Polyether ester composite sponge and automobile instrument desk prepared from polyether ester composite sponge

Abstract

The utility model relates to a polyether ester composite sponge and an automobile instrument desk prepared from the polyether ester composite sponge, and mainly solves the technical problems that in the prior art, the surface of the automobile instrument desk has hemp skin and pits, the bonding force is not enough, and the preparation cost is high. According to the technical scheme, the novel polyether ester composite sponge sequentially comprises a first fabric layer (1), a synthetic polyether ester sponge (2) and a second fabric layer (3) from top to bottom, the problem is well solved, and the novel polyether ester composite sponge can be applied to the automobile instrument desk industry.

Description

Technical Field

[0001] The utility model relates to a polyether-ester composite sponge and an automobile instrument panel prepared therefrom. Background Art

[0002] At present, the main decorative materials for automobile dashboards are plastic skeletons pre-embedded with low-tear 3D mesh and then with PVC skin. In the past, the design used a unified skeleton groove depth to place the low-tear 3D mesh, that is, the depth of the skeleton groove is the same as the height of the low-tear 3D mesh. Due to the different corresponding tensile areas during the later manual coating, and the low-tear 3D mesh will be compressed, it is easy to cause various appearance defects during the production process, especially the soft and hard junctions are prone to marks. In order to avoid the appearance of soft and hard junctions and affect the appearance quality, the existing technology adjusts the mold in the area where the soft and hard junction marks are obvious. However, this method will lead to later design changes and mold adjustments of parts, consume manpower, and require a large amount of cost to adjust the mold. In addition, the raw material of the low-tear 3D mesh is a fiber structure. After the dashboard is coated with the low-tear 3D mesh, the airbag explodes with fiber splashing and cannot explode within the accurate explosion range, posing a risk of threatening life safety.

[0003] Chinese patent CN104903828A discloses a car dashboard covering process, which discloses that the car dashboard includes a frame, a three-dimensional mesh filler attached to the frame, and a skin coated outside the three-dimensional mesh filling layer, and the covering process includes the following steps: (100) punching and sewing the skin; (200) attaching the frame to the three-dimensional mesh filling layer; (300) oven pressing; (400) attaching the skin; (500) vacuum adsorption. The three-dimensional mesh filling layer used in the invention is a 3Dmesh layer. 3Dmesh is not only expensive in use, but also because the size of the 3Dmesh sold on the market is fixed, it will cause material waste in the process of cutting the dashboard.

[0004] Chinese utility model patent CN220096152U discloses a car dashboard, which adopts a new car dashboard. The car dashboard comprises, from top to bottom, a leather layer (1), a first glue layer (2), a first non-woven fabric layer (3), a synthetic polyether ester composite sponge layer (4), a second non-woven fabric layer (5), a second glue layer (6), and a dashboard plastic part (7). In the utility model, the first non-woven fabric layer and the second non-woven fabric are conventional non-woven fabrics, and glue may penetrate into the sponge layer. When the glue is too little, the amount of glue left on the surface of the dashboard plastic part is small, affecting the bonding performance; when the glue is too much, the glue penetrates into the sponge layer, resulting in the phenomenon of pockmarks on the surface of the skin. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing technology has the problems of rough spots on the surface of the automobile instrument panel, insufficient bonding strength and high preparation cost. Provided is a new polyether ester composite sponge and an automobile instrument panel prepared therefrom, wherein the obtained polyether ester composite sponge has the advantages of high bonding performance with the automobile instrument frame, no rough spots on the instrument panel surface and low preparation cost.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a polyether ester composite sponge, characterized in that it includes, from top to bottom, a first fabric layer 1, a synthetic polyether ester sponge 2, and a second fabric layer 3, wherein the first fabric layer 1 is selected from a low tear knitted fabric, a waterproof low tear knitted fabric, and a waterproof spunlace non-woven fabric; the second fabric layer 3 is selected from a low tear knitted fabric, a waterproof low tear knitted fabric, or a waterproof spunlace non-woven fabric; wherein the tear strength of the waterproof low tear knitted fabric is 50 to 20 0N / cm, gram weight of 30-200g / m, breaking strength of 20-100N / cm, elongation at break of 40-100%, odor level ≤3.5, thickness of 0.1-3mm, and waterproof level of 1-5; the tear strength of the waterproof spunlace non-woven fabric is 50-150N / cm, gram weight of 30-200g / m, breaking strength of 20-100N / cm, elongation at break of 20-100%, odor level ≤3.5, thickness of 0.1-3mm, and waterproof level of 1-5.

[0007] In the above technical solution, preferably, the density of the synthetic polyetherester sponge 2 is 25-100 kg / m 3 , thickness 1.8~15mm

[0008] In the above technical solution, preferably, the density of the synthetic polyetherester sponge 2 is 30-55 kg / m3.

[0009] In the above technical solution, preferably, the first fabric layer 1 is selected from one of waterproof low-tear knitted fabrics or waterproof non-woven fabrics; and the second fabric layer 3 is selected from one of waterproof low-tear knitted fabrics or waterproof non-woven fabrics.

[0010] In the above technical solution, preferably, the first fabric layer 1 is bonded to one side of the synthetic polyetherester sponge 2 by glue or flame compounding; the second fabric layer 3 is bonded to the other side of the synthetic polyetherester sponge 2 by glue or flame compounding.

[0011] The automobile instrument panel prepared by polyetherester composite sponge comprises, from top to bottom, a leather layer 4, a first fabric layer 1, a synthetic polyetherester sponge 2, a second fabric layer 3, and an instrument panel plastic part 5, wherein the first fabric layer 1 is selected from a low-tear knitted fabric, a waterproof low-tear knitted fabric, and a waterproof spunlace non-woven fabric; the second fabric layer 3 is selected from a low-tear knitted fabric, a waterproof low-tear knitted fabric, or a waterproof spunlace non-woven fabric; wherein the tear strength of the waterproof low-tear knitted fabric is 50 to 200 N / cm, The gram weight is 30-200g / m, the breaking strength is 20-100N / cm, the breaking elongation is 40-100%, the odor level is ≤3.5, the thickness is 0.1-3mm, and the waterproof level is 1-5; the tear strength of the waterproof spunlace non-woven fabric is 50-150N / cm, the gram weight is 30-200g / m, the breaking strength is 20-100N / cm, the breaking elongation is 20-100%, the odor level is ≤3.5, the thickness is 0.1-3mm, and the waterproof level is 1-5.

[0012] In the above technical solution, preferably, the leather layer 4 is selected from one of PVC, PU or TPO; and the thickness of the leather layer is 1.0 to 3.0 mm.

[0013] In the above technical solution, preferably, the leather layer 4, the polyether ester composite sponge and the instrument panel plastic part 5 are connected by glue.

[0014] The utility model provides a polyether-ester composite sponge. In the invention, a synthetic polyether-ester composite sponge layer is adopted to replace the 3D mesh layer in the prior art. The utility model has the advantages of low cost, complete preparation and safe use. At the same time, the synthetic polyether-ester composite sponge layer adopts a fabric layer with waterproof performance, which avoids the glue seepage when bonding with the instrument panel plastic parts and the surface layer. On the one hand, the bonding performance with the instrument panel plastic parts is improved, and on the other hand, the glue seepage phenomenon is avoided, thereby making the surface layer smoother and flatter. At the same time, the tear strength of the synthetic polyether-ester composite sponge layer is low, thereby achieving better technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the polyetherester composite sponge in the utility model.

[0016] Figure 2 It is a structural schematic diagram of the automobile instrument panel in the utility model.

[0017] The accompanying drawings are marked as follows:

[0018] 1-first fabric layer, 2-synthetic polyether ester sponge, 3-second fabric layer, 4-leather layer, 5-instrument panel plastic parts. DETAILED DESCRIPTION

[0019] [Example 1]

[0020] A polyetherester composite sponge comprises, from top to bottom, a first fabric layer 1, a synthetic polyetherester sponge 2, and a second fabric layer 3, wherein the first fabric layer 1 is a waterproof low-tear knitted fabric, and the second fabric layer 2 is a waterproof low-tear knitted fabric; the performance indicators of the waterproof low-tear knitted fabric are as follows: tear strength of 120N / cm, gram weight of 80g / m, breaking strength of 80N / cm, elongation at break of 42%, odor of 3.5, thickness of 0.5mm, and waterproof grade of 3.

[0021] Synthetic polyetherester sponge performance index: density is 55kg / m 3 , thickness is 3.2mm.

[0022] The polyetherester composite sponge layer was compounded by flame compounding, and the performance indicators after compounding are shown in Table 1.

[0023] [Example 2]

[0024] A polyetherester composite sponge comprises, from top to bottom, a first fabric layer 1, a synthetic polyetherester sponge 2, and a second fabric layer 3. The first fabric layer 1 is a waterproof spunlace nonwoven fabric, and the second fabric layer 2 is a waterproof spunlace nonwoven fabric. The performance indicators of the waterproof spunlace nonwoven fabric are as follows: tear strength of 100N / cm, gram weight of 40g / m, breaking strength of 82N / cm, elongation at break of 35%, odor of 3.5, thickness of 0.3mm, and waterproof grade of 3.

[0025] Synthetic polyetherester sponge performance index: density is 58kg / m 3 , thickness is 3.0mm.

[0026] The polyetherester composite sponge layer was compounded by flame compounding, and the performance indicators after compounding are shown in Table 1.

[0027] [Example 3]

[0028] A polyetherester composite sponge comprises, from top to bottom, a first fabric layer 1, a synthetic polyetherester sponge 2, and a second fabric layer 3, wherein the first fabric layer 1 is a waterproof spunlace nonwoven fabric, and the second fabric layer 2 is a waterproof low-tear knitted fabric; the performance indicators of the waterproof spunlace nonwoven fabric are as follows: tear strength of 110 N / cm, gram weight of 60 g / m, breaking strength of 90 N / cm, elongation at break of 40%, odor of 3.5, thickness of 0.4 mm, and waterproof grade of 3; the performance indicators of the waterproof low-tear knitted fabric are as follows: tear strength of 115 N / cm, gram weight of 100 g / m, breaking strength of 85 N / cm, elongation at break of 43%, odor of 3.5, thickness of 0.4 mm, and waterproof grade of 3.

[0029] Synthetic polyetherester sponge performance index: density is 45kg / m 3 , thickness is 2.0mm.

[0030] The polyetherester composite sponge layer is bonded by polyurethane water-based adhesive. The performance indicators after bonding are shown in Table 1.

[0031] [Example 4]

[0032] A polyetherester composite sponge comprises, from top to bottom, a first fabric layer 1, a synthetic polyetherester sponge 2, and a second fabric layer 3. The first fabric layer 1 is a low-tear knitted fabric, and the second fabric layer 2 is a low-tear knitted fabric. The performance indicators of the low-tear knitted fabric are as follows: tear strength of 80N / cm, gram weight of 78g, breaking strength of 70N / cm, elongation at break of 45%, odor of 3.5, thickness of 0.5mm, and waterproof grade of 1.

[0033] Synthetic polyetherester sponge performance index: density is 50kg / m 3 , thickness is 2.0mm.

[0034] The polyetherester composite sponge layer is bonded by polyurethane water-based adhesive. The performance indicators after bonding are shown in Table 1.

[0035] [Example 5]

[0036] A polyetherester composite sponge comprises, from top to bottom, a first fabric layer 1, a synthetic polyetherester sponge 2, and a second fabric layer 3, wherein the first fabric layer 1 is a low-tear knitted fabric, and the second fabric layer 2 is a waterproof low-tear knitted fabric; the performance indicators of the low-tear knitted fabric are tear strength of 88N / cm, gram weight of 79g / m, breaking strength of 75N / cm, elongation at break of 50%, odor of 3.5, thickness of 0.46mm, and waterproof grade 1; the performance indicators of the waterproof low-tear knitted fabric are tear strength of 113N / cm, gram weight of 83g, breaking strength of 86N / cm, elongation at break of 55%, odor of 3.5, thickness of 0.48mm, and waterproof grade 4.

[0037] Synthetic polyetherester sponge performance index: density is 35kg / m 3 , thickness is 4.0mm.

[0038] The polyetherester composite sponge layer was compounded by flame compounding, and the performance indicators after compounding are shown in Table 1.

[0039] Table 1 Performance indicators of polyetherester composite sponge

[0040]

[0041] [Example 6]

[0042] A car instrument panel comprises, from top to bottom, a leather layer 4, a polyether ester composite sponge, and an instrument panel plastic part 5; the leather layer is selected from a PVC surface, and the polyether ester composite sponge is the polyether ester composite sponge prepared in Example 1.

[0043] The above materials are cut, glued and cured to obtain the automobile instrument panel.

[0044] The automobile instrument panel is compounded by glue, and the performance indicators after compounding are shown in Table 2.

[0045] [Example 7]

[0046] A car instrument panel comprises, from top to bottom, a leather layer 4, a polyetherester composite sponge, and an instrument panel plastic part 5; the leather layer is selected from PU skin, and the polyetherester composite sponge is the polyetherester composite sponge prepared in Example 2.

[0047] The above materials are cut, glued and cured to obtain the automobile instrument panel.

[0048] The car dashboard is compounded by glue, and the performance indicators after compounding are shown in Table 2

[0049] Among them, the adhesion force is tested according to the adhesion force standard of the airbag explosion area. Three 25mm*200mm specimens are cut out of the airbag explosion area, and the specimens are peeled outward with a horizontal tensile testing machine. The test result ≥30N is qualified; Airbag explosion: the test is carried out in accordance with the standard GWTAE72-41:2020-02 "Passenger car front passenger airbag explosion test method and evaluation indicators": the samples are placed in 23℃, -35℃, and 85℃ environments for more than 4 hours, taken out of the environmental chamber, and the detonation test is completed within 2 minutes; the prepared automobile dashboard is experimented according to the standard GWTAE72-41:2020-02.

[0050] Table 2 Performance indicators of automobile instrument panel

[0051]

[0052]

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polyetherester composite sponge, characterized in that: The invention comprises, from top to bottom, a first fabric layer (1), a synthetic polyetherester sponge (2), and a second fabric layer (3), wherein the first fabric layer (1) is selected from a low tear knitted fabric, a waterproof low tear knitted fabric, and a waterproof spunlace non-woven fabric; the second fabric layer (3) is selected from a low tear knitted fabric, a waterproof low tear knitted fabric, or a waterproof spunlace non-woven fabric; wherein the tear strength of the waterproof low tear knitted fabric is 50-200 N / cm, the gram weight is 30-200 g / m, the breaking strength is 20-100 N / cm, the breaking elongation is 40-100%, the odor level is ≤3.5, the thickness is 0.1-3 mm, and the waterproof level is 1-5; the tear strength of the waterproof spunlace non-woven fabric is 50-150 N / cm, the gram weight is 30-200 g / m, the breaking strength is 20-100 N / cm, the breaking elongation is 20-100%, the odor level is ≤3.5, the thickness is 0. 1~3mm, waterproof level 1~5.

2. The polyetherester composite sponge according to claim 1, characterized in that: The synthetic polyetherester sponge (2) has a density of 25 to 100 kg / m3 and a thickness of 1.8 to 15 mm.

3. The polyetherester composite sponge according to claim 2, characterized in that: The density of the synthetic polyetherester sponge (2) is 30-55 kg / m3.

4. The polyetherester composite sponge according to claim 1, characterized in that: The first fabric layer (1) is selected from one of waterproof low-tear knitted fabrics or waterproof spunlace non-woven fabrics; the second fabric layer (3) is selected from one of waterproof low-tear knitted fabrics or waterproof spunlace non-woven fabrics.

5. The polyetherester composite sponge according to claim 1, characterized in that: The first fabric layer (1) is bonded to one side of the synthetic polyether ester sponge (2) by means of glue or flame bonding; and the second fabric layer (3) is bonded to the other side of the synthetic polyether ester sponge (2) by means of glue or flame bonding.

6. An automobile instrument panel made of the polyetherester composite sponge according to claim 1, comprising, from top to bottom, a leather layer (4), a first fabric layer (1), a synthetic polyetherester sponge (2), a second fabric layer (3), and an instrument panel plastic part (5), wherein the first fabric layer (1) is selected from a low-tear knitted fabric, a waterproof low-tear knitted fabric, and a waterproof spunlace non-woven fabric; the second fabric layer (3) is selected from a low-tear knitted fabric, a waterproof low-tear knitted fabric, or a waterproof spunlace non-woven fabric; wherein: The tear strength of the waterproof low-tear knitted fabric is 50~200N / cm, the gram weight is 30~200g / m, the breaking strength is 20~100N / cm, the elongation at break is 40~100%, the odor level is ≤3.5, the thickness is 0.1~3mm, and the waterproof level is 1~5; the tear strength of the waterproof spunlace non-woven fabric is 50~150N / cm, the gram weight is 30~200g / m, the breaking strength is 20~100N / cm, the elongation at break is 20~100%, the odor level is ≤3.5, the thickness is 0.1~3mm, and the waterproof level is 1~5.

7. The automobile instrument panel prepared from the polyetherester composite sponge according to claim 6, characterized in that: The leather layer (4) is selected from one of PVC, PU or TPO; the thickness of the leather layer is 1.0-3.0 mm.

8. The automobile instrument panel prepared from the polyetherester composite sponge according to claim 6, characterized in that: The leather layer (4), the polyether ester composite sponge, and the instrument panel plastic part (5) are connected by glue.

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