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Resin shrinking process

Xue L, Tabil LG, Panigrahi S (2007) Chemical treatments of natural fiber for use in natural fiber reinforced composites a review. J Polym Environ 15 25-33 Yanai Y Non-resin shrink-proof process, Caltopia. Nisshinbo Industries Inc. Miai Plant, Aichi, Japan (unpublished)... [Pg.119]

Although the present situation and the way ahead appear uncertain, it is clear that enzyme treatment alone does not fulfil the technical requirements for shrink-resist finishing. Even with enzyme treatment, some degree of chlorination (with the attendant AOX problems) and/or application of a resin will still be required. Two-stage or even three-stage processes have been proposed [116] ... [Pg.87]

Chlorine/Hercosett Also called Hercosett. A process for making wool shrink-resistant by chlorination followed by resin treatment. The resin is made by Hercules, hence the name. Developed by the International Wool Secretariat. [Pg.64]

The characteristics of the three most common thermoset resin systems used in pultrusion are compiled in Table 11.2 [3]. It is noteworthy that unreinforced polyesters and vinylesters shrink 7-9% upon crosslinking, whereas epoxies shrink much less and tend to adhere to the die. These epoxy characteristics translate into processing difficulties, reduced processing speed, and inferior component surface finish. It is normal practice to use resin additives to improve processability, mechanical properties, electrical properties, shrinkage, environmental resistance, temperature tolerance, fire tolerance, color, cost, and volatile evaporation. It is normally the resin, or rather its reactivity, that determines the pulling speed. Typical pulling speeds for polyesters tend to be on the order of 10-20 mm/s, whereas speeds may exceed lOOmm/s under certain circumstances. Apart from the resins characterized in Table 11.2, several other thermosets, such as phenolics, acrylics, and polyurethanes, have been tried, as have several thermoplastics (as will be discussed in Sec. 11.2.6). [Pg.324]

The main feature of the resins from the single-autoclave process is a broader molecular-weight distribution, which gives excellent properties for shrink-films and heavy duty packaging. [Pg.252]

Stability is directly related to the lifetime of the resin. This, in turn, directly affects the cost of the process. Physical stresses can occur through swelling and shrinking cycles due to osmotic pressure changes. Mechanical forces, such as static pressure load, and abrasion can cause breakage. Operation outside the normal temperature range will also add to particle degradation. [Pg.218]


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See also in sourсe #XX -- [ Pg.3 , Pg.38 , Pg.1444 ]




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