摘要:
The present invention relates to amino acid-containing sizing compositions for glass fibers, to glass fibers at least partially coated with such sizing compositions, to a variety of fiber glass products at least partially coated with such sizing compositions, and to composite materials comprising glass fibers at least partially coated with such sizing compositions. In one non-limiting embodiments, a sizing composition for glass fibers comprises an amino acid, a protein, or a hydrolyzed protein. A sizing composition for glass fibers, in another non-limiting embodiment, comprises an amino acid, a protein, or a hydrolyzed protein, at least one film-former, and at least one silane.
摘要:
Construction materials are described that contain polyoxymethylene fibers. The polyoxymethylene fibers are treated with a sizing composition that improves dispersibility. In addition to improving dispersibility, the sizing composition improves various physical properties of the resulting hardened structural material. The sizing composition, for instance, can increase impact resistance, flexural strength, compressive strength, and/or residual strength in comparison to an identical construction material containing polyoxymethylene fibers that are untreated.
摘要:
A hydraulic setting adhesive containing a hydraulic binder, fillers, a water retention agent, a sulfoalkylester surfactant, and optionally a redispersible polymer powder and/or a polymer dispersion, wherein the surfactant is represented by the formula of MSO 3 -R 1 -(-COOR 2 ) n , wherein M is selected from the group consisting of hydrogen, alkali metals, alkaline earth metals, and ammonium; R 1 is linear or branched, saturated or unsaturated C 1 -C 10 alkylene that optionally can be substituted by one or more hydroxyl, halogen, nitro or cyano groups; R 2 can be identical or different from R 1 and is represented by C 1 -C 22 linear or branched alkyl; and n is an integer from 1 to 10, and wherein the hydraulic setting adhesive based on its dry weight comprises 0.1-3% by weight of the water retention agent.
摘要:
The invention provides a process for the production of a cementious material. The process comprises mixing cement starting materials and a particulate healing agent to provide the cementious material. The healing agent comprises coated particles, wherein the coated particles comprise bacterial material and additive. The bacterial material is selected from the group consisting of a bacterium, a lyophilized bacterium and a bacterial spore of a bacterium. The present invention solves these problems, as (substantially leakage-proof) tablets containing the actual healing agent may neither interfere with either the workability of the liquid mixture ("cementious material") nor negatively affect properties of either mixture or final material (hardened concrete), even when applied in large quantities. During crack formation in cementious based constructions, the particles also crack, and healing agent is released.
摘要:
The invention relates to a vibro-acoustically effective granular aggregate for materials, e.g. concrete and similar building materials, comprising an external shell (3) with a filler made of a phase transition material (5) that can be switched using internally or externally effective fields, e.g. mechanical stress states, acoustic, electric, or magnetic fields, and at least one compact material which is embedded therein and can vibrate in said filler according to the physical condition of the phase transition material (5), whereby the mechanical state of the surrounding material is characterized and the vibro-acoustic behavior of the surrounding material is influenced.
摘要:
This invention relates to a powder comprising a carrier material which is in powdery form and selected from the group consisting of a water-soluble polymer, a water-insoluble polymer, and an inert inorganic material, and a mixture containing at least about 5 wt.% of a compound having the formula (l-a) and at least about 5 wt.% of a compound having the formula (l-b), HO-(R 2 O) m -H (l-a), R 1a O-(R 2a O) n -H (l-b). Claimed also are a process to make the powder, its use, as well as a dry mortar formulation containing the same.
摘要:
Suggested is a method for improving air entrainment, comprising the steps of: (i) providing a compound (a) selected from the group consisting of an amphoteric, an alkyl polyglycoside, an ester, an optionally alkoxylated triglyceride, a triglyceride derivative, a fatty alcohol, an alkoxylated fatty alcohol, an alkoxylated polyhydric fatty alcohol, and mixtures thereof; (ii) dispersing the compound on a particulate carrier to form a treated carrier; and (iii) adding the treated carrier to a cementitious mixture.
摘要:
Die Erfindung betrifft R- E- und/oder ECR- Glasfasern, die eine Schlichte mit zumindest einem Mehrkomponenten-Filmbildner, einem Gleitmittel und einem Haftvermittler enthält.
摘要:
A mineral composition that contains at least about 90 weight percent of headlap granules, at least about 50 weight percent of calcium carbonate, less than about 100 parts per million of a metal selected from the group consisting of arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver, and less than about 100 parts per million of a polycyclic aromatic hydrocarbon. This composition, when tested in accordance with ASTM Standard Test D 4977-03, loses less than 5 grams of material.
摘要:
The invention relates to a reinforced structure comprising a cementitious matrix and zinc coated metal elements. The structure comprises at least at the interface of the zinc coated metal elements and the cementitious matrix a compound selected from the group consisting of the imidazoles, the triazoles and the tetrazoles. The invention further relates to a zinc coated metal element for the reinforcement of a cementitious matrix and to a method to inhibit hydrogen gas evolution at the interface of zinc coated metal elements embedded in a cementitious matrix.