New synthetic benthic additives and their applications (3)

2.4 Dispersion of synthetic benthic soil in water
and dispersion of synthetic benthic soil in water are generally divided into 4 steps. Step 1 - wetting, synthetic bentonish monocrystalline will have a accumulation accumulation process, a single ion accumulation will form a cylinder-like accumulation shape, synthetic bentonish powder in the water will first wet; Individual particle accumulation; step 3 - sodium ion hydration, water molecules into a single particle accumulation, through structural expansion, that is, the expansion process to prop up the crystal layer; step 4 - separation into primary particles, completely separate the accumulation of individual particles into primary particles, through electrostatic attraction interaction to form a "house of cards" structure. The process of water cooperation for synthetic benthic soil is shown in Figure 5.3 Application of synthetic benthic soil
3.1 Application of synthetic benthic soil in coatings
Synthetic benthic soil provides excellent appearance when used in automotive coatings, improves pigment orientation, and also improves resistance to moisture and heat. Special specifications of synthetic bento-moist soil have been developed, such products in deionized water viscosity increase trend is weak, making it easier to add to the resin, and does not affect the viscosity of the coating and water resistance.
synthetic bentonish gel can be used in a single-part colorful coating to form a protective gel on the surface of the colorful particles to prevent the particles from mixing with each other. Synthetic bentonish soil for wood coating, can give varnish excellent transparency, gloss and flatness, improve pigment particle suspension and barrier, reduce pigment flocculation, improve color intensity, prevent floating wax, improve pigment color fastness. Synthetic benthic soil can be used in coating formulations for both industrial and DIY applications.
the suspension stability of pigments by using very small amounts of synthetic benthic soil in some formulations without affecting tentacles. Applications include liquid inks, automotive coatings, immersion paints and color wipes.
3.2 Application of synthetic benthic soil in agriculture and horticulture
Synthetic benthic soil is an inert ingredient in the formulation and can be used for crop growth or post-harvest treatment. Applications include: anti-sinking agents for agricultural suspensions or their concentrates, carriers for seed germination and machine seeding, gel media for plant root inserts, non-toxic anti-static and envelope coating for seeds, decorative gels, etc.
3.3 Application of synthetic benthic soil in ceramic processes
Synthetic benthic soil can be used for glazing in ceramic processes, which can partially or completely replace traditional organic polymer/clay-based support agents, improve stability and improve the spraying of ceramic or enamel glazes. At the same time can be applied to the embryo, improve the plasticity of high-end ceramic embryo and raw embryo strength, can reduce the number of loss or damage and reduce costs. Synthetic benthic soil also gives products high purity, high whiteness and excellent chemical compatibness, not due to high temperature or high shear dispersion process resulting in quality decline.
3.4 The stabilization effect of synthetic bentonous soil in emulsions
using the new process developed by Bick Chemical, the "powder particle method", to add synthetic bentonous soil to the emulsion system, can highlight the powerful stabilization effect of emulsion. This non-surfactant emulsion, which prevents stratified or gel stability only by synthesizing benthic particles, is called pickering emulsion. In addition to providing emulsion stability, synthetic benthic soil gives the product gel structure and shear thinning fluidity, providing formulators with the added advantage of "2 in 1". In the powdered particle method, the synthetic benthic powder is added directly to one of the phases, and then immediately both the water phase and the oil phase are made, so that the synthetic bento-moisturized soil is dispersed in both the water phase and the oil phase. It has been proved that this new addition order greatly improves the stability of emulsion compared with the process of dispersing water first before adding oil phase to synthetic benthic soil. With this new process, a wide range of oil/water emulsions can be prepared, with a wider range of polarity and viscosity options for oils and blends. The emulsion particle size can be controlled by adjusting the shear rate of homogeneity: the particle size under high shear is small; A low shear can be used to prepare stable oily particles with particle sizes up to millimeters.
the addition of synthetic benthic soil is based on 1.0% to 1.5% of the total emulsion amount, a stable lotion can be obtained. By changing the amount added to synthetic benthic soil, a variety of emulsions from low-viscosity liquids to high-viscosity gels can be prepared. Makes formulation design more flexible, less expensive, and allows production to be operated at room temperature.
This new process has the following advantages over traditional emulsification methods: simplified formulation, easy to use, single-time synthesis of emulsions, no surfactants, cold process adoption - no need to dissolve surfactants, significantly shorter production time, optimization costs, and customized formulations based on the shearing thinning of the tactability fluid behavior.
3.5 Synthetic bentoyl is used as a film additive
and, like many other collion materials, synthetic benthic is a natural film-forming substance. Based on the special shape and anionability of synthetic bento-earth crystals, synthetic benthic soil can give the membrane more practical functions: conductivity, anti-static, barrier performance, anti-adhesion. Synthetic benthic coating film can be simply made by applying synthetic
and sol to paper. Standard coating methods include scraping sticks, soaking or pastel printing. Coating mixtures made from emulsion substrates such as polyurethanes, acrylics, vinyl acetate or other emulsions are suitable for a variety of substrates (polymer film, extruded profiles, injection molds (polypropylene, polycarbonate, polyester, ABS, PVC), glass, paper, metal, wood, etc.).
3.5.1 How does synthetic benthic soil work against static electricity
When coated on a substrate, synthetic benthic soil conducts electricity through the following two independent processes. The first is electrons, where synthetic bentographic coatings can form continuous cross-over or overlapping charged particle coatings, which work independently of relative humidity (RH) (Figure 6).is ionized free water - when the relative humidity is 50%, synthetic benthic coatings typically absorb 15% free water. The water present in the synthetic bentosic structure is partially lost at low relative humidity. Structural water - About 8% of the water in synthetic benthic soil is chemically adsorbed in the structure and is released only when the temperature reaches 150 degrees C. The conductive process can be carried out by this high concentration ion solution. Depending on the amount of coating and the type of substrate, synthetic benthic soil can be used to prepare coatings with surface resistances in the range of 106 to 1012 s/m2.
3.5.2 The advantages of synthetic bentoylated soil over polymer resins
Because the anti-static properties of polymer resins are realized by physically absorbing the water release charge, the moisture is lost quickly when the relative humidity of the air decreases, resulting in a significant decrease in its conductivity. Synthetic benthic coatings are not easily soluble and can be recoated with water-based or solvent-based coatings. The synthetic bentographic coating is dry and non-adhesive, and can be written, printed and coated with water-based or solvent-based adhesives. Since synthetic benthic soil is inorient, its coating does not change color as it ages or heats.
3.5.3 Barrier Performance
It is estimated that synthetic bentoberry has a surface area of more than 900 m2/g, plus its unique flaky crystal structure, which provides barrier function in coatings or dispersed media. When dispersed in liquid or gel media, the special structure provided by synthetic benthic particles prevents or reduces the interaction between different phases. This role is reflected in many "2 in 1" products, can significantly improve stability: such as colored toothpaste, water-wrapped colorful coatings, multi-channel coatings. Particles need to go through a long and tortuous route through the synthesis of bentographic coatings, which effectively prevents the migration of polymer or collome particles between the two coatings, as shown in Figure 7.4 Conclusion
Bentonized soil in China is rich in storage, with its characteristics and the role of the in-depth study, through the modified preparation of new synthetic bentonish additives, it can be applied to coatings, not only to improve the application of coating performance and construction conditions, but also to reduce the cost of coatings, with broad application prospects..