Low-Density, Mutually Interpenetrating Organic-Inorganic Composite Materials via Supercritical Drying Techniques

1994 ◽  
Vol 6 (3) ◽  
pp. 282-286 ◽  
Author(s):  
Bruce M. Novak ◽  
David Auerbach ◽  
Celine Verrier
Keyword(s):  
Composite Materials ◽  
Supercritical Drying ◽  
Low Density ◽  
Drying Techniques ◽  
Inorganic Composite

scholarly journals High Mechanic Enhancement of Chopped Carbon Fiber Reinforced-Low-Density Unsaturated Polyester Resin Composite at Low Preparation Temperature with Facile Polymerization

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4273
Author(s):  
Jian Zhang ◽  
Xiaojun Wang ◽  
Xinjun Fu
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Low Temperature ◽  
Surface Defect ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Low Density ◽  
Fiber Reinforced ◽  
Preparation Temperature

Chopped carbon fiber-reinforced low-density unsaturated polyester resin (CCFR-LDUPR) composite materials with light weight and high mechanical properties were prepared at low temperature and under the synergistic action of methyl ethyl ketone peroxide (MEKP-II) and cobalt naphthenate. Optimal preparation conditions were obtained through an orthogonal experiment, which were preparation temperature at 58.0 °C, 2.00 parts per hundred of resin (phr) of NH4HCO3, 4.00 phr of chopped carbon fibers (CCFs) in a length of 6.0 mm, 1.25 phr of initiator and 0.08 phr of cobalt naphthenate. CCFR-LDUPR composite sample presented its optimal properties for which the density (ρ) was 0.58 ± 0.02 g·cm−3 and the specific compressive strength (Ps) was 53.56 ± 0.83 MPa·g−1·cm3, which is 38.9% higher than that of chopped glass fiber-reinforced low-density unsaturated polyester resin (CGFR-LDUPR) composite materials. Synergistic effects of initiator and accelerator accelerated the specific polymerization of resin in facile preparation at low temperature. Unique “dimples”, “plate microstructure” and “surface defect” fabricated the specific microstructure of the matrix of CCFR-LDUPR composite samples, which was different from that of cured unsaturated polyester resin (UPR) with “body defect” or that of CGFR-LDUPR with coexistence of “surface defect” and “body defect”.

Clay Aerogel Composite Materials

2010 ◽  
Vol 63 ◽  
pp. 147-151 ◽  
Author(s):  
David A. Schiraldi ◽  
Matthew D. Gawryla ◽  
Saeed Alhassan
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Environmentally Friendly ◽  
Porous Ceramics ◽  
Low Density ◽  
Polymer Foams ◽  
Freeze Dried ◽  
Aerogel Composite ◽  
Environmentally Friendly Process

A simple, inexpensive, and environmentally-friendly process for converting mixtures of clays and polymers has been developed. Polymer and clay are combined in water, and the mixtures are freeze dried to produce materials which have bulk densities typically in the range of 0.03 – 0.15 g/cm3. These low density polymer/clay aerogel materials possess good mechanical properties similar to those of traditional polymer foams, can be reinforced with fibers, modified with nanoparticles, biomineralized, or converted into porous ceramics.

scholarly journals ANALISIS KEKUATAN TARIK DAN IMPAK MATERIAL KOMPOSIT POLIMER DALAM APLIKASI FIBERBOAT

2021 ◽  
Vol 4 ◽  
pp. 121-126
Author(s):  
Rezza Ruzuqi ◽  
Victor Danny Waas
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Materials ◽  
Impact Strength ◽  
Metal Corrosion ◽  
Phase System ◽  
Low Density ◽  
Weight Percentage ◽  
Multi Phase ◽  
The Impact

Composite material is a material that has a multi-phase system composed of reinforcing materials and matrix materials. Causes the composite materials to have advantages in various ways such as low density, high mechanical properties, performance comparable to metal, corrosion resistance, and easy to fabricate. In the marine and fisheries industry, composite materials made from fiber reinforcement, especially fiberglass, have proven to be very special and popular in boat construction because they have the advantage of being chemically inert (both applied in general and marine environments), light, strong, easy to print, and price competitiveness. Thus in this study, tensile and impact methods were used to determine the mechanical properties of fiberglass polymer composite materials. Each test is carried out on variations in the amount of fiberglass laminate CSM 300, CSM 450 and WR 600 and variations in weight percentage 99.5% -0.5%, 99% -1%, 98.5% -1, 5%, 98% -2% and 97.5%-2.5% have been used. The results showed that the greater the number of laminates, the greater the impact strength, which was 413,712 MPa, and the more the percentage of hardener, the greater the impact strength, which was 416,487 MPa. The results showed that the more laminate the tensile strength increased, which was 87.054 MPa, and the more the percentage of hardener, the lower the tensile strength, which was 73.921 MPa.

scholarly journals Composites with carbon nanotubes and graphene: An outlook

Science ◽  
2018 ◽  
Vol 362 (6414) ◽  
pp. 547-553 ◽  
Author(s):  
Ian A. Kinloch ◽  
Jonghwan Suhr ◽  
Jun Lou ◽  
Robert J. Young ◽  
Pulickel M. Ajayan
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Load Transfer ◽  
High Strength ◽  
Low Density ◽  
Interfacial Engineering ◽  
Challenges And Opportunities ◽  
The Status ◽  
Practical Impact

Composite materials with carbon nanotube and graphene additives have long been considered as exciting prospects among nanotechnology applications. However, after nearly two decades of work in the area, questions remain about the practical impact of nanotube and graphene composites. This uncertainty stems from factors that include poor load transfer, interfacial engineering, dispersion, and viscosity-related issues that lead to processing challenges in such nanocomposites. Moreover, there has been little effort to identify selection rules for the use of nanotubes or graphene in composite matrices for specific applications. This review is a critical look at the status of composites for developing high-strength, low-density, high-conductivity materials with nanotubes or graphene. An outlook of the different approaches that can lead to practically useful nanotube and graphene composites is presented, pointing out the challenges and opportunities that exist in the field.

Organic/inorganic composite materials: the roles of organoamine ligands in the design of inorganic solids

1999 ◽  
Vol 190-192 ◽  
pp. 737-769 ◽  
Author(s):  
Douglas J. Chesnut ◽  
Douglas Hagrman ◽  
Pamela J. Zapf ◽  
Robert P. Hammond ◽  
Robert LaDuca ◽  
...  
Keyword(s):  
Composite Materials ◽  
Inorganic Solids ◽  
Inorganic Composite

Research Advancement of C/C Woodceramics

2012 ◽  
Vol 598 ◽  
pp. 497-503
Author(s):  
Wei Li Zhang ◽  
Jian Zhu ◽  
Ping Wang ◽  
Ke Lin Li ◽  
Ming Jing Lei ◽  
...  
Keyword(s):  
Composite Materials ◽  
Sintering Temperature ◽  
Resin Content ◽  
Raw Material ◽  
Material Source ◽  
Structure And Property ◽  
Inorganic Composite

C/C woodceramics is one of the polymeric organic/inorganic composite materials, and it has many advantages such as rich raw material source, little harm to environment in its production and use, good renewable property and wide application. In recent year, it is highly important and significant for C/C woodceramics study. The changes of C/C woodceramics’ structure and property influenced by different wood types, sintering temperature, and resin content are summarized comprehensively in this paper. Preparation mechanism and properties of woodceramics are also concluded. In the final, problems found in the field of C/C woodceramics research have been put forward and discussed.

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