阅读说明：本技术 一种浮筑楼板用保温隔音垫及其制备方法 (Heat-insulating sound-insulating pad for floating floor slab and preparation method thereof ) 是由 陈水衡 卢俊 范文娟 于 2021-09-27 设计创作，主要内容包括：本申请涉及建筑材料领域,具体公开了一种浮筑楼板用保温隔音垫及其制备方法。保温隔音垫的原料包括橡胶颗粒45-50份；粘合剂15-25份；泡棉料80-90份；纤维5-10份；蒙脱土5-8份；硅酸钙10-20份；其制备方法为：S1：将泡棉料破碎成泡棉料颗粒；S2：将泡棉料颗粒、橡胶颗粒以及纤维进行分散,将分散后的泡棉料颗粒、橡胶颗粒以及纤维与蒙脱土、硅酸钙混合搅拌均匀得到第一混合物；S3：将粘合剂添加至S2中的第一混合物中,搅拌均匀得到第二混合物；S4：将第二混合物在100-110℃条件下,采用15-20Mpa的压力进行压制5-6h得到半成品；S5：将半成品进行切片后得到保温隔音垫。其具有保温隔音性能佳的优点。(The application relates to the field of building materials, and particularly discloses a heat-insulating sound-insulating pad for a floating floor slab and a preparation method thereof. The raw materials of the heat-preservation and sound-insulation pad comprise 45-50 parts of rubber particles; 15-25 parts of an adhesive; 80-90 parts of foam cotton material; 5-10 parts of fibers; 5-8 parts of montmorillonite; 10-20 parts of calcium silicate; the preparation method comprises the following steps: s1: crushing the foam material into foam material particles; s2: dispersing foam material particles, rubber particles and fibers, and mixing and stirring the dispersed foam material particles, rubber particles and fibers with montmorillonite and calcium silicate uniformly to obtain a first mixture; s3: adding the adhesive to the first mixture in S2, and uniformly stirring to obtain a second mixture; s4: pressing the second mixture at the temperature of 100-110 ℃ for 5-6h by adopting the pressure of 15-20Mpa to obtain a semi-finished product; s5: and slicing the semi-finished product to obtain the heat-insulating sound-insulating pad. It has the advantage that heat preservation sound insulation performance is good.)

1. The utility model provides a heat preservation gives sound insulation and fills up for floating floor which characterized in that is made by the raw materials including following part by weight:

45-50 parts of rubber particles;

15-25 parts of an adhesive;

80-90 parts of foam cotton material;

5-10 parts of fibers;

5-8 parts of montmorillonite;

10-20 parts of calcium silicate;

the rubber particles are prepared by cleaning waste tire rubber particles, and the cleaning step comprises at least one of alcohol cleaning and alkali cleaning.

2. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the preparation of the rubber particles comprises the following steps:

s1: soaking the waste tire rubber particles in absolute ethyl alcohol for 20-24h, filtering, then washing with water, and drying at 60-65 ℃ to obtain a semi-finished product;

s2: soaking the semi-finished product in 10-15 wt% sodium hydroxide solution for 20-24 hr, filtering, washing with water, and drying at 60-65 deg.C to obtain rubber particles.

3. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the fiber is one or a mixture of two of wood fiber and glass fiber.

4. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the montmorillonite is sodium montmorillonite.

5. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the adhesive is single-component polyurethane glue.

6. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the foam material is one or a mixture of CP foam and EPE pearl foam.

7. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 6, wherein: the foam cotton material comprises 55-60 parts of CP foam cotton and 25-30 parts of EPE pearl cotton.

8. The thermal insulation and sound insulation pad for the floating floor slab as claimed in claim 1, wherein: the raw materials also comprise 1-1.5 parts of anti-aging agent.

9. The method for preparing a thermal insulation and sound insulation pad for a floating floor slab according to any one of claims 1 to 7, wherein: the preparation steps are as follows:

s1: crushing the foam material into foam material particles;

s2: dispersing foam material particles, rubber particles and fibers, and mixing and stirring the dispersed foam material particles, rubber particles and fibers with montmorillonite and calcium silicate uniformly to obtain a first mixture;

s3: adding the adhesive to the first mixture in S2, and uniformly stirring to obtain a second mixture;

s4: pressing the second mixture at the temperature of 100-110 ℃ for 5-6h by adopting the pressure of 15-20Mpa to obtain a semi-finished product;

s5: and slicing the semi-finished product to obtain the heat-insulating sound-insulating pad.

Technical Field

The application relates to the field of building materials, in particular to a heat-insulating and sound-insulating pad for a floating floor slab and a preparation method thereof.

Background

The floating floor slab is constructed by laying a sound insulation layer on a reinforced concrete floor slab, forming an arc-shaped sound insulation layer like a ship by using the vertical sound insulation sheets on the side surfaces, and then laying a floor. The sound transmission effect of the solid is strongest among the solid, the liquid and the gas, the sound transmission of the solid is greatly relieved, and the sound insulation performance of the floor is also greatly enhanced. The sound insulation pad of the floating floor slab is a sound insulation solution of the floating floor slab developed specially for buildings such as villas, high-rise apartments, commercial and residential dual-purpose buildings and can provide the maximum impact sound pressure level improvement effect for the floating floor slab.

The Chinese patent with application number 201810676353.1 discloses a sound-insulation shock pad and a preparation method thereof, wherein elastic materials are put into a crusher to be crushed to form particles; putting the particles into a stirrer, and simultaneously adding a binder for stirring to obtain a mixture; putting the mixture into a mold barrel, compacting the mixture in the mold barrel by using a barrel pressing machine, and standing for a period of time to obtain a cylindrical sound insulation body; and cutting the cylindrical sound insulation body into sheets by using a circular cutting machine to form the sound insulation shock pad. The sound-insulation damping pad is prepared by using elastic materials such as waste yoga mats, rubber tires and plastic pipes in air conditioners or refrigerators as raw materials through the processes of crushing into particles, adding a binder, stirring and mixing, compacting by a barrel press and slicing by a circular cutting machine.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the shock pad that directly utilizes materials such as waste rubber tire's preparation, thermal insulation performance is relatively poor, and bearing capacity is relatively poor, can make closely knit degree too big in the use, makes the effect variation that gives sound insulation, and then leads to the sound insulation performance relatively poor.

Disclosure of Invention

In order to improve the sound insulation performance of the sound insulation pad, the application provides a heat insulation and sound insulation pad for a floating floor slab and a preparation method thereof.

First aspect, the application provides a heat preservation and sound insulation pad for floating floor slab, adopts following technical scheme:

a heat-insulating and sound-insulating pad for a floating floor slab is prepared from the following raw materials in parts by weight:

45-50 parts of rubber particles;

15-25 parts of an adhesive;

80-90 parts of foam cotton material;

5-10 parts of fibers;

5-8 parts of montmorillonite;

10-20 parts of calcium silicate;

the rubber particles are prepared by cleaning waste tire rubber particles, and the cleaning step comprises at least one of alcohol cleaning and alkali cleaning.

By adopting the technical scheme, the waste tire rubber particles have better elasticity and sound absorption and vibration reduction performance, but the surface of the waste tire rubber is rough, impurities can be adsorbed in the production process and can influence the combination with other substances, the modified rubber particles are prepared by modifying the waste tire rubber particles with alkali liquor after being cleaned, the impurities on the surface of the waste tire rubber particles are removed, the bonding capacity of the modified rubber particles and other substances is further improved, and the modified rubber particles prepared from the waste tire rubber particles have better recycling performance on waste materials; the foam material is elastic, light in weight and porous in structure, and has a good sound absorption effect; the strength of the system is improved by adding the fibers, the bearing capacity of the sound insulation pad is improved, and the influence on the sound insulation effect caused by overlarge compactness in the use process of the sound insulation pad is avoided; the montmorillonite has better impact resistance, fatigue resistance, dimensional stability and gas barrier property by adding, thereby improving the comprehensive physical property of the sound insulation pad and improving the processing property of the material; the calcium silicate has good heat resistance and heat insulation performance, can effectively improve the heat insulation performance of the sound insulation pad together with foam and the like, has good antibacterial, mildew-proof, ageing-resistant and corrosion-resistant performances, has good heat insulation performance, further improves the resistance and heat insulation performance of the sound insulation pad, and prolongs the service life of the sound insulation pad, so that the obtained heat insulation and sound insulation pad has good heat insulation and sound insulation performance.

Preferably, the preparation of the rubber particles comprises the following steps:

s1: soaking the waste tire rubber particles in absolute ethyl alcohol for 20-24h, filtering, then washing with water, and drying at 60-65 ℃ to obtain a semi-finished product;

s2: soaking the semi-finished product in 10-15 wt% sodium hydroxide solution for 20-24 hr, filtering, washing with water, and drying at 60-65 deg.C to obtain rubber particles.

By adopting the technical scheme, absolute ethyl alcohol is a good solvent, inorganic matters can be dissolved by organic matters dissolved by skill, and hot absolute ethyl alcohol can dissolve zinc stearate, after the waste tire rubber particles are soaked by the absolute ethyl alcohol, impurities on the surfaces of the waste tire rubber particles can be effectively taken out, because the tire rubber can introduce the zinc stearate to be used as a lubricant and the like in production, in the using process of the rubber tire, the zinc stearate can be diffused and moved to the surface of the rubber, the adhesive force of the rubber can be reduced, the waste tire rubber particles are further soaked and modified by sodium hydroxide, the sodium hydroxide can react with the zinc stearate to further remove the zinc stearate on the surface of the rubber, the adhesive property of the rubber and other substances is improved, and the strength of the sound insulation pad is effectively improved.

Preferably, the fibers are one or a mixture of two of wood fibers and glass fibers.

By adopting the technical scheme, the wood fiber is easily dispersed in the heat insulation material to form a three-dimensional space structure, the supporting force and the durability of a system are enhanced, the stability, the strength and the uniformity of the system can be improved, and the size stability and the thermal stability of the wood fiber can effectively improve the heat insulation and crack resistance of the sound insulation pad; the glass fiber has strong heat resistance, good corrosion resistance, high elastic coefficient, large elongation within the elastic limit and high tensile strength, so that the impact energy is absorbed greatly, and the mechanical property and the resistance of the system can be effectively improved.

Preferably, the montmorillonite is sodium montmorillonite.

By adopting the technical scheme, the sodium-based montmorillonite has better viscosity, thermal stability and the like, and further can effectively improve the flame retardant property, the thermal stability and the mechanical property of a system.

Preferably, the adhesive is a one-component polyurethane glue.

By adopting the technical scheme, the single-component polyurethane adhesive has the advantages of convenience in construction, high curing speed and the like, has high bonding strength, good elasticity, water resistance, aging resistance, impact shock resistance and bending fatigue resistance after curing, has high peeling strength, and effectively improves the strength and the resistance of the sound insulation pad.

Preferably, the foam material is one or a mixture of two of CP foam and EPE pearl foam.

By adopting the technical scheme, the CP foam has excellent sealing property and compression deformation resistance, namely the elasticity has durability, the long-term shockproof protection of the sound insulation pad can be ensured, and the CP foam has excellent characteristics of good flame retardance, chemical corrosion resistance and the like, is easy to bond with other substances, and further can effectively improve the resistance of the sound insulation pad; the EPE pearl wool has the advantages of good moisture resistance, shock resistance, sound insulation, heat preservation, good plasticity, strong toughness, strong impact resistance and good chemical resistance, and further can effectively improve the resistance and mechanical property of the sound insulation pad.

Preferably, the foam material comprises 55-60 parts of CP foam and 25-30 parts of EPE pearl cotton.

By adopting the technical scheme, the CP foam and the EPE pearl foam are compounded, so that the CP foam and the EPE pearl foam complement each other in performance, and the mechanical property of the sound insulation pad is further improved.

Preferably, the raw material also comprises 1-1.5 parts of anti-aging agent.

By adopting the technical scheme, the anti-aging agent can effectively delay the aging of the sound insulation pad, inhibit the oxidation effect and further effectively improve the durability of the sound insulation pad.

In a second aspect, the present application provides a method for preparing a thermal insulation and sound insulation pad for a floating floor slab, which adopts the following technical scheme:

a preparation method of a heat and sound insulation pad for a floating floor slab comprises the following preparation steps:

s1: crushing the foam material into foam material particles;

s2: dispersing foam material particles, modified rubber particles and fibers, and mixing and stirring the dispersed foam material particles, modified rubber particles and fibers with montmorillonite and calcium silicate uniformly to obtain a first mixture;

s3: adding the adhesive to the first mixture in S2, and uniformly stirring to obtain a second mixture;

s4: pressing the second mixture at the temperature of 100-110 ℃ for 5-6h by adopting the pressure of 15-20Mpa to obtain a semi-finished product;

s5: and slicing the semi-finished product to obtain the heat-insulating sound-insulating pad.

By adopting the technical scheme, because foam cotton particles, modified rubber particles, fibers and the like are easy to agglomerate after being placed for a long time, the dispersibility in the system is improved by dispersing the foam cotton particles, the modified rubber particles and the foam cotton are compacted by adopting the pressure of 15-20Mpa for 5-6h at the temperature of 100 plus materials and 110 ℃, so that the modified rubber particles and the foam cotton are compacted and simultaneously bonded, the bonding forming in the struggling system is realized, the process is simple, the operation is easy, and the prepared sound insulation pad has better heat insulation and sound insulation performance.

In summary, the present application has the following beneficial effects:

1. because this application adopts modified rubber granule, bubble cotton material, fibre, montmorillonite and calcium silicate, bubble cotton material improves the sound-insulating properties of system, and the intensity of system is improved to the fibre, and the addition of montmorillonite makes it have better shock resistance, antifatigue, dimensional stability and gaseous separation performance, calcium silicate and bubble cotton etc. can effectively improve the heat preservation performance of sound insulation pad with being practical together, because modified rubber granule is stronger with the adhesive capacity of other materials, improve sound insulation pad's bearing capacity and mechanical properties, the heat preservation sound insulation pad that obtains has better heat preservation sound-insulating properties.

2. In this application preferably adopt with waste tire rubber granule through absolute ethyl alcohol soak the back, rethread sodium hydroxide further soaks the modification to waste tire rubber granule, improves the adhesive property of rubber and other substances, and then effectively improves the intensity that gives sound insulation and fills up.

3. According to the method, the broken foam particles, the modified rubber particles and the fibers are dispersed, and then the foam particles and the modified rubber particles are pressed for 5-6 hours at the temperature of 100-110 ℃ under the pressure of 15-20Mpa, so that the modified rubber particles, the foam particles and the like are compacted and simultaneously bonded, and the bonding forming in an struggling system is realized, the process is simple, the operation is easy, and the prepared sound insulation pad has better heat insulation and sound insulation performance.

Detailed Description

The present application will be described in further detail with reference to examples.

The sources of the raw materials used in this application are as follows:

TABLE 1 sources of raw materials

Name of raw materials	Purchase source
		Adhesive agent	Shanghai shouxing industry Co Ltd
CP foam	Taiqi high molecular Material Co., Ltd, Dongguan
		EPE pearl wool	Xianglong plastic science and technology Limited of Nantong City
Wood fiber	Gallery crane flying building materials Co Ltd
		Glass fiber	Wanqian chemicals limited of Jiangyin
Montmorillonite clay	Lingshou county Ruixin mineral powder plant

Preparation example of modified rubber particles

Preparation example 1

The rubber particles are prepared by the following steps:

60kg of waste tire rubber particles are soaked in absolute ethyl alcohol for 24 hours, filtered, washed by tap water and dried at 65 ℃ to obtain the rubber particles.

The particle size of the waste tire rubber particles in the preparation is 0.25-0.5 mm.

Preparation example 2

The rubber particles are prepared by the following steps:

60kg of waste tire rubber particles are soaked in a sodium hydroxide solution with the mass fraction of 10% for 24h, filtered, washed by water and dried at 65 ℃ to obtain modified rubber particles.

The particle size of the waste tire rubber particles in the preparation is 0.25-0.5 mm.

Preparation example 3

The rubber particles are prepared by the following steps:

s1: soaking 60kg of waste tire rubber particles in absolute ethyl alcohol for 24h, filtering, then washing with tap water, and drying at 65 ℃ to obtain a semi-finished product;

s2: and soaking the semi-finished product in a sodium hydroxide solution with the mass fraction of 10% for 24h, filtering, washing with water, and drying at 65 ℃ to obtain rubber particles.

The particle size of the waste tire rubber particles in the preparation is 0.25-0.5 mm.

Preparation example 4

The rubber particles are prepared by the following steps:

s1: soaking 60kg of waste tire rubber particles in absolute ethyl alcohol for 20h, filtering, then washing with tap water, and drying at 60 ℃ to obtain a semi-finished product;

s2: and soaking the semi-finished product in 15% sodium hydroxide solution by mass for 20h, filtering, washing with water, and drying at 60 ℃ to obtain rubber particles.

The particle size of the waste tire rubber particles in the preparation is 0.25-0.5 mm.

Examples

Example 1

The heat-insulating and sound-insulating pad for the floating floor is prepared by the following steps of:

s1: crushing the foam material into foam material particles by a crusher, so that the particle size of the foam material particles is less than 0.5 mm;

s2: dispersing foam material particles, rubber particles and fibers by using a dispersion machine, putting the dispersed foam material particles, rubber particles and fibers, montmorillonite and calcium silicate into a stirring machine for mixing and stirring, wherein the stirring speed is 50r/min, and stirring for 5min to obtain a first mixture;

s3: adding the adhesive to the first mixture in S2, and continuing stirring for 5min to obtain a second mixture;

s4: pressing the second mixture for 5h by a pressing machine under the condition that the temperature is constant at 100 ℃ and the pressure of 15Mpa to obtain a semi-finished product;

s5: and slicing the semi-finished product to obtain the heat-insulating sound-insulating pad.

In the embodiment, the foam material is CP foam; rubber particles were prepared according to preparation example 1; the fiber is wood fiber; the montmorillonite is calcium-based montmorillonite, and the calcium silicate is a common commercial product; the adhesive is polyurethane glue which is purchased from Shanghai Yangxing industry Co.

Examples 2 to 3

The difference between the heat and sound insulation pad for the floating floor slab and the embodiment 1 is that the raw materials and the corresponding parts by weight are shown in the table 2.

TABLE 2 materials and weights (kg) thereof in examples 1-3

Components	Example 1	Example 2	Example 3
				Rubber particles	45	48	50
Adhesive agent	25	20	15
				Cotton soaking material	90	85	80
Fiber	10	7	5
				Montmorillonite clay	5	6	8
Calcium silicate	20	15	10

Example 4

A floating floor thermal insulation and sound insulation pad is different from the floating floor thermal insulation and sound insulation pad in the embodiment 1 in that rubber particles are prepared by the preparation example 2.

Example 5

A floating floor thermal insulation and sound insulation pad is different from the floating floor thermal insulation and sound insulation pad in example 1 in that rubber particles are prepared according to preparation example 3.

Example 6

A floating floor thermal insulation and sound insulation pad is different from the floating floor thermal insulation and sound insulation pad in example 1 in that rubber particles are prepared according to preparation example 4.

Example 7

A floating floor thermal and sound insulation pad is different from that in example 6 in that glass fiber is used as fiber.

Example 8

A thermal and sound insulation pad for a floating floor, which is different from example 6 in that a mixture of 5kg of glass fiber and 5kg of wood fiber is used as fiber.

Example 9

The difference between the heat preservation and sound insulation pad for the floating floor slab and the embodiment 8 is that sodium montmorillonite is adopted as montmorillonite.

Example 10

The difference between the heat preservation and sound insulation pad for the floating floor slab and the embodiment 9 is that the adhesive is single-component polyurethane glue.

Example 11

The difference between the heat preservation and sound insulation pad for the floating floor slab and the embodiment 10 is that the foam material in the embodiment is EPE foam.

Example 12

A heat and sound insulation pad for a floating floor slab is different from the pad in example 11 in that the foam material in this example is a mixture of 60kg of CP foam and 30kg of EPE foam.

Example 13

A heat and sound insulation pad for a floating floor slab is different from the pad in example 11 in that the foam material in this example is a mixture of 55kg of CP foam and 25kg of EPE foam.

Example 14

A thermal insulation and sound insulation pad for a floating floor, which is different from embodiment 12 in that the raw material of the thermal insulation and sound insulation pad further comprises 1kg of an anti-aging agent, and the anti-aging agent is added to a first mixture together with a binder in S3; anti-aging agents are available from Kyoho chemical Co., Ltd.

Example 15

A thermal and sound insulation pad for a floating floor slab, which is different from example 14 in that 1.5kg of an antioxidant was used.

Comparative example

Comparative example 1

A floating floor used heat preservation and sound insulation pad is different from the embodiment 1 in that rubber particles directly adopt waste tire rubber particles.

Comparative example 2

A thermal and sound insulation pad for a floating floor, which is different from the thermal and sound insulation pad of example 1 in that the raw materials do not contain fibers.

Comparative example 3

A heat and sound insulation pad for a floating floor slab is different from the heat and sound insulation pad in the embodiment 1 in that montmorillonite is not included in raw materials.

Comparative example 4

A heat and sound insulation pad for a floating floor slab is different from that of the embodiment 1 in that the raw materials do not contain fiber and montmorillonite.

Performance test

1. The stress (MPa) at 50% compressibility of the thermal insulation and sound insulation mats for a floating floor prepared in the examples and the comparative examples was measured according to HG/T3843-2008 "vulcanized rubber short time static compression test method", and the measurement results are shown in table 3.

2. The thermal and acoustical insulation mats for floating floor prepared in the examples and comparative examples were tested for tear strength (kN/m) according to ASTM-D624 Standard test method for tear Strength of conventional vulcanized rubber and thermoplastic Elastomers, and the test results are shown in Table 3.

3. The normalized impact sound pressure levels of the thermal insulation and sound insulation pad for the floating floor prepared in each example and the comparative example at different impact frequencies of 125Hz, 500Hz and 2000Hz were detected according to GB/T50121-2005 "evaluation Standard for building Sound insulation" at a standard floor normalized impact sound pressure level of 78dB, and the improvement of the normalized impact sound pressure levels was represented by Δ L (thickness of sample: 1 mm), and the detection results are shown in Table 3.

TABLE 3

It can be seen by combining examples 1 to 6 and comparative example 1 and table 3 that the stress and tear strength at 50% compression ratio of examples 1 to 6 are better than those of comparative example 1, and the impact sound pressure level improvement Δ L of examples 1 to 6 is also due to the fact that in comparative example 1, after the rubber particles of the waste tire are soaked and cleaned by at least one of absolute ethyl alcohol and sodium hydroxide, the adhesive property between the rubber and other substances is improved, the strength and tear resistance of the thermal insulation and sound insulation pad are effectively improved, the bearing capacity of the thermal insulation and sound insulation pad is further improved, and the sound insulation effect of the thermal insulation and sound insulation pad is effectively improved. The stress and tear strength of examples 5-6 are better than those of examples 1-3 when the compressibility is 50%, which shows that the bearing capacity and sound insulation performance of the thermal insulation and sound insulation pad can be further improved after the waste tire rubber particles are washed by absolute ethyl alcohol and sodium hydroxide.

It can be seen by combining examples 6-8 and comparative example 2 and table 3 that the stress and tear strength at 50% compression ratio of examples 6-8 are better than those of comparative example 2, and the impact sound pressure level improvement Δ L of examples 6-8 is also higher than that of comparative example 2, which indicates that the load-bearing capacity and tear resistance of the thermal insulation and sound insulation pad can be improved after the fibers are added into the thermal insulation and sound insulation pad, and indicates that the mechanical properties of the thermal insulation and sound insulation pad can be improved after the fibers are added into the thermal insulation and sound insulation pad, and the sound insulation performance of the thermal insulation and sound insulation pad can be effectively improved.

It can be seen from the combination of examples 8 to 9 and comparative example 3 and table 3 that the stress and tear strength at a compression ratio of 50% in examples 8 to 9 are superior to those in comparative example 3, and the impact sound pressure level improvement Δ L in examples 8 to 9 is also higher than that in comparative example 3, which indicates that the mechanical properties and sound insulating properties of the thermal insulation and sound insulation mat can be improved by adding montmorillonite to the thermal insulation and sound insulation mat.

It can be seen by combining example 1 and comparative examples 2 to 4 and table 3 that the stress and tear strength at a compression ratio of 50% in example 1 are better than those in comparative examples 2 to 4, and the impact sound pressure level improvement Δ L in example 1 is also higher than those in comparative examples 2 to 4, which shows that the mechanical properties and sound insulation properties of the thermal insulation and sound insulation pad can be further improved after montmorillonite and fiber are added to the thermal insulation and sound insulation pad at the same time.

It can be seen from the combination of examples 13-15 and Table 3 that the stress, tear strength and impact sound level improvement Δ L of examples 13-15 at a compression ratio of 50% do not change, indicating that the mechanical properties and sound insulation properties of the thermal insulation and sound insulation pad are not significantly affected after the preservative is added to the thermal insulation and sound insulation pad.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.