Thermal cross-linking

Scratch resistance of polymer from DADC is improved by novel mixtures of peroxide initiators such as 5% isopropyl percarbonate with 3.5% benzoyl peroxide (16). In order to force completion of polymerization and attain the best scratch resistance in lenses, uv radiation is appHed (17). Eyeglass lenses can be made by prepolymerization in molds followed by removal for final thermal cross-linking (18). 

Novolak resins with epichlorohydrin are thermally cross-linked, and the resultant polymer layers show excellent mechanical and dielectric properties... 

The thermal cross-linking as well as the influence of internal structural stress may give rise to some limitation of the LODP concept if hydrolytic media of different swelling powers are compared or if the range of temperatures considered exceeds 100°C. In those cases, as well as after mechanical strain on the sample, the LODP obviously is not unambiguously determined by the physical structure of the sample but depends to some extent on the conditions of hydrolysis. 

Thermal Cross-Linking of NLO Chromophore-Functionalized Poly(p-hydroxys tyrene)... 

Table II. Second-Harmonic Coefficients ( 33) and Temporal Decay Parameters for Corona-Poled, NPP-Functionalized Poly(p-hydroxystyrene) Films as a Function of Thermal Cross-Linking a...

Using TFTs with thermally cross-linked PVP as gate-dielectric layer a wide range of integrated circuits have been demonstrated. By building on coplanar bottom-... 

The nature of the organomodifier plays a role in the existence of true nanocomposite structures (intercalated for 15A and 30B, exfoliated for 25A, microcomposite for 10A), cone calorimeter results associated with x-ray diffraction (XRD) suggest that increased flame retardancy are more dependent on physical and thermal cross-linking of clay particles and polymer chains than on formation of nanocomposite structure. However, it can be concluded that the role of clay is crucial since PHRR values are reduced up to 70% in the presence of clays. 

Step 3 Rigidization of the coating by thermal, cross-linking, or desolvation techniques to form self-sustaining microcapsules. 

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