Glue with high weather resistance and preparation method thereof

Abstract

The invention relates to the field of glue production, in particular to glue with high weather resistance, and the glue with high weather resistance comprises the following components by weight; the formula comprises the following components by weight: 115kg to 120kg of MDL, 125g to 130g of methanesulfonic acid, 1kg to 1.2 kg of silicon oxide, 47kg to 52kg of polyether polyol 210, 0.3 g to 0.5 g of BHT (butylated hydroxytoluene), 0.5 g to 1g of sodium lauryl sulfate, 5g to 10g of PEG (polyethylene glycol) 6000, 5kg to 10kg of polyether polyol 303, 15kg to 18kg of silicone oil and 2kg to 3kg of a catalyst. According to the glue with high weather resistance disclosed by the invention, a formula and a preparation process for preparing the glue are improved, so that the prepared glue has high bonding strength, good weather resistance and heat resistance, excellent flexibility and water resistance, rapid curing, good flowability and environmental friendliness. Due to the characteristics, the glue is suitable for various base materials and application scenes.

Description

Technical Field

[0001] The invention belongs to the field of glue production, and particularly relates to glue with high weather resistance and a preparation method thereof. Background Art

[0002] Glue is a kind of adhesive. Its basic principle is to use the ingredients in the glue to produce chemical reactions or physical adsorption with the surface of the bonded materials, so as to firmly connect two or more materials together. These ingredients determine the adhesion, durability and application range of the glue. The main ingredients of glue include natural glue, synthetic glue, resin glue, rubber, etc.; glue is widely used in various fields, such as daily necessities, industrial products, building materials, etc. In terms of daily necessities, glue is often used in the production and repair of furniture, stationery, decorations, etc.; in terms of industrial products, glue is often used in the manufacture and maintenance of automobiles, electronics, aviation and other industries; in terms of building materials, glue is often used for the bonding and waterproofing of walls, floors, roofs, etc.

[0003] Existing glue is easily degraded when used under high temperature, humidity or ultraviolet radiation, resulting in reduced performance. In addition, traditional glue is often only applicable to specific substrates when used, limiting its scope of application. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Summary of the invention

[0004] The purpose of the invention is to overcome the defects described in the background technology, so as to realize a glue with high weather resistance, so as to solve the problems in the prior art that the glue is easily degraded under high temperature, humidity or ultraviolet radiation when used, has poor weather resistance, can only be applied to specific substrates, and has poor application scope and applicability.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is: A glue with high weather resistance, comprising the following components by weight: MDL, 115kg-120kg, methanesulfonic acid, 125g-130g, silicon oxide, 1kg-1.2kg, polyether polyol 210, 47kg-52kg, BHT, 0.3g-0.5g, sodium lauryl sulfate, 0.5g-1g, PEG6000, 5g-10g, polyether polyol 303, 5kg-10kg, silicone oil, 15kg-18kg, catalyst, 2kg-3kg.

[0006] In the above-mentioned glue with high weather resistance, preferably, the glue with high weather resistance includes the following components by weight: MDL, 116kg, methanesulfonic acid, 128.4g, silicon oxide, 1.08kg, polyether polyol 210, 50kg, BHT, 0.44g, sodium lauryl sulfate, 0.88g, PEG6000, 7.88g, polyether polyol 303, 8.72kg, silicone oil, 16kg, catalyst, 2.6kg.

[0007] In the above-mentioned glue with high weather resistance, preferably, the glue with high weather resistance includes the following components by weight: MDL, 117kg, methanesulfonic acid, 126g, silicon oxide, 1.15kg, polyether polyol 210, 48kg, BHT, 0.35g, sodium lauryl sulfate, 0.57g, PEG6000, 6.2g, polyether polyol 303, 6.4kg, silicone oil, 17kg, catalyst, 2.04kg.

[0008] In the above-mentioned glue with high weather resistance, preferably, the glue with high weather resistance includes the following components by weight: MDL, 119.5kg, methanesulfonic acid, 129.8g, silicon oxide, 1.2kg, polyether polyol 210, 51.7kg, BHT, 0.5g, sodium lauryl sulfate, 0.97g, PEG6000, 10g, polyether polyol 303, 9.82kg, silicone oil, 18kg, catalyst, 2.94kg.

[0009] In the above-mentioned glue with high weather resistance, the catalyst is DBTDL, i.e. dibutyltin dilaurate.

[0010] The present invention also discloses a method for preparing the above-mentioned glue with high weather resistance, and the preparation method comprises: Step 1: Preheat the equipment, turn on the water tank switch, set the water tank temperature to 60℃, and when the water tank temperature reaches 50℃, start heating the reactor.

[0011] Step 2: Add the materials at one time. When the temperature of the reactor rises to 50°C, add the raw materials, MDL, methanesulfonic acid, and silicon oxide in sequence. After the raw materials are added, keep the temperature at 70°C-73°C and stir for 30 minutes.

[0012] Step 3, secondary addition, after the first addition reaches the stirring time, add the raw material polyether polyol 210. After the raw materials are added, maintain the temperature at 70°C-73°C and continue stirring for 30 minutes.

[0013] Step 4, add materials three times. After the second addition reaches the stirring time, add the raw materials BHT, sodium lauryl sulfate, and PEG6000 in sequence. After the raw materials are added, lower the temperature to 60°C-63°C and stir for 30 minutes.

[0014] Step 5, add materials four times. After the third addition reaches the stirring time, start to control the temperature. When the temperature rises to 85°C-87°C, add the raw material polyether polyol 303. After the raw materials are added, keep the temperature at 85°C-95°C and stir for 80 minutes.

[0015] Step six, add materials five times. After the fourth addition reaches the stirring time, start to control the temperature. When the temperature drops to 40°C, add the raw material methanesulfonic acid again. After the raw materials are added, keep the temperature at 55°C-53°C and stir for 15 minutes.

[0016] Step seven, add materials six times. After the fifth addition reaches the stirring time, add the raw material silicone oil. After the raw materials are added, keep the temperature at 55°C-53°C and stir for 15 minutes.

[0017] Step eight, storage and material addition, transfer the raw materials after sufficient mixing in the above steps to a storage tank, add the raw material catalyst after transfer to the storage tank, and after the raw materials are added, stir for 60 minutes to complete the preparation of the glue.

[0018] Compared with the prior art, the highly weather-resistant glue of the present invention has at least the following beneficial effects: The glue with high weather resistance of the present invention has high bonding strength, good weather resistance and heat resistance, excellent flexibility and water resistance, fast curing, good fluidity and environmental friendliness by improving the formula and preparation process of the glue. These characteristics make the glue suitable for a variety of substrates and application scenarios, such as construction, furniture, electronics, automobiles, etc., and at the same time have long storage stability and economical and efficient production advantages.

[0019] The above steps are used to prepare a highly weather-resistant glue having the above weight percentage components. By selecting low-volatile raw materials and optimizing the production process, the VOC (volatile organic compound) content of the glue is low, which is more environmentally friendly and healthy and meets environmental protection requirements. At the same time, by controlling the reaction conditions and the added stabilizer, the glue is not easy to deteriorate during storage and has a long shelf life, reducing waste caused by improper storage. The optimized formula and process reduce unnecessary waste of raw materials, reduce production costs, improve the market competitiveness of the product, and are suitable for large-scale production. DETAILED DESCRIPTION

[0020] The highly weather-resistant glue of the present invention is described in more detail below through specific implementation methods. Example 1

[0021] This embodiment discloses a highly weather-resistant glue, which is used to solve the problems of the prior art glue being easily degraded under high temperature, humidity or ultraviolet radiation, having poor weather resistance, being applicable only to specific substrates, and having poor application scope and applicability. In this embodiment, the highly weather-resistant glue includes the following components by weight: MDL, 115kg-120kg, methanesulfonic acid, 125g-130g, silicon oxide, 1kg-1.2kg, polyether polyol 210, 47kg-52kg, BHT, 0.3g-0.5g, sodium lauryl sulfate, 0.5g-1g, PEG6000, 5g-10g, polyether polyol 303, 5kg-10kg, silicone oil, 15kg-18kg, catalyst, 2kg-3kg.

[0022] In this embodiment, MDI is used as the main reaction component to react with compounds such as polyols to form a cross-linked network, thereby improving the mechanical properties and heat resistance of the glue. The resulting glue not only has strong bonding force, but also makes the MDL glue have excellent water resistance, heat resistance and weather resistance. This enables the coating to maintain its physical and chemical properties in a high temperature environment.

[0023] At the same time, methanesulfonic acid can accelerate chemical reactions, promote the curing of glue, ensure that the glue is evenly cured in different parts, avoid the problem of local uncured, effectively shorten the curing time of glue, and improve production efficiency.

[0024] In addition, by adding silicon oxide, the physical properties and heat resistance of the glue can be improved, ensuring that it remains stable under extreme temperatures, while enhancing its hardness and wear resistance. Furthermore, adding polyether polyol 210 can increase the flexibility and elasticity of the glue, improve its water resistance, and enable the adhesive to exhibit excellent adhesion on the surfaces of different materials, even in a humid environment.

[0025] The wettability and dispersibility of the glue can be improved by adding sodium lauryl sulfate. It improves the wettability of the glue to the substrate, making it easier to apply evenly, while improving the dispersibility of the components in the glue to ensure uniform mixing. By using PEG6000 and silicone oil as a wetting agent, plasticizer and lubricant, the fluidity and coating of the glue can be improved, and the flexibility and water resistance of the glue can be increased, making it easier to operate.

[0026] Specifically, in this embodiment, the glue with high weather resistance includes the following components by weight: MDL, 116kg, methanesulfonic acid, 128.4g, silicon oxide, 1.08kg, polyether polyol 210, 50kg, BHT, 0.44g, sodium lauryl sulfate, 0.88g, PEG6000, 7.88g, polyether polyol 303, 8.72kg, silicone oil, 16kg, catalyst, 2.6kg.

[0027] According to the above glue preparation components measured by weight, this embodiment also discloses a method for preparing glue with high weather resistance, comprising the following steps: Step 1: Preheat the equipment, turn on the water tank switch, set the water tank temperature to 60°C, and start heating the reactor when the water tank temperature reaches 50°C; Step 2, add the materials at one time. When the temperature of the reactor rises to 50°C, add the raw materials, MDL, 116kg, methanesulfonic acid, 30.4g, and silicon oxide, 1.08kg, in sequence. After the raw materials are added, keep the temperature at 70°C-73°C and stir for 30 minutes; Step 3, secondary addition, after the first addition reaches the stirring time, add the raw material polyether polyol 210, 50kg, after the raw materials are added, keep the temperature at 70℃-73℃, and continue stirring for 30 minutes; Step 4, add materials three times. After the second addition reaches the stirring time, add raw materials BHT, 0.44g, sodium lauryl sulfate, 0.88g, PEG6000, 7.88g in sequence. After the raw materials are added, reduce the temperature to 60℃-63℃ and stir for 30 minutes; Step 5, add materials four times. After the third addition reaches the stirring time, start to control the temperature. When the temperature rises to 85°C-87°C, add 8.72 kg of raw material polyether polyol 303. After the raw materials are added, keep the temperature at 85°C-95°C and stir for 80 minutes; Step 6, five times of adding materials, after the fourth time of adding materials reaches the stirring time, start to control the cooling, when the temperature drops to 40 ° C, add the raw material methanesulfonic acid again, 98g, after the raw materials are added, keep the temperature at 55 ° C-53 ° C, and stir for 15 minutes; Step 7, add materials six times. After the fifth addition reaches the stirring time, add raw material silicone oil, 16 kg. After the raw materials are added, keep the temperature at 55°C-53°C and stir for 15 minutes; Step eight, storage and feeding, transfer the raw materials after sufficient mixing in the above steps to the storage tank, add the raw material catalyst, 2.6 kg, after the raw materials are added, stir for 60 minutes to complete the preparation of the glue.

[0028] The glue with high weather resistance prepared by the above steps and calculated by the above weight components has high production efficiency, short production cycle, relatively simple production process, easy to control, and relatively balanced dosage of each raw material, avoiding the problem caused by excessive amount of a certain raw material. At the same time, its cost is low, the dosage of raw materials is moderate, and the glue prepared by the ratio of the present embodiment, the dosage of MDL and methylsulfonic acid is moderate, which not only ensures good bonding performance but also does not increase the cost due to excessive amount. At the same time, it can maintain stable performance under different temperature and humidity conditions, and has strong weather resistance. High cost-effectiveness, good comprehensive performance, and strong environmental adaptability. It is suitable for general industrial applications that require high bonding force and good mechanical properties, such as wood processing, automotive interior parts fixing, etc.

[0029] It should be noted that in this embodiment, the temperature in each step is calculated by the formula: ; In the formula, T 实际 is the actual measured temperature, T 设定 The target temperature is set to a value that is less than the maximum allowable deviation (±0.5°C).

[0030] In addition, to ensure that the amount of raw materials added each time meets the formula requirements, the deviation is calculated using the formula when the raw materials are added in each step: ; In the formula, W 实际 is the actual weight of raw materials added. W 设定 The standard for the set raw material weight is that the raw material deviation is less than the maximum allowable deviation value (±1%).

[0031] In this embodiment, the amount of MDL and methanesulfonic acid used is moderate, which ensures good bonding performance without increasing costs or affecting the stability of the final product due to excessive use. The balanced amount of polyether polyol 210 and polyether polyol 303 helps to improve the flexibility and durability of the glue. The small amount of silicone oil added makes the glue more suitable for application scenarios requiring higher strength, and is suitable for general industrial applications that require high bonding and good mechanical properties, such as wood processing, automotive interior parts fixing, etc. Example 2

[0032] The same points as the above embodiment will not be repeated here, but the difference is that: In this embodiment, the glue with high weather resistance includes the following components by weight: MDL, 117kg, methanesulfonic acid, 126g, silicon oxide, 1.15kg, polyether polyol 210, 48kg, BHT, 0.35g, sodium lauryl sulfate, 0.57g, PEG6000, 6.2g, polyether polyol 303, 6.4kg, silicone oil, 17kg, catalyst, 2.04kg.

[0033] Compared with Example 1, in this example, the content of MDL and methanesulfonic acid is slightly higher than that of ratio 1, which improves the initial adhesion of the glue, but at the same time increases the cost. The amount of silicone oil used is more than that of Example 1, which can provide better fluidity and smoother surface treatment, and is suitable for application scenarios requiring a beautiful surface.

[0034] The highly weather-resistant glue made from the above weight percentage components has slightly lower flexibility and durability than that of Example 1, but has higher fluidity and smoother surface treatment, and is suitable for occasions with certain requirements on surface quality, such as bonding of decorative materials in furniture manufacturing. Example 3

[0035] The same points as the above embodiment will not be repeated here, but the difference is that: In this embodiment, the glue with high weather resistance includes the following components by weight: MDL, 119.5kg, methanesulfonic acid, 129.8g, silicon oxide, 1.2kg, polyether polyol 210, 51.7kg, BHT, 0.5g, sodium lauryl sulfate, 0.97g, PEG6000, 10g, polyether polyol 303, 9.82kg, silicone oil, 18kg, catalyst, 2.94kg.

[0036] Compared with Example 1 and Example 2, in this example, the content of MDL and methanesulfonic acid is the highest, which can provide the strongest adhesion. More silicone oil (18 kg) and catalyst (2.94 kg) may make the glue have a faster curing speed and higher flexibility, which is suitable for fast production and applications requiring flexibility.

[0037] Although the coating made from the above-mentioned mass percentage components has high cost and process complexity, requires strict control of temperature and stirring time, and has a long production cycle, it has a fast curing speed, so that the glue prepared by this ratio has a faster curing speed and higher flexibility. It is suitable for application scenarios with high requirements for fast curing and high flexibility, such as electronic component fixation, lightweight material connection, and other application scenarios that require fast curing and high flexibility.

[0038] In summary, the following Table 1 is obtained: Element Example 1 Example 2 Example 3 MDL (kg) 116 117 119.5 Methanesulfonic acid (g) 128.4 126 129.8 Silicon oxide (kg) 1.08 1.15 1.2 Polyether polyol 210 (kg) 50 48 51.7 BHT (g) 0.44 0.35 0.5 Sodium lauryl sulfate (g) 0.88 0.57 0.97 PEG6000 (g) 7.88 6.2 10 Polyether polyol 303 (kg) 8.72 6.4 9.82 Silicone oil (kg) 16 17 18 Catalyst (kg) 2.6 2.04 2.94 According to the performance test of the glue with high weather resistance prepared by the multiple groups of embodiments in Table 1 above, the following Table 2 is obtained after the test: From Table 1 and Table 2 above, we can conclude that: The highly weather-resistant glue made by the components of Examples 1, 2, and 3 can effectively improve the weather resistance compared to the prior art, and by changing its ratio, the prepared glue is suitable for a variety of application scenarios, and has strong practicality and applicability. It can be seen that the content of the ingredients in Examples 1, 2, and 3 is relatively reasonable.

[0039] Among them, the amount of the main raw materials used in Example 1 is relatively balanced, avoiding unnecessary waste and reducing production costs; and it not only provides sufficient adhesion, but also maintains good flexibility and durability, suitable for most application scenarios; the production process of Example 1 is relatively simple, the production cycle is short, suitable for large-scale production, and the glue can maintain stable performance under different temperature and humidity conditions, and has stronger adaptability. It can be seen that Example 1 is the best embodiment.

[0040] In addition, it should be noted that the preparation ingredients of Examples 1, 2, and 3 of this specification are not unique and unchanging data. This specification only lists the most representative mass percentage data of raw materials for preparing bricks with better performance and suitable for three different scenarios.

[0041] Unless otherwise defined, technical or scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs.

[0042] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. The protection scope of the present invention is not limited thereto. It can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A glue with high weather resistance, characterized by: The glue with high weather resistance comprises the following components by weight: MDL, 115kg-120kg, methanesulfonic acid, 125g-130g, silicon oxide, 1kg-1.2kg, polyether polyol 210, 47kg-52kg, BHT, 0.3g-0.5g, sodium lauryl sulfate, 0.5g-1g, PEG6000, 5g-10g, polyether polyol 303, 5kg-10kg, silicone oil, 15kg-18kg, catalyst, 2kg-3kg.

2. The glue with high weather resistance according to claim 1, characterized in that: The glue with high weather resistance comprises the following components by weight: MDL, 116kg, methanesulfonic acid, 128.4g, silicon oxide, 1.08kg, polyether polyol 210, 50kg, BHT, 0.44g, sodium lauryl sulfate, 0.88g, PEG6000, 7.88g, polyether polyol 303, 8.72kg, silicone oil, 16kg, catalyst, 2.6kg.

3. The glue with high weather resistance according to claim 1, characterized in that: The glue with high weather resistance comprises the following components by weight: MDL, 117kg, methanesulfonic acid, 126g, silicon oxide, 1.15kg, polyether polyol 210, 48kg, BHT, 0.35g, sodium lauryl sulfate, 0.57g, PEG6000, 6.2g, polyether polyol 303, 6.4kg, silicone oil, 17kg, catalyst, 2.04kg.

4. The glue with high weather resistance according to claim 1, characterized in that: The glue with high weather resistance comprises the following components by weight: MDL, 119.5kg, methanesulfonic acid, 129.8g, silicon oxide, 1.2kg, polyether polyol 210, 51.7kg, BHT, 0.5g, sodium lauryl sulfate, 0.97g, PEG6000, 10g, polyether polyol 303, 9.82kg, silicone oil, 18kg, catalyst, 2.94kg.

5. The glue with high weather resistance according to claim 2, characterized in that: The catalyst is DBTDL.

6. A method for preparing a glue with high weather resistance, characterized in that: Step 1: Preheat the equipment, turn on the water tank switch, set the water tank temperature to 60°C, and start heating the reactor when the water tank temperature reaches 50°C; Step 2: Add the materials at one time. When the temperature of the reactor rises to 50°C, add the raw materials, MDL, methanesulfonic acid, and silicon oxide in sequence. After the raw materials are added, keep the temperature at 70°C-73°C and stir for 30 minutes. Step 3, secondary addition, after the first addition reaches the stirring time, add the raw material polyether polyol 210, after the raw materials are added, keep the temperature at 70℃-73℃, and continue stirring for 30 minutes; Step 4: add materials three times. After the second addition reaches the stirring time, add raw materials BHT, sodium lauryl sulfate, and PEG6000 in sequence. After the raw materials are added, lower the temperature to 60°C-63°C and stir for 30 minutes; Step 5, add materials four times. After the third addition reaches the stirring time, start to control the temperature. When the temperature rises to 85°C-87°C, add the raw material polyether polyol 303. After the raw materials are added, keep the temperature at 85°C-95°C and stir for 80 minutes; Step 6, five times of adding materials, after the fourth time of adding materials reaches the stirring time, start to control the cooling, when the temperature drops to 40 ° C, add the raw material methanesulfonic acid again, after the raw material is added, keep the temperature at 55 ° C-53 ° C, and stir for 15 minutes; Step 7, add the material six times. After the fifth addition reaches the stirring time, add the raw material silicone oil. After the raw materials are added, keep the temperature at 55°C-53°C and stir for 15 minutes; Step eight, storage and material addition, transfer the raw materials after sufficient mixing in the above steps to a storage tank, add the raw material catalyst after transfer to the storage tank, and after the raw materials are added, stir for 60 minutes to complete the preparation of the glue.

Images