Hot-melt butyl sealant for self-adhesive carpet and manufacturing method of hot-melt butyl sealant

Abstract

The invention discloses a hot-melt butyl sealant for a self-adhesive carpet and a manufacturing method of the hot-melt butyl sealant in the technical field of hot-melt butyl sealants. The hot-melt butyl sealant is prepared from the following raw materials in parts by weight: 30 to 50 parts of butyl rubber, 10 to 20 parts of plasticizer, 10 to 30 parts of filler, 0.5 to 2 parts of stabilizer, 0.5 to 2 parts of antioxidant, 1 to 5 parts of adhesion promoter and 0 to 5 parts of pigment. By optimizing the formula and selecting high-quality butyl rubber and proper plasticizer and filler, the sealant disclosed by the invention is remarkably improved in the aspects of aging resistance, temperature resistance and adhesion, and is suitable for a more harsh environment; by adopting environment-friendly materials and a production process, the use and emission of harmful substances are reduced, the environment-friendly trend of the current market is met, and the environment-friendly material is suitable for occasions with relatively high environmental requirements; the improved production process, such as automatic mixing equipment and a real-time quality monitoring system, improves the continuity and stability of production, shortens the production cycle, and reduces the labor cost.

Description

Technical Field

[0001] The invention relates to the technical field of hot-melt butyl sealants, in particular to a hot-melt butyl sealant for self-adhesive carpets and a preparation method thereof. Background Art

[0002] Butyl hot melt sealant is made of butyl rubber as the base material, with appropriate amount of reinforcing agent and tackifier added. This product has excellent resistance to UV aging, extremely low water vapor permeability and good bonding strength to glass and metal.

[0003] With the development of the construction industry, floor decoration materials such as carpets are increasingly used. In order to improve the installation efficiency and service life of carpets, a layer of adhesive is usually applied on the back of the carpet to achieve good adhesion to the floor. However, traditional adhesives have problems such as poor environmental performance, insufficient bonding strength or inconvenient construction. Therefore, it is of great practical significance to develop a new type of environmentally friendly, efficient and easy-to-construct self-adhesive carpet adhesive. Summary of the invention

[0004] The object of the present invention is to provide a hot-melt butyl sealant for self-adhesive carpet and a method for manufacturing the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a hot-melt butyl sealant for self-adhesive carpets, wherein the raw material formula of the hot-melt butyl sealant for self-adhesive carpets comprises the following raw materials in parts by weight: 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter, and 0-5 parts of pigment.

[0006] As a further solution of the present invention: the butyl rubber is a product of medium molecular weight grade, and the plasticizer is a mixture of cyclohexane oil and paraffin oil.

[0007] As a further solution of the present invention: the stabilizer is a mixture of metal oxides and organic tin compounds, and the antioxidant is a mixture of phenols, amines and phosphates.

[0008] A method for manufacturing a hot-melt butyl sealant for a self-adhesive carpet comprises the above-mentioned hot-melt butyl sealant for a self-adhesive carpet and the following steps:

[0009] S100: Raw material preparation: Take 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter, 0-5 parts of pigment, and ensure the purity and accurate proportion of all chemical raw materials;

[0010] S200: Raw material pretreatment: Pre-treat the raw materials, remove impurities, crush and screen all the raw materials, and ensure the proportion after screening;

[0011] S300: Mixing and heating process: Use efficient mixing equipment to mix the raw materials, control the heating temperature between 120-150℃, and gradually increase the temperature to make the materials gradually melt and react;

[0012] S400: Adding additives and pigments: After the mixture reaches the appropriate temperature and viscosity, antioxidants, stabilizers and adhesion promoters are gradually added to ensure that the additives are evenly dispersed, and pigments are added to adjust the color of the product while ensuring the dispersion and stability of the pigments;

[0013] S500: Cooling and molding: Use rapid cooling technology to speed up the cooling of the product from high temperature to room temperature, improve production efficiency, and select the appropriate molding method according to the product use to ensure that the shape and size of the sealant meet the application requirements.

[0014] S600: Quality inspection and packaging: Carry out quality inspection on products after production, including adhesion, aging resistance and mechanical strength, to ensure that the products meet the standards, and use suitable packaging materials, including aluminum foil bags or moisture-proof barrels, to package and transport the products after quality inspection.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by optimizing the formula and selecting high-quality butyl rubber and suitable plasticizers and fillers, the sealant of the present invention has significantly improved aging resistance, temperature resistance and adhesion, and is suitable for more demanding environments; the present invention adopts environmentally friendly materials and production processes, reduces the use and emission of harmful substances, conforms to the current market environmental protection trend, and is suitable for occasions with high environmental requirements; improved production processes, such as automated mixing equipment and real-time quality monitoring systems, improve the continuity and stability of production, shorten the production cycle, and reduce labor costs; due to its excellent performance, the sealant of the present invention can be widely used in multiple fields such as construction, automobiles, electronics, etc., to meet the needs of different industries for high-performance sealing materials; the hot-melt construction method makes the sealant easy to apply and cure, which provides great convenience for construction, especially in complex or difficult-to-access areas; by optimizing the formula and production process, the raw material and production costs are reduced, while the performance and service life of the product are improved, providing a higher cost-effectiveness ratio. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In an embodiment of the present invention, a hot-melt butyl sealant for a self-adhesive carpet is provided. The raw material formula of the hot-melt butyl sealant for the self-adhesive carpet includes the following raw materials in parts by weight: 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter, and 0-5 parts of pigment.

[0018] The butyl rubber is a product of medium molecular weight, and the plasticizer is a mixture of cyclohexane oil and paraffin oil.

[0019] The stabilizer is a mixture of metal oxides and organic tin compounds, and the antioxidant is a mixture of phenols, amines and phosphates.

[0020] A method for manufacturing a hot-melt butyl sealant for a self-adhesive carpet comprises the above-mentioned hot-melt butyl sealant for a self-adhesive carpet and the following steps:

[0021] S100: Raw material preparation: Take 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter, 0-5 parts of pigment, and ensure the purity and accurate proportion of all chemical raw materials;

[0022] S200: Raw material pretreatment: Pre-treat the raw materials, remove impurities, crush and screen all the raw materials, and ensure the proportion after screening;

[0023] S300: Mixing and heating process: Use efficient mixing equipment to mix the raw materials, control the heating temperature between 120-150℃, and gradually increase the temperature to make the materials gradually melt and react;

[0024] S400: Adding additives and pigments: After the mixture reaches the appropriate temperature and viscosity, antioxidants, stabilizers and adhesion promoters are gradually added to ensure that the additives are evenly dispersed, and pigments are added to adjust the color of the product while ensuring the dispersion and stability of the pigments;

[0025] S500: Cooling and molding: Use rapid cooling technology to speed up the cooling of the product from high temperature to room temperature, improve production efficiency, and select the appropriate molding method according to the product use to ensure that the shape and size of the sealant meet the application requirements.

[0026] S600: Quality inspection and packaging: Carry out quality inspection on products after production, including adhesion, aging resistance and mechanical strength, to ensure that the products meet the standards, and use suitable packaging materials, including aluminum foil bags or moisture-proof barrels, to package and transport the products after quality inspection.

[0027] Refer to the preparation method and preparation steps of the hot melt butyl sealant for self-adhesive carpets, and carry out the following experimental proportions, as follows:

[0028] Example 1: Select butyl rubber: 40 parts, plasticizer (naphthenic oil): 10 parts, filler (white carbon black): 20 parts, stabilizer (zinc oxide): 1.5 parts, antioxidant (phenol): 1.0 parts, adhesion promoter: 3 parts, pigment: 2 parts;

[0029] Example 2: Select butyl rubber: 35 parts, plasticizer (paraffin oil): 15 parts, filler (calcium carbonate): 25 parts, stabilizer (organic tin compound): 1.0 parts, antioxidant (amine): 1.5 parts, adhesion promoter: 4 parts, pigment: 3 parts;

[0030] Example 3: Butyl rubber: 38 parts, plasticizer (half of naphthenic oil and half of paraffin oil): 12 parts, filler (half of white carbon black and half of calcium carbonate): 17 parts, stabilizer (half of zinc oxide and half of organic tin compound): 1.25 parts, antioxidant (half of phenols and half of amines): 1.25 parts, adhesion promoter: 3.5 parts, pigment: 2.5 parts;

[0031] Example 4: butyl rubber: 45 parts, plasticizer (naphthenic oil): 8 parts, filler (white carbon black): 15 parts, stabilizer (zinc oxide): 2 parts, antioxidant (phenol): 0.5 parts, adhesion promoter: 2 parts, pigment: 1 part;

[0032] Example 5: butyl rubber: 30 parts, plasticizer (paraffin oil): 20 parts, filler (calcium carbonate): 20 parts, stabilizer (organic tin compound): 1 part, antioxidant (amine): 1 part, adhesion promoter: 5 parts, pigment: 4 parts;

[0033] Example 6: Butyl rubber: 40 parts, plasticizer (half of naphthenic oil and half of paraffin oil): 14 parts, filler (half of white carbon black and half of calcium carbonate): 18 parts, stabilizer (half of zinc oxide and half of organic tin compound): 1.75 parts, antioxidant (half of phenols and half of amines): 1.25 parts, adhesion promoter: 3.5 parts, pigment: 2.5 parts;

[0034] Example 7: Butyl rubber: 40 parts, plasticizer (half of cyclohexane oil and paraffin oil): 14 parts, filler (half of white carbon black and calcium carbonate): 18 parts, stabilizer (half of zinc oxide and organic tin compound): 1.75 parts, antioxidant (half of phenols and half of amines): 1.25 parts, adhesion promoter: 3.5 parts, pigment: 2.5 parts.

[0035] When making the above formula ratio, the mechanical strength and heat resistance, flexibility, adhesion, comprehensive performance and filler of the hot-melt butyl sealant for self-adhesive carpet are different, which will change the performance of the hot-melt butyl sealant.

[0036] The hot melt butyl sealant for self-adhesive carpets prepared in the above embodiment is suitable for different usage scenarios such as high temperature resistance, high elasticity, good bonding performance, and variable application environments. At the same time, diatomaceous earth is added as a filler to improve the adsorption and thermal insulation properties of the sealant, and is suitable for applications requiring these special properties.

[0037] Therefore, different mixing ratios are proposed according to different usage scenarios to ensure that the hot-melt butyl sealant for self-adhesive carpets produced can better adapt to its usage scenarios and improve the actual use of the hot-melt butyl sealant for self-adhesive carpets.

[0038] According to the ratio scheme and product production raw materials mentioned in the above embodiments, the above materials are used to produce hot-melt butyl sealant for self-adhesive carpet according to the production method described in the present invention, and the effect of the hot-melt butyl sealant for self-adhesive carpet after production is verified.

[0039] The effect verification includes bonding strength, aging resistance, flexibility, environmental protection and cost-effectiveness, which are directly related to the use effect of hot-melt butyl sealant for self-adhesive carpets and the production cost direction of the enterprise.

[0040] The hot melt butyl sealant for self-adhesive carpet was mixed according to the above-mentioned various schemes, and the effects of the mixed hot melt butyl sealants were compared. The comparison results are shown in Table 1:

[0041] Hot Melt Adhesive Bonding strength Aging resistance Flexibility Environmental protection Cost-effectiveness Embodiment 1 4.0 3.8 3.7 4.2 3.9 Embodiment 2 3.5 4.0 4.5 4.3 4.1 Embodiment 3 4.2 4.1 4.0 4.4 4.0 Embodiment 4 4.5 4.2 3.5 4.5 3.7 Embodiment 5 3.8 3.9 4.6 4.0 4.2 Embodiment 6 4.3 4.3 4.2 4.4 4.3 Embodiment 7 4.1 4.0 3.8 4.3 3.8

[0042] Table 1

[0043] In order to provide a comprehensive performance evaluation, we will conduct a comprehensive comparison based on the seven examples mentioned above. These examples have different focuses, covering different formulation adjustments, such as the types and proportions of plasticizers, fillers, stabilizers and adhesion promoters, as well as special additives such as pigments and diatomaceous earth. The following is a detailed comparison report:

[0044] Bonding strength: Examples 4 and 6 showed relatively high bonding strength, indicating that increasing the proportion of specific components can effectively improve this performance index.

[0045] Aging resistance: Examples 3 and 6 performed better in aging resistance, which shows that the long-term durability of the product can be optimized through reasonable proportioning.

[0046] Flexibility: Example 5 has the best flexibility, which is related to the use of a high proportion of plasticizer. In the actual mixing process, the mixing and mixing can be carried out according to the use and use environment of the hot melt butyl sealant.

[0047] Environmental protection: Example 4 and Example 7 scored high in environmental protection, indicating that the optimization of environmentally friendly materials can improve the overall environmental performance of the product.

[0048] Cost-effectiveness: Example 6 shows good cost-effectiveness while maintaining high performance, which is an important consideration for commercial production.

[0049] In summary, Example 6 provides the best comprehensive performance, especially balanced performance in key performance indicators. The formula of Example 6 may be the most ideal choice in practical applications because it not only guarantees the performance of the product, but also takes cost-effectiveness into consideration, which is crucial for market competitiveness.

[0050] When the hot-melt butyl sealant is used to produce the self-adhesive carpet mentioned in the present invention, it is found that the following situations may occur during the production of the hot-melt butyl sealant:

[0051] Bubble problem: Bubbles are found in the product during the mixing process, which may be due to the introduction of air during mixing or excessive water content in the raw materials.

[0052] Unstable performance: After the proportioning is completed, it is found that the product performance is unstable after the same amount of raw materials are proportioned.

[0053] Uneven pigment dispersion: During the proportioning process, in step S400, after adding pigment to the product, there will be a problem of pigment dispersion.

[0054] The following solutions are proposed for the problems that arise during the production of the above-mentioned hot-melt butyl sealant for self-adhesive carpets:

[0055] In order to solve the problem of product bubbles in the proportioning process, a vacuum degassing step is added in the proportioning process, and in the raw material preparation process in step S100, the dryness of the raw materials is checked, and strict requirements and inspections are made on the dryness of the raw materials. After improving the dryness of the raw materials and adding the air degassing step, the product bubble problem can be effectively solved.

[0056] When it is found that the new energy of the product fluctuates greatly, check the differences between raw material batches, the calibration and stability of the production equipment, and the changes in ambient temperature and humidity during the proportioning process. During the inspection process, it is found that when the same amount of raw materials are compared, there are differences between the raw materials, and after multiple productions, the production equipment has not been recalibrated, resulting in reduced equipment production stability. In addition, during the production process, the temperature and humidity of the production environment change, which reduces the production of the same amount of raw materials. After proportioning, there are differences in the production results. Therefore, in the actual production process, it is necessary to ensure the consistency of raw materials, the stability of equipment and the maintenance of temperature and humidity in the production environment.

[0057] To address the problem of uneven pigment dispersion, in step S400, the added pigment is pre-treated, that is, the pigment is crushed and finely sieved before being added. After improvements, it was found that when adding the pigment in step S400, the pigment is crushed and finely sieved before being added gradually and evenly. After addition, it was found that the problem of pigment dispersion is effectively avoided. At the same time, in the case of uneven pigment dispersion, a more suitable mixing equipment can be replaced to eliminate the problem of uneven pigment dispersion.

[0058] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0059] The embodiments of the present application are described above, but the present application is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A hot melt butyl sealant for self-adhesive carpet, characterized in that: The raw material formula of the hot-melt butyl sealant for the self-adhesive carpet comprises the following raw materials in parts by weight: 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter and 0-5 parts of pigment.

2. The hot melt butyl sealant for self-adhesive carpet according to claim 1, characterized in that: The butyl rubber is a product of medium molecular weight, and the plasticizer is a mixture of cyclohexane oil and paraffin oil.

3. The hot melt butyl sealant for self-adhesive carpet according to claim 1, characterized in that: The stabilizer is a mixture of metal oxides and organic tin compounds, and the antioxidant is a mixture of phenols, amines and phosphates.

4. A method for manufacturing a hot-melt butyl sealant for self-adhesive carpet according to claim 1, comprising the hot-melt butyl sealant for self-adhesive carpet according to claims 1-3, characterized in that: The steps include: S100: Raw material preparation: Take 30-50 parts of butyl rubber, 10-20 parts of plasticizer, 10-30 parts of filler, 0.5-2 parts of stabilizer, 0.5-2 parts of antioxidant, 1-5 parts of adhesion promoter, 0-5 parts of pigment, and ensure the purity and accurate proportion of all chemical raw materials; S200: Raw material pretreatment: Pre-treat the raw materials, remove impurities, crush and screen all the raw materials, and ensure the proportion after screening; S300: Mixing and heating process: Use efficient mixing equipment to mix the raw materials, control the heating temperature between 120-150℃, and gradually increase the temperature to make the materials gradually melt and react; S400: Adding additives and pigments: After the mixture reaches the appropriate temperature and viscosity, antioxidants, stabilizers and adhesion promoters are gradually added to ensure that the additives are evenly dispersed, and pigments are added to adjust the color of the product while ensuring the dispersion and stability of the pigments; S500: Cooling and molding: Use rapid cooling technology to speed up the cooling of the product from high temperature to room temperature, improve production efficiency, and select the appropriate molding method according to the product use to ensure that the shape and size of the sealant meet the application requirements. S600: Quality inspection and packaging: Carry out quality inspection on products after production, including adhesion, aging resistance and mechanical strength, to ensure that the products meet the standards, and use suitable packaging materials, including aluminum foil bags or moisture-proof barrels, to package and transport the products after quality inspection.