Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

Laminate guide Laminate Construction Guide Polyester Resins Structural Lay-Up Isophthalic Laminating Bond Coat B The majority of all ?berglass parts are constructed using polyester resins Polyester resins are easy to use fast curing tolerant of temperatur

Laminate Construction Guide Polyester Resins Structural Lay-Up Isophthalic Laminating Bond Coat B The majority of all ?berglass parts are constructed using polyester resins Polyester resins are easy to use fast curing tolerant of temperature and catalyst extremes cost less that epoxies and vinyl ester resins and can be used with gel coat For general purpose parts made by hand lay-up TAP ? s Structural Lay-Up resin is ideal Lay-Up resin is drain-resistant thixotropic has a moderately low heat build-up exotherm wets out quickly and cures fast after the laminating is done Vinyl Ester Resin Vinyl ester resin is typically used when high durability thermal stability and high corrosion resistance are needed Vinyl ester is often used to produce and repair ?berglass boat hulls to reduce blistering and osmotic problems Vinyl ester falls between polyester and epoxy on price and physical properties Vinyl ester does exceed both polyester and epoxy in corrosion resistance temperature resistance and toughness Epoxy Resins Epoxy is to times the cost of polyester resins but o ?ers higher strength to weight ratios and less shrinkage for close tolerance work Epoxy has tenacious adhesive properties TAP ? s Premium Marine Grade Epoxy system has a choice of three hardeners for curing resin The three hardeners o ?er di ?erent cure times viscosities and physical properties Purchase resin in bulk and keep all three hardeners on hand for any project Reinforcement Reinforcements are selected based on the needs of the ?nished part List your needs lightweight sti ?ness abrasion resistance damage tolerance cost and ease of lay-up Compare your list to the descriptions listed below Mat Mat is a sheet form of ?berglass Mat is the weakest reinforcement but mat has multi-directional strength Mat is made up of chopped glass strands up to inches long held together with a binder soluble in polyester resin Mat is used to inexpensively build up sti ?ness Epoxy is not recommended for mat Mat readily conforms to compound curves One gallon of resin will wet out sq ft of mat Woven Roving Roving is a glass woven in a coarse weave It o ?ers better tensile and exural strength than mat Roving has a loose weave and this conforms to contours well Its strength is bidirectional like cloth so often multiple plies are laid at di ?erent angles to each other Woven Roving is often used on large parts like boat hulls and auto bodies One gallon of resin will wet out sq ft of woven roving Glass Cloth E-Glass Cloth is the most expensive form of ?berglass and the strongest woven material on an equivalent weight basis Cloth is used as a ?nishing layer for better appearance or in a light weight high strength laminate One gallon of resin will wet out sq ft of cloth Core Materials When parts need sti ?ness and strength without signi ?cant increases in weight core materials are sandwiched between layers of ?berglass These core materials may be honeycomb wood foam etc CTAP sells BaltekMat BaltekMat