The use of general adhesives and the advantages of bonding methods Adhesives can be used to bond metals, glass, wood, paper, fiber, rubber, plastic and other materials together to produce a whole whose function or performance is greater than the sum of its parts. The adhesive bonding method is increasingly replacing the mechanical coupling method, mainly because the adhesive bonding method has the following advantages.
(1) Materials such as films, fibers, and small particles are not good or are not easily connected by other methods, and they are easily bonded together with an adhesive. Typical examples of such applications are: lamination and gluing of various plastic films such as polyethylene, aluminum foil, cotton fabrics and paper; glass wool insulation and wool glass fiber composite materials; sanding wheels, sandpaper, emery cloth and brake pads; rayon , Nylon, polyester, and fiberglass-reinforced tires; corrugated boards, paper bags, labels, tapes, stamps and envelopes; safety glass; non-woven fabrics and flocked cloth or carpets stuffed with cotton, wool, or fine wool; particles Board or particle board, furniture decorative board or polaroid board, etc.
(2) Compared with traditional weaving and weaving methods, metal welding methods, and mechanical coupling methods such as riveting, bolting or nailing, adhesive bonding methods may be faster and more economical. This is often an important reason for using bonding methods. .
(3) Different materials (such as aluminum-paper, iron-copper, etc.) can be combined together. Moreover, when two metals are bonded, an adhesive can separate them to prevent corrosion. When the thermal expansion coefficients of the adherends of the two butyl rubber manufacturers are very different, the flexible adhesive can reduce the gravity caused by temperature changes. The performance of a laminate of different materials is better than that of any adhered material.
(4) The stress is distributed in a larger area, which can reduce the fatigue failure of the assembly and may be lighter and stronger than the mechanical connection. Such as the bonding of aircraft wings or tail and fuselage.
(5) The strength-mass ratio and dimensional stability of anisotropic materials are improved by cross-adhesion. For example, wood with non-uniformity and water sensitivity can be transformed into warp-resistant and water-resistant plywood; random fiber wool nets can be bonded to make isotropic non-woven fabrics.
(6) In capacitors, printed circuits and filled resistors, glued wires can provide electrical insulation.
(7) The glue line can serve as a moisture barrier. For example, in a packaging laminate, the glue line greatly increases moisture resistance. In the United States, almost 80% of the current demand for adhesives comes from the packaging and construction industry, and packaging adhesives are still growing. Table 1.8 shows several common industry sectors and specific applications of adhesives.
Butyl rubber manufacturers
Common uses of adhesivesApplicationsIndustrial use Manufacturing and installation of construction wooden laminates, prefabricated beams, siding, general buildings; installation of flooring, floor tiles, carpets, ceilings and cladding materialsConsumer goods, office supplies, leisure and modeling supplies and stationery Manufacture of non-rigidly bonded woven and non-woven fabrics; manufacture of mats, filter cloths, books, sports shoes and other sporting goods; manufacture of packaging cardboard boxes, cartons and corrugated cardboard; paper bags, envelopes, diapers or sanitary Manufacture of towels and other paper products; manufacture of cigarettes, labels and stamps; manufacturing of rigid adhesive tapes; manufacture of electrical appliances, electronics, daily necessities and furniture; manufacture of all adhesive tapes, including surgical, packaging, industrial, consumer products, and masking supplies Structural assembly of transportation aircraft and spacecraft; assembly of cars, trucks, boats and buses; manufacture of mobile homes.
How to choose the right silicone sealant? Silicone sealant has been used in various industries as one of the most important sealing materials, and it is becoming more and more widely used. Therefore, there are more and more manufacturers, and there are many varieties, good and bad, and even less Well, reduce the net content and so on to take various measures to obtain the maximum benefits, which has caused a lot of trouble for our users, the lighter loss of money, the serious cause serious quality accidents endangering safety, according to customer feedback and what we know For some of the problems, we will propose some solutions and suggestions for your reference.
Some users report that the prices of products from different manufacturers and different brands are very different, so buy more cheap products, so how to choose the product you need is the most cost-effective? In fact, it is very simple to say, which is what we often say to determine the "cost-effectiveness" of a product. Here are some suggestions for your reference:
First, we should choose the most suitable grade of product according to the actual application requirements of our project. If you use sealant, it is only used for general or temporary bonding and sealing, such as shops and warehouses with low requirements and grades. You can choose lower-quality products for decoration, etc. Conversely, if your building decoration project is of high standards and high requirements, such as high-end shopping malls, hotel glass curtain walls, aquariums and other structural or non-structural adhesive assemblies, then Should choose good quality and high-grade sealant products, its market price is also the highest. In this way, you can control the decoration cost by selecting products of different grades. However, we still want to draw your attention to the fact that good-quality glass adhesives are not “universal adhesives”, and there are substrates that are incompatible or incompatible with them. Therefore, we have repeatedly emphasized that users should Test the compatibility and adhesiveness of the sealant and the substrate before use. You must determine the suitability of the product by yourself, and you can apply it only after you pass the test.
Second, the net content and price ratio of sealant products must also be selected. At present, the net content of many silicone rubber products on the market has moisture. Many manufacturers have made a big fuss on the packaging. The normal packaging is 300ml per stick. Packing 280ml, or less 260ml, 250ml, it is naturally cheap from the price of each, but the measurement is insufficient. In addition, the packaging tube is made 5 to 10 mm shorter than the normal tube, or the thickness of the tail is the same as the normal tube, and it is thicker as it goes inward, or the sealing plug is made 10 mm longer than normal. But the appearance is almost the same. In general, thin silicone bottles and silicone products with sufficient net content are the most cost-effective choice of brands and products from reputable manufacturers. Knowing the above points, you will surely choose a satisfactory product.