Bio-based composite light damping terrace material and preparation method thereof

Abstract

The invention relates to the technical field of terrace materials, in particular to a bio-based composite light damping terrace material and a preparation method thereof. The bio-based composite light damping terrace material comprises a component A and a component B, wherein the component A comprises 1-5 parts of polyhydric alcohol and 10-20 parts of isocyanate; the component B is prepared from 20-40 parts of castor oil, 0.3-1 part of a chain extender, 0.5-1 part of a dispersing agent, 0.5-1 part of a defoaming agent, 0.25-0.5 part of a flatting agent, 1-3 parts of a water absorbent, 0.01-0.05 part of color paste, 25-35 parts of a flame retardant and 10-20 parts of microspheres, the ratio of the component A to the component B is 1: 4, a polyurethane molecular chain is more flexible through the castor oil, and deformation and energy absorption in the vibration process are facilitated; by means of the microspheres, the composite material has excellent energy absorption and heat preservation performance, vibration energy can be absorbed, sound can be isolated, and heat transfer can be effectively prevented; by adding the halogen-free environment-friendly efficient flame retardant, formation of a carbon layer on the surface of the material during combustion can be promoted to isolate oxygen, so that open fire is quickly extinguished, and meanwhile, the density of smoke generated during combustion is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of floor materials, and in particular to a bio-based composite lightweight damping floor material and a preparation method thereof. Background Art

[0002] Flooring is a kind of decorative material suitable for the ground, which can give the ground beautiful, waterproof, anti-slip and other functions. At present, the floor covering materials used indoors are mainly PVC coils, polyurethane coatings and epoxy coatings.

[0003] As people's requirements for quality of life improve, their requirements for floor materials are also gradually increasing. Floor materials are not only required to have basic functions such as beauty, waterproofness, and anti-slip, but also to have characteristics such as lightness, safety, quietness, and heat insulation.

[0004] Polyurethane flooring is based on the reaction and curing of materials containing hydroxyl groups with isocyanate groups. For example, raw materials containing hydroxyl groups such as polyester polyols, BDO (1,4-butanediol) and polyether polyols have at least two hydroxyl groups in their molecular structure; raw materials containing isocyanate groups such as MDI-50 (diphenylmethane diisocyanate), TDI-80 (toluene diisocyanate), IPDI (isophorone diisocyanate), etc. have two isocyanate groups in their molecular structure. Hydroxyl groups and isocyanate groups react to form carbamates, which can combine a molecule with a hydroxyl group and a molecule with an isocyanate group together. The molecules react end to end to form a high molecular compound to become polyurethane. However, the molecule with hydroxyl groups cannot be regenerated.

[0005] At the same time, in order to give the polyurethane floor material flame retardant properties, talcum powder, mica powder, powdered flame retardants, etc. are usually added to the raw materials containing hydroxyl groups; some defoaming agents, leveling agents, dispersants and other additives are also added to give the polyurethane floor product defoaming, leveling, and non-settling functions, but the polyurethane floor material does not have the functions of light weight, flame retardancy, heat preservation, damping and sound insulation.

[0006] In view of this, there is an urgent need to improve a renewable bio-based raw material to prepare a floor material with lightweight, flame retardant, heat-insulating, damping and sound-insulating functions and a preparation method thereof. Summary of the invention

[0007] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a bio-based composite lightweight damping floor material and a preparation method thereof.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a bio-based composite lightweight damping floor material, composed of the following components in the following weight proportions: component A is 1-5 parts of polyol and 10-20 parts of isocyanate; component B is 20-40 parts of castor oil, 0.3-1 parts of chain extender, 0.5-1 parts of dispersant, 0.5-1 parts of defoamer, 0.25-0.5 parts of leveling agent, 1-3 parts of water absorbent, 0.01-0.05 parts of color paste, 25-35 parts of flame retardant and 10-20 microspheres, wherein the ratio of component A to component B is 1:4.

[0009] Furthermore, the chain extender is 1,4-butanediol.

[0010] Furthermore, the polyol is PTMG1000.

[0011] Furthermore, the dispersant is BYK-163 or BYK161.

[0012] Furthermore, the leveling agent is leveling agent 395 or leveling agent 495.

[0013] Furthermore, the water removal agent is A3 molecular sieve.

[0014] Furthermore, the flame retardant is a halogen-free high-efficiency flame retardant.

[0015] Furthermore, the microspheres are polymer microspheres.

[0016] A method for preparing a bio-based composite lightweight damping floor material, the method for preparing the above-mentioned bio-based composite lightweight damping floor material is as follows: S1. Preparation of floor component A S101, after baking the polyether polyol at 60-65°C, perform high-speed dispersion vacuum treatment and heat it to 100-150°C and keep it for 2-2.5h, then cool the material to 45-55°C, S102, add isocyanate, then heat to 60-65°C to react for 0.5-1.5h, then heat to 80-85°C to react for 1-2.5h; obtain floor component A; S2. Preparation of floor component B S201, adding castor oil, chain extender, dispersant and part of defoamer into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S202, adding A3 molecular sieve, color paste, flame retardant and microspheres into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S203, adding part of the defoamer and the leveling agent into a high-speed disperser, with a dispersion speed of 1000-2000 r / min and a dispersion time of 15-30 min; S204, packing the materials to obtain floor B component; S3. Mix floor component A and floor component B in a ratio of 1:4 to obtain a bio-based composite lightweight damping floor material.

[0017] Furthermore, the bio-based composite lightweight damping floor material has a tensile strength of 4.7MPa and an elongation at break of 120%; flame retardant properties: oxygen index of 30.2%, free loss factor up to 0.90, thermal conductivity of 0.06 W / (m∙K), and density of 0.7g / cm 3 .

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The present invention uses castor oil containing hydroxyl as the main raw material and isocyanate for reaction curing. Castor oil is a natural plant oil and a renewable resource. Its application in polyurethane materials can reduce dependence on chemical synthetic raw materials, reduce manufacturing costs, and reduce environmental pollution.

[0019] 2. The present invention uses castor oil as the main raw material and isocyanate for reaction curing. The long-chain fatty acids in castor oil make the polyurethane molecular chain more flexible, which is conducive to deformation and energy absorption during vibration. This flexibility enables castor oil polyurethane to maintain good damping performance in a wide frequency range, and the free loss factor can reach up to 0.9, which significantly improves the noise transmission caused by ground equipment and personnel walking.

[0020] 3. The present invention adds polymer microspheres to the polyurethane floor. Compared with other fillers, such microspheres have excellent energy absorption and heat preservation properties, can absorb vibration energy, isolate sound and effectively prevent heat transfer. Since the microspheres are hollow inside, their density is much lower than that of traditional filling materials such as calcium carbonate and talcum powder. Therefore, adding the same volume of hollow glass microspheres to the polyurethane floor can significantly reduce the overall density of the material, with a thermal conductivity of 0.06 W / (m∙K) and a density of 0.7g / cm 3 .

[0021] 4. The polymer microspheres in the present invention are sizing treated by a microsphere sizing agent, so that the amount of microspheres added to the polyurethane system is increased, and the leveling performance of the product is improved, so that the overall density of the product is lower and the thermal conductivity is reduced.

[0022] 5. The present invention adds a halogen-free, environmentally friendly and efficient flame retardant to the polyurethane floor. This flame retardant is halogen-free and environmentally friendly and can promote the formation of a carbon layer on the surface of the material during combustion to isolate oxygen, thereby quickly extinguishing the open flame and effectively reducing the smoke density generated during combustion. Its oxygen index is 30.2%. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of the method for preparing a bio-based composite lightweight damping floor material in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] A preferred embodiment of the present invention is a bio-based composite lightweight damping floor material, composed of the following components in proportion by weight: component A is 1-5 parts of polyol and 10-20 parts of isocyanate; component B is 20-40 parts of castor oil, 0.3-1 parts of chain extender, 0.5-1 parts of dispersant, 0.5-1 parts of defoamer, 0.25-0.5 parts of leveling agent, 1-3 parts of water absorbent, 0.01-0.05 parts of color paste, 25-35 parts of flame retardant and 10-20 microspheres, wherein the ratio of component A to component B is 1:4.

[0026] The chain extender is 1,4-butanediol; the polyol is PTMG1000; the dispersant is BYK-163 or BYK161; the leveling agent is leveling agent 395 or leveling agent 495; the water scavenger is A3 molecular sieve; the flame retardant is a halogen-free high-efficiency flame retardant; and the microspheres are polymer microspheres.

[0027] like Figure 1 As shown, a method for preparing a bio-based composite lightweight damping floor material, the method for preparing the above-mentioned bio-based composite lightweight damping floor material is as follows: S1. Preparation of floor component A S101, after baking the polyether polyol at 60-65°C, perform high-speed dispersion vacuum treatment and heat it to 100-150°C and keep it for 2-2.5h, then cool the material to 45-55°C; S102, add isocyanate, then heat to 60-65°C to react for 0.5-1.5h, then heat to 80-85°C to react for 1-2.5h; obtain floor component A; S2. Preparation of floor component B S201, adding castor oil, chain extender, dispersant and part of defoamer into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S202, adding A3 molecular sieve, color paste, flame retardant and microspheres into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S203, adding part of the defoamer and the leveling agent into a high-speed disperser, with a dispersion speed of 1000-2000 r / min and a dispersion time of 15-30 min; S204, packing the materials to obtain floor B component; S3. Mix floor component A and floor component B in a ratio of 1:4 to obtain a bio-based composite lightweight damping floor material.

[0028] The bio-based composite lightweight damping floor material has a tensile strength of 4.7MPa and an elongation at break of 120%. Flame retardant properties: oxygen index of 30.2%, free loss factor up to 0.90, thermal conductivity of 0.06 W / (m∙K), and density of 0.7g / cm 3 .

[0029] The following is an explanation with reference to specific embodiments. Example

[0030] Preparation of floor component A Step 1, after baking 15 parts of PTMG1000 at 60-65°C, perform high-speed dispersion vacuum treatment and heat to 100-150°C and keep for 2-2.5h, then cool the material to 45-55°C; Step 2, add 200 parts of MDI-50, then heat to 60-65°C for reaction for 1-1.5h, then heat to 80-85°C for reaction for 2-2.5h; obtain component A; Preparation of floor component B Step 1, add 29.46 parts of castor oil, 0.49 parts of chain extender BDO, 0.5 parts of dispersant BYK-163 and 0.25 parts of defoamer 6800 into a high-speed disperser, with a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 2, 1.25 parts of A3 molecular sieve, 0.02 parts of color paste, 25 parts of halogen-free high-efficiency flame retardant, 16.67 parts of polymer microspheres, and 0.25 parts of defoamer 6800 are added to a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 3, 0.5 parts of defoamer 5300 and 0.36 parts of leveling agent 495 are added into a high-speed disperser, the dispersion speed is 1000-2000r / min, and the dispersion time is 15-30min; Step 4, packing the materials to obtain component B of the bio-based polyurethane lightweight damping flame retardant floor material.

[0031] The preferred A:B ratio is 1:4. Component A and component B are mixed and stirred evenly according to the ratio, and then 3mm thick samples and 2mm thick samples are cast. After the samples are completely cured, the test performance is as follows: Mechanical properties: tensile strength 4.7MPa, elongation at break 120%, flame retardant properties: oxygen index 30.2%, free loss factor up to 0.90, thermal conductivity 0.06 W / (m∙K), density 0.7g / cm 3 . Example

[0032] Preparation of floor component A Step 1: bake 15 parts of PTMG1000 at 60-65°C, perform high-speed dispersion vacuum treatment, heat to 100-150°C and keep for 2-2.5h, then cool the material to 45-55°C. Step 2, add 200 parts of MDI-50, then heat to 60-65°C for reaction for 1-1.5h, then heat to 80-85°C for reaction for 2-2.5h; obtain component A; Preparation of floor component B Step 1, add 29.46 parts of castor oil, 0.49 parts of chain extender BDO, 0.5 parts of dispersant BYK-163 and 0.25 parts of defoamer 6800 into a high-speed disperser, with a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 2, 1.25 parts of A3 molecular sieve, 0.02 parts of color paste, 15 parts of halogen-free high-efficiency flame retardant, and 0.25 parts of defoamer 6800 are added to a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 3, 0.5 parts of defoamer 530 and 0.36 parts of leveling agent 495 are added into a high-speed disperser, the dispersion speed is 1000-2000r / min, and the dispersion time is 15-30min; The preferred A:B ratio is 1:2.5. Component A and component B are mixed and stirred evenly according to the ratio, and then 3mm thick samples and 2mm thick samples are cast. After the samples are completely cured, the test performance is as follows: Step 4, packing the materials to obtain component B of the bio-based polyurethane lightweight damping flame retardant floor material.

[0033] Mechanical properties: tensile strength 4.62MPa, elongation at break 152%, flame retardant properties: oxygen index 25.8%, free loss factor up to 0.80, thermal conductivity 0.21 W / (m∙K), density 1.32g / cm³

[0034] Preparation of floor component A Step 1: bake 150 parts of polyol at 60-65°C, perform high-speed dispersion vacuum treatment and heat to 100-150°C for 2-2.5 hours, then cool the material to 45-55°C. Step 2, add 2000 parts of isocyanate, then heat to 60-65°C for reaction for 1-1.5h, then heat to 80-85°C for reaction for 2-2.5h; obtain component A; Preparation of floor component B Step 1, add 29.46 parts of castor oil, 0.49 parts of chain extender BDO, 0.5 parts of dispersant BYK163 and 0.25 parts of defoamer 6800 into a high-speed disperser, with a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 2, 1.25 parts of A3 molecular sieve, 0.02 parts of color paste, 41.67 parts of talc, and 0.25 parts of defoamer 6800 are added to a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; Step 3, 0.5 parts of defoamer 530 and 0.36 parts of leveling agent 495 are added into a high-speed disperser, the dispersion speed is 1000-2000r / min, and the dispersion time is 15-30min; Step 4, packing the materials to obtain component B of the bio-based polyurethane lightweight damping flame retardant floor material.

[0035] The preferred A:B ratio is 1:4. Component A and component B are mixed and stirred evenly according to the ratio, and then 3mm thick samples and 2mm thick samples are cast. After the samples are completely cured, the test performance is as follows: Mechanical properties: tensile strength 5.7MPa, elongation at break 98%, flame retardant properties: oxygen index 14%, thermal conductivity 0.21 W / (m∙K), density 1.37g / cm³ The present invention uses castor oil as the main raw material and isocyanate for reaction curing. The long-chain fatty acids in castor oil make the polyurethane molecular chain more flexible, which is conducive to deformation and energy absorption during vibration. This flexibility enables castor oil polyurethane to maintain good damping performance in a wide frequency range, and the free loss factor can reach up to 0.9, which significantly improves the noise transmission caused by ground equipment and personnel walking.

[0036] The present invention adds polymer microspheres to the polyurethane floor. Compared with other fillers, such microspheres have excellent energy absorption and heat preservation properties, can absorb vibration energy, isolate sound and effectively prevent heat transfer. Since the microspheres are hollow inside, their density is much lower than that of traditional filling materials such as calcium carbonate and talcum powder. Therefore, adding the same volume of hollow glass microspheres to the polyurethane floor can significantly reduce the overall density of the material, with a thermal conductivity of 0.06 W / (m∙K) and a density of 0.7g / cm 3 .

[0037] The present invention adds a halogen-free, environmentally friendly and efficient flame retardant to the polyurethane floor. The flame retardant is halogen-free, environmentally friendly and can promote the formation of a carbon layer on the surface of the material during combustion to isolate oxygen, thereby quickly extinguishing the open flame and effectively reducing the smoke density generated during combustion. The oxygen index is 30.2%.

[0038] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0039] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A bio-based composite lightweight damping floor material, characterized in that: The invention is composed of the following components in the following weight proportions: component A is 1-5 parts of polyol and 10-20 parts of isocyanate; component B is 20-40 parts of castor oil, 0.3-1 parts of chain extender, 0.5-1 parts of dispersant, 0.5-1 parts of defoamer, 0.25-0.5 parts of leveling agent, 1-3 parts of water absorbent, 0.01-0.05 parts of color paste, 25-35 parts of flame retardant and 10-20 microspheres, wherein the ratio of component A to component B is 1:

4.

2. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The chain extender is 1,4-butanediol.

3. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The polyol is PTMG1000.

4. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The dispersant is BYK-163 or BYK161.

5. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The leveling agent is leveling agent 395 or leveling agent 495.

6. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The dehydrating agent is A3 molecular sieve.

7. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The flame retardant is a halogen-free high-efficiency flame retardant.

8. The bio-based composite lightweight damping floor material according to claim 1, characterized in that: The microspheres are polymer microspheres.

9. A method for preparing a bio-based composite lightweight damping floor material, characterized in that: The method for preparing the bio-based composite lightweight damping floor material according to any one of claims 1 to 8 is as follows: S1. Preparation of floor component A S101, after baking the polyether polyol at 60-65°C, perform high-speed dispersion vacuum treatment and heat it to 100-150°C and keep it for 2-2.5h, then cool the material to 45-55°C, S102, add isocyanate, then heat to 60-65°C to react for 0.5-1.5h, then heat to 80-85°C to react for 1-2.5h; obtain floor component A; S2. Preparation of floor component B S201, adding castor oil, chain extender, dispersant and part of defoamer into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S202, adding A3 molecular sieve, color paste, flame retardant and microspheres into a high-speed disperser at a dispersion speed of 2000-3000 r / min and a dispersion time of 15-30 min; S203, adding part of the defoamer and the leveling agent into a high-speed disperser, with a dispersion speed of 1000-2000 r / min and a dispersion time of 15-30 min; S204, packing the materials to obtain floor B component; S3. Mix floor component A and floor component B in a ratio of 1:4 to obtain a bio-based composite lightweight damping floor material.

10. The method for preparing the bio-based composite lightweight damping floor material according to claim 1, characterized in that: The bio-based composite lightweight damping floor material has a tensile strength of 4.7 MPa and an elongation at break of 120%. Flame retardant properties: oxygen index of 30.2%, free loss factor up to 0.90, thermal conductivity of 0.06 W / (m∙K), and density of 0.7 g / cm 3 .

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