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liquid impregnation

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003422
EISBN: 978-1-62708-195-5
.... The article discusses matrix precursor impregnants, liquid impregnation, and chemical vapor infiltration (CVI) for densification of CCCs. It presents various coating approaches for protecting CCCs, including pack cementation, chemical vapor deposition, and slurry coating. Practical limitations of coatings...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003419
EISBN: 978-1-62708-195-5
... 28 4.1 620 90 2.1 UD PP Commingled yarn 0.35 28 4.1 700 100 … 0.52 38 5.5 800 120 … Fabric (b) PP Commingled yarn 0.35 15 2.2 350 51 … Fabric PA 12 Partly melt-impregnated fabric 0.52 26 3.8 350 51 1.6 Thermoset composites Mat UP Liquid...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003789
EISBN: 978-1-62708-177-1
...× Abstract Abstract This article provides information on the microstructure of powder metal alloys and the special handling requirements of porous materials. It covers selection, sectioning, mounting, grinding, and polishing, and describes procedures, such as washing, liquid removal, and impregnation...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001318
EISBN: 978-1-62708-170-2
... by mixing the carbonaceous and nonoxide inhibitor powders and consolidating the constituents to form the carbon body, or by impregnating the porous body with liquids that contain the inhibitors, usually in oxide form. Boron and many nonoxide boron compounds are quite refractory, so the powder mixing...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003373
EISBN: 978-1-62708-195-5
..., or by using highly graphitic pitch-precursor materials for liquid impregnation. For purely structural applications, a less- graphitic and more-glassy carbon matrix material is often used, which requires less high-temperature processing. Diamond as a matrix material is not commercially available due...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001317
EISBN: 978-1-62708-170-2
... modification of the standard impregnation method is achieved by suspending the carrier material (powder or particulate) in a solution of the catalytic precursor materials. The catalytic material is then slowly precipitated onto the carrier by adjusting the pH of the liquid impregnating solution. The resulting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... Space Structures Other Applications Fiber Selection Manufacturing Fiber Properties Bulk Properties Axial Properties Transverse Properties Matrix Precursor Impregnants Liquid Impregnation Chemical Vapor Infiltration (CVI) Fundamentals of Protecting Carbon-Carbon...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003413
EISBN: 978-1-62708-195-5
... to be used alongside existing prepreg processes. Resin-film infusion or vacuum-impregnation techniques will likely be used where prepreg is displaced for large structures and relatively simple shapes such as aerodynamic surfaces. One of the principal advantages of liquid molding is the absence...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006099
EISBN: 978-1-62708-175-7
... rearrangement if the two components (solid and liquid phase) have significant solubility. Similarly, infiltration occurs where an external source of liquid comes in contact with a porous component and is pulled through the PM part via capillary pressure. Infiltration and impregnation are similar to each other...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002465
EISBN: 978-1-62708-194-8
.... Source: Ref 1 , 2 Resin, carbon, or metal matrix, with or without fillers, can be added to the reinforcement fibers or woven fabric as a partially staged resin (partially solidified, stabilized, or cured liquid resin) or as a metal sheet or foil or powder form, or matrix material can be added...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003421
EISBN: 978-1-62708-195-5
... that exist in the preform. Usually, reimpregnation is done by immersing the part in the liquid polymer in a vacuum bag, while higher- viscosity polymers require pressure impregnation. Typically, the amount of porosity will reduce from 35% to less than 10% after about five impregnations. Significant gas...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003432
EISBN: 978-1-62708-195-5
... to control the rate of reaction. The article describes the component material tests, mixed resin system tests, and prepreg tests for the resin system. These tests include high-performance liquid chromatography, infrared spectroscopy, and gel permeation chromatography. The article contains a table that lists...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006048
EISBN: 978-1-62708-172-6
... was stored outside for 5 years before being put into use. Fig. 11 (a) After minimal surface preparation, the melted microcrystalline wax is flood coated over the pipe using an underragging device to ensure an even coating on the bottom. (b) A wax-impregnated outerwrap is spirally applied. (c...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... reinforcement preform is impregnated with a liquid resin in an injection or transfer process ( Fig. 1 ). A preform of reinforcement fibers, such as a stampable glass mat, enters the process as a roll of flat sheet material and is preformed into a three-dimensional geometry by means of a shaping die...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003441
EISBN: 978-1-62708-195-5
... contentFiber weightFlowGelRDS viscosityVolatilesTack/drape Cured impregnated system Completeness of cure Glass transition DSC Moisture resistance Weight gain Thermal properties TGA Thermal conductivity Laminate properties Ply thickness Fiber volume HPLC, high-performance liquid...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009080
EISBN: 978-1-62708-177-1
... materials. It discusses two main methods for manufacturing prepregs, namely, single-pass impregnation and double-pass impregnation. The article illustrates reflected-light optical microscopy techniques to evaluate the morphology of thermoplastic materials for determining the material quality and correlating...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001457
EISBN: 978-1-62708-173-3
... in a carbon or graphite matrix. The fibers have been made into yarns that are then woven into either two-dimensional fabrics or three-dimensional bodies of the desired shape. These preforms are then combined with a matrix to form a composite by either of two processes: liquid impregnation or chemical-vapor...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003406
EISBN: 978-1-62708-195-5
... construction. A, layer with surfacing veils impregnated with 90 to 95% resin; B, two-layer laminate having 450 g/m 2 powder-bonded mat, preferably with 20 Tex ECR fiber, or an equal thickness made of a silane-sized ECR spray roving (glass content should be 20–30%); A + B, chemical-resistant liner (preferably...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006119
EISBN: 978-1-62708-175-7
... 304LSC 0.8 2.0 620 1284 6 (a) Drilling speed used was 700 rpm, drilling depth was 12 mm (0.5 in.) feed rate was 0.06 mm/rotation. An uncoated, 3.5 mm diameter M2 high speed steel drill without coolant was used. Effect of resin impregnation and sintering parameters on machinability...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003402
EISBN: 978-1-62708-195-5
... impregnated prepregs, fibers with the liquid thermoset resin applied on the fly, or a stationary network of fibers impregnated with resin. The low viscosity of thermoset resin allows for this versatility. However, the disadvantage is introduction of complex chemical reaction and the gelling and curing...