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Pre-dispersing rubber accelerator master batch and preparation method thereof

A rubber accelerator and pre-dispersion technology, which is applied in the field of rubber pre-dispersion accelerator masterbatch and its preparation, can solve problems such as bad odor, unfavorable industrial hygiene and environmental protection, and poor compatibility between chemicals and rubber

Active Publication Date: 2012-12-12
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional rubber additives are mostly powdery chemicals, although they can bring great benefits to rubber products and their processing, but there are also many disadvantages, such as producing a lot of dust, bad smell, toxic volatiles, etc. Extremely detrimental to industrial hygiene and environmental protection
In addition, some chemicals have poor compatibility with rubber, and it is difficult to disperse evenly in rubber, which often leads to quality problems of rubber products.

Method used

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  • Pre-dispersing rubber accelerator master batch and preparation method thereof
  • Pre-dispersing rubber accelerator master batch and preparation method thereof
  • Pre-dispersing rubber accelerator master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Accurately weigh 70g of styrene thermoplastic elastomer SBS and 30g of EVA rubber. Preheat the rollers of the mill and adjust to a temperature of 80°C. According to the amount of rubber mixing, adjust the roller distance to the specified size, adjust and fix the position of the rubber baffle; put the SBS powder into the roller gap of the open mill along one side of the roller, add EVA, and add 50g of naphthene in batches Base rubber oil and 600g accelerator TMTD, use methods such as tamping, rolling, and triangular bagging to make the rubber evenly and continuously wrapped on the front roller, leaving an appropriate amount of accumulated glue on the top of the roller distance, after 2-3 minutes of rolling, Turn over to form a smooth and gap-free roll wrapping rubber, press the rubber material to the required thickness, weigh the quality of the next piece and place it on a flat, dry rubber storage board. Turn on the single-screw extruder, set the temperature of each hea...

Embodiment 2

[0022] Accurately weigh 24.0g of SBS, 12.0g of EPDM, 12.0g of naphthenic rubber oil and 144.0g of accelerator TBTD, turn on the HAKKE rheometer, adjust the temperature to 75°C, and the speed to 40r / min, first add SBS and EPDM, and add them in batches Accelerator TBTD and naphthenic rubber process oil were pre-mixed in the HAKKE rheometer for 10 minutes, and the Hakke was opened to take out the material to obtain a pre-dispersed rubber additive masterbatch. Turn on the single-screw extruder, set the temperature of each heating zone of the screw as follows: zone 1 80-90°C, zone 2 85-90°C, zone 3 85-90°C, zone 4 85-90°C, speed 40r / min , adding the pre-dispersed rubber accelerator masterbatch, extruding and granulating to obtain the pre-dispersed rubber accelerator TBTD masterbatch with an accelerator content of 75%.

Embodiment 3

[0024] Accurately weigh 90.0g SEBS, 30.0g CR, 30.0g aromatic rubber oil, and 350.0g CZ accelerator. Preheat the mill rolls to a temperature of 85°C. Put the SBS mixed powder and CR into the roll gap of the open mill along one side of the roller, add the accelerator CZ and aromatic rubber oil in batches, and use methods such as pounding, rolling, and triangular bagging to form smooth and gap-free Roller rubber; press the rubber material to the required thickness, weigh the quality of the next piece and place it on a flat, dry rubber storage board. Turn on the single-screw extruder, the first zone is 80-90°C, the second zone is 85-90°C, the third zone is 85-90°C, the fourth zone is 85-90°C, the speed is 50r / min, add the pre-dispersed rubber additive masterbatch , extruded and granulated to obtain a pre-dispersed rubber accelerator CZ masterbatch with an accelerator content of 70%.

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Abstract

The invention provides pre-dispersing rubber accelerator master batch and a preparation method thereof in order to overcome the defects in the prior art. The pre-dispersing rubber accelerator master batch is characterized in that styrene thermoplastic polymer is adopted as main binder, rubber is used as modifier, and pre-dispersing rubber accelerator master batch comprises, by weight, 10-90% of accelerant, 10-90% of main binder, 0-30% of modifier, preferably 60-90% of accelerator, 10-30% of main binder, 0-20% of modifier and 0-20% of processing oil. The preparation method includes: at the processing temperature of 60-120 DEG C, mixing the accelerator with the main binder and the modifier, adding auxiliaries such as processing oil, and mixing on an open mill or an internal mixer to obtain the pre-dispersing rubber accelerator master batch; and then extruding granules on a single-screw or double-screw extruder to obtain the pre-dispersing rubber accelerator master batch. The pre-dispersing rubber accelerator master batch is good in vulcanization performance and processability and capable of achieving continuous operation and reducing production cost.

Description

technical field [0001] The invention relates to a rubber predispersed accelerator masterbatch and a preparation method thereof, in particular to a predispersed rubber auxiliary agent containing an accelerator and a preparation method thereof. Background technique [0002] Traditional rubber additives are mostly powdery chemicals, although they can bring great benefits to rubber products and their processing, but there are also many disadvantages, such as producing a lot of dust, bad smell, toxic volatiles, etc. It is extremely unfavorable for industrial hygiene and environmental protection. In addition, some chemicals have poor compatibility with rubber, and it is difficult to disperse evenly in rubber, which often leads to quality problems of rubber products. [0003] Rubber pre-dispersion additives are pre-dispersed powdery chemical additives in a certain bonding system by special means, and then granulated to make "high concentration" additive masterbatches, which are us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L7/00C08L9/00C08L23/22C08L23/16C08L23/08C08L31/04C08L11/00C08L9/02C08L33/00C08L23/28C08K5/31C08K5/47C08K5/40C08J3/22
Inventor 吴宁晶郎书国
Owner QINGDAO UNIV OF SCI & TECH
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