CN109627647A - 一种高粘接性氟橡胶混炼胶及其制备方法 - Google Patents

一种高粘接性氟橡胶混炼胶及其制备方法 Download PDF

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CN109627647A
CN109627647A CN201910013999.6A CN201910013999A CN109627647A CN 109627647 A CN109627647 A CN 109627647A CN 201910013999 A CN201910013999 A CN 201910013999A CN 109627647 A CN109627647 A CN 109627647A
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张�林
袁马跳
杨刚
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Abstract

本发明公开了一种高粘接性氟橡胶混炼胶及其制备方法，其制备原料按照重量份包括氟橡胶生胶100份、双酚AF 1~3份、SC4母炼胶1~2份、填料15~35份、吸酸剂3~10份、色料0.5~5份，所述SC4母炼胶包含氟橡胶生胶65~70份、脂肪醇0.1~1.5份、溴化胺25~35份，其制备方法为：首先制备出SC4母炼胶，然后先对氟橡胶生胶进行塑炼，再加入双酚AF、SC4母炼胶、填料、吸酸剂、色料共同塑炼、薄通至混合充分出片。本发明方法简便、成品率高、利于工业推广，制备出的氟橡胶混炼胶分散性好，具有高粘接性，与骨料粘合效果明显优于现有产品。

Description

一种高粘接性氟橡胶混炼胶及其制备方法
技术领域
本发明涉及一种橡胶及其制备方法，具体涉及一种高粘接性氟橡胶混炼胶及其制备方法。
背景技术
氟橡胶由于氟原子的引入，赋予了橡胶优异的耐热性、抗氧化性、耐油性、耐腐蚀性和耐大气老化性，在航天、航空、汽车、石油和家用电器等领域得到了广泛应用，是国防尖端工业中无法替代的关键材料。
现有的氟橡胶在制备时，通常利用脱模剂来提高产品的脱模性能，使得其硫化后产生的胶料飞边容易清理。但是，脱模剂的使用能改善分散性却会降低胶料的粘接性能，如何使胶料的分散性和粘接性能同时改善，得到与骨料粘合效果好的胶料是当下的一个技术难点和热点。
发明内容
本发明的目的之一在于提供一种高粘接性氟橡胶混炼胶，其能克服现有技术的不足，其通过对氟橡胶混炼胶配方的改进，能同时改善其粘接性能和分散性，使其具有优良的分散性和粘接性。
为实现上述目的，本发明采用以下技术方案：
一种高粘接性氟橡胶混炼胶，其制备原料按照重量份数包含以下组分：氟橡胶生胶100份、双酚AF 1～3份、SC4母炼胶1～2份、填料15～35份、吸酸剂3～10份、色料0.5～5份，所述SC4母炼胶按照重量份数由以下组分制成：氟橡胶生胶65～70份、脂肪醇0.1～1.5份、溴化胺25～35份。
优选地，所述氟橡胶生胶为氟橡胶26、氟橡胶246中的一种或者两种的混合物。
优选地，所述吸酸剂为氧化镁、氢氧化钙中的一种或者两种的混合物。
优选地，所述填料为氟化钙、硫酸钡、炭黑中的一种或几种。
本发明的另一个目的还在于提供一种上述的高粘接性氟橡胶混炼胶的制备方法，该方法简便、成品率高、利于工业推广。
一种上述高粘接性氟橡胶混炼胶的制备方法，其包括以下步骤：
S1、按照重量份称取氟橡胶生胶65～70份、脂肪醇0.1～1.5份、溴化胺25～35份，首先将氟橡胶生胶投入密炼机中，塑炼180秒；然后将脂肪醇和溴化胺投入密炼机中，加压密炼60秒后扫粉一次，扫完粉后加压密炼100秒；最后将密炼机中得到的物料倒出在开炼机上薄通，返炼出片，得到SC4母炼胶；
S2、按照重量份称取氟橡胶生胶100份、双酚AF 1～3份、填料15～35份、吸酸剂3～10份、色料0.5～5份、步骤S1得到的SC4母炼胶1～2份，备好待用；
S3、将步骤S2中备好的氟橡胶生胶投入密炼机中，加压塑炼3～5分钟，
S4、将步骤S2中备好的双酚AF、填料、吸酸剂、色料、SC4母炼胶一起加入步骤S3中的密炼机中，继续塑炼，确保混合充分，得到胶料；
S5、用开炼机对步骤S4得到的胶料进行塑炼，薄通3次至混合充分后出片。
进一步地，步骤S4中，继续塑炼的时间为3～10分钟，塑炼温度不高于110℃。
采用上述技术方案后，本发明与背景技术相比，具有如下优点：
1、本发明提供的氟橡胶混炼胶分散性好，具有高粘接性，与骨料粘合效果明显优于现有产品。
2、本发明通过各组分之间的联合作用以及各步骤间的协同作用最终得到高粘接性的氟橡胶混炼胶，首先利用溴化铵、脂肪醇和氟橡胶生胶共同加压密炼，制备出SC4母炼胶，将溴化铵和脂肪醇很好的分散在母炼胶中，其摈弃了传统的硫化促进剂BPP和脱模剂，克服了BPP熔点高，难分散和脱模剂降低粘接性的缺陷，利用溴化铵、脂肪醇、吸酸剂、填料、双酚AF共同作用，能同时改善氟橡胶混炼胶的粘接性能和分散性，并提高整体强度。
3、本发明提供的制备方法简便易操作、成品率高、利于工业推广。
附图说明
图1为本发明氟橡胶混炼胶与对比例的粘合效果对比示例照片。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合实施例和附图，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。若无特别说明，本发明选用的原料均为市售所得。
实施例1～3、对比例1的氟橡胶混炼胶制备原料配方见表1，制得的氟橡胶混炼胶各项测试性能见表2。
实施例1～3的氟橡胶混炼胶的制备方法包含以下步骤：
S1、按照制备SC4母炼胶的配方称取氟橡胶生胶、脂肪醇、溴化胺，先将氟橡胶生胶投入密炼机中，塑炼180秒；然后将脂肪醇和溴化胺投入密炼机中，加压密炼60秒后扫粉一次，扫完粉后加压密炼100秒；最后将密炼机中得到的物料倒出在开炼机上薄通，返炼出片，得到SC4母炼胶；
S2、按照配方称取氟橡胶生胶、双酚AF(即2,2-双-(4-羟苯基)六氟丙烷)，填料、吸酸剂、色料、步骤S1得到的SC4母炼胶，备好待用；
S3、将步骤S2中备好的氟橡胶生胶投入密炼机中，加压塑炼3～5分钟，
S4、将步骤S2中备好的双酚AF、填料、吸酸剂、色料、SC4母炼胶一起加入步骤S3中的密炼机中，继续塑炼3～5分钟，塑炼温度不高于110℃，确保混合充分，得到胶料；
S5、用开炼机对步骤S4得到的胶料进行塑炼，薄通3次至混合充分后出片。
对比例1的氟橡胶混炼胶的制备方法为：首先按照配方称取氟橡胶生胶、双酚AF、硫化促进剂BPP(即苄基三苯基氯化磷)、吸酸剂、填料、色料，先将氟橡胶生胶在密炼机中，加压塑炼3～5分钟；然后加入双酚AF、硫化促进剂BPP、吸酸剂、填料、色料继续塑炼3～5分钟，塑炼温度不高于110℃，确保混合充分，得到胶料；最后用开炼机对所述胶料进行塑炼，薄通3次至混合充分后出片。
表1实施例1～3、对比例1的氟橡胶混炼胶制备原料配方
注：表1中各原料按重量份数计，其中所述的氧化镁为高活性氧化镁150,所述脂肪醇为PAT@-777，包括C18-OH 15％、C20-OH 15％、C22-OH70％，所述填料为氟化钙、硫酸钡、炭黑按照重量比1∶1∶1混合而成。
表2实施例1～3、对比例1制得的氟橡胶混炼胶各项测试性能
由表2测试数据可知，本发明实施例1～3相对于对比例1，分散性、强度、剥离强度更好，产品用同等条件下的钳子夹开，本发明与骨架的粘合效果更好(参考图1所示的粘合效果对比，图中左侧为对比例1，右侧为实施例1)。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (6)

1.一种高粘接性氟橡胶混炼胶，其特征在于：制备原料按照重量份数包含以下组分：氟橡胶生胶100份、双酚AF 1~3份、SC4母炼胶1~2份、填料15~35份、吸酸剂3~10份、色料0.5~5份，所述SC4母炼胶按照重量份数由以下组分制成：氟橡胶生胶65~70份、脂肪醇0.1~1.5份、溴化胺25~35份。
2.如权利要求1所述的一种高粘接性氟橡胶混炼胶，其特征在于：所述氟橡胶生胶为氟橡胶26、氟橡胶246中的一种或者两种的混合物。
3.如权利要求1所述的一种高粘接性氟橡胶混炼胶，其特征在于：所述吸酸剂为氧化镁、氢氧化钙中的一种或者两种的混合物。
4.如权利要求1所述的一种高粘接性氟橡胶混炼胶，其特征在于：所述填料为氟化钙、硫酸钡、炭黑中的一种或几种。
5.一种权利要求1~5任一项所述的一种高粘接性氟橡胶混炼胶的制备方法，其特征在于：包括以下步骤：
S1、按照重量份称取氟橡胶生胶65~70份、脂肪醇0.1~1.5份、溴化胺25~35份，首先将氟橡胶生胶投入密炼机中，塑炼180秒；然后将脂肪醇和溴化胺投入密炼机中，加压密炼60秒后扫粉一次，扫完粉后加压密炼100秒；最后将密炼机中得到的物料倒出在开炼机上薄通，返炼出片，得到SC4母炼胶；
S2、按照重量份称取氟橡胶生胶100份、双酚AF 1~3份、填料15~35份、吸酸剂3~10份、色料0.5~5份、步骤S1得到的SC4母炼胶1~2份，备好待用；
S3、将步骤S2中备好的氟橡胶生胶投入密炼机中，加压塑炼3~5分钟，
S4、将步骤S2中备好的双酚AF、填料、吸酸剂、色料、SC4母炼胶一起加入步骤S3中的密炼机中，继续塑炼，确保混合充分，得到胶料；
S5、用开炼机对步骤S4得到的胶料进行塑炼，薄通3次至混合充分后出片。
6.如权利要求5所述的一种高粘接性氟橡胶混炼胶的制备方法，其特征在于：步骤S4中，继续塑炼的时间为3~10分钟，塑炼温度不高于110℃。
CN201910013999.6A 2019-01-08 2019-01-08 一种高粘接性氟橡胶混炼胶及其制备方法 Pending CN109627647A (zh)

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Application publication date: 20190416