Environment-friendly solvent-free TPU (thermoplastic polyurethane) non-woven fabric for coating non-slip trolley and preparation method thereof

Abstract

The invention discloses an environment-friendly solvent-free anti-tackle coating TPU non-woven fabric which comprises the following components in parts by weight: 80-100 parts of aliphatic TPU particles, 10-20 parts of butadiene styrene rubber, 1-5 parts of color master batches, 2-6 parts of a compatilizer, 8-12 parts of urethane acrylate, 4-8 parts of an antioxidant, 1-3 parts of an antibacterial agent and 5-9 parts of a plasticizer. The invention further provides a preparation method of the TPU non-woven fabric. The non-woven fabric prepared from the TPU particles, the butadiene styrene rubber, the compatilizer and other raw materials is high in strength, low in production cost, biodegradable, recyclable, capable of effectively relieving the white pollution problem, capable of achieving the effects of saving energy, reducing carbon and protecting the environment, resistant to high temperature and water, capable of prolonging the service life, good in wear resistance and non-slip performance and suitable for popularization and application. The plasticizer and the butadiene styrene rubber are added, so that the tensile property of the TPU non-woven fabric is improved, and the TPU non-woven fabric is not easy to break in the use process.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, and in particular to an environmentally friendly solvent-free TPU nonwoven fabric for anti-skid vehicle coating and a preparation method thereof. Background Art

[0002] TPU non-woven fabric is a non-woven fabric composed of directional or random fibers. It is a new generation of environmentally friendly materials. It is moisture-proof, breathable, flexible, lightweight, non-combustible, never yellowing, easy to decompose, non-toxic and non-irritating, rich in colors, with clear and distinct textures on the surface, low price, recyclable, energy-saving and carbon-reducing, and environmental protection.

[0003] TPU is a new type of environmentally friendly material, known as green environmentally friendly material. It has excellent physical and mechanical properties, such as good elasticity, good wear resistance, strong tear resistance, low permanent deformation rate, etc. TPU has a wide temperature range of use and has the advantages of oil resistance, corrosion resistance, UV resistance and microbial resistance. TPU can also be recycled.

[0004] TPU non-woven fabric is a non-toxic and harmless environmentally friendly material with the advantages of good elasticity, high lightness, moisture permeability and waterproofness, and does not cause any harm to human skin. When used, TPU non-woven fabric has insufficient wear resistance and anti-slip performance, and the tensile performance of TPU non-woven fabric is poor. It is easy to break during use, thereby reducing the use effect of TPU non-woven fabric. Summary of the invention

[0005] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating to solve the problems raised in the above background technology.

[0006] The present invention is achieved through the following technical scheme: an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions: 80-100 parts of polyurethane TPU particles, 10-20 parts of styrene-butadiene rubber, 1-5 parts of masterbatch, 2-6 parts of compatibilizer, 8-12 parts of polyurethane acrylate, 4-8 parts of antioxidant, 1-3 parts of antibacterial agent, and 5-9 parts of plasticizer.

[0007] Preferably, the polyurethane TPU particles are Huntsman 6053 polyurethane TPU particles. That is, the polyurethane TPU particles of the present invention are Huntsman Avalon 6053AG DP produced by Shanghai Huntsman Polyurethane Co., Ltd., which has good anti-slip performance and aging resistance, and helps to improve the anti-slip performance, mechanical properties and aging resistance of TPU non-woven fabrics.

[0008] Preferably, the plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1-2.

[0009] Preferably, the compatibilizer is maleic anhydride grafted polypropylene.

[0010] Preferably, the antioxidant is at least one of antioxidant 1010 , antioxidant 168 , antioxidant 1076 and antioxidant 1098 .

[0011] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0012] S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix and stir according to weight parts at a stirring speed of 800-900 rpm for 16-20 min to obtain a mixture A;

[0013] S2: Add the masterbatch and the antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotation of the screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the side of the release film with the texture, it is rolled and cooled by a roller to obtain the textured TPU surface layer;

[0014] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product.

[0015] In step S2 of the present invention, after the TPU drools out, one side of the TPU contacts the release film with a texture, and after roller rolling, the surface where the TPU contacts the release film forms a texture, and after cooling, a certain texture is formed, and then the TPU is separated from the texture to obtain a TPU surface layer with a texture.

[0016] Furthermore, in step S3, the temperatures of the five heating zones of the casting machine are 150-160°C, 170-180°C, 180-190°C, 185-195°C, and 185-195°C, respectively, and the temperature of the casting die is 185-195°C.

[0017] Furthermore, in step S4, the heat pressing temperature is 70-90°C.

[0018] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle covering, which has the following beneficial effects: the non-woven fabric made from polyurethane TPU particles, styrene-butadiene rubber, and a compatibilizer has high strength, low production cost, and is biodegradable. It can be recycled again, can effectively alleviate the problem of white pollution, has a long storage time, is resistant to high temperatures and water, and can extend the service life and reduce white pollution; the addition of plasticizers and styrene-butadiene rubber increases the tensile properties of the TPU non-woven fabric, makes it less likely to break during use, and improves the quality of the TPU non-woven fabric. The TPU non-woven fabric of the present invention uses TPU material that can be recycled and regenerated, can be reused, and is environmentally friendly. Specific embodiments

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the embodiments, but the contents mentioned in the embodiments are not intended to limit the present invention.

[0020] Example 1

[0021] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions:

[0022] 80 parts of polyurethane TPU particles, 10 parts of styrene-butadiene rubber, 1 part of masterbatch, 2 parts of compatibilizer, 8 parts of polyurethane acrylate, 4 parts of antioxidant, 1 part of antibacterial agent, and 5 parts of plasticizer.

[0023] The polyurethane TPU particles are Huntsman 6053 polyurethane TPU particles.

[0024] The compatibilizer is maleic anhydride grafted polypropylene, and the maleic anhydride grafted polypropylene is DuPont maleic anhydride grafted polypropylene P613.

[0025] The polyurethane acrylate adopts polyurethane acrylate PU610.

[0026] The antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0027] The antibacterial agent is a zeolite-supported silver-zinc antibacterial agent.

[0028] The styrene butadiene rubber adopts styrene butadiene rubber SBR1502.

[0029] The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:2.

[0030] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0031] S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix them at a stirring speed of 850 rpm for 20 min to obtain a mixture A.

[0032] S2: Add the masterbatch and antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then, the mixture is pushed by the screw rotation, extruded from the die head of the casting machine, and cast onto the release film with a texture. After one side of the TPU layer contacts the side of the release film with a texture, the mixture is rolled and cooled by a roller to obtain a textured TPU surface layer;

[0033] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product. Further, in step S3, the temperatures of the five heating zones of the casting machine are 150-160°C, 170-180°C, 180-190°C, 185-195°C, and 185-195°C, respectively, and the temperature of the casting die is 185-195°C. The non-woven base fabric uses TPU non-woven base fabric.

[0034] Furthermore, in step S3, the temperatures of the five heating zones of the casting machine are 155°C, 175°C, 185°C, 190°C, and 190°C, respectively, and the temperature of the casting die is 190°C.

[0035] Furthermore, in step S4, the thermal pressing temperature is 80°C.

[0036] The non-woven fabric made of polyurethane TPU particles, styrene-butadiene rubber and compatibilizer has high strength, low production cost and is biodegradable. It can effectively alleviate the problem of white pollution, has a long storage time, is resistant to high temperature and water, prolongs its service life and reduces white pollution. The addition of plasticizer and styrene-butadiene rubber increases the tensile properties of TPU non-woven fabric, makes it less likely to break during use, and improves the quality of TPU non-woven fabric.

[0037] Example 2

[0038] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions:

[0039] 85 parts of polyurethane TPU particles, 15 parts of styrene-butadiene rubber, 2 parts of masterbatch, 3 parts of compatibilizer, 9 parts of polyurethane acrylate, 5 parts of antioxidant, 1.5 parts of antibacterial agent, 25 parts of polytetramethylene ether glycol, and 6 parts of plasticizer.

[0040] The compatibilizer is maleic anhydride grafted polypropylene.

[0041] The antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0042] The antibacterial agent is a zeolite-supported silver-zinc antibacterial agent.

[0043] The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1.5.

[0044] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0045] S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix them at a stirring speed of 850 rpm for 20 min to obtain a mixture A.

[0046] S2: Add the masterbatch and the antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotation of the screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the side of the release film with the texture, it is rolled and cooled by a roller to obtain the textured TPU surface layer;

[0047] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product. Further, in step S3, the temperatures of the five heating zones of the casting machine are 150°C, 170°C, 180°C, 185°C, and -195°C, respectively, and the temperature of the casting die is 185°C.

[0048] The rest of the content of this embodiment is the same as that of Embodiment 1.

[0049] Example 3

[0050] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions:

[0051] 85 parts of polyurethane TPU particles, 18 parts of styrene-butadiene rubber, 3 parts of masterbatch, 4 parts of compatibilizer, 10 parts of polyurethane acrylate, 6 parts of antioxidant, 2 parts of antibacterial agent, and 7 parts of plasticizer.

[0052] The compatibilizer is maleic anhydride grafted polypropylene.

[0053] The antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0054] The antibacterial agent is a zeolite-supported silver-zinc antibacterial agent.

[0055] The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1.

[0056] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0057] S1: Pour TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container according to weight parts, mix and stir at a stirring speed of 850 rpm for 20 min, and mix evenly to obtain a mixture A;

[0058] S2: Add the masterbatch and the antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotation of the screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the side of the release film with the texture, it is rolled and cooled by a roller to obtain the textured TPU surface layer;

[0059] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product.

[0060] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions:

[0061] 90 parts of polyurethane TPU particles, 15 parts of styrene-butadiene rubber, 4 parts of masterbatch, 5 parts of compatibilizer, 11 parts of polyurethane acrylate, 7 parts of antioxidant, 2.5 parts of antibacterial agent, and 8 parts of plasticizer.

[0062] The compatibilizer is maleic anhydride grafted polypropylene.

[0063] The antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0064] The antibacterial agent is a zeolite-supported silver-zinc antibacterial agent.

[0065] The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1.5.

[0066] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0067] S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix them at a stirring speed of 850 rpm for 20 min to obtain a mixture A.

[0068] S2: Add the masterbatch and the antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotation of the screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the side of the release film with the texture, it is rolled and cooled by a roller to obtain the textured TPU surface layer;

[0069] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product. In step S3, the temperatures of the five heating zones of the casting machine are 155°C, 175°C, 185°C, 199°C, and 195°C, respectively, and the temperature of the casting die is 195°C.

[0070] The rest of the content of this embodiment is the same as that of Embodiment 1.

[0071] Example 5

[0072] The present invention proposes an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, the weight of which is in the following proportions:

[0073] 90 parts of polyurethane TPU particles, 20 parts of styrene-butadiene rubber, 5 parts of masterbatch, 6 parts of compatibilizer, 12 parts of polyurethane acrylate, 8 parts of antioxidant, 3 parts of antibacterial agent, 40 parts of polytetramethylene ether glycol, 5 parts of dispersant, 9 parts of plasticizer, and 10 parts of silicone defoamer.

[0074] The compatibilizer is maleic anhydride grafted polypropylene.

[0075] The antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0076] The antibacterial agent is a zeolite-supported silver-zinc antibacterial agent.

[0077] The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1.5.

[0078] The present invention also proposes a method for preparing an environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, comprising the following steps:

[0079] S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix them at a stirring speed of 850 rpm for 20 min to obtain a mixture A.

[0080] S2: Add the masterbatch and the antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotation of the screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the side of the release film with the texture, it is rolled and cooled by a roller to obtain the textured TPU surface layer;

[0081] S3: hot pressing the TPU surface layer and the non-woven base fabric to obtain a TPU non-woven fabric product.

[0082] The rest of the content of this embodiment is the same as that of Embodiment 1.

[0083] Comparative Example 1

[0084] This comparative example is different from Example 3 in that it does not contain styrene-butadiene rubber.

[0085] Performance test: The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating prepared in Examples 1-5 was subjected to the following performance tests: the tensile strength of the material was tested according to ASTMD412, and the tensile strength of the material was tested according to ASTMD624; the hydrolysis resistance was tested for 48 hours using 10% sodium hydroxide according to QB / T4671-2014; the hydrolysis resistance was tested according to HG / T3780-2005

[0086] Determine the anti-slip performance; determine the wear resistance according to GB / T1689-2014.

[0087] The test results are shown in the following table:

[0088]

[0089]

[0090] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating, characterized by: The weight ratio is as follows: 80-100 parts of polyurethane TPU particles, 10-20 parts of styrene-butadiene rubber, 1-5 parts of masterbatch, 2-6 parts of compatibilizer, 8-12 parts of polyurethane acrylate, 4-8 parts of antioxidant, 1-3 parts of antibacterial agent, and 5-9 parts of plasticizer.

2. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: The polyurethane TPU particles are Huntsman 6053 polyurethane TPU particles.

3. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: The plasticizer is a mixture of dibutyl phthalate and diethylene glycol dibenzoate in a weight ratio of 1:1-2.

4. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: The compatibilizer is maleic anhydride grafted polypropylene.

5. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: The antioxidant is at least one of antioxidant 1010 , antioxidant 168 , antioxidant 1076 and antioxidant 1098 .

6. An environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: The steps include: S1: Pour polyurethane TPU particles, styrene-butadiene rubber, compatibilizer, polyurethane acrylate, plasticizer and antibacterial agent into a container and mix and stir according to weight parts at a stirring speed of 800-900 rpm for 16-20 min to obtain a mixture A; S2: Add the masterbatch and antioxidant to the mixture A, mix and stir evenly to obtain the mixture B; then send the mixture B to the hopper of the casting machine, and obtain the TPU molten mixture after being heated in the heating zone of the casting machine, and then push it through the rotating screw, extrude it from the die head of the casting machine, and cast it onto the release film with its own texture. After one side of the TPU layer contacts the one side of the release film with the texture, it is pressed and cooled by a pressure roller to obtain a TPU surface layer with a distinct texture; S3: The back side of the TPU surface layer is heat-pressed with the non-woven base fabric to obtain a finished TPU non-woven fabric.

7. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 1, characterized in that: In step S3, the temperatures of the five heating zones of the casting machine are 150-160°C, 170-180°C, 180-190°C, 185-195°C, and 185-195°C, respectively, and the temperature of the casting die is 185-195°C.

8. The environmentally friendly solvent-free TPU non-woven fabric for anti-skid vehicle coating according to claim 6, characterized in that: In step S4, the thermal pressing temperature is 70-90°C.

Images