Flame-retardant bio-based water-based solvent-free sofa household leather

Abstract

The utility model relates to flame-retardant bio-based water-based solvent-free sofa home furnishing leather which is relatively better in flame-retardant effect and wear-resistant effect, has a better smoke-proof effect, has a better insulating effect and is long in service life, and comprises a base cloth layer, the base cloth layer is formed by combining microfiber cloth and leather fibers, a solvent-free flame-retardant polyurethane coating is arranged on the upper end face of the base cloth layer, and a high-solid flame-retardant coating is arranged on the upper end face of the solvent-free flame-retardant polyurethane coating; a wear-resistant flame-retardant layer is arranged on the upper end face of the high-solid flame-retardant coating, and a scratch-resistant flame-retardant organic silicon layer is arranged on the upper end face of the wear-resistant flame-retardant layer. The flame-retardant bio-based water-based solvent-free sofa household leather has the advantages that 1, the flame-retardant bio-based water-based solvent-free sofa household leather not only has relatively better flame-retardant effect and wear-resistant effect, but also has better smoke-proof effect; and 2, the flame-retardant bio-based water-based solvent-free sofa home leather not only has a better insulating effect, but also has a long service life.

Description

Technical Field

[0001] This utility model belongs to the field of sofa leather manufacturing technology, specifically relating to a flame-retardant bio-based water-based solvent-free sofa and home furnishing leather. Background Technology

[0002] CN 203668735 U, entitled "A Flame-Retardant and Wear-Resistant Sofa Leather," comprises four layers from the inside out: a base fabric, a flame-retardant layer, an adhesive layer, and a wear-resistant layer. The base fabric is a flame-retardant leather base layer, with the flame-retardant layer on its surface accounting for 50-75% of the total leather thickness, measuring 0.4-0.6 mm in thickness; it is a flame-retardant wet-process polyurethane layer. The wear-resistant layer is a 20-30 micrometer thick, densely structured, and smooth-surfaced dry-process polyurethane layer. Its drawback is that the flame-retardant and wear-resistant properties of this type of sofa leather are relatively poor. Utility Model Content

[0003] Design objective: To overcome the shortcomings of the prior art, this design aims to create a flame-retardant, bio-based, water-based, solvent-free sofa and furniture leather that not only has better flame retardant and wear-resistant properties, but also better smoke prevention, insulation, and service life.

[0004] Design scheme: To achieve the above design objectives.

[0005] 1. The upper surface of the base fabric layer is provided with a solvent-free flame-retardant polyurethane coating, and the upper surface of the solvent-free flame-retardant polyurethane coating is provided with a high-solids flame-retardant coating. The upper surface of the high-solids flame-retardant coating is provided with a wear-resistant flame-retardant layer, and the upper surface of the wear-resistant flame-retardant layer is provided with a scratch-resistant flame-retardant silicone layer. The design that the thickness of the solvent-free flame-retardant polyurethane coating is 0.20mm-0.25mm, the thickness of the high-solids flame-retardant coating is 0.08mm-0.12mm, the thickness of the wear-resistant flame-retardant layer is 0.10mm-0.15mm, and the thickness of the scratch-resistant flame-retardant silicone layer is 0.05mm-0.08mm is one of the technical features of this utility model. The purpose of this design is as follows: the upper surface of the base fabric layer is provided with a solvent-free flame-retardant polyurethane coating, and the upper surface of the solvent-free flame-retardant polyurethane coating is provided with a high-solids flame-retardant coating; the upper surface of the high-solids flame-retardant coating is provided with a wear-resistant flame-retardant layer, and the upper surface of the wear-resistant flame-retardant layer is provided with a scratch-resistant flame-retardant silicone layer; the thickness of the solvent-free flame-retardant polyurethane coating is 0.20mm-0.25mm, the thickness of the high-solids flame-retardant coating is 0.08mm-0.12mm, the thickness of the wear-resistant flame-retardant layer is 0.10mm-0.15mm, and the thickness of the scratch-resistant flame-retardant silicone layer is 0.05mm-0.08mm. The 0.05mm-0.08mm thick scratch-resistant flame-retardant silicone layer enables a flame-retardant product... The back of this bio-based water-based solvent-free sofa and furniture leather has advantages such as scratch resistance, flame retardancy and smoke suppression, corrosion resistance, and easy cleaning. The combination of a 0.10mm-0.15mm thick wear-resistant and flame-retardant layer and a 0.08mm-0.12mm thick high-solids flame-retardant coating further enhances the flame retardant effect and smoke prevention performance of this bio-based water-based solvent-free sofa and furniture leather, and also improves its wear resistance. The 0.20mm-0.25mm thick solvent-free flame-retardant polyurethane coating not only further enhances the flame retardant effect of this bio-based water-based solvent-free sofa and furniture leather, but also improves its insulation effect.

[0006] 2. The design of incorporating flame-retardant powder into the fiber structure pores of the water-based bio-based microfiber fabric is the second technical feature of this utility model. The purpose of this design is that the flame-retardant powder in the fiber structure pores of the water-based bio-based microfiber fabric can improve the flame-retardant performance of the fibers, thereby enhancing the flame-retardant effect of the base fabric layer.

[0007] 3. A composite adhesive is applied between the base fabric layer and the solvent-free flame-retardant polyurethane coating, and the application amount of the composite adhesive is 175-185 g / m². 2 A second composite adhesive is applied between the solvent-free flame-retardant polyurethane coating and the high-solids flame-retardant coating, with a spraying amount of 120-140 g / m². 2A composite adhesive is applied between the high-solids flame-retardant coating and the wear-resistant flame-retardant layer, with a spraying amount of 120-140 g / m². 2 A composite adhesive four is applied between the wear-resistant and flame-retardant layer and the scratch-resistant and flame-retardant silicone layer, with a spraying amount of 50-65 g / m². 2 The design of this feature is the third technical characteristic of this utility model. The purpose of this design is that a composite adhesive is applied between the base fabric layer and the solvent-free flame-retardant polyurethane coating, with the application amount of the composite adhesive being 175-185 g / m². 2 A second composite adhesive is applied between the solvent-free flame-retardant polyurethane coating and the high-solids flame-retardant coating, with a spraying amount of 120-140 g / m². 2 A composite adhesive is applied between the high-solids flame-retardant coating and the wear-resistant flame-retardant layer, with a spraying amount of 120-140 g / m². 2 A composite adhesive four is applied between the wear-resistant and flame-retardant layer and the scratch-resistant and flame-retardant silicone layer, with a spraying amount of 50-65 g / m². 2 This improves the bonding strength between the layers in a flame-retardant bio-based water-based solvent-free sofa and furniture leather, thereby increasing its service life.

[0008] 4. The fibers in the microfiber fabric adsorb nano-silica, and the amount of nano-silica used is 160-180 g / m². 2 This design is the fourth technical feature of this utility model. The purpose of this design is that the fibers in the microfiber fabric adsorb nano-silica, and the amount of nano-silica used is 160-180 g / m². 2 The fibers contain adsorbed nano-silica, which can further enhance the bonding strength between the flame-retardant coating and the base fabric layer, thereby further improving the durability of a flame-retardant bio-based water-based solvent-free sofa and furniture leather.

[0009] Technical Solution: A flame-retardant bio-based water-based solvent-free sofa and furniture leather, comprising a base fabric layer composed of microfiber fabric and genuine leather fibers, a solvent-free flame-retardant polyurethane coating on the upper surface of the base fabric layer, a high-solids flame-retardant coating on the upper surface of the solvent-free flame-retardant polyurethane coating, a wear-resistant flame-retardant layer on the upper surface of the high-solids flame-retardant coating, and a scratch-resistant flame-retardant silicone layer on the upper surface of the wear-resistant flame-retardant layer; the thickness of the solvent-free flame-retardant polyurethane coating is 0.20mm-0.25mm, the thickness of the high-solids flame-retardant coating is 0.08mm-0.12mm, the thickness of the wear-resistant flame-retardant layer is 0.10mm-0.15mm, and the thickness of the scratch-resistant flame-retardant silicone layer is 0.05mm-0.08mm.

[0010] Compared with the prior art, this utility model has two advantages: first, it provides flame-retardant bio-based water-based solvent-free sofa and furniture leather with better flame-retardant and wear-resistant effects, as well as better smoke prevention; second, it provides good insulation and long service life. Attached Figure Description

[0011] Figure 1 This is a cross-sectional structural diagram of a flame-retardant, bio-based, water-based, solvent-free sofa and furniture leather. Detailed Implementation

[0012] Example 1: Refer to Appendix Figure 1 A flame-retardant bio-based water-based solvent-free sofa and furniture leather includes a base fabric layer 1, which is composed of microfiber fabric 11 and genuine leather fibers 12. The upper surface of the base fabric layer 1 is provided with a solvent-free flame-retardant polyurethane coating 2, and the upper surface of the solvent-free flame-retardant polyurethane coating 2 is provided with a high-solids flame-retardant coating 3. The upper surface of the high-solids flame-retardant coating 3 is provided with a wear-resistant flame-retardant layer 4, and the upper surface of the wear-resistant flame-retardant layer 4 is provided with a scratch-resistant flame-retardant silicone layer 5. The thickness of the solvent-free flame-retardant polyurethane coating 2 is 0.20mm-0.25mm, the thickness of the high-solids flame-retardant coating 3 is 0.08mm-0.12mm, the thickness of the wear-resistant flame-retardant layer 4 is 0.10mm-0.15mm, and the thickness of the scratch-resistant flame-retardant silicone layer 5 is 0.05mm-0.08mm. The solvent-free flame-retardant polyurethane coating 2 is prepared by reacting bio-based polyether polyol A and isocyanate B. The bio-based polyether polyol A contains 25-48%wt of bio-based components (e.g., bio-based 1 / 3-propanediol), and also contains 30%wt of aluminum hydroxide, 8-10%wt of ADP flame retardant, and 10-15%wt of MCA flame retardant. The preparation of this solvent-free flame-retardant polyurethane coating is existing technology and will not be further described here. The high-solids flame-retardant coating 3 is prepared from a water-based bio-based (bio-based content 28-37%wt) aliphatic polyurethane resin with a solid content of 60%wt, 10-15%wt of antimony trioxide, and 10-15%wt of MCA flame retardant. The preparation of this high-solids flame-retardant coating 3 is existing technology and will not be further described here. The wear-resistant and flame-retardant layer 4 is prepared by mixing bio-based (15-34%wt) TPU resin, ADP flame retardant, and APP flame retardant. The preparation of the wear-resistant and flame-retardant layer 4 is existing technology and will not be described further here. The scratch-resistant and flame-retardant silicone layer 5 is prepared by mixing addition-type liquid silicone with SiC material. The preparation of the scratch-resistant and flame-retardant silicone layer 5 is existing technology and will not be described further here.

[0013] The microfiber fabric 11 is a water-based bio-based Knitted microfiber fabric, which is formed by combining water-based bio-based microfiber fabric 111 and Knitted fabric 112 through a needle-punching method. The water-based bio-based microfiber fabric is prepared using water-based bio-based polyurethane and nano PA66 resin as base materials. The preparation of the water-based bio-based microfiber fabric is existing technology and will not be described further here. The water-based bio-based Knitted microfiber fabric and the dermal fiber 12 are pierced into the water-based bio-based Knitted microfiber fabric through a high-pressure hydroentangling process. The high-pressure hydroentangling process is existing technology and will not be described further here.

[0014] The genuine leather fiber 12 is made of split cowhide. The genuine leather fiber 12 is prepared by degreasing and defibering split cowhide. The preparation process of the genuine leather fiber 12 is existing technology, so it will not be described in detail here.

[0015] The water-based bio-based microfiber fabric contains flame-retardant powder in the fiber structure voids. The fiber structure voids of the water-based bio-based microfiber fabric contain 8-10%wt ADP (diethylaluminum hypophosphite) flame-retardant powder, which can improve the flame-retardant performance of the fiber. At the same time, the bio-based content of the water-based bio-based polyurethane resin in the water-based bio-based microfiber fabric is 30-48%wt.

[0016] Preferably, the thickness of the solvent-free flame-retardant polyurethane coating 2 is 0.23 mm, the thickness of the high-solids flame-retardant coating 3 is 0.10 mm, the thickness of the wear-resistant flame-retardant layer 4 is 0.13 mm, and the thickness of the scratch-resistant flame-retardant silicone layer 5 is 0.07 mm.

[0017] A composite adhesive is applied between the base fabric layer 1 and the solvent-free flame-retardant polyurethane coating 2, with a spraying amount of 175-185 g / m². 2 A composite adhesive second is provided between the solvent-free flame-retardant polyurethane coating 2 and the high-solids flame-retardant coating 3, and the spraying amount of the composite adhesive second is 120-140 g / m³. 2 A composite adhesive 3 is provided between the high-solids flame-retardant coating 3 and the wear-resistant flame-retardant layer 4, and the spraying amount of the composite adhesive 3 is 120-140g / m². 2 A composite adhesive four is provided between the wear-resistant and flame-retardant layer 4 and the scratch-resistant and flame-retardant silicone layer 5, and the spraying amount of the composite adhesive four is 50-65g / m². 2 The first composite adhesive is designated as JF-NS-BIO6930A (polyether polyol) and JF-NS-BIO6930B (isocyanate); the second composite adhesive is designated as JF-PDY-1821H; the third composite adhesive is designated as JF-PDY-1861H; and the fourth composite adhesive is Sibase 1056A / 1056B from Jiangxi Lutai Technology Co., Ltd.

[0018] The fibers in the microfiber fabric 11 contain adsorbed nano-silica, and the amount of nano-silica used is 160-180 g / m². 2 The base fabric layer 1 contains 20-23% wt cotton and 30-36% wt genuine leather fiber. At the same time, the base fabric layer 1 is pretreated with a 15% wt concentration of nano-silica solution to improve the bonding strength between the flame-retardant coating and the fabric base, thereby enhancing durability.

[0019] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. A flame-retardant, bio-based, water-based, solvent-free sofa and furniture leather, comprising a base fabric layer (1), said base fabric layer (1) being composed of microfiber fabric (11) and genuine leather fibers (12), characterized in that: The upper surface of the base fabric layer (1) is provided with a solvent-free flame-retardant polyurethane coating (2) and the upper surface of the solvent-free flame-retardant polyurethane coating (2) is provided with a high-solids flame-retardant coating (3). The upper surface of the high-solids flame-retardant coating (3) is provided with a wear-resistant flame-retardant layer (4) and the upper surface of the wear-resistant flame-retardant layer (4) is provided with a scratch-resistant flame-retardant silicone layer (5). The thickness of the solvent-free flame-retardant polyurethane coating (2) is 0.20mm-0.25mm, the thickness of the high-solids flame-retardant coating (3) is 0.08mm-0.12mm, the thickness of the wear-resistant flame-retardant layer (4) is 0.10mm-0.15mm, and the thickness of the scratch-resistant flame-retardant silicone layer (5) is 0.05mm-0.08mm.

2. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 1, characterized in that: The microfiber fabric (11) is a water-based bio-based high-fiber fabric, which is a combination of water-based bio-based microfiber fabric (111) and high-fiber fabric (112) through needle punching.

3. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 2, characterized in that: The genuine leather fiber (12) is made of split cowhide.

4. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 2, characterized in that: The water-based bio-based microfiber fabric contains flame-retardant powder in the pores of its fiber structure.

5. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 1, characterized in that: The thickness of the solvent-free flame-retardant polyurethane coating (2) is 0.23 mm, the thickness of the high-solids flame-retardant coating (3) is 0.10 mm, the thickness of the wear-resistant flame-retardant layer (4) is 0.13 mm, and the thickness of the scratch-resistant flame-retardant silicone layer (5) is 0.07 mm.

6. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 1, characterized in that: A composite adhesive is provided between the base fabric layer (1) and the solvent-free flame-retardant polyurethane coating (2), and the spraying amount of the composite adhesive is 175-185 g / m. 2 A composite adhesive is provided between the solvent-free flame-retardant polyurethane coating (2) and the high-solids flame-retardant coating (3), and the spraying amount of the composite adhesive is 120-140 g / m³. 2 A composite adhesive is provided between the high-solids flame-retardant coating (3) and the wear-resistant flame-retardant layer (4), and the spraying amount of the composite adhesive is 120-140 g / m³. 2 A composite adhesive four is provided between the wear-resistant and flame-retardant layer (4) and the scratch-resistant and flame-retardant silicone layer (5), and the spraying amount of the composite adhesive four is 50-65g / m². 2 .

7. The flame-retardant bio-based water-based solvent-free sofa and furniture leather according to claim 1, characterized in that: The fibers in the microfiber fabric (11) adsorb nano-silica, and the amount of nano-silica used is 160-180 g / m. 2 .

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