CN214266937U - High-peeling-force and anti-aging composite skin - Google Patents
High-peeling-force and anti-aging composite skin Download PDFInfo
- Publication number
- CN214266937U CN214266937U CN202022519882.6U CN202022519882U CN214266937U CN 214266937 U CN214266937 U CN 214266937U CN 202022519882 U CN202022519882 U CN 202022519882U CN 214266937 U CN214266937 U CN 214266937U
- Authority
- CN
- China
- Prior art keywords
- layer
- sponge
- flame
- composite
- woven fabric
- 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.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to a high peel force, ageing-resistant compound epidermis mainly solves and has among the prior art when car door plant is with compound epidermis peel force high, can not satisfy the problem that ageing resistance is good, the smell is low simultaneously. The utility model adopts a new composite skin with high stripping force and aging resistance, and comprises a PVC layer 1, a sponge layer 2 and a non-woven fabric layer 3 from top to bottom in sequence; one side of the PVC layer 1 is in flame composite fit with one side of the PU sponge layer 2, and the PVC is polyvinyl chloride artificial leather; the PU sponge layer 2 is polyurethane flame composite sponge; the technical scheme that the non-woven fabric layer 3 is selected from one of spunlace non-woven fabrics, needle-punched non-woven fabrics or spun-bonded non-woven fabrics well solves the problem, and can be used in the application of composite skins for automobile door panels.
Description
Technical Field
The utility model relates to a high peel force, ageing-resistant compound epidermis.
Background
The sponge in the composite skin of the interior trim of the existing automobile door panel usually adopts polyester type sponge or polyether type sponge, and the index requires that the sponge is 40-60 kg/m3At density, the peel force of the composite material at normal state is not less than 10N/5 cm. When the polyester type PU sponge is used, PVC and non-woven fabrics can be directly attached in a flame composite processing mode, the physical performance of the polyester type PU sponge is superior, but the aging resistance of the polyester type PU sponge is poor, the related mechanical properties (tensile strength and elongation at break) of the polyester type PU sponge can be reduced by 40-50% under the conditions of high temperature and high humidity, and meanwhile, the polyester type PU sponge needs to be foamed by high-pressure equipment, so that the requirement on a foaming process is high, and the cost is high; because of high requirements on the foaming process, defective products are easily generated, and the product yield is low. When the polyether sponge is used, flame complexing agent is required to be added, PVC and non-woven fabric are bonded in a flame complexing processing mode, the polyether sponge has good aging resistance, and related mechanical properties of the polyether sponge are basically not greatly influenced under high-temperature and high-humidity conditions; however, the polyether sponge needs to have a relatively large amount of flame retardant to generate a peeling force meeting the requirement after being attached, and the flame retardant contains a large amount of small molecular substances which are easy to volatilize, so that the produced sponge has a large smell and a high total VOC (volatile organic compound),affecting the environment in the vehicle.
With the continuous development of the consumption level, people have higher and higher requirements on the performance of the automotive interior material; due to the large climate difference in the four seasons of the world, the requirements on the storage conditions and the climate adaptability of automobiles are higher and higher. Therefore, the requirements of the sponge material can meet the requirements of peeling force, good aging resistance and low odor.
The ageing resistance of polyurethane sponges is evaluated in the prior art, and the polyurethane sponges are usually subjected to moist heat ageing for 200 hours at 90 ℃ and (100-6)% relative humidity and then to tensile strength and elongation at break tests in accordance with DIN EN ISO 1798: 2008.
The odor test standard can be evaluated according to the odor grade of PV 3900-2000, the odor grade is divided into 1 to 6 grades, and the lower the grade is, the lower the odor is; among them, grade 3 is "clear odor but still without interference", grade 3.5 is "odor but without interference", grade 4.0 is "clear odor and not objectionable", grade 4.0 is "interfering odor and objectionable", and grade 4.5 is "strong interfering odor".
Chinese utility model patent CN201520081065.3 discloses a flame composite sponge, including the sponge body, this internal complex of sponge has the netted lamella of multilayer, and the sponge body upper surface and lower surface have respectively through flame complex to weave the cloth layer and weave the cloth layer down, go up to weave the cloth layer and weave the cloth layer periphery down and be equipped with bordures, netted lamella is net cloth, gauze or steel wire cloth, the sponge body is formed by polyether, reaction type flame retardant and polyisocyanate foaming. The utility model discloses in, compound sponge is polyether type's polyurethane sponge, need add the compound auxiliary agent of a large amount of flames during the flame is compound just can satisfy the requirement of peeling off power, and the smell that leads to the sponge that the preparation obtained is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, when having the compound epidermis to peel off the dynamic height for car door plant among the prior art, can not satisfy the problem that ageing-resistant performance is good, the smell is low simultaneously, provide a new high peel force, ageing-resistant compound epidermis, this compound epidermis has the advantage of excellent ageing-resistant performance, low smell simultaneously when can having higher peel force.
In order to solve the technical problem, the utility model discloses a technical scheme as follows: the composite skin with high peeling force and aging resistance is characterized by sequentially comprising a PVC layer 1, a PU sponge layer 2 and a non-woven fabric layer 3 from top to bottom; wherein the content of the first and second substances,
one side of the PVC layer 1 is in composite fit with one side of the PU sponge layer 2 through flame; PVC is polyvinyl chloride artificial leather;
the PU sponge layer 2 is polyurethane flame composite sponge; the other side of the PU sponge layer 2 is attached to one side of the non-woven fabric layer 3 through a flame compounding process;
the non-woven fabric layer 3 is selected from one of spunlace non-woven fabric, needle-punched non-woven fabric or spun-bonded non-woven fabric.
In the technical scheme, preferably, the aged polyurethane flame composite sponge has the tensile strength of 150-200 Kpa and the elongation at break of not less than 200%; after aging for 200 hours under the conditions of 90 ℃ and (100-6)% relative humidity, the tensile strength is 120-160 Kpa, and the elongation at break is not less than 160%.
In the above technical scheme, preferably, the polyurethane flame composite sponge is composed of a component I and a component II, the weight part ratio of the component I to the component II is 100: 20-60, wherein the component I comprises polyether polyol a in parts by weight: 30-60 parts of polyether polyol B: 30-60 parts of polymer polyol C: 10-40 parts of water: 1-5 parts of amine catalyst: 0.1-1 part of tin catalyst: 0.1-1 part of foam stabilizer: 0.5-2 parts of a flame retardant: 2-12 parts of flame complexing agent: 0.5-5 parts; the component II comprises 20-60 parts of isocyanate in parts by weight; wherein the molecular weight of the polyether polyol A is 1000-3000, the unsaturation degree is 0.01-0.2 mmol/g, and the functionality degree is 2-4; the polyether polyol B has the molecular weight of 1300-2800, the unsaturation degree of 0.01-0.2 mmol/g and the functionality of 2-4, wherein the polyether polyol B is polyether polyol containing an ester bond structure, small molecular alcohol is used as an initiator of the polyether polyol B, the polyether polyol B is formed by copolymerizing alkylene oxide and small molecular organic acid, and the ester bond content of the polyether polyol B is 3-15% in percentage by weight; the molecular weight of the polymer polyol C is 4000-7000, the functionality is 2-4, and the solid content is 28% -50%; the isocyanate is at least one of 2, 6-dimethylphenyl diisocyanate or 2, 4-dimethylphenyl diisocyanate.
In the above technical solution, preferably, the preparation method of the polyurethane flame composite sponge includes the following steps:
1) preparation of polyether polyol B: (1) reacting 100 parts by weight of small molecular alcohol with 500-900 parts by weight of alkylene oxide to form low molecular polyether polyol, wherein the reaction time is 6-10 hours, and the reaction temperature is 100-120 ℃; (2) carrying out polymerization reaction on 100 parts of the low-molecular-weight polyether polyol prepared in the step 1 and 50-150 parts by weight of small-molecular-weight organic acid to form polyol I, wherein the reaction time is 4-8 h and the reaction temperature is 110-130 ℃; (3) reacting 100 parts of the polyol I prepared in the step 2 with 50-200 parts by weight of alkylene oxide to form polyether polyol B, wherein the reaction time is 6-10 hours, and the reaction temperature is 110-135 ℃;
2) preparation of component I: adding polyether polyol A into a container A according to parts by weight: 30-60 parts of polyether polyol B: 30-60 parts of polymer polyol C: 10-40 parts of water: 1-5 parts of amine catalyst: 0.1-1 part of tin catalyst: 0.1-1 part of foam stabilizer: 0.5-2 parts of a flame retardant: 2-12 parts of flame complexing agent: 0.5-5 parts of the raw materials are uniformly stirred, the stirring speed is 2000-3000 rpm/min, and the temperature of the mixed materials is 20-30 ℃;
3) preparation of component II: adding 20-60 parts by weight of isocyanate into the container A, and stirring for 4-6 seconds to obtain a material I, wherein the stirring speed is 2000-4000 rpm/min;
4) and (3) quickly pouring the material I into a foaming box for curing for 10-72 hours, and preparing the polyurethane flame composite sponge after curing.
In the above technical solution, preferably, the thickness of the PVC layer 1 is 0.8-1.3 mm.
In the above technical scheme, preferably, the thickness of the PU sponge layer 2 is 2-8 mm.
In the above technical solution, preferably, the thickness of the non-woven fabric layer 3 is 0.1 to 0.6 mm.
The utility model provides a high peel force, ageing-resistant composite epidermis carries out the flame laminating through the compound sponge of polyurethane flame and PVC layer and the non-woven fabrics layer that uses novel material, because the compound sponge of novel polyurethane flame has ether linkage and ester bond, can all have the characteristics of polyester type sponge and polyether type sponge. When the flame-bonding agent is used for flame-bonding leather and non-woven fabrics, the prepared composite skin has higher peeling force (the peeling force is 15.5N/5cm) only by adding a small amount of flame-bonding agent; meanwhile, the polyurethane flame composite sponge is simple to prepare, excellent in aging resistance (the tensile strength is 200N before aging, the elongation at break is 220%, the tensile strength is 160N after aging, the elongation at break is 180%), low in odor (grade 3.7), high in material yield, low in cost and good in technical effect.
Drawings
FIG. 1 is a schematic representation of a high peel force, aging resistant composite skin.
In the attached figure 1, 1 is a PVC layer, 2 is a PU sponge layer, and 3 is a non-woven fabric layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
[ example 1 ]
A high-stripping-force and anti-aging composite skin sequentially comprises a PVC layer 1 (with the thickness of 1.1mm), a polyurethane flame composite sponge layer 2 (with the thickness of 3mm) and a spunlace non-woven fabric layer 3 (with the thickness of 0.3mm) from top to bottom, wherein the PVC layer 1 and the non-woven fabric layer 3 are respectively attached to the polyurethane flame composite sponge layer 2 through a flame composite process.
The preparation method of the polyurethane flame composite sponge comprises the following steps:
polyether polyol a 1: molecular weight 2000, unsaturation 0.01mmol/g, functionality 2;
polyether polyol B1, wherein the molecular weight is 1400, the unsaturation degree is 0.011mmol/g, the functionality is 2, and the ester bond content of the polyether polyol B is 7.6 percent by weight;
polymer polyol C1: the molecular weight is 6000, the functionality is 3, and the solid content is 45%;
a) preparation of component I: adding polyether polyol A1 into a container A according to parts by weight: 30 parts of polyether polyol B1: 50 parts, polymer polyol C1: 20 parts of water: 2.25 parts, dimethylbenzylamine: 0.17 parts, diethyl cyclohexylamine, 0.18 parts, dibutyltin dilaurate: 0.12 part, SI-2302: 0.7 part, YK-68 LE: 5 parts, FLE-200 LF: 1.5 parts of the raw materials are uniformly stirred, the stirring speed is 2500rpm/min, and the temperature of the mixed materials is 25 ℃;
b) preparation of component II: adding 28 parts by weight of a mixture of 80% by weight of 2, 4-dimethylphenyl diisocyanate and 20% by weight of 2, 6-dimethylphenyl diisocyanate into a container A, and stirring for 6 seconds to obtain a material I, wherein the stirring speed is 3000 rpm/min;
c) and (3) quickly pouring the material I into a foaming box for curing for 48 hours, and preparing the polyurethane flame composite sponge after curing. The physical properties of the polyurethane flame-compounded sponge layer are shown in table 1, and the skin quality detection data after flame compounding is shown in table 2.
[ example 2 ]
A high-stripping-force and anti-aging composite skin comprises a PVC layer 1 (with the thickness of 1.2mm), a polyurethane flame composite sponge layer 2 (with the thickness of 3mm) and a spunlace non-woven fabric layer 3 (with the thickness of 0.4mm) from top to bottom in sequence; the PVC layer 1 and the non-woven fabric layer 3 are respectively attached to the polyurethane flame composite sponge layer 2 through a flame composite process.
The preparation method of the polyurethane flame composite sponge refers to example 1, the formula of each component is not changed, but 2.0 parts of flame composite agent FLE-200LF is added; the physical properties of the polyurethane flame-compounded sponge layer are shown in table 1, and the skin quality detection data after flame compounding is shown in table 2.
[ COMPARATIVE EXAMPLE 1 ]
A composite skin comprises, from top to bottom, a PVC layer (thickness 1.2mm), a polyester PU sponge layer (thickness 3mm), and a needle-punched non-woven fabric (thickness 0.3 mm); the PVC layer and the non-woven fabric layer are respectively attached to the polyester type PU sponge through a flame compounding process. The physical properties of the polyester PU sponge layer are shown in Table 1, and the skin quality detection data after flame compounding is shown in Table 2.
[ COMPARATIVE EXAMPLE 2 ]
A composite skin comprises, from top to bottom, PVC (thickness 1.2mm), polyether type PU sponge (thickness 3mm), and spunlace nonwoven (thickness 0.3 mm); the PVC layer and the non-woven fabric layer are respectively attached to the polyether type PU sponge through a flame compounding process. The physical properties of the polyether type PU sponge layer are shown in Table 1, and the skin quality detection data after flame compounding is shown in Table 2.
TABLE 1 physical Properties of PU sponge layers in examples 1 to 2 and comparative examples 1 to 2
The testing standards of the tensile strength and the elongation at break of the PU sponge layer are DIN EN ISO 1798: 2008; the aging condition is humid heat aging at 90 deg.C and (100-6)% relative humidity for 200 h.
TABLE 2 quality test data of composite skins of examples 1 to 2 and comparative examples 1 to 2
The detection standard and method for the aging resistance test of the composite epidermis are VW TL 496: 2016/specimen was aged at (90. + -. 2) ° C and (98. + -. 2)% relative humidity for 216 hours and then evaluated.
The test standard and method for peel force testing is climate change according to PV 2005. The sample width is 50mm, the length is 200mm, 10 blocks of warp and weft are respectively used for testing the stripping strength after climate alternation, and the stripping test method is DIN 53357 and 2003.
As can be seen from table 2, the composite skins prepared by flame lamination using the novel polyurethane flame laminated sponge have the advantages and characteristics of both the polyether polyurethane sponge and the polyester polyurethane sponge, and the examples 1 and 2 have the peeling force meeting the requirements of the door panel under the condition of using the same flame laminating agent as the polyether polyurethane sponge; compared with polyester polyurethane sponge, the polyurethane sponge has better aging resistance, and after aging, the tensile strength and the elongation at break are reduced by 20% compared with those under the conventional condition; the utility model discloses a better technological effect has been gained in the application of car door plant interior trim to compound epidermis.
Claims (4)
1. The composite skin with high peeling force and aging resistance is characterized by sequentially comprising a PVC layer (1), a PU sponge layer (2) and a non-woven fabric layer (3) from top to bottom; wherein the content of the first and second substances,
a) one surface of the PVC layer (1) is in composite fit with one surface of the PU sponge layer (2) through flame; PVC is polyvinyl chloride artificial leather;
b) the PU sponge layer (2) is polyurethane flame composite sponge; the other side of the PU sponge layer (2) is attached to one side of the non-woven fabric layer (3) through a flame compounding process; the tensile strength of the polyurethane flame composite sponge is 150-200 Kpa, and the elongation at break is not less than 200%;
c) the non-woven fabric layer (3) is selected from one of spunlace non-woven fabric, needle-punched non-woven fabric or spun-bonded non-woven fabric.
2. The high peel force, aging resistant composite skin according to claim 1, characterized in that the thickness of the PVC layer (1) is 0.8-1.3 mm.
3. The high peel force, aging resistant composite skin according to claim 1, wherein the thickness of the PU sponge layer (2) is 2-8 mm.
4. The high peel force, aging resistant composite skin of claim 1, wherein the thickness of the nonwoven layer (3) is 0.1-0.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022519882.6U CN214266937U (en) | 2020-11-04 | 2020-11-04 | High-peeling-force and anti-aging composite skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022519882.6U CN214266937U (en) | 2020-11-04 | 2020-11-04 | High-peeling-force and anti-aging composite skin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214266937U true CN214266937U (en) | 2021-09-24 |
Family
ID=77773437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022519882.6U Active CN214266937U (en) | 2020-11-04 | 2020-11-04 | High-peeling-force and anti-aging composite skin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214266937U (en) |
-
2020
- 2020-11-04 CN CN202022519882.6U patent/CN214266937U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113956420B (en) | Polyurethane yoga mat and preparation method thereof | |
| EP2247636B2 (en) | Plastically deformable polyurethane rigid foams with improved air permeability and use thereof for producing auto roof linings | |
| DE2210721A1 (en) | Process for producing non-glossy, open-pored polyurethane foams and their use for coating textiles | |
| CN111518259B (en) | High-resilience polyurethane microporous elastomer and preparation method and application thereof | |
| DE10229473A1 (en) | Composite parts made of cover layers and polyurethane sandwich materials and their manufacture | |
| CN214266937U (en) | High-peeling-force and anti-aging composite skin | |
| CN112358594B (en) | Composite material for automobile interior trim skin and preparation method and application thereof | |
| CN213799186U (en) | Automobile door plate | |
| CN214395779U (en) | Composite skin for automobile armrest | |
| WO2011054638A9 (en) | Material for lightweight construction elements made of a multi-wall woven fabric filled with foam | |
| CN214266956U (en) | Composite skin for automobile door panel interior decoration | |
| US8883934B2 (en) | Method for making low density polyurethane foam for sound and vibration absorption | |
| CN214266936U (en) | Composite skin for automobile seat | |
| CN113980289A (en) | Nitrogen and phosphorus-containing lignin-based flame retardant, and preparation method and application thereof | |
| CN214266927U (en) | High-peeling-force, aging-resistant and light-weight composite skin | |
| CN111072890B (en) | Semi-rigid polyurethane foam, preparation method thereof, polyurethane foam sandwich component and application | |
| CN110684173B (en) | Super-soft hydrolysis-resistant wet polyurethane resin and preparation method thereof | |
| WO2014029646A1 (en) | Plastically deformable polyurethane polyamide rigid foam | |
| KR20100054284A (en) | Preparation method of polyurethane foam for sound absorbing material of automobile floor mat | |
| CN114249873B (en) | Polyurethane soft foam and preparation method thereof | |
| CN111087570B (en) | Polyurethane foam and preparation method thereof, polyurethane foam sandwich component and preparation method and application thereof | |
| CN214266935U (en) | Low odor composite skin | |
| CN113322684B (en) | Artificial leather capable of being embossed directly and preparation method thereof | |
| CN116836354A (en) | Flame-laminating material, method for producing same and use thereof | |
| CN112851910A (en) | Anti-aging high-flame-retardant polyurethane sponge, preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |