Hot-melt pressure-sensitive adhesive for mouse sticking board product and preparation method of hot-melt pressure-sensitive adhesive

Abstract

The invention relates to the technical field of adhesives, in particular to the field of IPC C09J7, and more particularly relates to a hot-melt pressure-sensitive adhesive for a mouse sticking board product and a preparation method of the hot-melt pressure-sensitive adhesive. The material comprises the following components in percentage by weight: 25-50% of petroleum resin, 5-20% of SEBS, 2-10% of SIS, 2-10% of rubber, 0.1-2% of an antioxidant and the balance of a softening agent. The weight ratio of the SEBS to the SIS is 1: (0.4-0.6), and the content of diblock in the SIS is 50-70wt%, so that the high and low temperature stability of the hot melt adhesive can be further improved; the content of the rubber in the hot-melt pressure-sensitive adhesive is 4-8wt%, and the weight ratio of the petroleum resin to the softening agent is 1: (0.8-1.2), so that the hot-melt pressure-sensitive adhesive has excellent initial adhesion and certain flow resistance under medium and high temperature conditions, and the hot-melt pressure-sensitive adhesive meets the use requirements of mouse trapping plate products.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesives, in particular to the field of IPC C09J7, and more specifically to a hot melt pressure-sensitive adhesive for mouse trap products and a preparation method thereof. Background Art

[0002] With the acceleration of urbanization, the demand for pest control in homes and commercial places has increased, especially for efficient and environmentally friendly ways to capture pests such as rats. Traditional mouse catching methods such as mousetraps and poison baits have safety hazards and secondary pollution problems, while sticky mouse boards are favored because of their easy operation, non-toxicity, and no environmental pollution. Whether from a cost perspective or an environmental perspective, the use of hot melt pressure-sensitive adhesives in sticky mouse boards is currently a more advantageous option, but considering the mouse catching process, the adhesive first needs to maintain sufficient viscosity at room temperature to capture pests; second, it needs to maintain stable performance under different temperature and humidity conditions. Too high or too low temperatures will affect the viscosity and stability of the adhesive, so it is necessary to develop colloids that can work under a wide range of environmental conditions.

[0003] CN101831263A discloses a hot melt pressure-sensitive adhesive for PVC plastic floor tiles, comprising 5 to 10 parts of thermoplastic elastomer SBS792, 20 to 25 parts of thermoplastic elastomer SIS-4211, 5 to 10 parts of petroleum resin ESCOREZ5020, 20 to 30 parts of petroleum resin ESCOREZ1000, 15 to 20 parts of petroleum resin ESCOREZ5000, 10 to 15 parts of rubber softening oil KN4010, and 0.2 to 0.5 parts of a composite antioxidant. The hot melt pressure-sensitive adhesive of the present invention has good cohesion, but its initial viscosity and low-temperature stability are not suitable for mouse traps. Summary of the invention

[0004] The first aspect of the present invention provides a hot melt pressure sensitive adhesive for mouse sticky board products, which comprises, by weight percentage, 25-50% petroleum resin, 5-20% SEBS (hydrogenated styrene-butadiene block copolymer), 2-10% SIS (styrene-isoprene-styrene), 2-10% rubber, 0.1-2% antioxidant, and the balance made up by a softener.

[0005] The petroleum resin includes one or more of hydrogenated C5, non-hydrogenated C5, DCPD, hydrogenated C9, and C5 / C9 copolymer.

[0006] The softener includes one or more of paraffin oil, naphthenic oil and white mineral oil.

[0007] The antioxidant includes at least one of antioxidant 1010 , antioxidant 1076 , antioxidant 1024 , and antioxidant 1098 .

[0008] The weight ratio of the SEBS to SIS is 1:(0.2-0.8).

[0009] Optionally, the weight ratio of SEBS to SIS is 1:(0.4-0.6).

[0010] The diblock content in the SIS is 50-70 wt%.

[0011] Optionally, the diblock content in the SIS is 55-65 wt%.

[0012] The SIS has a melt flow rate of 3-8 g / 10 min at 200° C. and 5 kg.

[0013] Optionally, the SIS has a melt flow rate of 4-8 g / 10 min at 200° C. and 5 kg.

[0014] The SEBS has a styrene content of 25-32 wt % and a melt flow rate (200° C., 5 kg) of 0.1-1 g / 10 min.

[0015] Optionally, the SEBS has a styrene content of 28-32 wt % and a melt flow rate (200° C., 5 kg) of 0.1-0.5 g / 10 min.

[0016] Optionally, the content of the rubber in the hot melt pressure-sensitive adhesive is 4-8wt%.

[0017] The weight ratio of the petroleum resin to the softener is 1:(0.8-1.2).

[0018] Optionally, the weight ratio of the petroleum resin to the softener is 1:(0.9-1.1).

[0019] The rubber comprises butyl rubber, and the Mooney viscosity of the butyl rubber is 40-60 at 125°C.

[0020] The applicant has found that the weight ratio of SEBS to SIS is 1:(0.2-0.8), which can improve the initial adhesion performance of the hot melt adhesive. It may be that the two form an interpenetrating polymer network, which increases the density of the entanglement points of the chain segments. When the SEBS content is high, the composite material has higher adhesion and strength, but lower hardness and elasticity; when the SIS content is too high, the elasticity and flexibility are better, but the strength and durability will be reduced accordingly. Further research has found that the weight ratio of SEBS to SIS is 1:(0.4-0.6), and the diblock content in SIS is 50-70wt%, which can further improve the high and low temperature stability of the hot melt adhesive. It may be that the two form a certain anchoring effect in the polymer network, reducing the deformation caused by temperature changes.

[0021] Normally, pressure-sensitive adhesives with strong initial tack have low flow resistance. The present application found that the rubber content in the hot-melt pressure-sensitive adhesive is 4-8wt%, and the weight ratio of petroleum resin to softener is 1:(0.8-1.2), which allows the hot-melt adhesive to have excellent initial tack while having certain flow resistance under medium and high temperature conditions. It may be that the rubber plays a reinforcing role in the system, while the petroleum resin promotes the dispersion performance of rubber and elastomer while playing a role in reducing the viscosity of the system.

[0022] The second aspect of the present invention provides a method for preparing a hot melt pressure-sensitive adhesive for a mouse trap product, comprising the following steps:

[0023] S1, preheating 60-90 wt% of a softener, adding SIS and an antioxidant, heating, vacuuming, and stirring to obtain a first mixture;

[0024] S2, adding SEBS to the first mixture and stirring evenly to obtain a second mixture;

[0025] S3, uniformly mix the remaining softener and rubber to obtain a butyl rubber mixture, add the butyl rubber mixture to the second mixture, and then add petroleum resin, stir evenly, and obtain the mixture.

[0026] The stirring speed in steps S1 and S2 is 20-40 r / min; the stirring speed in step S3 is 40-65 r / min.

[0027] Optionally, the stirring speed in steps S1 and S2 is 20-30 r / min; the stirring speed in step S3 is 40-55 r / min.

[0028] The step S3 comprises: uniformly mixing the remaining softener and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture to the second mixture, stirring for 5-10 minutes, then adding petroleum resin, heating to 145-160° C., stirring for 20-60 minutes, and obtaining the product.

[0029] Optionally, the step S3 comprises: uniformly mixing the remaining softener and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture to the second mixture, stirring for 5-8 minutes, then adding petroleum resin, heating to 145-155° C., stirring for 20-40 minutes, and obtaining the mixture.

[0030] In step S3, the softener and the rubber are mixed by kneading, and the kneading temperature is 140-160°C.

[0031] Beneficial Effects

[0032] 1. The weight ratio of SEBS and SIS is 1:(0.2-0.8), which can improve the initial adhesion performance of hot melt adhesive.

[0033] 2. The weight ratio of SEBS to SIS is 1:(0.4-0.6), and the diblock content in SIS is 50-70wt%, which can further improve the high and low temperature stability of the hot melt adhesive.

[0034] 3. The content of rubber in the hot melt pressure sensitive adhesive is 4-8wt%, and the weight ratio of petroleum resin to softener is 1:

[0035] (0.8-1.2), which can make the hot melt adhesive have excellent initial adhesion and certain flow resistance under medium and high temperature conditions, so that it can meet the use requirements of mousetrap products.

[0036] 4. The rubber includes butyl rubber, and the Mooney viscosity of butyl rubber is 40-60 at 125°C, which can make the pressure-sensitive adhesive achieve the effect of no obvious hanging for 18 hours in a vertical hanging test at 60°C.

[0037] 5. This application can further improve the stability of the pressure-sensitive adhesive and improve the storage and transportation performance through a specific preparation method. DETAILED DESCRIPTION

[0038] Example 1

[0039] A hot melt pressure sensitive adhesive for mouse sticky board products, the components are: petroleum resin (hydrogenated C9 resin, Henghe HF100) 37.5%, SEBS (Sinopec YH-501) 12%, SIS (Jusheng 1170) 6%, rubber (butyl rubber, Russian BK-1675N) 6%, antioxidant (antioxidant 1010) 0.5%, and softener (naphthenic oil, Sinopec N4010) to make up the balance.

[0040] A method for preparing a hot melt pressure-sensitive adhesive for a mouse trap product comprises the following steps:

[0041] S1, preheating 84.2 wt% of the total softener, adding SIS and antioxidant, heating (115°C, 10 minutes), evacuating to -0.1 MPa, stirring (25 r / min) to obtain a first mixture;

[0042] S2, adding SEBS to the first mixture and stirring (25 r / min) to obtain a second mixture;

[0043] S3, comprising: uniformly mixing the remaining softener and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture to the second mixture, stirring for 8 minutes, then adding petroleum resin, heating to 150° C., stirring for 30 minutes, and obtaining the mixture.

[0044] Comparative Example 1

[0045] A hot melt pressure sensitive adhesive comprises the following components by weight percentage: 43% petroleum resin (hydrogenated DCPD resin), 18% SIS (Polysin 1170), 13% rubber (butyl rubber, Russian BK-1675N), 0.5% antioxidant (antioxidant 1010), and the balance is made up by a softener (naphthenic oil, PetroChina N4010).

[0046] A method for preparing a hot melt pressure-sensitive adhesive comprises the following steps:

[0047] S1, preheating a softener accounting for 49 wt% of the total amount, adding SIS and an antioxidant, heating (115°C, 10 minutes), evacuating to -0.1 MPa, and stirring (25 r / min) to obtain a first mixture;

[0048] S2 comprises: uniformly mixing the remaining softener and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture into the second mixture, stirring for 8 minutes, then adding petroleum resin, heating to 150° C., stirring for 30 minutes, and obtaining the mixture.

[0049] Comparative Example 2

[0050] A hot melt pressure sensitive adhesive comprises the following components by weight percentage: 43% petroleum resin (hydrogenated DCPD resin), 12% SEBS (Sinopec YH-501), 13% rubber (butyl rubber, Russian BK-1675N), 0.5% antioxidant (antioxidant 1010), 3.5% monomer resin (Eastman 5140), and the balance is made up of a softener (naphthenic oil, Sinopec N4010).

[0051] A method for preparing a hot melt pressure-sensitive adhesive comprises the following steps:

[0052] S1, preheating a softener accounting for 27.8 wt% of the total amount, adding SEBS and an antioxidant, heating (115° C., 10 minutes), evacuating to -0.1 MPa, and stirring (25 r / min) to obtain a first mixture;

[0053] S2 comprises: uniformly mixing the remaining softener, monomer resin and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture into the second mixture, stirring for 8 minutes, then adding petroleum resin, heating to 150° C., stirring for 30 minutes, and obtaining the mixture.

[0054] Performance testing methods and data

[0055] The performance of the hot melt pressure sensitive adhesives in the embodiments and comparative examples was tested, and the test data are listed in Table 1.

[0056] Table 1

[0057] project standard Example 1 Comparative Example 1 Comparative Example 2 Melt viscosity, 150℃ / mPa.s HG / T3660-1999 1400 8000 3500 Softening point / ℃ GB / T15332-1994 68 85 85 Glass transition temperature / ℃ DSC scanning method -28 -8 -10 Rolling ball initial adhesion / ball number GB / T4852-2002 32 18 12 Vertical flow (1.5mm thickness) 60℃ vertical hanging, 18h No obvious hanging Slightly hanging No obvious hanging

Claims

1. A hot melt pressure sensitive adhesive for mouse trap products, characterized in that: Calculated by weight percentage, the components include: 25-50% petroleum resin, 5-20% SEBS, 2-10% SIS, 2-10% rubber, 0.1-2% antioxidant, and the balance is made up by softener.

2. The hot melt pressure sensitive adhesive for mouse trap products according to claim 1, characterized in that: The weight ratio of the SEBS to SIS is 1:(0.2-0.8).

3. The hot melt pressure sensitive adhesive for mouse trap products according to claim 2, characterized in that: The weight ratio of the SEBS to SIS is 1:(0.4-0.6).

4. The hot melt pressure sensitive adhesive for mouse trap products according to claim 3, characterized in that: The diblock content in the SIS is 50-70 wt%.

5. The hot melt pressure sensitive adhesive for mouse trap products according to claim 4, characterized in that: The SIS has a melt flow rate of 3-8 g / 10 min at 200° C. and 5 kg.

6. The hot melt pressure sensitive adhesive for mouse trap products according to claim 5, characterized in that: The content of the rubber in the hot melt pressure sensitive adhesive is 4-8wt%.

7. The hot melt pressure sensitive adhesive for mouse trap products according to claim 6, characterized in that: The weight ratio of the petroleum resin to the softener is 1:(0.8-1.2).

8. A method for preparing the hot melt pressure sensitive adhesive for mouse trap products according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, preheating 60-90 wt% of a softener, adding SIS and an antioxidant, heating, vacuuming, and stirring to obtain a first mixture; S2, adding SEBS to the first mixture and stirring evenly to obtain a second mixture; S3, uniformly mix the remaining softener and rubber to obtain a butyl rubber mixture, add the butyl rubber mixture to the second mixture, and then add petroleum resin, stir evenly, and obtain the mixture.

9. The method for preparing the hot melt pressure sensitive adhesive for mouse trap products according to claim 8, characterized in that: The stirring speed in steps S1 and S2 is 20-40 r / min; the stirring speed in step S3 is 40-65 r / min.

10. The method for preparing the hot melt pressure sensitive adhesive for mouse trap products according to claim 9, characterized in that: The step S3 comprises: uniformly mixing the remaining softener and rubber to obtain a butyl rubber mixture, adding the butyl rubber mixture to the second mixture, stirring for 5-10 minutes, then adding petroleum resin, heating to 145-160° C., stirring for 20-60 minutes, and obtaining the product.