1-20 of 372 Search Results for

polymer cross linking

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 January 2005
Fig. 2 Thermoset elastomers are long-chain polymers connected by cross links represented by circled Xs. More
Image
Published: 01 January 1997
Fig. 10 Schematic of a cross-linked polymer More
Image
Published: 01 January 2005
Fig. 4 Elastomers may be cured in one or two stages. The stages proceed from top to bottom. (a) Polymer chains are not connected. (b) Heat drives the chemistry of cure. Many cross links are formed. Some polymer chains are well connected. Elastomeric properties are created. (c) Higher More
Image
Published: 01 June 2012
Fig. 4 Comparison of the amount (dose) of particles per year that results from reported size and wear rate data ( Fig. 2 and 3 ). This graphically demonstrates that the smaller size of the particles associated with highly cross-linked polymer particles es reduction in the amount of wear More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006044
EISBN: 978-1-62708-172-6
... and reactivity of acrylic polymers. Co-polymerized acid functional monomers, such as acrylic acid and methacrylic acid, provide electrostatic stabilization to waterborne latex polymers when they are neutralized, and they offer sites for various cross-linking reactions. Amine functional monomers...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
... between thermoplastics and thermosets. These materials can be re-formed somewhat, but not completely, with the application of heat. Their properties are midway between the two extremes because their bonding is midway between. These polymers have long, individual molecules that are lightly cross linked...
Image
Published: 01 June 2012
-polymer, Ref 9 ; ceramic-polymer, Ref 10 ; metal-cross-linked polymer, Ref 11 , Ref 12 , Ref 13 , Ref 14 ; metal-metal, Ref 15 ; and ceramic-ceramic, Ref 16 More
Image
Published: 01 January 2003
Fig. 2 (a) Simulated cross linked (networked or three-dimensional) structure. (b) Simulated linear polymer molecule. (c) Simulated structure of a branched polymer More
Image
Published: 01 January 2000
Fig. 15 Schematic representation of the structure of a phenol formaldehyde. (a) Two phenol rings join with a formaldehyde molecule to form a linear chain polymer and molecular by-product. (b) Excess formaldehyde results in the formation of a network, thermosetting polymer due to cross-linking. More
Image
Published: 01 June 2012
, Ref 10 ; metal-cross-linked polymer, Ref 11 , Ref 12 , Ref 13 , Ref 14 ; metal-metal, Ref 15 ; and ceramic-ceramic, Ref 16 More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003255
EISBN: 978-1-62708-176-4
...). Most common polymers have carbon (organic material) backbones, though polymers with inorganic backbones (e.g., silicates and silicones) are possible. Polymeric materials exhibit strong covalent bonds within each chain; however, individual chains are frequently linked via secondary bonds (i.e., van der...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006077
EISBN: 978-1-62708-172-6
.... There is a relatively large number of epoxy coating systems, because there are a number of epoxy resins of different molecular weights and compositions, as well as a number of cross-linking agents that co-polymerize with those epoxy resins. Each is discussed in some detail, although materials suppliers always...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003848
EISBN: 978-1-62708-183-2
... of this article is the use of elastomers as seals. Also see the article “Environmental Performance of Rubber Linings” in this Volume. Thermoplastic materials are long-chain polymers that are not connected by cross links ( Fig. 1 ). Very few elastomers are the thermoplastic type. They acquire...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003692
EISBN: 978-1-62708-182-5
... Acrylic coatings can be formulated as thermoplastic solvent-deposited coatings, cross- linked thermoset coatings, and water-based emulsion coatings. Acrylic resins that are used for protective coatings consist of polymers and copolymers of the esters of methacrylic and acrylic acid. The chemical structure...
Image
Published: 31 December 2017
Fig. 2 (a) Static and dynamic friction against stainless steel of 70 wt% poly(vinylidene fluoride) (PVDF) + 30 % cross-linked ultrahigh-molecular-weight polyethylene (XL-UHMWPE) as a function of carbon black (CB) concentration. (b) Volume resistivity change of the neat polymer and blends More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006041
EISBN: 978-1-62708-172-6
... with these soluble FEVE resins. Hydroxyl functionality is incorporated into many FEVE resins, allowing them to be cross linked via polyisocyanates or amino resins. Low-hydroxyl-functional FEVE resins are available for one-component (i.e., 1K) coatings. Physical properties such as flexibility and chemical resistance...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006009
EISBN: 978-1-62708-172-6
... polymers bearing either hydroxyl or carboxyl groups. However, they do not have any ethylenic (–C=C–) double-bond saturation in their backbone chain. They cross link by reacting further by a condensation reaction with other resins that copolymerize with the hydroxyl and/or carboxyl pendant groups...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006051
EISBN: 978-1-62708-172-6
... desired. The designing of a polymer is sometimes referred to as molecular engineering. The polymer chain may be cross linked with other chains if its individual components remain reactive after the polymer is formed. A cross-linked polymer is called a thermoset, whereas a polymer that is not cross linked...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002464
EISBN: 978-1-62708-194-8
... polymer chains, the polymer is cross-linked. London Dispersion Forces London dispersion forces are the weakest of the secondary bonds with energies of 4 to 8 kJ/mol and an intermolecular distance of 3 to 5 Å ( Ref 21 ). They are the only secondary interactions in linear, nonpolar hydrocarbons...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006555
EISBN: 978-1-62708-290-7
... The surface of a photosensitive liquid thermoset polymer is exposed to a prescribed wavelength of “light,” which chemically initiates the cross-linking reaction. This results in the formation of a solid in the liquid where the material is exposed to the light. Wavelengths often lie in the ultraviolet range...