CN108912413A - 高弹性橡胶加工方法 - Google Patents
高弹性橡胶加工方法 Download PDFInfo
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
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Abstract
本发明提供了一种高弹性橡胶加工方法,将收集的材料混入稀硫酸中酸化处理,加入丙烯、促进剂和硫化剂,再冷却至室温,切边成型,切除的废边放入步骤2)中重复使用;最后对成型产品进行硫化处理,得到成品。本发明通过调节橡胶原料的比例以及新的促进剂的使用,大幅提高了橡胶制品的交联能力,弹性好,经济环保。
Description
技术领域
本发明涉及橡胶制备方法领域,具体是一种高弹性橡胶加工方法。
背景技术
橡胶是指具有可逆形变的高弹性聚合物材料,在室温下富有弹性,在很小的外力作用下能产生较大形变,除去外力后能恢复原状。橡胶属于完全无定型聚合物,它的玻璃化转变温度低,分子量往往很大,大于几十万。
早期的橡胶是取自橡胶树、橡胶草等植物的胶乳,加工后制成的具有弹性、绝缘性、不透水和空气的材料。高弹性的高分子化合物。分为天然橡胶与合成橡胶二种。天然橡胶是从橡胶树、橡胶草等植物中提取胶质后加工制成;合成橡胶则由各种单体经聚合反应而得。橡胶制品广泛应用于工业或生活各方面。
橡胶材料在常温下最突出的特点是其他材料所不具备的高弹性。高弹性是高聚物特有的、基于链段运动的一种力学状态,是其他基于键角、键长变化的普通弹性所无法比拟的。一般铜、钢等金属材料的形变量只有约1%,橡胶材料的高弹形变至少100%,最高则可达100%以上。
理想的高弹性完全是由卷曲的橡胶大分子构象变化造成的,去除外力后,能立即回复原状。然而,实际中橡胶分子间存在相互作用力和内旋转阻力,会妨碍分子链段的运动,表现为橡胶的粘性,作用于橡胶分子上的力一部分用于克服分子间的粘性阻力,另一部分使分子链变形。
发明内容
本发明为了解决现有技术的问题,提供了一种高弹性橡胶加工方法,通过调节橡胶原料的比例以及新的促进剂的使用,大幅提高了橡胶制品的交联能力,弹性好,经济环保。
本发明包括以下步骤:
1)按7:1:2的比例混合天然橡胶、丁苯橡胶和丁基橡胶;
2)加入质量分数为10—20%的稀硫酸,调节温度至 400—500放置1h;
3)进行硫化处理工艺,加入丙烯、促进剂和硫化剂,硫化温度为350-400℃,硫化时间为3-4h,其中丙烯质量为天然橡胶质量的0.5-1倍;
4)等待自然冷却至室温。
进一步改进,所述的促进剂为噻唑类或次磺酰胺类。
本发明有益效果在于:通过调节橡胶原料的比例以及新的促进剂的使用,大幅提高了橡胶制品的交联能力,弹性好,经济环保。
具体实施方式
下面对本发明作进一步说明。
本发明包括以下步骤:
1)按7:1:2的比例混合天然橡胶、丁苯橡胶和丁基橡胶;
2)加入质量分数为10—20%的稀硫酸,调节温度至 400—500放置1h;
3)进行硫化处理工艺,加入丙烯、促进剂和硫化剂,硫化温度为350-400℃,硫化时间为3-4h,其中丙烯质量为天然橡胶质量的0.5-1倍;
4)等待自然冷却至室温。
进一步改进,所述的促进剂为噻唑类或次磺酰胺类。
本发明具体应用途径很多,以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以作出若干改进,这些改进也应视为本发明的保护范围。
Claims (2)
1.一种高弹性橡胶加工方法,其特征在于包括以下步骤:
1)按7:1:2的比例混合天然橡胶、丁苯橡胶和丁基橡胶;
2)加入质量分数为10—20%的稀硫酸,调节温度至 400—500放置1h;
3)进行硫化处理工艺,加入丙烯、促进剂和硫化剂,硫化温度为350-400℃,硫化时间为3-4h,其中丙烯质量为天然橡胶质量的0.5-1倍;
4)等待自然冷却至室温。
2.根据权利要求1所述的高弹性橡胶加工方法,其特征在于:所述的促进剂为噻唑类或次磺酰胺类。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1039254A (zh) * | 1988-07-04 | 1990-01-31 | 中国科学院化学研究所 | 杜仲树胶型高弹性橡胶制品 |
CN101665590A (zh) * | 2008-09-03 | 2010-03-10 | 上海市长宁区少年科技指导站 | 一种高弹性橡胶 |
KR20130087182A (ko) * | 2012-01-27 | 2013-08-06 | 한국신발피혁연구원 | 기계적 강도와 영구압축변형률이 우수한 초분자 열가역성 가교형 탄성체 조성물 및 이를 이용한 탄성체의 제조방법 |
CN104744736A (zh) * | 2013-12-26 | 2015-07-01 | 青岛东昌源仪器有限公司 | 鞋底材料及其制作方法 |
CN104804357A (zh) * | 2014-01-24 | 2015-07-29 | 马宣伟 | Src橡胶新材料及制造工艺及耐扎、防爆轮胎 |
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2018
- 2018-04-17 CN CN201810344502.4A patent/CN108912413A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1039254A (zh) * | 1988-07-04 | 1990-01-31 | 中国科学院化学研究所 | 杜仲树胶型高弹性橡胶制品 |
CN101665590A (zh) * | 2008-09-03 | 2010-03-10 | 上海市长宁区少年科技指导站 | 一种高弹性橡胶 |
KR20130087182A (ko) * | 2012-01-27 | 2013-08-06 | 한국신발피혁연구원 | 기계적 강도와 영구압축변형률이 우수한 초분자 열가역성 가교형 탄성체 조성물 및 이를 이용한 탄성체의 제조방법 |
CN104744736A (zh) * | 2013-12-26 | 2015-07-01 | 青岛东昌源仪器有限公司 | 鞋底材料及其制作方法 |
CN104804357A (zh) * | 2014-01-24 | 2015-07-29 | 马宣伟 | Src橡胶新材料及制造工艺及耐扎、防爆轮胎 |
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