2025年3月7日 · Paramethoxyamphetamine (PMA) and paramethoxymethamphetamine (PMMA) are empathogens with effects similar to MDMA also known as ecstasy. 1. Most people who …

聚甲基丙烯酸甲酯（Poly (methyl methacrylate），简称PMMA)，是一种高分子聚合物，又称作亚克力或有机玻璃，具有高透明度，低价格，易于机械加工等优点，是平常经常使用的玻璃替代 …

Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparent thermoplastic, used as an engineering plastic. PMMA is also known as acrylic, …

Poly(methyl acrylate) (PMA) is a family of organic polymers with the formula (CH 2 CHCO 2 CH 3) n. It is a synthetic acrylate polymer derived from methyl acrylate monomer. The polymers are …

para-Methoxymethamphetamine (PMMA), also known as 4-methoxy-N-methylamphetamine (4-MMA), is a serotonergic drug of the amphetamine family related to para-methoxyamphetamine …

聚甲基丙烯酸甲酯，英文名 polymethyl methacrylate, PMMA, 俗称 有机玻璃 、 亚克力，是由MMA单体与少量的丙烯酸酯类共聚而成的非结晶性塑料，具有良好的透明性、光学特性、耐 …

Chemically speaking, PMMA and PMA are very similar, and their effects on the human body are virtually identical. Of the two, PMA is the one most often found in the blood samples of …

聚甲基丙烯酸甲酯 （英語： poly (methyl methacrylate)，縮寫：PMMA）是由重複單元為 甲基丙烯酸甲酯 （MMA）所合成的高度透明、無定形、 熱塑性 聚合物。 由於是最常見的 壓克力 （ …

2024年4月12日 · 1943年，德国的德固赛公司（Degussa，赢创工业集团的前身）和古莎公司（Kulzer）分别设计了一种采用共引发剂（叔芳香胺）固化PMMA的技术。与热固化相比，室 …

pmma俗称有机玻璃、亚加力等。化学名为聚甲基丙烯酸甲酯。由于pmma表面硬度不高、易擦毛、抗冲击性能低、成型流动性能差等缺点，pmma的改性相继出现。 2022/12/13 16:07:31