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Building materials incorporated with hydrophobic silicone resin(s)

一种建筑材料、硅树脂的技术，应用在陶瓷材料生产、薄料处理、运输和包装等方向，能够解决粘稠乳液施涂费力、没有消除冻融损害、易变色等问题

Inactive Publication Date: 2011-04-13
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applications involving viscous emulsions are laborious and the presence of organic solvents in some of the compositions described is undesirable in view of today's restrictions on VOCs
These compositions reduce but do not eliminate freeze-thaw damage and may be prone to discoloration after prolonged exposure

Method used

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  • Building materials incorporated with hydrophobic silicone resin(s)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-

[0060] Example 1 - Artificial Stone

[0061] A premix of lime, sand and water is prepared, releasing a great deal of heat in the process, resulting in a product containing various amounts of calcium silicate, and possibly unreacted sand and / or slaked lime. Will BS1321 is added to the lime and sand premix along with pigments and sufficient water to ensure that the material can be compacted in a mold to give an easily handled green mass. The ingredients were blended in the mixer for about 4-6 minutes prior to compaction. Once the block was made, the block was autoclaved at a temperature of 163-177°C and a pressure of 125 psi for approximately 9 hours. The optimal amount of adding hydrophobic silicone resin is 0.05-1.5% by weight. Best performance was achieved with 3.6 lbs of silicone for 4000 lbs of calcium silicate.

Embodiment 2

[0062] Example 2 - Fiber Cement Board

[0063] To a fiber cement slurry having a consistency of 20-23% by weight solids in water, such as one of cellulosic fibers, fly ash, calcium carbonate and cement, the desired amount of BS1321, and mix for about 15 minutes. The grout was diluted with water to 7% solids by weight. Anionic polymer flocculation aids and defoamers are added to the diluted slurry to obtain fiber cement solids. Fiber cement is formed, pressed and dried at 100% humidity and a temperature of 62° C. for about 8-9 hours into a shape such as a plate. Once dry, the fiber cement board was autoclaved at a pressure of 100-150 psi and a temperature of 148-177°C for a total of 9 hours. The amount of resin used may be 0.01-2% by weight depending on the physical properties and water properties required by the fiber cement manufacturer.

Embodiment 3

[0064] Example 3 - Formation of silicone impregnated stone product

[0065] To form the inorganic curable matrix, sand is placed on a conveyor belt and water is added. Add the silica and lime and additional water. The material matrix was placed in an 80-ton reactor to hydrate the lime for 10 hours. The process of matrix formation can become alkaline and can also generate a lot of heat at the same time. Just after this alkaline premix step, the hydrophobic silicone was added as described below.

[0066] In a 4000 lb batch, the silica and lime mixture was passed through a grinder into a mixing vessel. Add varying amounts of hydrophobic silicone to each batch BS1321. Mix the mixture thoroughly for 3 minutes. A 1000-ton press is used to form blocks, which are then cured by hot pressing. Curing was performed at a temperature of 350F with steam at a pressure of 160 psi. Curing was carried out for 9 hours. Block samples of dimensions 2″*2.75″*2.75″ containing various loadings...

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Abstract

An inorganic matrix building material with enhanced water impermeability is prepared by curing an inorganic curable matrix and at least one particulate hydrophobic silicone resin substantially uniformly incorporated within the matrix, the at least one hydrophobic silicone resin being selected from the group consisting of a TD resin, an MQ resin, an MT resin, an MQT resin, and combinations thereof. In certain particular instances, the at least one hydrophobic silicone resin is a TD resin. The curing takes place at elevated temperature, optionally at elevated pressure.

Description

technical field [0001] The invention relates to a hot-pressed inorganic building material in which solid particle hydrophobic silicone resin is uniformly mixed, and a manufacturing method thereof. Background technique [0002] Traditional inorganic-matrix building materials, including engineered stone, concrete blocks, and fiber-reinforced concrete slabs, can be susceptible to weathering and freeze-thaw damage, often associated with water absorption by building materials. For example, penetration of moisture into even natural permeable stone substrates can cause these materials to swell, fracture, and ultimately lead to structural deterioration of building materials. Moisture also seriously promotes bacterial invasion and erosion, which can lead to unsightly discoloration. Masonry materials based on inorganic binders can also suffer from the same degradation due to freeze-thaw conditions, leading to what are known as spalling and cracking. [0003] Thus, a material's susce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B28/02C04B28/18C04B111/27
CPCC04B2111/27C04B28/18C04B24/42C04B28/02C04B2103/65Y10T428/31663Y02P40/60C04B14/06C04B20/0048C04B40/024
Inventor H·阿克曼M·A·D·阿泽维多R·L·柯克帕克里特
Owner WACKER CHEM GMBH
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