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Brominated butyl rubber-nylon thermoplastic elastomer with air tightness and preparation thereof

A technology of brominated butyl rubber and thermoplastic elastomer, which is applied in the field of polymer elastomer preparation, can solve the problems of difficult preparation, poor compatibility of brominated butyl rubber and nylon, and the compatibility effect of brominated butyl rubber and nylon Unsatisfactory and other problems, to achieve the effect of excellent processing performance

Inactive Publication Date: 2019-06-04
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, due to the good processability endowed by the nylon continuous phase, some scraps of TPV in the production process can also be reprocessed, and the processed TPV also has the ability to be replasticized and molded, which can effectively alleviate the current waste of tires. The problem of "black pollution" brought about, but the compatibility of brominated butyl rubber and nylon is relatively poor, making it difficult to prepare brominated butyl rubber nylon thermoplastic elastomer with excellent performance
[0004] Chinese patent CN 103788515 A discloses a thermoplastic vulcanizate with high gas barrier performance and its preparation method. The compatibilizer is polyisobutylene succinic anhydride or polypropylene grafted maleic anhydride, but these compatibilizers improve brominated butyl The compatibility effect of rubber and nylon is not ideal

Method used

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  • Brominated butyl rubber-nylon thermoplastic elastomer with air tightness and preparation thereof
  • Brominated butyl rubber-nylon thermoplastic elastomer with air tightness and preparation thereof
  • Brominated butyl rubber-nylon thermoplastic elastomer with air tightness and preparation thereof

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Experimental program
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Effect test

Embodiment 1

[0030] Masterbatch preparation:

[0031] Set the rotational speed of the torque rheometer to 50 rpm and the temperature to 50°C. At 0 min, add 50 g of BIIR raw rubber; at 1.5 min, add anti-aging additives such as RD 1 g and MB 1 g; at 3 min, add 5 g of plasticizer naphthenic oil; at 12 min, glue out to obtain masterbatch.

[0032] Preparation of Bromobutyl Nylon Thermoplastic Elastomer:

[0033] At 0 min, add the above-mentioned masterbatch and nylon 50g, compatibilizer low-melting point polypropylene grafted maleic anhydride 5g and antioxidant 1010 and antioxidant 168, a total of 0.2g, mix at 180°C for 3 minutes, add vulcanizing agent DCP 1g , and then dynamically vulcanized for 6 minutes, bromobutyl rubber nylon thermoplastic elastomer can be obtained.

[0034] The SEM pictures and optical pictures of the brominated butyl rubber nylon thermoplastic elastomer prepared in the present embodiment are respectively as follows figure 1 and figure 2 as shown, figure 1 It is th...

Embodiment 2

[0036] Masterbatch preparation method: set the rotational speed of the torque rheometer at 50 rpm and the temperature at 50°C. At 0 min, add 60 g of BIIR raw rubber; at 1.5 min, add anti-aging additives such as RD 1 g and MB 1 g; at 3 min, add 5 g of plasticizer naphthenic oil; at 12 min, glue out to obtain masterbatch.

[0037] Preparation of Bromobutyl Nylon Thermoplastic Elastomer

[0038] At 0 min, add the masterbatch prepared above and 40g of nylon, 5g of compatibilizer low-melting point polypropylene grafted maleic anhydride, 0.2g of antioxidant 1010 and antioxidant 168, mix at 180°C for 3 minutes, add Vulcanizing agent DCP 1g, and then dynamic vulcanization for 6 minutes, can obtain brominated butyl rubber nylon thermoplastic elastomer.

Embodiment 3

[0040]Masterbatch preparation method: set the rotational speed of the torque rheometer at 50 rpm and the temperature at 50°C. At 0 min, add 70 g of BIIR raw rubber; at 1.5 min, add RD 1 g, MB 1 g and other additives; at 3 min, add 5 g of plasticizer naphthenic oil; at 12 min, glue out to obtain masterbatch.

[0041] Preparation of Bromobutyl Nylon Thermoplastic Elastomer

[0042] At 0 min, add the above-mentioned masterbatch and nylon 30g, compatibilizer low-melting point polypropylene grafted maleic anhydride 5g, antioxidant 1010 and antioxidant 168, 0.2g in total, mix at 180°C for 3 minutes, add vulcanizing agent DCP 1g, and then dynamically vulcanized for 6 minutes to obtain brominated butyl rubber nylon thermoplastic elastomer.

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Abstract

The invention relates to a brominated butyl rubber-nylon thermoplastic elastomer with air tightness and preparation thereof. The formula of the brominated butyl rubber-nylon thermoplastic elastomer specifically comprises the following ingredients (by weight): 50-80 parts of brominated butyl rubber, 20-50 parts of nylon, 5-30 parts of a compatilizer, 5-20 parts of a plasticizer, 0.1-5 parts of an antioxidant, 1-5 parts of a vulcanizing agent, and 1-5 parts of an anti-ageing agent. In comparison with the prior art, the prepared brominated butyl rubber-nylon thermoplastic elastomer has excellentprocessability, air tightness and mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer elastomer preparation, and relates to a highly airtight brominated butyl rubber nylon thermoplastic elastomer and its preparation. Background technique [0002] With the development of society, automobile fuel saving and environmental protection are put on the agenda, tire gas barrier inner liner [32] The high air tightness and light weight of the rubber are the inevitable trend of future development, and the traditional halogenated butyl rubber or its compound rubber can no longer meet the market demand. Like bromobutyl rubber, nylon also has excellent gas barrier properties. The preparation of butyl nylon thermoplastic vulcanizate will have the comprehensive properties of both, which can not only greatly improve the air tightness of the material, but also allow it to be processed plastically. It solves the difficult problem of rubber recycling and has great application prospects. [0003] Spec...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08L77/00C08L51/06
Inventor 吴建张勇江阳向方雨肖伟李海
Owner SHANGHAI JIAO TONG UNIV
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