CN112898654B - 一种门尼粘度稳定且高强力的再生胶及其制备方法 - Google Patents

一种门尼粘度稳定且高强力的再生胶及其制备方法 Download PDF

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CN112898654B
CN112898654B CN201911224045.6A CN201911224045A CN112898654B CN 112898654 B CN112898654 B CN 112898654B CN 201911224045 A CN201911224045 A CN 201911224045A CN 112898654 B CN112898654 B CN 112898654B
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reclaimed rubber
mooney viscosity
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CN112898654A (zh
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王婷
陈宏�
张新军
姜云平
秦锴
于淼
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Beijing Research and Design Institute of Rubber Industry
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

本发明公开了一种门尼粘度稳定且高强力的再生胶及其制备方法。该再生胶由脱硫胶粉100份、硬脂酸锌0.1‑1份、六硫化双五亚甲基秋兰姆0.1‑1份、热塑性弹性体1‑15份和受阻酚抗氧剂0.5‑5份组成，通过将各原料在搅拌罐中混合均匀，并在开炼机上混炼，得到门尼粘度稳定且高强力的再生胶。该再生胶在储存期间门尼粘度稳定，加工性能较好，且具有较高的拉伸强度等力学性能。

Description

一种门尼粘度稳定且高强力的再生胶及其制备方法
技术领域
本发明属于再生胶生产技术领域，尤其涉及一种门尼粘度稳定且高强力的再生胶及其制备方法。
背景技术
再生胶是废橡胶再利用的主要途径，约占我国废橡胶市场利用总量的70％。理想的废橡胶脱硫是将硫化橡胶三维结构中的C-S或S-S键切断，而不破坏C-C主链，生成具有塑性的生橡胶，保持较好的加工性能和强力性能。然而，在实际的废橡胶脱硫过程中，由于机械力、化学作用等不能够精准控制，造成部分主链断裂，进而影响胶料力学性能。此外，在再生胶储存期间，切断后的C-S或S-S键生成活泼的自由基(C-，S-)，由于分子运动会逐渐碰撞再次交联，生成三维网状结构，使得门尼粘度逐渐升高，影响再生橡胶的加工性能。因此，控制再生胶储存期间门尼粘度反弹以及提高再生胶力学性能一直是再生胶行业研究的方向。
发明内容
本发明的目的是提供一种门尼粘度稳定且高强力的再生胶及其制备方法，有效解决再生胶在储存期间门尼粘度反弹的问题，并提高再生胶的力学性能等。
本发明的技术方案如下：
所述再生胶由以下原料组成：按质量份数分别为脱硫胶粉100份，硬脂酸锌0.1-1份，六硫化双五亚甲基秋兰姆(促进剂DPTT)0.1-1份，热塑性弹性体1-15份，受阻酚抗氧剂0.5-5份。
所属制备方法为将各原料在搅拌罐中混合均匀，搅拌5-15分钟，然后输送到辊温不高于120℃的开炼机上混炼8-20分钟，即得到门尼粘度稳定且高强力的再生胶。
所述热塑性弹性体为苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS树脂)。
所述受阻酚抗氧剂为1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸(抗氧剂3114)、2，6-二叔丁基对甲酚(抗氧剂264)、2，4，6-三叔丁基苯酚(抗氧剂246)中的一种或两种以上的混合。
在此技术方案中，促进剂DPTT不仅可以和硬脂酸锌共同作用，有效降低再生胶的门尼粘度，并抑制再生胶储存期间的门尼反弹，而且由于其本身有一定的有效硫含量，在加热时能够分解出游离硫，故用于再生胶能够提高再生胶的力学性能；受阻酚型抗氧剂，可以提供活泼氢，终止大分子自由基，能够降低再生胶的门尼粘度及控制门尼反弹，并受其结构作用提高胶料的耐热氧老化和光氧老化性能；热塑性弹性体能够提高再生胶的拉伸强度、拉断伸长率等力学性能。
本发明的有益效果为：所制备的再生胶门尼粘度稳定，在储存期间不反弹，具有较好的加工性能，并且拉伸强度和拉断伸长率性能优良。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。但不应将此理解为本发明上述主题的范围仅限于下述实施例。
对比例
将全钢载重轮胎全胎脱硫胶粉100份在搅拌罐中混合均匀，搅拌10分钟，然后输送到辊温不高于120℃的开炼机上混炼15分钟，得到再生胶。
实施例1
将全钢载重轮胎全胎脱硫胶粉100份，硬脂酸锌0.5份，促进剂DPTT 0.3份，SBS树脂3份，抗氧剂3114 3份在搅拌罐中混合均匀，搅拌10分钟，然后输送到在辊温不高于120℃的开炼机上混炼15分钟，即得到门尼粘度稳定且高强力的再生胶。
实施例2
将全钢载重轮胎全胎脱硫胶粉100份，硬脂酸锌0.5份，促进剂DPTT 0.5份，SBS树脂6份，抗氧剂3114 1份在搅拌罐中混合均匀，搅拌10分钟，然后输送到在辊温不高于120℃的开炼机上混炼15分钟，即得到门尼粘度稳定且高强力的再生胶。
实施例3
将全钢载重轮胎全胎脱硫胶粉100份，硬脂酸锌0.5份，促进剂DPTT 1份，SBS树脂6份，抗氧剂3114 3份在搅拌罐中混合均匀，搅拌10分钟，然后输送到在辊温不高于120℃的开炼机上混炼15分钟，即得到门尼粘度稳定且高强力的再生胶。
经检测各实施例再生胶的性能如下：
Figure BDA0002301642170000041

Claims (1)

1.一种门尼粘度稳定且高强力再生胶的制备方法，其特征在于：所述再生胶由以下原料组成：按质量份数分别为脱硫胶粉100份，硬脂酸锌0.1-1份，六硫化双五亚甲基秋兰姆0.1-1份，热塑性弹性体1-15份，受阻酚抗氧剂0.5-5份；所属制备方法为将各原料在搅拌罐中混合均匀，搅拌5-15分钟，然后输送到辊温不高于120℃的开炼机上混炼8-20分钟，即得到门尼粘度稳定且高强力的再生胶；所述热塑性弹性体为苯乙烯-丁二烯-苯乙烯嵌段共聚物；所述受阻酚抗氧剂为1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸、2，6-二叔丁基对甲酚、2，4，6-三叔丁基苯酚中的一种或两种以上的混合。
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US3267067A (en) * 1963-01-17 1966-08-16 Us Rubber Co Mercaptan stabilizers for control of decrease in plasticity of reclaimed rubber
JP2006274174A (ja) * 2005-03-30 2006-10-12 Yokohama Rubber Co Ltd:The 粘度安定化再生ゴム及びそれを含むゴム組成物

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US6590042B1 (en) * 2000-10-06 2003-07-08 Ying Tang Recycled rubber processing and performance enhancement
CN105754173B (zh) * 2016-03-13 2019-07-05 北京化工大学 一种低成本、高效率由脱硫胶粉直接制备混炼胶的方法
CN109776898A (zh) * 2018-12-28 2019-05-21 南京绿金人橡塑高科有限公司 一种门尼粘度稳定再生胶及其制备方法
CN109796625B (zh) * 2018-12-28 2021-11-16 南京绿金人橡塑高科有限公司 一种用于橡胶再生的环保再生剂及其制备方法

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Publication number Priority date Publication date Assignee Title
US2612479A (en) * 1950-08-23 1952-09-30 Us Rubber Co Reclaiming mixtures of vulcanized natural rubber and synthetic rubber scraps
US3267067A (en) * 1963-01-17 1966-08-16 Us Rubber Co Mercaptan stabilizers for control of decrease in plasticity of reclaimed rubber
JP2006274174A (ja) * 2005-03-30 2006-10-12 Yokohama Rubber Co Ltd:The 粘度安定化再生ゴム及びそれを含むゴム組成物

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