Acrylic acid modified hot-melt pressure-sensitive adhesive for bearing adhesive tape and preparation method of acrylic acid modified hot-melt pressure-sensitive adhesive

Abstract

The invention relates to an acrylic acid modified hot-melt pressure-sensitive adhesive for a bearing adhesive tape. The acrylic acid modified hot-melt pressure-sensitive adhesive comprises the following raw materials in percentage by weight: 10-20 percent of an SIS rubber elastomer I, 10-20 percent of an SIS rubber elastomer II, 5-10 percent of 2-ethylhexyl acrylate, 0.5-2 percent of methyl methacrylate, 0.2-0.5 percent of hydroxypropyl methacrylate, 5-50 percent of a tackifier, 10-50 percent of a solvent, and 0.5-1 percent of an initiator. The acrylic acid modified hot-melt pressure-sensitive adhesive is high in cohesion, high in adhesion stress, high in ageing resistance, strong in adhesive force on a substrate, and wide in application range. A preparation method of the acrylic acid modified hot-melt pressure-sensitive adhesive comprises the following steps: the materials are weighed: the SIS rubber elastomer I, the SIS rubber elastomer II and a solvent account for the total amount of the solvent are added in a first reaction kettle, and 2-ethylhexyl acrylate, methyl methacrylate, hydroxypropyl methacrylate, the initiator and the rest of the solvent are added in a second reaction kettle to form a mixed solution; the mixed solution is slowly added in the first reaction kettle; the tackifier is added in the first reaction kettle, and the solvent is distilled out; the materials are discharged in heating, and the finished product is obtained. The preparation method is simple in process, and high in the production efficiency and yield.

Description

technical field [0001] The invention relates to the technical field of adhesive supplies, in particular to an acrylic-modified hot-melt pressure-sensitive adhesive for load-bearing tapes and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, various convenient civilian products are more and more popular with the public. The common edible oil barrels, pure water barrels, and various cartons in supermarkets are inconvenient to carry. Some edible oil barrels and pure water barrels There will be handles made of plastic on them, but their firmness is poor. The handles are easy to fall off from the edible oil barrels and pure water barrels. They cannot be shaken for a long time and greatly, which brings inconvenience to people. The existing carton All do not have suitable portable tool at present. [0003] Wherein, the reason that the handle is easy to fall off is that the existing adhesive has low cohesive force, small ...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of people's living standards, various convenient civilian products are more and more popular with the public. The common edible oil barrels, pure water barrels, and various cartons in supermarkets are inconvenient to carry. Some edible oil barrels and pure water barrels There will be handles made of plastic on them, but their firmness is poor. The handles are easy to fall off from the edible oil barrels and pure water barrels. They cannot be shaken for a long time and greatly, which brings inconvenience to people. The existing carton No suitable portable tools are currently available

[0003] Among them, the reason why the handle is easy to fall off is that the existing adhesive has low cohesion, low adhesion, poor aging resistance, and poor adhesion to the substrate.

[0004] In addition, the existing adhesives have high polarity, poor adhesion to non-polar materials (such as PP), and narrow application range; existing adhesives contain solvents such as benzene, which cause great environmental pollution; existing Adhesives need to be used together with an adhesion-promoting primer to enhance their adhesion on the substrate, which is troublesome to use and increases the cost of use

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