High-temperature adhesive sheet for drying room

Abstract

The invention discloses a high-temperature sticky sheet for a drying room, relates to the technical field of drying rooms, and aims to solve the problem that a product which can effectively stick dust for a long time in a high-temperature environment, is environment-friendly and is convenient to clean and maintain is lacked in the current market. The aluminum alloy material comprises 60-70 parts of aluminum; 8 to 15 parts of modified polyacrylate; 8 to 15 parts of polyurethane; 8 to 15 parts of saturated polyester; 0.2 to 1 part of a phosphate coating; 0.1 to 1 part of hydrocinnamic acid ester; and 0.1 to 1 part of aliphatic alkylamine. The model of the high-temperature adhesive sheet for the drying room is DXCD-965N, and the high-temperature adhesive sheet is specially designed for a drying furnace and other high-temperature areas of a coating workshop, has excellent dust adhesion, lasting dust adhesion and environmental protection characteristics, and can effectively solve the problem that dust and impurities in the high-temperature areas affect the paint quality.

Description

Technical Field

[0001] The present invention relates to the technical field of drying rooms, and in particular to a high-temperature adhesive sheet for drying rooms. Background Art

[0002] In high-temperature areas like the paint shop's drying room, dust and other debris easily drift and adhere to the workpiece surface, affecting the quality of the paint base and causing defects. Existing cleaning methods have problems such as low efficiency, incomplete cleaning, and damage to equipment.

[0003] The market currently lacks a product that can effectively stick to dust in a high-temperature environment for a long time, is environmentally friendly, and is easy to clean and maintain. Therefore, the development of a high-performance drying room high-temperature adhesive sheet has important practical significance. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-temperature adhesive sheet for drying rooms. The model of the high-temperature adhesive sheet for drying rooms is DXCD-965N, which is specially designed for drying furnaces and other high-temperature areas in paint shops. It has excellent dust sticking properties, long-lasting dust sticking properties and environmental protection characteristics, and can effectively solve the problem of dust and debris in high-temperature areas affecting paint quality.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] The high-temperature adhesive for drying room is characterized by comprising the following components in parts by weight:

[0007] Aluminum: 60-70 parts;

[0008] Modified polyacrylate: 8-15 parts;

[0009] Polyurethane: 8-15 parts;

[0010] Saturated polyester: 8-15 parts;

[0011] Phosphate layer: 0.2-1 part;

[0012] Hydrocinnamate: 0.1-1 part;

[0013] Aliphatic alkylamine: 0.1-1 part.

[0014] This product has four core components. Specifically, aluminum is made from ultrafine aluminum powder with a purity of at least 99% and a particle size range of 5-15μm. Aluminum powder enhances the structure and adjusts physical properties during high-temperature bonding. Precise purity and particle size requirements ensure product stability and uniformity.

[0015] Modified polyacrylate is modified by introducing hydroxyl and carboxyl groups into the polyacrylate molecular chain, with a glass transition temperature set at 20-30°C. This modification gives the adhesive sheet good adhesion and flexibility, enabling it to perform dust-binding functions under different temperature conditions.

[0016] Polyurethane uses aromatic polyurethane with an isocyanate group content of 8-12%. Polyurethane enhances the wear resistance and chemical stability of the adhesive, extending the product's service life.

[0017] Saturated polyester, preferably with an acid value of 10-20 mgKOH / g and a hydroxyl value of 30-50 mgKOH / g, helps adjust the hardness and flexibility of the adhesive sheet and works synergistically with other ingredients to optimize the overall performance of the product.

[0018] The specific preparation process of this product is to add aluminum powder into the reactor and stir at 30-40℃ for 10-20 minutes;

[0019] Add modified polyacrylate, polyurethane, and saturated polyester in sequence, raise the temperature to 60-80°C, and stir for 30-60 minutes;

[0020] Add the phosphating layer, hydrogenated cinnamate and aliphatic alkylamine, continue stirring for 20-40 minutes, and cool to room temperature to obtain the oven high temperature adhesive product.

[0021] The invention using the above-mentioned technical solution produces a high-temperature adhesive sheet for drying rooms. This sheet has excellent dust adhesion and can effectively absorb falling dust and other debris, causing the dust to adhere to the surface and not be lifted up, thus preventing defects in the paint base. It has long-lasting dust adhesion and can maintain its stickiness for 3-6 months at an operating temperature of 50-170°C. It is environmentally friendly, flame-retardant, anti-static, and does not contain substances banned in paint shops, and will not cause damage such as shrinkage holes to the paint. After heating, it partially becomes sticky and will not flow when placed vertically. After cooling, it becomes solid and does not harden or powderize, making it easy to clean and for equipment maintenance personnel. It can also be handled as a solid material without affecting emissions. In combination with high-temperature tape and adhesive remover, it is easy to replace and clean, and is suitable for high-temperature areas such as electrophoretic ovens, topcoat ovens, sealant ovens, flash dry ovens, and drying ovens in painting shops and molding workshops. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention are further described below with reference to the embodiments.

[0023] Example 1:

[0024] Raw materials preparation:

[0025] Aluminum (purity 99.5%, particle size 10 μm): 60 parts;

[0026] Modified polyacrylate (glass transition temperature 25°C): 10 parts;

[0027] Polyurethane (aromatic, isocyanate group content 10%): 10 parts;

[0028] Saturated polyester (acid value 15 mgKOH / g, hydroxyl value 40 mgKOH / g): 10 parts;

[0029] Phosphate layer (zinc phosphate and manganese phosphate mass ratio 2:1): 0.4 parts;

[0030] 4-Methoxyhydrocinnamate: 0.2 parts;

[0031] n-Dodecylamine: 0.2 parts.

[0032] Preparation method:

[0033] Aluminum powder was added into the reaction kettle and stirred at 35°C for 15 minutes.

[0034] Add modified polyacrylate, polyurethane and saturated polyester in sequence, raise the temperature to 70°C and stir for 45 minutes.

[0035] Add the phosphating layer, 4-methoxyhydrocinnamate and n-dodecylamine, continue stirring for 30 minutes, and cool to room temperature to obtain a drying room high temperature adhesive layer product.

[0036] Example 2:

[0037] Raw materials preparation:

[0038] Aluminum (purity 99%, particle size 5 μm): 70 parts;

[0039] Modified polyacrylate (glass transition temperature 20°C): 8 parts;

[0040] Polyurethane (aromatic, isocyanate group content 8%): 8 parts;

[0041] Saturated polyester (acid value 10 mgKOH / g, hydroxyl value 30 mgKOH / g): 8 parts;

[0042] Phosphate layer (zinc phosphate and manganese phosphate mass ratio 2:1): 0.8 parts;

[0043] 4-Methoxyhydrocinnamate: 0.2 parts;

[0044] n-Dodecylamine: 0.2 parts.

[0045] Preparation method:

[0046] Aluminum powder was added into the reactor and stirred at 30°C for 20 minutes.

[0047] Add modified polyacrylate, polyurethane and saturated polyester in sequence, raise the temperature to 60°C and stir for 60 minutes.

[0048] Add the phosphating layer, 4-methoxyhydrocinnamate and n-dodecylamine, continue stirring for 40 minutes, and cool to room temperature to obtain a drying room high temperature adhesive layer product.

[0049] Example 3

[0050] Raw materials preparation:

[0051] Aluminum (purity 99.8%, particle size 15 μm): 65 parts;

[0052] Modified polyacrylate (glass transition temperature 30°C): 10 parts;

[0053] Polyurethane (aromatic, isocyanate group content 12%): 10 parts;

[0054] Saturated polyester (acid value 20 mgKOH / g, hydroxyl value 50 mgKOH / g): 10 parts;

[0055] Phosphate layer (zinc phosphate and manganese phosphate mass ratio 2:1): 0.6 parts;

[0056] 4-Methoxyhydrocinnamate: 0.2 parts;

[0057] n-Dodecylamine: 0.2 parts.

[0058] The drying room high-temperature adhesive layer products prepared in the above embodiments were subjected to performance tests. The results showed that the products had excellent and long-lasting dust adhesion, meeting the requirement of maintaining adhesion for 3-6 months at an operating temperature of 50-170°C. At the same time, they were environmentally friendly, flame retardant, anti-static, and had no adverse effects on paint. After heating, the adhesive state did not flow, and after cooling, the solid state did not compact or powder, making it easy to clean and maintain.

[0059] The preparation process of high temperature adhesive sheet in drying room includes the following steps:

[0060] Step 1: Pre-stir the aluminum powder. Slowly add the accurately weighed aluminum powder into a clean reactor. Turn on the stirring function of the reactor, set the temperature to 30-40°C, and stir for 10-20 minutes. This step is to make the aluminum powder initially dispersed evenly, laying the foundation for subsequent mixing with other ingredients.

[0061] Step 2: Mix the main ingredients and add the modified polyacrylate, polyurethane, and saturated polyester to the reactor in sequence. Add slowly and evenly to avoid excessive concentration in certain areas. After addition, gradually increase the reactor temperature to 60-80°C while stirring continuously for 30-60 minutes. Within this temperature range and stirring time, the main ingredients can fully interact with each other to form a preliminary stable system.

[0062] Step 3: Add the auxiliary ingredients. Once the main ingredients are evenly mixed, add the phosphate layer, 4-methoxyhydrocinnamate, and n-dodecylamine. Continue stirring for 20-40 minutes to fully incorporate all ingredients and ensure consistent product performance.

[0063] Step 4: Cooling and Packaging: After stirring is complete, stop heating and allow the contents of the reactor to cool naturally to room temperature. During the cooling process, closely monitor the contents. After cooling is complete, package the prepared oven-heated adhesive sheets in sealed packaging to prevent contact with air and moisture during storage and transportation, which could affect their performance.

[0064] In the above preparation process, especially the quality control link, through precise and strict preparation process technology, it is possible to produce high-performance drying room high-temperature adhesive sheets to meet the cleaning needs of high-temperature areas such as paint shops.

[0065] Specifically, first, raw material testing: before the raw materials are purchased and put into storage, each batch of raw materials will be strictly tested to ensure that its various indicators meet the above requirements.

[0066] Second, process monitoring: During the preparation process, regularly check parameters such as the temperature and stirring speed of the materials in the reactor to ensure that they meet process requirements. At the same time, observe the appearance and viscosity of the materials, and make timely adjustments if any abnormalities are found.

[0067] Third, finished product inspection, comprehensive performance testing of the packaged finished products, including dust stickiness, persistent dust stickiness, flame retardancy, anti-static properties, etc., to ensure that the product quality meets the standards.

[0068] The above describes in detail the high-temperature adhesive sheet for drying ovens provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the claims of the present invention.

Claims

1. Drying room high temperature adhesive film, characterized in that, Calculated by weight, it includes the following components: Aluminum: 60-70 parts; Modified polyacrylate: 8-15 parts; Polyurethane: 8-15 parts; Saturated polyester: 8-15 parts; Phosphate layer: 0.2-1 part; Hydrocinnamate: 0.1-1 part; Aliphatic alkylamine: 0.1-1 part.

2. The high temperature adhesive for drying room according to claim 1, characterized in that: Calculated by weight, it includes the following components: Aluminum: 65 parts; Modified polyacrylate: 10 parts; Polyurethane: 10 parts; Saturated polyester: 10 parts; Phosphate layer: 0.4 parts; Hydrocinnamate: 0.2 parts; Aliphatic alkylamine: 0.2 parts.

3. The high temperature adhesive for drying room according to claim 2, characterized in that: The aluminum is ultrafine aluminum powder with a purity of not less than 99% and a particle size range of 5-15 μm.

4. The high temperature adhesive for drying room according to claim 3, characterized in that: The modified polyacrylate is modified by introducing hydroxyl groups and carboxyl groups into the polyacrylate molecular chain, and the glass transition temperature thereof is 20-30°C.

5. The high temperature adhesive for drying room according to claim 4, characterized in that: The polyurethane is an aromatic polyurethane with an isocyanate group content of 8-12%.

6. The high temperature adhesive for drying room according to claim 5, characterized in that: The acid value of the saturated polyester is 10-20 mgKOH / g, and the hydroxyl value is 30-50 mgKOH / g.

7. The high temperature adhesive for drying room according to claim 6, characterized in that: The phosphating layer is composed of zinc phosphate and manganese phosphate in a mass ratio of 2:

1.

8. The high temperature adhesive for drying room according to claim 7, characterized in that: The hydrocinnamate is 4-methoxyhydrocinnamate.

9. The high temperature adhesive for drying room according to claim 8, characterized in that: The aliphatic alkylamine is n-dodecylamine.

10. The high temperature adhesive for drying room according to claim 9, characterized in that: Adopting the drying room high temperature adhesive preparation process, The following steps are included: Step 1: Pre-stir the aluminum powder. Slowly add the accurately weighed aluminum powder into a clean reactor. Turn on the stirring function of the reactor, set the temperature to 30-40°C, and stir for 10-20 minutes. This step is to ensure that the aluminum powder is initially dispersed evenly, laying the foundation for subsequent mixing with other ingredients. Step 2: Mix the main ingredients and add the modified polyacrylate, polyurethane, and saturated polyester to the reactor in sequence. The addition process should be slow and uniform to avoid excessive local concentration. After the addition is completed, gradually increase the temperature of the reactor to 60-80°C while continuously stirring for 30-60 minutes. Step 3: Add auxiliary ingredients. After the main ingredients are evenly mixed, add the phosphating layer, 4-methoxyhydrocinnamate and n-dodecylamine, and continue stirring for 20-40 minutes to fully blend all the ingredients. Step 4, cooling and packaging. After stirring is completed, stop heating and let the materials in the reactor cool naturally to room temperature. During the cooling process, closely observe the state of the materials. After cooling is completed, package the prepared drying room high temperature adhesive sheet in a sealed packaging manner.