Adhesive resin for acrylic bathtub and its preparation method and application

Abstract

The invention discloses an adhesive resin for acrylic bathtubs and its preparation method and application, comprising component A: 30-60 parts of multifunctional isocyanate compound, 2-3 parts of anti-shrinkage agent; component B: 22-40 parts Parts of polyether polyol, 2-3 parts of catalyst for isocyanate / hydroxyl reaction, 8-10 parts of epoxy resin, 1-2 parts of foam stabilizer, 15-20 parts of physical blowing agent; component C: 25-30 parts Polymethyl methacrylate, 1-2 parts of azoperoxide initiator, 20-30 parts of basic filler, also provide a kind of preparation method of bonding resin: mix described component A and component B and in Heating at 80-100°C for 1-3min to obtain the first mixture; heating component C at 70-80°C for 2-3min to obtain the second mixture; mixing the first mixture with the second mixture and stirring The adhesive resin can be obtained uniformly, and the adhesive resin is applied to the molding or recycling process of the acrylic bathtub. The acrylic bathtub has high dimensional stability and good adhesion.

Description

technical field [0001] The invention relates to the field of sanitary ware, in particular to an adhesive resin for an acrylic bathtub, a preparation method and application thereof. Background technique [0002] In the bathroom market, acrylic materials are widely used. Acrylic refers to polymethyl methacrylate, or PMMA, which is a thermoplastic engineering plastic with excellent comprehensive properties. The surface material of the most common acrylic bathtub is polymethyl methacrylate, and the back is reinforced with FRP composite material (FRP is glass fiber reinforced unsaturated polyester resin). The acrylic bathtub not only maintains the advantages of PMMA sheet with good surface finish, comfortable skin feeling, warm color, light texture, rich shape, and simple processing, but also has the advantages of FRP material, which is light, high-strength, not easy to deform, strong thermal stability, reliable electrical performance, and heat preservation. Good performance and...

AI Technical Summary

Problems solved by technology

In the above molding process, the process of back-coating FRP composite material is a key step. If the combination between the acrylic sheet and the FRP composite material used for reinforcement is not good, it will directly lead to the scrapping of the product

Usually the boards are very thin after thermoplastic molding, especially in the depth direction. The thickness of some corner parts is even less than 1 mm, which cannot bear the load at all. The bonding performance is especially important, and its bonding performance is mainly determined by the bonding resin used. Most of the bonding resins used in the market are unsaturated polyester resins, which are easy to turn yellow and have poor bonding performance. Disadvantages such as cylinder delamination

[0004] In order to solve the above problems, the Chinese patent CN107722885A is an acrylic bathtub butt adhesive and its application. PMMA and MMA are used as the main components of the bonding resin, which improves the fusion of the bonding resin and acrylic materials. At the same time, adding epoxy acrylic acid accelerates the process. The combination speed and adhesiveness of the adhesive resin and the material are improved. Although the problem of poor adhesive performance of the unsaturated polyester resin in the prior art and easy delamination with the acrylic cylinder is solved, the monomer component is used in it, which leads to The bonding resin shrinks greatly, which may easily cause the size of the bathtub to be unstable

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