简单形式的透明的苯乙烯-马来酸酐共聚物(S—MA)是通过苯乙烯单体与少量的马来酸酐单体反应制得的。马来酸酐单体无规地接到PS主链上，增加了玻璃化转变和热变形温度。一般苯乙烯-马来酸酐共聚物产品的热变形温度都超过260°F。在注塑成型时，即使温度超过550°F时，这种聚合物的性能仍然相当稳定。
The simple form of transparent styrene maleic anhydride copolymer (s-ma) is prepared by the reaction of styrene monomer with a small amount of maleic anhydride monomer. The maleic anhydride monomer is randomly connected to the PS main chain, which increases the glass transition and thermal deformation temperature. Generally, the thermal deformation temperature of styrene maleic anhydride copolymer products exceeds 260 ° F. During injection molding, the properties of this polymer are quite stable even when the temperature exceeds 550 ° F.
在反应阶段，橡胶段接校在聚合物上，可以使之具有很好的韧性。在许多工程应用中，为了满足韧度要求，这一过程是关重要的。
In the reaction stage, the rubber segment is connected to the polymer, which can make it have good toughness. In many engineering applications, this process is very important to meet the toughness requirements.
在许多应用中，需要通过玻璃纤维补强来增加苯乙烯-马来酸酐共聚物的强度和硬度。在通过化学方法处理的玻璃纤维表面和高极性的马来酸酐组分之间，化学偶合可以很容易进行并且耐久。这种良好的粘合可以通过电子显微镜观察其复合材料的断口，而得到充分的证实。
In many applications, glass fiber reinforcement is needed to increase the strength and hardness of styrene maleic anhydride copolymer. The chemical coupling between the chemically treated glass fiber surface and the highly polar maleic anhydride component can be easily carried out and durable. This good adhesion can be fully confirmed by observing the fracture of the composite by electron microscope.
这种粘合性可以使其强度、模量、韧性(甚长期暴露在恶劣环境下)保持长期不变。性能稳定化的产品，在温度超过235°F、经过2000hr后，其主要的强度和韧性几乎没有损失。由苯乙烯-马来酸酐共聚物制成的汽车外部构件，在汽车使用寿命期内，充分保证了乘客的性。这一点是关重要的。
This adhesion can keep its strength, modulus and toughness (even long-term exposure to harsh environment) unchanged for a long time. The main strength and toughness of the products with stable performance almost have no loss after the temperature exceeds 235 ° F and 2000hr. The automobile exterior components made of styrene maleic anhydride copolymer fully ensure the safety of passengers within the service life of the automobile. This is crucial.
