Typical properties and application of Hollow glass microspheres
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Author : TRUNNANO
Update time : 2023-03-07 11:33:11
Physical Chemical properties of Hollow glass microspheres Hollow glass beadsare a kind of glass microspheres with small density, lightweight and high strength. Due to the characteristic of hollow, it has characteristics of lightweight, low density and good adiabatic performance compared with ordinary glass beads, which is the main raw material of heat insulation coating. Other high-quality characteristics of hollow glass beads are as follows.
1. Pure white colour. It can be widely used in any products that require the colour of appearance. 2. Light-specific gravity and large volume. The density of hollow glass beads is about one-tenth of the density of traditional filler particles, which can greatly reduce the base weight of the product after filling, replace and save more resin for production, and reduce the cost of the product. 3. It has an organically modified (oleophilic) surface. Hollow glass beads are easy to be wetted and dispersed and can be filled in most thermosetting thermoplastic resins, such as polyester, epoxy resin, polyurethane, etc. 4. High dispersion and good fluidity. Since hollow glass beads are tiny spheres, they have better fluidity in liquid resin than flakes, needles or irregularly shaped fillers, so the mould-filling performance is excellent. 5. Heat insulation, sound insulation, insulation, and low water absorption rate. The interior of hollow glass beads is thin gas, so it has the characteristics of sound insulation and heat insulation, which is an excellent filler for various heat insulation and sound insulation products. The thermal insulation property of hollow glass beads can also protect products from thermal shock caused by alternating between rapid hot and cold conditions. The high specific resistance and very low water absorption make it widely used in the processing and producing cable insulation materials. 6. Low oil absorption rate: the particles of the spheres determine the smallest specific surface area and low oil absorption rate, which can greatly reduce the amount of resin in the process of use, and the viscosity will not increase much even under the premise of high addition, which greatly improves the production operating conditions and can increase the production efficiency by 10% to 20%.
Typical Applications of Hollow glass microspheres Hollow glass beads are widely used in glass steel products, composite foam, artificial marble, synthetic wood, sound insulation and heat preservation materials, atomic ash, deep sea buoyancy materials, bowling balls, low-density adhesives, sealing materials, lightweight resin crafts, fresco wall hanging picture frames, the sandwich layer structure of wall panels, lightweight encapsulation materials for electronic industry, wave absorbing materials, lightweight concrete, emulsified explosives, etc. Hollow glass beads particles are closed hollow spheres added into the coating to form many microscopic independent adiabatic cavities, thus greatly improving the insulation of the coating film against heat and sound and playing a good role in heat insulation and noise reduction.
Uses of hollow glass beads. 1. The spherical structure of hollow glass beads makes them have a good dispersion effect on impact and stress, so they can be added into the coating to improve the external impact resistance of the coating film and also reduce the stress cracking of the coating due to thermal expansion and cold contraction. 2. Better whitening and covering effect. The white powder has a better whitening effect than ordinary pigment, which can effectively reduce the amount of other expensive fillers and pigments. 3. Effectively strengthen the adhesion of the coating. The low oil absorption of glass beads enables more resin to participate in the film formation, thus improving the adhesion of the coating by 3~4 times. 4. Adding 5% of microbeads can make the density of the coating from 1.30 will to below 1.0, thus greatly reducing the weight of the coating and preventing the phenomenon of wall coating falling off. 5. Micro-beads have a good reflecting effect on ultraviolet rays and avoid yellowing and ageing of the coating. 6. The high melting point of microbeads greatly improves the temperature resistance of the coating and plays a very good role in fire prevention. 7. The spherical particles of microbeads play the role of bearing, and the friction is small, which can strengthen the active coating film performance of the coating and make the construction more convenient.
Microbeads are chemically inert and non-toxic. But because they are extremely light, they need special attention when added. We advocate taking the step-by-step participation method, that is, each time the amount of participation is 1/2 of the remaining microbeads, and gradually participate, which can well prevent the microbeads from floating into the air and make the dispersion more complete.
Description of Hollow glass microspheres Hollow glass beads are a kind of glass bead with special processing, whose main feature is smaller density and worse thermal conductivity than glass beads. It is a micron-level new lightweight material developed in the 1950s and 1960s, and its main component is borosilicate, with a general particle size of 10~250μm and a wall thickness of 1-2μm; hollow glass beads have high compressive strength, high melting point, high resistivity, small thermal conductivity and thermal contraction coefficient, etc. It is known as the "space age material" of the 21st century. It is known as the "space age material" in the 21st century. Hollow glass beads have the obvious effects of weight reduction and sound insulation and heat preservation and make the products have good anti-cracking performance and reprocessing performance, which are widely used in engineering plastics, anti-corrosion and heat preservation materials, rubber, buoyancy materials, FRP, artificial marble, artificial agate, substitute wood and other composite materials, as well as petroleum industry, aerospace, 5G communication, new high-speed trains, automobile ships, thermal insulation coatings, adhesives, etc. fields.
Packaging of Hollow glass microspheres We have many different kinds of packing, which depend on the hollow glass spheres quantity. Hollow glass spheres packing: 1kg/bag, 25kg/barrel, or 200kg/ barrel. Hollow glass spheres shipping: could be shipped out by sea, by air, or by express as soon as possible once payment receipt.
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