Polyurethane material for dish-washing sponge and preparation method of polyurethane material

Abstract

The invention relates to a polyurethane material and a preparation method thereof, and relates to a polyurethane material, the polyurethane material for the dish-washing sponge comprises a material A and a material B, the material A comprises water and wood pulp in a weight ratio of (50-80): (50-20); the material B is hydrophilic polyurethane; the weight ratio of the material A to the material B is (1-3): 1. The polyurethane material suitable for the dish-washing sponge is prepared through cooperative use of the material A with the specific composition and the material B with the specific composition, and has the characteristics of softness, low hardness and good wear resistance, so that the use comfort of the dish-washing sponge is improved, the service life of the dish-washing sponge is prolonged, and the defects in the prior art are overcome.

Description

Technical Field

[0001] The present invention relates to a polyurethane material, in particular to a polyurethane material for dishwashing sponge and a preparation method thereof. Background Art

[0002] Traditional dishwashing sponges are mostly made of sponge or fiber materials, such as Figure 1 As shown. Although these materials have demonstrated water absorption and cleaning performance to a certain extent, they have also exposed many shortcomings in actual application. Specifically, dishwashing sponges made of sponges and fiber materials are often easily damaged during use and produce debris, which not only affects the service life of the dishwashing sponge, but may also cause secondary contamination of the washed dishes. In addition, due to their structural characteristics, these materials are often difficult to clean thoroughly and are prone to residual food residues and detergents, thus becoming a breeding ground for bacteria and posing a potential threat to the health of users.

[0003] In view of the above problems, the market urgently needs a new material to replace traditional sponges or fiber materials to improve the performance and user experience of dishwashing sponges. As an innovative material, hydrophilic polyurethane foam is gradually emerging due to its unique physical and chemical properties. Hydrophilic polyurethane foam not only has excellent water absorption, can quickly absorb and lock in moisture, improving cleaning efficiency; at the same time, it also exhibits extremely high durability. Even with long-term use and frequent scrubbing, it can maintain its structural integrity and is not easy to break or shed. More importantly, hydrophilic polyurethane foam is easy to clean and can easily remove residual stains and detergents, effectively preventing bacterial growth, thereby ensuring the hygiene and safety of dishwashing sponges.

[0004] Therefore, the development of a dishwashing sponge material based on hydrophilic polyurethane foam to solve the problems of traditional dishwashing sponge being easily damaged and difficult to clean is of great significance and has broad market prospects for improving the overall performance of dishwashing sponge products and meeting consumers' pursuit of high-quality and healthy lifestyles. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a polyurethane material for dishwashing sponge and a preparation method thereof.

[0006] In a first aspect, the present invention provides a polyurethane material for dishwashing sponge, wherein the polyurethane material for dishwashing sponge comprises material A and material B;

[0007] The material A comprises water and wood pulp in a weight ratio of (50-80):(50-20);

[0008] The material B includes hydrophilic polyurethane;

[0009] The weight ratio of the material A to the material B is (1-3):1.

[0010] Furthermore, the material A comprises water and wood pulp in a weight ratio of 70:30.

[0011] Furthermore, the B material includes hydrophilic polyurethane. Furthermore, the weight ratio of the A material to the B material is 1.4286:1.

[0012] In a second aspect, the present invention provides a method for preparing a polyurethane material for dishwashing sponge, the preparation method comprising the following steps:

[0013] Stirring the components of the material A to obtain material A;

[0014] Performing a second stirring on the components of the material B to obtain material B;

[0015] The material A and the material B are subjected to a third stirring to obtain a mixture;

[0016] The mixture is injected into a mold for foaming, and then cooled to room temperature to obtain a foam body;

[0017] The foam body is sliced ​​and baked to obtain the polyurethane material for dishwashing sponge.

[0018] Furthermore, the working condition parameters of the first stirring include: the temperature of material A is 5℃~30℃, the stirring speed is 500~1000rpm, and the time is 2~5min; the working condition parameters of the second stirring include: the temperature of material B is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 10~20min; the working condition parameters of the third stirring include: the temperature is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 30s~120s.

[0019] Furthermore, the foaming working condition parameters include: temperature of 20° C. to 30° C., and time of 15 to 30 minutes.

[0020] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0021] An embodiment of the present invention provides a polyurethane material for dishwashing sponge. The present invention produces a polyurethane material suitable for dishwashing sponge by combining a material A of a specific composition and a material B of a specific composition. The polyurethane material has the characteristics of softness, low hardness and good wear resistance, thereby improving the comfort and service life of the dishwashing sponge and making up for the shortcomings of the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a schematic diagram of the structure of dishwashing sponge.

[0025] Figure 2 A schematic flow chart of a method for preparing a polyurethane material for dishwashing sponge provided in an embodiment of the present invention.

[0026] Figure 3 This is the composition information of the hydrophilic polyurethane in the embodiments of the present invention. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0029] In a first aspect, the present invention provides a polyurethane material for dishwashing sponge, wherein the polyurethane material for dishwashing sponge comprises material A and material B;

[0030] The material A comprises water and wood pulp in a weight ratio of (65-75):(25-35);

[0031] The material B includes hydrophilic polyurethane;

[0032] The weight ratio of the material A to the material B is (1-2):1.

[0033] An embodiment of the present invention provides a polyurethane material for dishwashing sponge. The present invention produces a polyurethane material suitable for dishwashing sponge by combining a material A of a specific composition and a material B of a specific composition. The polyurethane material has the characteristics of softness, low hardness and good wear resistance, thereby improving the comfort and service life of the dishwashing sponge and making up for the shortcomings of the existing technology.

[0034] The wood pulp in the present invention is a cellulose pulp extracted from wood by chemical or mechanical methods, and can be prepared by homemade methods disclosed in the prior art or directly using commercially available products.

[0035] The hydrophilic polyurethane in the present invention is a commercially available product of Dow Chemical (Shanghai) Co., Ltd., and its product composition information is as follows: Figure 3 shown.

[0036] In some specific embodiments, the A material includes water and wood pulp in a weight ratio of 70:30.

[0037] In some specific embodiments, the material B is hydrophilic polyurethane.

[0038] In some specific embodiments, the weight ratio of the A material to the B material is 1.4286:1.

[0039] In a second aspect, the present invention provides a method for preparing a polyurethane material for dishwashing sponge, such as Figure 2 As shown, the preparation method comprises the following steps:

[0040] Stirring the components of the material A to obtain material A;

[0041] Performing a second stirring on the components of the material B to obtain material B;

[0042] The material A and the material B are subjected to a third stirring to obtain a mixture;

[0043] The mixture is injected into a mold for foaming, and then cooled to room temperature to obtain a foam body;

[0044] The foam body is sliced ​​and baked to obtain the polyurethane material for dishwashing sponge.

[0045] In some specific embodiments, the working condition parameters of the first stirring include: the temperature of material A is 5℃~30℃, the stirring speed is 500~1000rpm, and the time is 2~5min; the working condition parameters of the second stirring include: the temperature of material B is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 10~20min; the working condition parameters of the third stirring include: the temperature is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 30s~120s.

[0046] In some specific embodiments, the foaming working condition parameters include: temperature of 20° C. to 30° C., and time of 15 to 30 minutes.

[0047] It should be noted that the raw material components involved in the polyurethane material for dishwashing sponge and the preparation method thereof provided in the embodiments of the present invention, unless otherwise specified or described, can be directly purchased as commercial products or made by oneself according to existing preparation methods; at the same time, the operating steps involved in the preparation method, unless otherwise specified or described, can be carried out according to existing methods for preparing polyurethane materials for dishwashing sponge or using existing equipment, and the present invention document will not elaborate on them.

[0048] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended to illustrate the present invention only and are not intended to limit the scope of the invention. The experimental methods in the following examples where specific conditions are not specified are generally measured in accordance with national standards. If there are no corresponding national standards, then the methods are carried out in accordance with general international standards, conventional conditions, or the conditions recommended by the manufacturer.

[0049] Example 1

[0050] This example provides a polyurethane material for dishwashing sponge, which is made of material A and material B; material A is composed of water and wood pulp in a weight ratio of 70:30; material B is hydrophilic polyurethane; the weight ratio of material A to material B is 1.4286:1.

[0051] The preparation method of the polyurethane material for dishwashing sponge comprises the following steps:

[0052] Stirring the components of the material A to obtain material A;

[0053] Performing a second stirring on the components of the material B to obtain material B;

[0054] The material A and the material B are subjected to a third stirring to obtain a mixture;

[0055] The mixture is injected into a mold for foaming, and then cooled to room temperature to obtain a foam body;

[0056] Slicing and baking the foam to obtain the polyurethane material for dishwashing sponge;

[0057] Among them, the working condition parameters of the first stirring include: the temperature of material A is 20°C, the stirring speed is 800rpm, and the time is 2 to 5 minutes; the working condition parameters of the second stirring include: the temperature of material B is 25°C, the stirring speed is 800rpm, and the time is 15 minutes; the working condition parameters of the third stirring include: the temperature is 25°C, the stirring speed is 700rpm, and the time is 60 seconds; the working condition parameters of the foaming include: the temperature is 25°C and the time is 20 minutes.

[0058] Example 2

[0059] This example provides a polyurethane material for dishwashing sponge, which is made of material A and material B; the material A is composed of water and wood pulp in a weight ratio of 65:35; the material B is a hydrophilic polyurethane; the weight ratio of the material A to the material B is 2:1.

[0060] The preparation method of the polyurethane material for dishwashing sponge is the same as that in Example 1.

[0061] Example 3

[0062] This example provides a polyurethane material for dishwashing sponge, which is made of material A and material B; the material A is composed of water and wood pulp in a weight ratio of 75:25; the material B is a hydrophilic polyurethane; the weight ratio of the material A to the material B is 1:1.

[0063] The preparation method of the polyurethane material for dishwashing sponge is the same as that in Example 1.

[0064] Comparative Example 1

[0065] This example provides a polyurethane material for dishwashing sponge and a preparation method thereof. The only difference from Example 1 is that the weight ratio of the material A to the material B is 4:1; the remaining steps and parameters are the same.

[0066] Comparative Example 2

[0067] This example provides a polyurethane material for dishwashing sponge and a preparation method thereof. The only difference from Example 1 is that the material A is composed of water and wood pulp in a weight ratio of 55:45; the remaining steps and parameters are the same.

[0068] Comparative Example 3

[0069] This example provides a polyurethane material for dishwashing sponge and its preparation method. The only difference from Example 1 is that the material B is composed of HYPOL TM JM 5002 prepolymer and VORAMER TMMN 6100 prepolymer composition; the remaining steps and parameters are the same.

[0070] Various embodiments of the present invention may be presented in the form of a range; it should be understood that the description in a range format is only for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention; therefore, the range description should be considered to have specifically disclosed all possible subranges and single numerical values ​​within the range. For example, the description of a range from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. In addition, whenever a numerical range is indicated herein, it is intended to include any cited numeral (fractional or integer) within the indicated range.

[0071] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A polyurethane material for dishwashing sponge, characterized in that: The polyurethane material for dishwashing sponge comprises material A and material B; The material A comprises water and wood pulp in a weight ratio of (50-80):(50-20); The material B includes hydrophilic polyurethane; The weight ratio of the material A to the material B is (1-3):

1.

2. The polyurethane material for dishwashing sponge according to claim 1, characterized in that: The material A includes water and wood pulp in a weight ratio of 70:

30.

3. The polyurethane material for dishwashing sponge according to claim 1, characterized in that: The material B is hydrophilic polyurethane.

4. The polyurethane material for dishwashing sponge according to claim 1, characterized in that: The weight ratio of the material A to the material B is 1.4286:

1.

5. A method for preparing the polyurethane material for dishwashing sponge according to any one of claims 1 to 4, characterized in that: The preparation method comprises the following steps: The components in the material A are first stirred to obtain material A; Stirring the hydrophilic polyurethane in the material B for the second time to obtain material B; The material A and the material B are subjected to a third stirring to obtain a mixture; The mixture is injected into a mold for foaming, and then cooled to room temperature to obtain a foam body; The foam body is sliced ​​and baked to obtain the polyurethane material for dishwashing sponge.

6. The method for preparing the polyurethane material for dishwashing sponge according to claim 5, characterized in that: The working condition parameters of the first stirring include: the temperature of material A is 5℃~30℃, the stirring speed is 500~1000rpm, and the time is 2~5min; the working condition parameters of the second stirring include: the temperature of material B is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 10~20min; the working condition parameters of the third stirring include: the temperature is 20℃~30℃, the stirring speed is 500~1000rpm, and the time is 30s~120s.

7. The method for preparing a polyurethane material for dishwashing sponge according to claim 5, characterized in that: The foaming working condition parameters include: temperature of 20° C. to 30° C., and time of 15 to 30 minutes.

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