-rigid polyurethane foam, so that the weight of the part can be reduced by 20-30%, and meanwhile, the rigidity and the light weight are kept. The paper honeycomb is hollow structure in this structure, and two-layer upper and lower is the fine and polyurethane foaming's of glass compact layer for this material structure has good syllable-dividing effect, because this material lacks good sound absorbing effect of the restriction of material structure.
The car trunk is the main passageway of back wheel hub noise and exhaust noise, can spread into a large amount of noises through the trunk and reach the driver's cabin, arouses to drive fatigue, seriously influences auttombilism's travelling comfort.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polyurethane-sprayed glass fiber reinforced composite material with an embedded PU foam honeycomb paper core.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a fine reinforced combined material of embedded PU foam honeycomb refill polyurethane spraying glass from the top down, the material combination is in proper order: PU, glass fiber, honeycomb paper core + PU foam, glass fiber and PU.
The preparation method of the polyurethane spraying glass fiber reinforced composite material with the embedded PU foam honeycomb paper core comprises the following steps:
(1) the low-density sound-absorbing foam is prepared first,
(2) the framework is molded, the low-density is pressed and embedded into the stretched honeycomb paper core, PU spraying is carried out after the upper layer and the lower layer are paved with glass fibers, and finally, the glass fibers are sent into a die for hot-press molding and punching to obtain a finished product.
The low-density sound-absorbing foam is specifically implemented as follows: firstly, controlling the temperature of the component A and the component B to be 20-25 ℃, and mixing the component A and the component B according to the mixing ratio A/B of 100: 100-180, mechanically mixing for 15-25 seconds, then freely foaming in a foaming box, standing for 1 day after foaming is finished, and machining and slicing to obtain the low-density PU foam sheet.
The specific implementation mode of the framework molding is as follows:
a. setting the temperature of the honeycomb paper core at 100 +/-10 ℃ through a paper core drawing machine, setting the drawing speed at 2m/min, drawing, drying and shaping, and cutting according to the required size;
b. laying the prepared low-density PU foam sheet on the cut honeycomb paper core, putting the low-density PU foam sheet into a flat pressing mould, dividing the mould into an upper mould and a lower mould, setting the gap of a mould closing mould to be the thickness of the paper core, setting the pressure of a hydraulic press to be 10 +/-2 MPa, and pressing to prepare the honeycomb paper core embedded with the PU foam;
c. laying chopped glass fiber mats on the upper layer and the lower layer of the prepared honeycomb paper core, wherein the gram weight of the glass fiber mats is generally selected to be 300-500g/m according to the strength requirement of the product2
d. The honeycomb plate laid with the glass fiber felt is grabbed by a six-axis robot provided with a special grabbing tool, sent into the upper surface and the lower surface of a spraying room provided with a high-pressure foaming machine with a special grade, and sprayed with PU according to a programmed track, wherein the spraying flow is generally set to be 35-50g/s, and the single-surface spraying amount is generally 350-plus-material 500g/m2After spraying, the mixture is sent into a product mold by a robot for mold pressing, the temperature of the mold is controlled to be 120 +/-10 ℃ through oil heating, and the mold pressing pressure is set as follows: 15-20MPa, and the dwell time is 80 +/-10 seconds.
The low-density sound-absorbing PU foam is prepared by foaming a component A and a component B, and the density of the polyurethane foam is 15 +/-3 kg/m3Wherein the hydroxyl value of the polyether polyol of the component A is 120 plus or minus 10mgKOH/g, the viscosity at 25 ℃ is 650 plus or minus 100mPa.s, the NCO content of the isocyanate of the component B is 25 plus or minus 1 percent, and the viscosity is 25 MPa.The viscosity at the temperature of 400 +/-100 mPa.s, and the prepared foam has uniform density, good air permeability and good sound absorption performance.
The invention has the beneficial effects that:
the invention relates to a product with a PU foam honeycomb paper core embedded and a polyurethane spraying glass fiber reinforced composite material structure, which is a latest process structure used for a cover plate of an automobile trunk at present and is a product material process developed by a PUR + honeycomb material structure in the previous generation; the structure successfully utilizes the mechanical property characteristics of a sandwich structure, fully exerts the advantage of increasing the rigidity of the plate by the thickness and reduces the weight of the product to the greatest extent; under the condition of equal rigidity, the weight of PHC spare tyre cover board is 1/3 of wood powder board, is 1/2 of polypropylene honeycomb panel and GMT paper honeycomb composite sheet, and the weight of car can be lightened by 2Kg only single product, owing to embedded low density sound absorption PU foam in honeycomb core hexagon structure for this material structure has concurrently fine sound insulation, inhales the sound performance, simultaneously owing to the PU foam density of embedding is low, makes this structure still have the light high rigidity performance of original structure.
Drawings
FIG. 1 is a schematic structural view of a polyurethane spray-coated glass fiber reinforced composite material with an embedded PU foam honeycomb paper core according to the present invention. Labeled as: 1. PU; 2. glass fiber; 3. a honeycomb paper core; 4. PU foam
Detailed Description
Example 1
The utility model provides a fine reinforced combined material of embedded PU foam honeycomb refill polyurethane spraying glass from the top down, the material combination is in proper order: PU, glass fiber, honeycomb paper core + PU foam, glass fiber and PU.
The preparation method of the polyurethane spraying glass fiber reinforced composite material with the embedded PU foam honeycomb paper core comprises the following steps:
(1) the low-density sound-absorbing foam is prepared first,
(2) the framework is molded, the low-density is pressed and embedded into the stretched honeycomb paper core, PU spraying is carried out after the upper layer and the lower layer are paved with glass fibers, and finally, the glass fibers are sent into a die for hot-press molding and punching to obtain a finished product.
The low-density sound-absorbing foam is specifically implemented as follows: firstly, controlling the temperature of the component A and the component B at 20 ℃, and mixing the component A and the component B according to the mixing ratio A/B of 100: 100, mechanically mixing for 15 seconds, then freely foaming in a foaming box, standing for 1 day after foaming, and machining and slicing to obtain the low-density PU foam sheet.
The specific implementation mode of the framework molding is as follows:
a. setting the temperature of the honeycomb paper core at 90 ℃ through a paper core drawing machine, setting the drawing speed at 2m/min, drawing, drying and shaping, and cutting according to the required size;
b. laying the prepared low-density PU foam sheet on the cut honeycomb paper core, putting the low-density PU foam sheet into a flat pressing mould, dividing the mould into an upper mould and a lower mould, setting the gap of a mould closing mould to be the thickness of the paper core, setting the pressure of a hydraulic press to be 8MPa, and pressing to prepare the honeycomb paper core embedded with the PU foam;
c. laying chopped glass fiber mats on the upper layer and the lower layer of the prepared honeycomb paper core, wherein the gram weight of the glass fiber mats is generally selected to be 300g/m according to the strength requirement of a product2
d. The honeycomb plate laid with the glass fiber felt is grabbed by a six-axis robot provided with a special grabbing tool, sent into the upper surface and the lower surface of a spraying room provided with a high-pressure foaming machine with a special grade, and sprayed with PU according to a programmed track, wherein the spraying flow is generally set at 35g/s, and the single-side spraying amount is generally 350g/m2And after spraying, the mixture is sent into a product mold by a robot for mold pressing, the temperature of the mold is controlled at 110 ℃ by oil heating, and the mold pressing pressure is set as follows: 15MPa, and the dwell time is 70 seconds.
The low-density sound-absorbing PU foam is prepared by foaming a component A and a component B, and the density of the polyurethane foam is 15 +/-3 kg/m3Wherein the hydroxyl value of the polyether polyol of the component A is 110mgKOH/g, the viscosity at 25 ℃ is 550mPa.s, the NCO content of the isocyanate of the component B is 24%, the viscosity at 25 ℃ is 300mPa.s, and the prepared foam has uniform density, good air permeability and good sound absorption performance.
Example 2
The utility model provides a fine reinforced combined material of embedded PU foam honeycomb refill polyurethane spraying glass from the top down, the material combination is in proper order: PU, glass fiber, honeycomb paper core + PU foam, glass fiber and PU.
The preparation method of the polyurethane spraying glass fiber reinforced composite material with the embedded PU foam honeycomb paper core comprises the following steps:
(1) the low-density sound-absorbing foam is prepared first,
(2) the framework is molded, the low-density is pressed and embedded into the stretched honeycomb paper core, PU spraying is carried out after the upper layer and the lower layer are paved with glass fibers, and finally, the glass fibers are sent into a die for hot-press molding and punching to obtain a finished product.
The low-density sound-absorbing foam is specifically implemented as follows: firstly, controlling the temperature of the component A and the component B at 25 ℃, and mixing the component A and the component B according to the mixing ratio A/B of 100: 180, mechanically mixing for 25 seconds, then freely foaming in a foaming box, standing for 1 day after foaming, and machining and slicing to obtain the low-density PU foam sheet.
The specific implementation mode of the framework molding is as follows:
a. setting the honeycomb paper core at 110 ℃ and 2m/min by a paper core drawing machine, drawing, drying and shaping, and cutting according to the required size;
b. laying the prepared low-density PU foam sheet on the cut honeycomb paper core, putting the low-density PU foam sheet into a flat pressing mould, dividing the mould into an upper mould and a lower mould, setting the gap of a mould closing mould to be the thickness of the paper core, setting the pressure of a hydraulic press to be 12MPa, and pressing to prepare the honeycomb paper core embedded with the PU foam;
c. laying chopped glass fiber mats on the upper layer and the lower layer of the prepared honeycomb paper core, wherein the gram weight of the glass fiber mats is generally selected to be 300-500g/m according to the strength requirement of the product2
d. The honeycomb plate laid with the glass fiber felt is grabbed by a six-axis robot provided with a special grabbing tool, sent into the upper surface and the lower surface of a spraying room provided with a high-pressure foaming machine with a special grade, and sprayed with PU according to a programmed track, wherein the spraying flow is generally set at 50g/s, and the single-side spraying amount is generally 500g/m2After spraying, the mixture is sent into a product mold by a robot for mold pressing, the temperature of the mold is controlled at 130 ℃ by oil heating, and the mold pressing pressure is set as follows: 20MPa, and the dwell time is 90 seconds.
The low-density sound-absorbing PU foam is prepared by foaming a component A and a component B, and the density of the polyurethane foam is 18kg/m3, Wherein the hydroxyl value of the polyether polyol of the component A is 130mgKOH/g, the viscosity at 25 ℃ is 750mPa.s, the NCO content of the isocyanate of the component B is 26%, the viscosity at 25 ℃ is 500mPa.s, and the prepared foam has uniform density, good air permeability and good sound absorption performance.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a fine reinforced combined material of embedded PU foam honeycomb refill polyurethane spraying glass, its characterized in that, combined material from the top down, material composition is in proper order: PU, glass fiber, honeycomb paper core + PU foam, glass fiber and PU.
2. The preparation method of the PU foam-embedded honeycomb paper core polyurethane spraying glass fiber reinforced composite material of claim 1 comprises the following steps:
(1) the low-density sound-absorbing foam is prepared first,
(2) the framework is molded, the low-density is pressed and embedded into the stretched honeycomb paper core, PU spraying is carried out after the upper layer and the lower layer are paved with glass fibers, and finally, the glass fibers are sent into a die for hot-press molding and punching to obtain a finished product.
3. The preparation method of the polyurethane spray-coated glass fiber reinforced composite material with the embedded PU foam honeycomb paper core according to claim 2, wherein the concrete implementation modes of the low-density sound-absorbing foam are as follows: firstly, controlling the temperature of the component A and the component B to be 20-25 ℃, and mixing the component A and the component B according to the mixing ratio A/B of 100: 100-180, mechanically mixing for 15-25 seconds, then freely foaming in a foaming box, standing for 1 day after foaming is finished, and machining and slicing to obtain the low-density PU foam sheet.
4. The preparation method of the PU foam-embedded honeycomb paper core polyurethane spraying glass fiber reinforced composite material according to claim 2, wherein the specific implementation manner of the skeleton molding is as follows:
a. setting the temperature of the honeycomb paper core at 100 +/-10 ℃ through a paper core drawing machine, setting the drawing speed at 2m/min, drawing, drying and shaping, and cutting according to the required size;
b. laying the prepared low-density PU foam sheet on the cut honeycomb paper core, putting the low-density PU foam sheet into a flat pressing mould, dividing the mould into an upper mould and a lower mould, setting the gap of a mould closing mould to be the thickness of the paper core, setting the pressure of a hydraulic press to be 10 +/-2 MPa, and pressing to prepare the honeycomb paper core embedded with the PU foam;
c. laying chopped glass fiber mats on the upper layer and the lower layer of the prepared honeycomb paper core, wherein the gram weight of the glass fiber mats is generally selected to be 300-500g/m according to the strength requirement of the product2
d. The honeycomb plate laid with the glass fiber felt is grabbed by a six-axis robot provided with a special grabbing tool, sent into the upper surface and the lower surface of a spraying room provided with a high-pressure foaming machine with a special grade, and sprayed with PU according to a programmed track, wherein the spraying flow is generally set to be 35-50g/s, and the single-surface spraying amount is generally 350-plus-material 500g/m2After spraying, the mixture is sent into a product mold by a robot for mold pressing, the temperature of the mold is controlled to be 120 +/-10 ℃ through oil heating, and the mold pressing pressure is set as follows: 15-20MPa, and the dwell time is 80 +/-10 seconds.
5. The method for preparing the PU foam-embedded honeycomb paper core polyurethane spraying glass fiber reinforced composite material of claim 2, wherein the low-density sound-absorbing PU foam is prepared by foaming the component A and the component B, and the density of the polyurethane foam is 15 +/-3 kg/m3Wherein the hydroxyl value of the polyether polyol of the component A is 120 plus or minus 10mgKOH/g, the viscosity at 25 ℃ is 650 plus or minus 100mPa.s, the content of NCO in isocyanate of the component B is 25 plus or minus 1 percent, and the viscosity at 25 ℃ is 400 plus or minus 100 mPa.s.
CN201910974377.XA 2019-10-14 2019-10-14 Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core Pending CN110861384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910974377.XA CN110861384A (en) 2019-10-14 2019-10-14 Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910974377.XA CN110861384A (en) 2019-10-14 2019-10-14 Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core

Publications (1)

Publication Number Publication Date
CN110861384A true CN110861384A (en) 2020-03-06

Family

ID=69652630

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910974377.XA Pending CN110861384A (en) 2019-10-14 2019-10-14 Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core

Country Status (1)

Country Link
CN (1) CN110861384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111516353A (en) * 2020-04-21 2020-08-11 扬州市邗江扬子汽车内饰件有限公司 Lightweight one-step molded automotive interior part and molding method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111516353A (en) * 2020-04-21 2020-08-11 扬州市邗江扬子汽车内饰件有限公司 Lightweight one-step molded automotive interior part and molding method thereof

Similar Documents

Publication Publication Date Title
US8231817B2 (en) Process for the production of a three-dimensionally shaped sandwich structure
CN101618698A (en) Automotive interior roof and production method thereof
CN103707592A (en) Car engine compartment insulation mat and preparation method
CN107187157A (en) A kind of composite and the method that automobile spare tire lid is prepared using the composite
CN110861384A (en) Polyurethane spraying glass fiber reinforced composite material with embedded PU foam honeycomb paper core
EP1878568B1 (en) Roof liner and procedure for obtaining a roof liner for vehicles
US20140030470A1 (en) High-Strength, Light-Weight, Molded Polymer Articles and Method of Manufacture
CN201446929U (en) Automobile interior trim ceiling
CN104002879A (en) Automobile spare tire cover plate and processing process and processing device thereof
KR20170138099A (en) The Multilayer Units Comprising Natural Combination Material
CN110861370A (en) PU core polyurethane spraying glass fiber reinforced composite material
EP1531116A2 (en) Method for producing a reinforcing and soundproofing panel for vehicule roofs, reinforcing member obtained from such method and use of a two component polyurethane compound for producing said reinforcing member
CN102501505A (en) Compound type automobile interior trim and preparation method thereof
CN104071091B (en) A kind of automobile enhancement mode car roof soundproof pad of multiple structure and preparation method thereof
CN101337526B (en) Wet process technique of PU flexible foam top-liner
KR20190117938A (en) Headliner for vehicle
CN206170757U (en) Automobile -used suitcase spare tyre cover of top load
KR20190027521A (en) Under pad of floor carpet for vehicle and manufacturing method therof
US20060194034A1 (en) Method for the production of fiber composites and fiber composite produced according to said method
CN209141606U (en) It is a kind of it is novel can integrally recycle, the low VOC cover plate of spare tire of automobile of loop production
CN106218150A (en) A kind of new type passenger car floor and preparation method thereof
CN211307772U (en) High performance PP blowing suitcase carpet apron
CN106183133B (en) A kind of top load luggage case for automobile spare tire cover plate and preparation method thereof
CN102152593B (en) Roof sound insulating pad-roof stiffening beam and preparation method thereof
CN209888317U (en) Trunk cover plate

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination