摘要:
The present invention provides transparent chips with natural-like metal texture by coating silica-containing transparent chips with colored material like a metal powder in a highly transparent resin as base resin. The present invention also provides artificial stone with natural-like metal texture and patterns by mixing the colored material coated transparent chips and inorganic filler with the matrix polymer resin. The artificial stone of the present invention is prepared by mixing about 4 to 24 parts by weight of inorganic filler and about 0.1 to 5.0 parts by weight of the colored material coated transparent chips per 1 part by weight of base resin. The colored material coated transparent chips have a gravity of about 2.0 to about 2.65, while the matrix resin has a gravity of about 2.2 to about 2.8, and the gravity of the transparent chips should be equal to or lower than that of the matrix resin in order to distribute transparent chips uniformly in the matrix resin.
摘要:
The invention is a composition, for use in treating oil wells, comprising fibres, hot melt adhesives and particulate solids. This composition has a wide range of applications including preventing or lessening lost circulation, wellbore strengthening or consolidation, controlling fluid loss, producing a "stress cage" effect, gravel packing, acting as an aid to cementing, and for proppant backflow control.
摘要:
The invention relates to an additive for additive comprising stone powder, in which the particle diameter is 2―1000 µm, which particles are coated with a substantially water-insoluble surface-active coating agent, and the use of the additive and a method for manufacturing the additive. The invention also relates to a method for improving the freeze-thaw durability of the concrete, and a concrete.
摘要:
The invention concerns a method for treating surfaces of elastomer-based granular materials, in particular for improving the interface conditions between the latter and a hydraulic, hydrocarbon binder or any synthetic resin. The method includes the following steps: providing a plurality of elastomer-based granular materials (10), applying a surfactant (14) to the surface (S) of the elastomer-based granular materials (10), applying a polymer resin (16) to the surface of the granular materials, applying a hydraulic type binder (18) to the surface of the granular materials.
摘要:
A concrete article comprised of concrete having therein a reinforcing fiber, where at least 50 percent of the reinforcing fibers are frayed only at an end or ends of the reinforcing fibers, may be made by mixing concrete, water and a reinforcing fiber for a sufficient time to fray the ends of at least 50 percent of the fibers and curing the mixture to form the concrete article. The fiber may be a reinforcing fiber comprised of at least two filaments bonded together and the filaments being comprised of a polymeric core and a polymeric sheath comprised of a fusing-fraying polymer, such that the reinforcing fiber, when mixed with inorganic particulates, frays predominately only at an end or ends of the fiber.
摘要:
A concrete article comprised of concrete having therein a reinforcing fiber, where at least 50 percent of the reinforcing fibers are frayed only at an end or ends of the reinforcing fibers, may be made by mixing concrete, water and a reinforcing fiber for a sufficient time to fray the ends of at least 50 percent of the fibers and curing the mixture to form the concrete article. The fiber may be a reinforcing fiber comprised of at least two filaments bonded together and the filaments being comprised of a polymeric core and a polymeric sheath comprised of a fusing-fraying polymer, such that the reinforcing fiber, when mixed with inorganic particulates, frays predominately only at an end or ends of the fiber.
摘要:
A concrete article comprised of concrete having therein a reinforcing polymer that has a surface comprised of a thermoplastic hydroxy-functionalized polyether or polyester. The concrete article is made by mixing concrete, water and a reinforcing polymer that has a surface comprised of a thermoplastic hydroxy-functionalized polyether or polyester and curing said concrete mixture forming the concrete article.
摘要:
In the preparation of aqueous cement compositions containing a plasticizer, such as an EO/PO polymer-containing plasticizer, or EO/PO comb polymer-containing plasticizer, and further containing clay, such as a smectite clay, which expands when in contact with water, the step of providing an agent operative to modify the clay whereby the plasticizer absorbing capability of the clay is reduced. In exemplary methods of the invention, the plasticizer is an EO/PO (e.g., oxyalkylene) plasticizer and preferably an EO/PO comb polymer, and the clay-activity-modifiying agent may comprise an inorganic cation, an organic cation, a polar organic molecule capable of being absorbed by the clay, a clay dispersant (such as a polyphosphate), or a mixture thereof. For clay-activity-modifying agents which comprise a cation or a polar organic molecule, the agent is preferably added to the clay before water is introduced to the clay. For clay dispersant agents and some organic cations such as quaternary amines (which have a strong affinity for cationic exchange with the clay), the agent may be added before, during, or after water is introduced to the clay.
摘要:
A method of manufacturing a finished product from a lignocellulosic material selected from the group consisting of lignocellulosic particles or fibres, soft boards, and board precursors in sheet form includes the steps of impregnating the lignocellulosic material with an impregnating composition consisting of a mineral oil and a liquid thermosetting resin, optionally with a catalyst therefor. Thereafter, the lignocellulosic material is compressed with heating to allow the mineral oil to infuse the lignocellulosic material and to polymerise the thermosetting resin to form the finished product.