【導讀】在1980年代后期的開發(fā)中，為滿足更高性能和更低維護的需求，玻璃纖。維窗戶逐漸成為人們關注的重點。由AAMA/WDMA2020/2020美國工業(yè)市場研究顯。額從%的達到%。隨著全球的建筑運動帶動對可持續(xù)產(chǎn)品的全生命周期低。消耗的需求越來越多，預計市場份額到2020年將達到%。戶及到多種復雜的可選擇配置的窗戶。纖維窗戶和其他材料窗戶提供了一個比較與分析。還包括將對指定相應的玻璃纖。材料精心打造建筑）的調(diào)查“在某些情況下，使用玻璃纖維作為窗戶結(jié)構(gòu)材料，低輻射中空玻璃釉面填充以獲得更高的性能。玻璃纖維窗框產(chǎn)生類似于乙烯基，門窗也容易出現(xiàn)腐爛，完整性則易受到破壞，使其容易剝落掉色。乙烯基窗戶價格低廉，耐用和節(jié)能，正確的設計可適當?shù)販p少熱傳遞。泄漏熱量），在炎熱的環(huán)境中存在穩(wěn)定與熱膨脹問題，現(xiàn)在的乙烯基窗戶更耐用，乙烯基添加劑配方有助于決定最終產(chǎn)品的特色，如它所。乙烯基配方的差異，以及如何利用乙烯基結(jié)構(gòu)，將決定其結(jié)構(gòu)強

　　

【正文】 es of windows. It is extremely hard and thus highly scratch, dent and impactresistant, and its strength is unaffected by time or temperature. Compatible thermal expansion. Because fiberglass frames are essentially glass fibers and resin, the frames expand and contract very little and at approximately the same rate as glass itself. If there is any expansion and contraction, the ponents expand and contract as a unit, unlike most window and door frames which have an interface of different materials: glass on wood, glass on aluminum or glass on vinyl. Aluminum is said to expand and contract three times as much as fiberglass and vinyl over seven times more. The minimal expansion and contraction of fiberglass puts less stress on the seals and frametoseal connection is maintained during temperature changes throughout the day and the seasons, thereby reducing the potential for air infiltration, a major cause of a building39。s loss of energy emciency. Natural insulation. Fiberglass is a superior insulator as it is made from a simple polymer reinforced with thin strands of pulled glass Air is trapped inside, and it will not conduct heat or cold, so that its temperature should be neutral to the touch. Because the insulation of fiberglass is so effective, and because the temperature outside will not warm or cool the actual fiberglass in the window itsel excess condensation will not form. Fiberglass39。 high condensation resistance helps keep humidity within a suitable range and limits the growth of mold and mildew. Low thermal transmittance. Fiberglass39。 low Ufactor, the ultimate determinant of energy efficiency, helps lower building operating costs and increase occupant fort. Filling the fiberglass frames with foam insulation and glazing the windows with highefficiency insulating glass adds substantially to window performance and to energyefficient window strategies including passive heating and cooling and maximum daylighting to dramatically cut energy load and increase occupant fort. Decorative options. Fiberglass is eminently paintable, and takes paint easily with excellent adhesion. Fiberglass can acmodate liquid coatings such as water and solventbased acrylic enamels and polyurethanes as well as dry powder coatings。 alternatively, pigment can be added to the resin. With low conduction of heat, and the stability in fiberglass, it can also be painted in a variety of dark colors Cost. One downside of fiberglass windows has been the cost, with prices running 20 percent to 30 percent more than the average vinyl window A key factor here is the plicated pultrusion process, which is not as fast as the extrusion process used to fabricate vinyl or aluminum frames However, with fiberglass manufacturers incorporating advancements in pultrusion, die design, fabrication, and assembly, larger quantities of fiberglass are being produced faster, with a corresponding drop in prices. In addition, while upfront costs of a fiberglass window may be higher than other window types, because of their durability, fiberglass windows may be a better value over time. Reed College in Portland, Oregon, features TudorGothic architecture and a forested canyon wilderness preserve at its center. When the school39。s Administration Building underwent a general upgrade and restoration, phase 1 included replacement of 200 windows. Pultruded fiberglass doublehung retrofit frames were installed. Because the requirements exceeded the usual height limitation for this line of windows, units were custom designed to match the historic references. The brick and granite fascia had to be equipped with dividers across the center of the middle and top story windows. On the interior, the clear vertical ir grain was easily matched with the existing finish. Fiberglass windows, which were also selected because of high energy efficiency and low environmental impact, replaced singlepane.