PMMA 8809德固赛---The mechanical strength of PMMA is relatively high: the relative molecular weight of PMMA is about 1.99 million, which is a long-chain polymer compound, and the molecular chain formed is very soft. Therefore, the strength of PMMA is relatively high, and its tensile and impact resistance are 8-19 times higher than that of ordinary glass. There is a kind of PMMA which has been treated by heating and stretching, in which the molecular chain segments are arranged in a very orderly way, so that the toughness of the material is significantly improved. If a nail is driven into the plexiglass, even if the nail is penetrated, there will be no crack on the plexiglass. This kind of plexiglass will not break into pieces after being punctured by a bullet. Therefore, the stretched plexiglass can be used as bulletproof glass and cockpit cover of military aircraft. The melting point of PMMA is lower: the melting point of PMMA is about 129-141c, which is much lower than that of glass at about 1000 ℃.
PMMA 8809德固赛--PMMA在香港都称亚克力，一般而言，PMMA的拉伸强度可达到50-77MPa 水平，弯曲强度可达到90-130MPa，这些性能数据的上限已达到甚至超过某些工程塑料。其断裂伸长率仅2%-3% ，故力学性能特征基本上属于硬而脆的塑料，且具有缺口敏***，在应力下易开裂，但断裂时断口不像聚***和普通无机玻璃那样尖锐参差不齐。40℃ 是一个二级转变温度，相当于侧甲基开始运动的温度，超过40℃，该材料的韧性，延展性有所改善。
The most potential use of PMMA is to produce optical media such as DVD. PMMA manufacturers said that compared with polycarbonate PC, PMMA has many advantages that the latter does not h***e, such as better optical performance and data storage performance, and better scratch resistance. They believe that PMMA will take back a large share of DVD market from PC; however, another manufacturer believes that if the price of MMA is not lowered, PMMA will not be able to compete with PC and its growth rate will not exceed that of other polymers, such as hexanediol modified PE