氯丁橡膠，是由氯丁二烯（即（jí）2-氯-1,3-丁二（èr）烯）為主要原料進行α-聚合（hé）而生產的合成橡膠，被廣泛應用於抗風化產品、粘膠鞋底、塗料和火箭燃料。

外觀為乳（rǔ）白色、米黃色（sè）或淺棕色的片狀或塊狀物，是氯（lǜ）丁二（èr）烯（即2-氯-1,3-丁二烯）為主要原料進行α-聚合生成的彈（dàn）性體。氯丁橡膠溶解度參數（shù）占δ=9.2～9.41。溶於甲苯、二（èr）甲苯、二氯乙烷、三釩乙烯（xī），微溶於丙酮、甲乙酮（tóng）、醋酸乙酯、環己烷，不溶於正己烷、溶劑汽（qì）油，但可溶於由適當比例的良溶劑和不良溶劑及非溶劑或不良溶劑和非溶（róng）劑組成的混（hún）合溶劑，在植物油和礦物油中溶脹而不溶解。

有良（liáng）好的物理機械性能，耐油，耐熱，耐燃，耐日光，耐臭（chòu）氧，耐酸（suān）堿，耐化學試劑。缺點是耐寒性（xìng）和貯（zhù）存穩定性較（jiào）差。具（jù）有較高的拉伸強度、伸（shēn）長率（lǜ）和可逆的結晶性，粘接（jiē）性好。耐老化、耐熱。耐油、耐化學腐蝕性優異（yì）。耐候性和耐臭氧老化僅次於乙丙橡膠和丁基橡膠。耐熱性（xìng）與丁腈橡膠相當，分解溫度230～260℃，短期可耐120～150℃，在80～100℃可長（zhǎng）期使用，具有一定的阻燃性。耐油性僅次於丁腈（jīng）橡膠。耐（nài）無機酸、堿腐蝕性良好。耐寒（hán）性稍差，電絕緣性不佳。生膠儲存穩定性差，會產生（shēng）“自（zì）硫”現象，門尼黏（nián）度（dù）增大，生膠變硬。

Neoprene is a synthetic rubber produced by α-polymerization of chloroprene (i.e. 2-chloro-1,3-butadiene) as the main raw material, and is widely used in weather-resistant products, viscose soles, coatings and rocket fuel.

It is milky white, beige or light brown in appearance as flakes or lumps, and is an elastomer produced by the α-polymerization of chloroprene (i.e. 2-chloro-1,3-butadiene) as the main raw material.The solubility parameters of neoprene accounted for δ=9.2~9.41.It is soluble in toluene, xylene, dichloroethane, trivanadium ethylene, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in n-hexane, solvent gasoline, but soluble in an appropriate proportion of benign solvent and bad solvent and non-solvent or a mixed solvent composed of a bad solvent and non-solvent, swelling in vegetable oil and mineral oil without dissolution.

It has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, chemical reagent resistance.Its disadvantages are poor cold resistance and storage stability.It has high tensile strength, elongation and reversible crystallinity with good adhesion. It has excellent aging resistance, heat resistance, oil resistance and chemical resistance. Its weather resistance and ozone aging resistance are second only to ethylene propylene rubber and butyl rubber.Its heat resistance is comparable to nitrile rubber, the decomposition temperature is 230~260 °C, the short-term resistance is 120~150 °C, and it can be used for a long time at 80~100 °C, and has certain flame retardancy.Its oil resistance is second only to nitrile rubber. Its resistance to inorganic acids and alkalis is good, but its cold resistance is slightly poor, and its electrical insulation is not good. Its raw rubber storage stability is poor, which will produce the phenomenon of "self-sulfur", Mooney viscosity increases, and the raw rubber becomes hard.

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