阅读说明：本技术 一种橡胶硅藻泥地垫及其制备方法 (Rubber diatom ooze ground mat and preparation method thereof ) 是由 胡江武 于 2020-12-21 设计创作，主要内容包括：本发明涉及一种橡胶硅藻泥地垫及其制备方法。所述橡胶硅藻泥地垫包括由下至上分层设置的底层、中层和表层；所述底层包括如下重量份的原料：天然橡胶35～45份、硅藻土7～11份、碳酸钙50～60份、白油2～4份、树脂1～3份；所述中层包括如下重量份的原料：涤纶纤维2.5～4.5份；所述表层包括如下重量份的原料：涤纶纤维2.5～4.5份。所述橡胶硅藻泥地垫,经检测后在撕裂强度、硬度、拉伸强度、拉断伸长率和回弹率方面均达到较高水平,且各个组分在合理的配伍之后增强了材料的韧性、弹性和强度,能够有效改善传统硅藻泥易碎、粗糙、生硬等多种问题；所述制备方法简单易控,有利于规模化产出。(The invention relates to a rubber diatom ooze ground mat and a preparation method thereof. The rubber diatom ooze ground mat comprises a bottom layer, a middle layer and a surface layer which are arranged from bottom to top in a layered mode; the bottom layer comprises the following raw materials in parts by weight: 35-45 parts of natural rubber, 7-11 parts of diatomite, 50-60 parts of calcium carbonate, 2-4 parts of white oil and 1-3 parts of resin; the middle layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber; the surface layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber. The rubber diatom ooze ground mat achieves higher levels in the aspects of tear strength, hardness, tensile strength, elongation at break and resilience rate after detection, and all the components enhance the toughness, elasticity and strength of the material after reasonable compatibility, so that various problems of fragility, roughness, hardness and the like of the traditional diatom ooze can be effectively improved; the preparation method is simple and easy to control, and is beneficial to large-scale production.)

1. A rubber diatom ooze ground mat is characterized by comprising a bottom layer, a middle layer and a surface layer which are arranged from bottom to top in a layered mode; the bottom layer comprises the following raw materials in parts by weight: 35-45 parts of natural rubber, 7-11 parts of diatomite, 50-60 parts of calcium carbonate, 2-4 parts of white oil and 1-3 parts of resin; the middle layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber; the surface layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber.

2. The rubber diatom ooze floor mat of claim 1, comprising a bottom layer, a middle layer and a surface layer arranged in layers from bottom to top; the bottom layer comprises the following raw materials in parts by weight: 40 parts of natural rubber, 9 parts of diatomite, 55 parts of calcium carbonate, 3 parts of white oil and 2 parts of resin; the middle layer comprises the following raw materials in parts by weight: 3.5 parts of polyester fiber; the surface layer comprises the following raw materials in parts by weight: 3.5 parts of polyester fiber.

3. A rubber diatom ooze floor mat according to claim 1 or 2, wherein the natural rubber has a cis-1, 4-polyisoprene content of 91-95 wt.% and an ash content of 1.0 wt.%.

4. The rubber diatom ooze floor mat of claim 1 or 2, wherein the diatomaceous earth has a particle size of 350-500 mesh.

5. A rubber diatom ooze floor mat according to claim 1 or 2, wherein said resin is a polyurethane resin or an ABS resin.

6. The rubber diatom ooze floor mat of claim 1 or 2, wherein the polyester fibers have a strength of 5.6-8.0 cN/dtex.

7. A method of producing a rubber diatom ooze floor mat according to any one of claims 1 to 6, comprising the steps of:

(1) mixing the raw materials of the bottom layer, and then mixing to obtain mixed rubber;

(2) sequentially gluing, vulcanizing and foaming the mixed rubber obtained in the step (1), and bonding the mixed rubber with the middle-layer polyester fiber to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer and the surface layer polyester fiber of the semi-finished product of the rubber diatom ooze floor mat obtained in the step (2) to obtain the rubber diatom ooze floor mat.

8. The method for producing a rubber-based diatom ooze floor mat according to claim 7, wherein in step (1), the roll temperature during mixing is 40-50 ℃ and the roll speed is 16-18 r/min.

9. The method for preparing a rubber diatom ooze ground mat according to claim 7, wherein in step (2), the heating temperature is 150-160 ℃ and the fermentation time is 68-76 h in the gluing process.

10. The method for preparing a rubber diatom ooze floor mat according to claim 7, wherein in step (3), the combined pressure is 1.2-1.8 MPa.

Technical Field

The invention belongs to the field of household articles, and particularly relates to a rubber diatom ooze ground mat and a preparation method thereof.

Background

The diatom ooze ground mat is made of diatomite. Diatomite is a natural mineral substance, the main component of the diatomite is silicic acid, and the diatomite has a special microporous structure, and when the indoor humidity rises, the ultramicropore can automatically absorb the moisture in the air. Therefore, the ground mat made of the diatomite has stronger water absorption, is usually used in a bathroom to absorb the water on the soles of people after bath, is safe and anti-skid, and is very convenient.

However, after long-term use, the chapping and breaking of the diatomite material are often aggravated, and the mechanical properties of the diatomite material still cannot meet the requirements at the end.

Therefore, the technical scheme of the invention is provided.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a rubber diatom ooze ground mat and a preparation method thereof. The rubber diatom ooze ground mat achieves higher levels in the aspects of tear strength, hardness, tensile strength, elongation at break and resilience rate after detection, and all the components enhance the toughness, elasticity and strength of the material after reasonable compatibility, so that various problems of fragility, roughness, hardness and the like of the traditional diatom ooze can be effectively improved; the preparation method is simple and easy to control, and is beneficial to large-scale production.

The scheme of the invention is that a rubber diatom ooze ground mat is provided, which comprises a bottom layer, a middle layer and a surface layer which are arranged from bottom to top in a layered manner; the bottom layer comprises the following raw materials in parts by weight: 35-45 parts of natural rubber, 7-11 parts of diatomite, 50-60 parts of calcium carbonate, 2-4 parts of white oil and 1-3 parts of resin; the middle layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber; the surface layer comprises the following raw materials in parts by weight: 2.5-4.5 parts of polyester fiber.

Preferably, the rubber diatom ooze ground mat comprises a bottom layer, a middle layer and a surface layer which are arranged from bottom to top in a layered manner; the bottom layer comprises the following raw materials in parts by weight: 40 parts of natural rubber, 9 parts of diatomite, 55 parts of calcium carbonate, 3 parts of white oil and 2 parts of resin; the middle layer comprises the following raw materials in parts by weight: 3.5 parts of polyester fiber; the surface layer comprises the following raw materials in parts by weight: 3.5 parts of polyester fiber.

Preferably, the natural rubber contains 91-95 wt% of cis-1, 4-polyisoprene and less than or equal to 1.0 wt% of ash content.

Preferably, the particle size of the diatomite is 350-500 meshes.

Preferably, the resin is a polyurethane resin or an ABS resin.

Preferably, the strength of the polyester fiber is 5.6-8.0 cN/dtex.

The invention also provides a preparation method of the rubber diatom ooze ground mat, which comprises the following steps:

(1) mixing the raw materials of the bottom layer, and then mixing to obtain mixed rubber;

(2) sequentially gluing, vulcanizing and foaming the mixed rubber obtained in the step (1), and bonding the mixed rubber with the middle-layer polyester fiber to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer and the surface layer polyester fiber of the semi-finished product of the rubber diatom ooze floor mat obtained in the step (2) to obtain the rubber diatom ooze floor mat.

Preferably, in the step (1), the roll temperature during mixing is 40-50 ℃, and the roll speed is 16-18 r/min.

Preferably, in the step (2), the heating temperature is 150-160 ℃ and the fermentation time is 68-76 h in the gluing process.

Preferably, in the step (3), the composite pressure is 1.2-1.8 MPa.

The invention has the beneficial effects that:

1. the rubber diatom ooze ground mat disclosed by the invention achieves higher levels in the aspects of tear strength, hardness, tensile strength, elongation at break and resilience rate after detection, and the toughness, elasticity and strength of the material are enhanced after reasonable compatibility of the components, so that various problems of fragility, roughness, hardness and the like of the traditional diatom ooze can be effectively improved.

2. The preparation method of the rubber diatom ooze ground mat is simple and easy to control in process and beneficial to large-scale production.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example 1

The embodiment provides a preparation method of a rubber diatom ooze ground mat, which comprises the following steps:

(1) mixing 35kg of natural rubber (the cis-1, 4-polyisoprene content is 91 wt.%, the ash content is 1.0 wt.%), 7kg of diatomite (the average particle size is 350 meshes), 50kg of calcium carbonate, 2kg of white oil and 1kg of polyurethane resin uniformly under the condition of 40r/min, and then mixing under the conditions that the roller temperature is 40 ℃ and the roller speed is 16r/min to obtain mixed rubber;

(2) putting the rubber compound obtained in the step (1) into a rubber beating machine, heating to 150 ℃, maintaining fermentation for 68 hours, vulcanizing and foaming, and bonding with 2.5kg of middle-layer polyester fiber (the strength is 5.6cN/dtex) to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer of the semi-finished product of the rubber diatom ooze ground mat obtained in the step (2) with 2.5kg of surface layer polyester fibers (the strength is 5.6cN/dtex) under the condition of 1.2MPa to obtain the rubber diatom ooze ground mat.

Example 2

The embodiment provides a preparation method of a rubber diatom ooze ground mat, which comprises the following steps:

(1) mixing 45kg of natural rubber (95 wt% of cis-1, 4-polyisoprene and 0.8 wt% of ash content), 11kg of diatomite (with the average particle size of 500 meshes), 60kg of calcium carbonate, 4kg of white oil and 3kg of ABS resin uniformly under the condition of 50r/min, and then mixing under the conditions that the roller temperature is 50 ℃ and the roller speed is 18r/min to obtain mixed rubber;

(2) putting the rubber compound obtained in the step (1) into a rubber beating machine, heating to 160 ℃, maintaining fermentation for 76h, vulcanizing and foaming, and bonding with 4.5kg of middle-layer polyester fiber (the strength is 8.0cN/dtex) to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer of the semi-finished product of the rubber diatom ooze ground mat obtained in the step (2) with 4.5kg of surface layer polyester fibers (the strength is 8.0cN/dtex) under the condition of 1.8MPa to obtain the rubber diatom ooze ground mat.

Example 3

The embodiment provides a preparation method of a rubber diatom ooze ground mat, which comprises the following steps:

(1) mixing 40kg of natural rubber (the cis-1, 4-polyisoprene content is 93 wt%, the ash content is 0.9 wt%), 9kg of diatomite (the average particle size is 400 meshes), 55kg of calcium carbonate, 3kg of white oil and 2kg of polyurethane resin uniformly under the condition of 45r/min, and then mixing under the conditions that the roller temperature is 45 ℃ and the roller speed is 17r/min to obtain mixed rubber;

(2) putting the rubber compound obtained in the step (1) into a rubber beating machine, heating to 155 ℃, maintaining fermentation for 72 hours, vulcanizing and foaming, and bonding with 3.5kg of middle-layer polyester fibers (the strength is 6.8cN/dtex) to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer of the semi-finished product of the rubber diatom ooze ground mat obtained in the step (2) with 3.5kg of surface layer polyester fibers (with the strength of 6.8cN/dtex) under the condition of 1.5MPa to obtain the rubber diatom ooze ground mat.

Example 4

The embodiment provides a preparation method of a rubber diatom ooze ground mat, which comprises the following steps:

(1) mixing 35kg of natural rubber (the cis-1, 4-polyisoprene content is 91 wt.%, the ash content is 1.0 wt.%), 11kg of diatomite (the average particle size is 350 meshes), 50kg of calcium carbonate, 4kg of white oil and 1kg of polyurethane resin uniformly under the condition of 50r/min, and then mixing under the conditions that the roller temperature is 40 ℃ and the roller speed is 18r/min to obtain mixed rubber;

(2) putting the rubber compound obtained in the step (1) into a rubber beating machine, heating to 150 ℃, maintaining fermentation for 76h, vulcanizing and foaming, and bonding with 2.5kg of middle-layer polyester fibers (the strength is 8.0cN/dtex) to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer of the semi-finished product of the rubber diatom ooze ground mat obtained in the step (2) with 4.5kg of surface layer polyester fibers (with the strength of 6.8cN/dtex) under the condition of 1.8MPa to obtain the rubber diatom ooze ground mat.

Example 5

The embodiment provides a preparation method of a rubber diatom ooze ground mat, which comprises the following steps:

(1) uniformly mixing 45kg of natural rubber (the cis-1, 4-polyisoprene content is 95 wt%, and the ash content is 0.8 wt%), 7kg of diatomite (the average particle size is 500 meshes), 60kg of calcium carbonate, 2kg of white oil and 3kg of polyurethane resin under the condition of 40r/min, and then mixing under the conditions that the roller temperature is 50 ℃ and the roller speed is 16r/min to obtain mixed rubber;

(2) putting the rubber compound obtained in the step (1) into a rubber beating machine, heating to 160 ℃, maintaining fermentation for 68 hours, vulcanizing and foaming, and bonding with 4.5kg of middle-layer polyester fiber (the strength is 5.6cN/dtex) to obtain a semi-finished product of the rubber diatom ooze floor mat;

(3) and (3) compounding the middle layer of the semi-finished product of the rubber diatom ooze ground mat obtained in the step (2) with 2.5kg of surface layer polyester fibers (the strength is 8.0cN/dtex) under the condition of 1.2MPa to obtain the rubber diatom ooze ground mat.

Comparative example 1

The comparative example provides a preparation method of a rubber diatom ooze ground mat, which is different from the preparation method of example 3 in that no calcium carbonate component is added in the step (1), and the rest components, the amount of the components and the operation steps are the same.

Comparative example 2

The comparative example provides a preparation method of a rubber diatom ooze ground mat, which is different from the preparation method of the example 3 in that the white oil component is not added in the step (1), and the rest components, the using amount of the components and the operation steps are the same.

Comparative example 3

The comparative example provides a preparation method of a rubber diatom ooze ground mat, which is different from the example 3 in that no resin component is added in the step (1), and the rest components, the amount of the components and the operation steps are the same.

Comparative example 4

The comparative example provides a preparation method of a rubber diatom ooze ground mat, and the difference from the example 3 is that the step (3) is not included, namely, the rubber diatom ooze ground mat obtained by the comparative example is only compounded with 1 layer of polyester fibers.

Comparative example 5

The comparative example provides a preparation method of a rubber diatom ooze ground mat, and the difference from the example 3 is that after the step (3), one layer of polyester fiber is continuously compounded, namely the rubber diatom ooze ground mat obtained by the comparative example is compounded with 3 layers of polyester fiber.

In order to show the mechanical properties of the rubber diatom ooze floor mat, the following tests are carried out for verification, and the detection results of the mechanical properties are shown in table 1.

TABLE 1 results of mechanical Properties measurements

(continuation table 1)

Results and discussion:

1. as can be seen from the results of examples 1 to 5, the results of the test items of example 3 are the best, and the comprehensive properties are excellent, so comparative examples 1 to 5 are provided on the basis of example 3.

2. From the results of examples 1 to 5 and comparative examples 1 to 3, it can be seen that when calcium carbonate, white oil or resin is absent in the formulation, the tear strength, shore hardness, tensile strength and elongation at break are all reduced, indicating that the three are indispensable in improving the mechanical strength; it is also noted that, in the absence of white oil, the elongation at break is only 88%, which is much lower than the values of the examples, and it is highly likely that, in the absence of white oil, the homogeneity of the mixing between the components becomes poor, which causes defects in the microphase state and tends to cause stress concentration.

3. From the results of examples 1 to 5 and comparative examples 4 to 5, it can be seen that when only one layer of polyester fiber is provided, the mechanical properties are significantly lower than those of the examples, but when the number of polyester fiber layers is increased to 3, the mechanical properties are not significantly improved, so that the double-layer polyester fiber is most suitable for cost and preparation complexity.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.