氯丁橡膠，是由氯（lǜ）丁二烯（即2-氯-1,3-丁二烯）為主要原料進行α-聚（jù）合而生產的（de）合成（chéng）橡（xiàng）膠，被廣泛應用於（yú）抗（kàng）風化產品、粘膠鞋底、塗料和火箭燃料（liào）。

外觀（guān）為乳白色、米（mǐ）黃色或淺棕色的片狀或塊狀物，是氯丁二烯（即2-氯-1,3-丁（dīng）二烯）為主要原料進行α-聚合生成的彈性體。氯丁橡膠溶解度（dù）參數占δ=9.2～9.41。溶於甲苯、二甲（jiǎ）苯、二氯乙烷、三（sān）釩乙烯，微溶於丙酮、甲乙酮、醋酸乙酯、環己（jǐ）烷，不溶於正己烷、溶劑汽油，但可溶（róng）於由適當比例的良溶劑（jì）和（hé）不良溶劑及非（fēi）溶劑或不良溶劑和非（fēi）溶劑組成（chéng）的混合溶劑，在植物油和（hé）礦物油中（zhōng）溶脹而不溶解（jiě）。

有良好的物理機械性能，耐油，耐熱，耐燃，耐日光，耐臭氧（yǎng），耐酸堿，耐化學試（shì）劑（jì）。缺點是耐寒性和貯存穩定性較差。具有較（jiào）高的拉（lā）伸強度、伸長率和可逆（nì）的結晶性，粘接性好。耐老化、耐熱。耐油、耐化學腐蝕性優異。耐候性和耐臭氧老化僅次於乙丙橡膠和丁（dīng）基橡膠。耐（nài）熱性與丁腈橡膠相當，分解溫度230～260℃，短期可耐120～150℃，在80～100℃可長期使用，具有一定的阻燃性。耐油性僅（jǐn）次於丁腈橡膠。耐無機酸、堿腐蝕性良好。耐寒性稍差，電絕緣性不佳。生膠儲存穩定性差，會產生“自硫”現象，門尼黏度增大（dà），生膠變硬（yìng）。

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.

• 上一個：EPDM泡綿的特性（xìng）(Characteristics of EPDM foam)
• 下一個：沒有了！