不飽和聚酯樹脂/波特蘭水泥複合材料之研究

Abstract

以水泥、砂、不飽和聚酯樹脂和水，或不含水，而製得的一種複合材料 。 此種有機物/無機物複合材料，呈有化學鍵結的高強度、快速硬化之性 能。例如在適宜的配比下，具超過 100MPa的抗壓強度，30MPa 的抗彎強 度。這些數值大於傳統水泥漿的約五倍。此種新的水泥基材料，可在室溫 下，於一小時內達到極限強度的約50%，而在一天內就達到約80%。由實驗 數據顯示，此材料的強度發展不只與水泥、砂、樹脂的量有關，且水含量 亦影響甚劇。藉由動力學分析，得知水泥不只是一種填充料，亦扮演化學 鍵結劑的角色。總括之，此種複合材料的強度發展非依傳統水泥水合作用 機構，而是依不飽和聚酯樹脂之聚合反應與樹脂和水泥間之化學鍵結反應 所引起。 A composite, a kind of polymer portland cement concrete( PPCC) consisted of cement, sand and unsaturated polyester either with or without water, was studied as chemically bonded high strength, fast setting cementitious material. The composite developed under the apprepriate formulation can attain a high compressive strength of over 100MPa and a flexural strength of about 30MPa, which are more than 5 times stronger than normal concrete of 20MPa for compressive strength and 5MPa for flexural strength. This ne w cementitious material attains about 50% of strength in one hour and about 80% of strength in 24 hours at the room temperature. It is found that strength development of the material depends on the amounts of cement, sand, resin kind as well as water. From kinetic analysis, It is concluded that cement is not only a filler but also acts as chemically bonded agent through the matrix of cementitious materials. The mechanism of the strength development is not according to the hydration of the normal concrete, but to the polymerization of unsaturated polyester resin and the interaction between resin and cement as well.