TPE (Thermoplastic Elastomer) foaming sound insulation material as well as preparation method and application thereof

Abstract

The invention relates to the technical field of foaming sound insulation materials, in particular to a TPE foaming sound insulation material, a preparation method and application thereof, and the TPE foaming sound insulation material comprises the following components by mass: 4-25% of a SEBS and SBS mixture, 10-30% of white oil, 40-70% of EVA cross-linked foaming particles, 8-20% of PE, 3-20% of stearic acid, 1-8% of color masterbatch, and 2-10% of POE. The prepared TPE foaming sound insulation material not only has a good sound insulation effect, but also is excellent in supporting performance, and concrete located on the upper layer of the TPE foaming sound insulation material can be effectively prevented from cracking.

Description

Technical Field

[0001] The present invention relates to the technical field of foamed sound insulation materials, and specifically to a TPE foamed sound insulation material, a preparation method thereof, and an application thereof. Background Art

[0002] The TPE foamed sound insulation material is based on a thermoplastic elastomer, and is made into a material with sound insulation function through physical or chemical foaming processes by adding auxiliaries such as foaming agents.

[0003] The application fields of the TPE foamed sound insulation material are very extensive. Especially in the construction field, it can be used to make sound insulation boards and pads for buildings, which are installed on walls, floors, ceilings and other parts to effectively block the transmission of indoor and outdoor noises. It can also be used as a sealing material for doors, windows, pipelines, etc. to enhance the sound insulation effect. When the foamed sound insulation material is used in construction, first the TPE foamed sound insulation material is laid on the concrete, and then a layer of concrete is laid on the TPE foamed sound insulation material. The existing TPE foamed sound insulation material has a problem of poor support, and the concrete located on the upper layer of the TPE foamed sound insulation material is prone to cracking. Therefore, in view of the problems raised in the above background art, those skilled in the art have proposed a TPE foamed sound insulation material. Summary of the Invention

[0004] The purpose of the present invention is to provide a TPE foamed sound insulation material, a preparation method thereof, and an application thereof, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A TPE foamed sound insulation material, comprising the following components by mass percentage:

[0007] 4-25% of SEBS and SBS mixture, 10-30% of white oil, 40-70% of EVA cross-linked foamed particles, 8-20% of PE, 3-20% of stearic acid, 1-8% of color masterbatch, 2-10% of POE.

[0008] Further, the mass ratio between SEBS and SBS is 2:1.

[0009] Further, the white oil is pentacyclic alkane oil.

[0010] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0011] S1. Grind the EVA cross-linked foamed particles into powder with a particle size of 0.1-5 mm;

[0012] S2. Put SEBS and SBS into a blender and stir - mix them at a stirring speed of 100 - 200 r / min for 5 - 30 min. Add white oil at the beginning of stirring. After stirring for 3 - 5 min, continue to add white oil to obtain TPE material. The mass of white oil added twice is the same.

[0013] S3. Put the powder of the EVA cross - linked foamed particles obtained in step S1, the TPE material in step S2, as well as PE, stearic acid, POE and masterbatch into a blender and continue to stir at 200 - 500 r / min at room temperature for 3 - 5 min to obtain a mixture.

[0014] S4. Put the mixture obtained in step S3 into a twin - screw sheet extruder through a feeder. The extruded material is the TPE foamed sound - insulating material.

[0015] The application of the above - mentioned TPE foamed sound - insulating material in building materials.

[0016] Furthermore, the application of the TPE foamed sound - insulating material in building materials adopts the following method:

[0017] Lay the TPE foamed sound - insulating material on the rough floor, and then lay a layer of concrete on the surface of the laid TPE foamed sound - insulating material.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Both SBS and SEBS are elastomers, which can improve the elasticity and tensile strength of the foamed material. SEBS has stronger toughness and better aging resistance than SBS; the EVA rubber - based foamed powder is a kind of foamed material, which provides the overall foaming performance of the material, and the foamed material has certain sound - insulating performance; PE has excellent physical, chemical and mechanical properties, which can improve the toughness, flexibility and cushioning of the foamed material; POE not only has excellent acid - alkali resistance, but also has strong elasticity and toughness; the masterbatch is used to color the foamed material; stearic acid can also be used as a foaming agent, and at the same time has the functions of a plasticizer and a softening agent; white oil can also improve the softness and durability of the foamed material. The TPE foamed material prepared by the present invention not only has good sound - insulating effect, but also has good support performance of the material, and the concrete on the surface layer is not easy to crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a process flow chart for preparing the TPE foamed sound - insulating material of the present invention;

[0021] Figure 2 It is a physical diagram of the TPE foamed sound - insulating material prepared by the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0023] Please refer to Figures 1 to 2 , the present invention provides:

[0024] Embodiment 1

[0025] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0026] S1. Grind 50 g of EVA cross-linked foamed particles into powder with a particle size of 2 mm;

[0027] S2. Put 10 g of SEBS and 5 g of SBS into a blender and stir and mix at a stirring speed of 160 r / min for 20 min. Add 6.5 g of pentamethylcyclopentane oil at the beginning of stirring, and continue to add 6.5 g of pentamethylcyclopentane oil after 4 min of stirring to obtain a TPE material;

[0028] S3. Put the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 10 g of PE, 4 g of stearic acid, 5 g of POE and 3 g of color masterbatch into a blender and continue to stir at 300 r / min for 4 min to obtain a mixture;

[0029] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, and the extrusion temperature is 800 °C. The extruded material is the TPE foamed sound insulation material.

[0030] Embodiment 2

[0031] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0032] S1. Grind 70 g of EVA cross-linked foamed particles into powder with a particle size of 0.1 mm;

[0033] S2. Put 4 g of SEBS and 2 g of SBS into a blender and stir and mix at a stirring speed of 100 r / min for 5 min. Add 5 g of pentamethylcyclopentane oil at the beginning of stirring, and continue to add 5 g of pentamethylcyclopentane oil after 3 min of stirring to obtain a TPE material;

[0034] S3. Continuously stir the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 8 g of PE, 3 g of stearic acid, 2 g of POE, and 1 g of masterbatch in a blender at 200 r / min for 3 min to obtain a mixture;

[0035] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, with an extrusion temperature of 800 °C. The extruded material is the TPE foamed sound insulation material.

[0036] Example 3

[0037] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0038] S1. Grind 40 g of EVA cross-linked foamed particles into powder with a particle size of 4 mm;

[0039] S2. Put 2.66 g of SEBS and 1.33 g of SBS into a blender and stir and mix at a stirring speed of 200 r / min for 30 min. Add 5 g of pentamethylcyclopentane oil at the beginning of stirring, and continue to add 5 g of pentamethylcyclopentane oil after 5 min of stirring to obtain a TPE material;

[0040] S3. Continuously stir the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 8 g of PE, 20 g of stearic acid, 10 g of POE, and 8 g of masterbatch in a blender at 500 r / min for 5 min to obtain a mixture;

[0041] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, with an extrusion temperature of 800 °C. The extruded material is the TPE foamed sound insulation material.

[0042] Example 4

[0043] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0044] S1. Grind 40 g of EVA cross-linked foamed particles into powder with a particle size of 1 mm;

[0045] S2. Put 2.66 g of SEBS and 1.33 g of SBS into a blender and stir and mix at a stirring speed of 140 r / min for 25 min. Add 15 g of pentamethylcyclopentane oil at the beginning of stirring, and continue to add 15 g of pentamethylcyclopentane oil after 5 min of stirring to obtain a TPE material;

[0046] S3. Continuously stir the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 20 g of PE, 3 g of stearic acid, 2 g of POE, and 1 g of color masterbatch in a blender at 400 r / min for 3 min to obtain a mixture;

[0047] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, with an extrusion temperature of 800 °C, and the extruded material is the TPE foamed sound insulation material.

[0048] Example 5

[0049] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0050] S1. Grind 42 g of EVA cross-linked foamed particles into powder with a particle size of 5 mm;

[0051] S2. Put 16.66 g of SEBS and 8.33 g of SBS into a blender and stir and mix at a stirring speed of 150 r / min for 10 min. Add 5.5 g of pentacycloalkane oil at the beginning of stirring, and continue to add 5.5 g of pentacycloalkane oil after stirring for 3 min to obtain a TPE material;

[0052] S3. Continuously stir the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 10 g of PE, 5 g of stearic acid, 3 g of POE, and 4 g of color masterbatch in a blender at 250 r / min for 3 min to obtain a mixture;

[0053] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, with an extrusion temperature of 800 °C, and the extruded material is the TPE foamed sound insulation material.

[0054] Example 6

[0055] 4 - 25% SEBS and SBS mixture, 10 - 30% white oil, 40 - 70% EVA cross-linked foamed particles, 8 - 20% PE, 3 - 20% stearic acid, 1 - 8% color masterbatch, 2 - 10% POE

[0056] A preparation method of a TPE foamed sound insulation material, comprising the following steps:

[0057] S1. Grind 55 g of EVA cross-linked foamed particles into powder with a particle size of 1 mm;

[0058] S2. Put 10 g of SEBS and 5 g of SBS into a blender and stir and mix them at a stirring speed of 110 r / min for 18 min. Add 5.5 g of pentacycloalkane oil at the beginning of stirring, and continue to add 5.5 g of pentacycloalkane oil after stirring for 5 min to obtain a TPE material;

[0059] S3. Put the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, 8 g of PE, 4 g of stearic acid, 4 g of POE, and 3 g of color masterbatch into a blender and continue to stir at 400 r / min for 5 min to obtain a mixture;

[0060] S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder. The extrusion temperature is 800 °C, and the extruded material is the TPE foamed sound insulation material.

[0061] In the present invention, SBS is composed of hard styrene SM segments on both sides and a soft butadiene rubber segment in the middle;

[0062] SEBS is evolved from the hydrogenation of SBS, and its full name is styrene-ethylene / diene block copolymer, which is formed by changing the unsaturated carbon double bonds in the middle rubber segment of the original SBS into saturated single bonds;

[0063] EVA is copolymerized from ethylene and vinyl acetate;

[0064] PE is a polyethylene material copolymerized from ethylene;

[0065] POE is a polyolefin elastomer, a thermoplastic elastomer obtained by in-situ polymerization of ethylene and α-olefins using a metallocene catalyst.

[0066] Select the foamed sound insulation materials produced by Langfang Xiantai Energy Saving Technology Co., Ltd. and Nantong Qide New Materials Technology Co., Ltd. as Comparative Example 1 and Comparative Example 2 respectively;

[0067] The above six groups of TPE foamed sound insulation materials were prepared in Examples 1-6. A layer of concrete with a thickness of 4 cm was laid on the upper surface of the rough floor. The above six groups of TPE foamed sound insulation materials and the foamed sound insulation materials of Comparative Example 1 and Comparative Example 2 were respectively laid on the concrete. The thickness of the laid foamed sound insulation material was 4 mm. Finally, a layer of concrete with a thickness of 8 mm was laid on the upper surface of the TPE foamed sound insulation material. After the concrete was cured for 72 h, a sound insulation test was carried out. The specific sound insulation test method is as follows:

[0068] Select five points on the upper surface of the top layer of concrete, tap them respectively, measure the decibels of the tapping at five points downstairs, and calculate the average decibel number. The test results are shown in Table 1 below:

[0069] Table 1: Sound insulation capacity test table of the TPE foam sound insulation materials prepared in Examples 1-6 and the foam sound insulation materials in Comparative Examples 1-2

[0070] decibel (dB) Example 1 69 Example 2 68 Example 3 70 Example 4 66 Example 5 68 Example 6 67 Comparative Example 1 65 Comparative Example 2 69

[0071] It can be seen from the data in Table 1 that the TPE foam sound insulation materials prepared in this application have basically the same effect as the foam sound insulation materials obtained on the market;

[0072] Furthermore, after the upper-layer concrete has cured for 72 hours, the cracking rates of the upper-layer concrete surfaces of Examples 1-6 and Comparative Examples 1-2 are measured respectively. The test method for the cracking rate is the ratio of the cracking area to the total area. The test results are shown in Table 2 below:

[0073] Table 2: Upper-layer concrete cracking rate test table of the TPE foam sound insulation materials prepared in Examples 1-6 and the foam sound insulation materials in Comparative Examples 1-2

[0074]

[0075]

[0076] It can be seen from the data in Table 2 above that after the TPE foam sound insulation materials prepared in the present invention are laid on the upper surface of the concrete, the cracking rate of the upper-layer concrete is significantly lower than that of other products on the market, indicating that the TPE foam sound insulation materials prepared in the present invention have excellent supporting performance.

[0077] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A TPE foamed sound insulation material, characterized in that Comprising components with the following mass percentages: 4 - 25% of SEBS and SBS mixture, 10 - 30% of white oil, 40 - 70% of EVA cross-linked foamed particles, 8 - 20% of PE, 3 - 20% of stearic acid, 1 - 8% of masterbatch, 2 - 10% of POE.

2. The TPE foamed sound insulation material according to claim 1, characterized in that, The mass ratio between the SEBS and SBS is 2:

1.

3. The TPE foamed sound insulation material according to claim 1, characterized in that The white oil is pentacyclic alkane oil.

4. A method for preparing the TPE foamed sound insulation material according to any one of claims 1-3, characterized in that, Including the following steps: S1. Grind the EVA cross-linked foamed particles into powder with a particle size of 0.1 - 5 mm; S2. Put SEBS and SBS into a blender and stir and mix at a stirring speed of 100 - 200 r / min for 5 - 30 min. Add white oil at the beginning of stirring. After stirring for 3 - 5 min, continue to add white oil to obtain TPE material. The mass of the white oil added twice is the same; S3. Continue to stir the powder of the EVA cross-linked foamed particles obtained in step S1, the TPE material in step S2, as well as PE, stearic acid, POE and masterbatch in a blender at 200 - 500 r / min at room temperature for 3 - 5 min to obtain a mixture; S4. Add the mixture obtained in step S3 to a twin-screw sheet extruder through a feeder, and the extruded material is the TPE foamed sound insulation material.

5. Application of the TPE foamed sound insulation material according to any one of claims 1 - 3 in building materials.

6. The application of the TPE foamed sound insulation material according to claim 5 in building materials, characterized in that, Adopt the following method: Lay the TPE foamed sound insulation material on the rough floor, and then lay a layer of concrete on the surface of the laid TPE foamed sound insulation material.

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