Tear-resistant mixed master batch suitable for mixing by twin-screw extruder

A twin-screw extruder, anti-tearing technology, applied in the field of twin-screw extruder mixing and mixing master batches, can solve the problems of unresolved, dust pollution, uneven dispersion, etc., and achieve excellent tear resistance, high Liquidity, the effect of increased liquidity

Pending Publication Date: 2021-11-09
王若愚 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN106188819A discloses a rubber accelerator ETU pre-dispersed masterbatch and its preparation method. In parts by weight, the masterbatch consists of: 72-82 parts of N,N-ethylenethiourea, 8 parts of rubber carrier ~16 parts, EVA resin 2~4 parts, epoxyacetyl ricinoleic acid methyl ester 1~3 parts, saturated fatty acid zinc 2~4 parts, naphthenic oil 1~8 parts, color masterbatch 1~3 parts, the present The state-of-the-art rubber accelerator ETU pre-dispersed masterbatch is convenient for storage, transportation and weighing. Its preparation method is simple and operable, which can ensure the original activity of ETU and solve the problem of mixing ETU directly into rubber. The problem of agglomeration and uneven dispersion can also solve the problem of ETU dust pollution and avoid the health problems of operators caused by inhalation of ETU dust, but it does not solve the problem

Method used

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  • Tear-resistant mixed master batch suitable for mixing by twin-screw extruder
  • Tear-resistant mixed master batch suitable for mixing by twin-screw extruder
  • Tear-resistant mixed master batch suitable for mixing by twin-screw extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A masterbatch contains the following ingredients (unit, part):

[0041]

[0042]

[0043] After the above components are uniformly mixed with an internal mixer, the masterbatch A is obtained after granulation with a single-screw extruder.

[0044] B masterbatch contains the following ingredients (unit, part):

[0045] EVA, 40%VA 100 sulfur 20

[0046] After the above components are uniformly mixed with an internal mixer, the masterbatch B is obtained after granulation with a single-screw extruder.

[0047] Mix masterbatch A and masterbatch B at a ratio of 5:1 to obtain a mixed masterbatch.

[0048] Mix the mixed masterbatch in a twin-screw extruder, the temperature of the extruder is 80°C, and the rotation speed is 60rpm to obtain a mixed rubber, which is used to evaluate the uniformity according to the uniformity evaluation method.

[0049] Put the mixed rubber into a standard sample mold, vulcanize at 160°C for 30 minutes to obtain a test ...

Embodiment 2

[0099] A masterbatch contains the following ingredients (unit, part):

[0100] EVA, 26%VA 100 SBR 600 Zinc stearate 80 Accelerator CZ 12 SEBS 100

[0101] After the above components are uniformly mixed with an internal mixer, the masterbatch A is obtained after granulation with a single-screw extruder.

[0102] B masterbatch contains the following ingredients (unit, part):

[0103] EVA, 35%VA 100 sulfur 30

[0104] After the above components are uniformly mixed with an internal mixer, the masterbatch B is obtained after granulation with a single-screw extruder.

[0105] Mix masterbatch A and masterbatch B at a ratio of 5:1 to obtain a mixed masterbatch.

[0106] Mix the mixed masterbatch in a twin-screw extruder, the temperature of the extruder is 80°C, and the rotation speed is 60rpm to obtain a mixed rubber, which is used to evaluate the uniformity according to the uniformity evaluation method.

[0107] Put the ...

Embodiment 3

[0109] A masterbatch contains the following ingredients (unit, part):

[0110]

[0111]

[0112] After the above components are uniformly mixed with an internal mixer, the masterbatch A is obtained after granulation with a single-screw extruder.

[0113] B masterbatch contains the following ingredients (unit, part):

[0114] EVA, 40%VA 100 sulfur 30 Antiaging agent 4010NA 25

[0115] After the above components are uniformly mixed with an internal mixer, the masterbatch B is obtained after granulation with a single-screw extruder.

[0116] Mix masterbatch A and masterbatch B at a ratio of 5:1 to obtain a mixed masterbatch.

[0117] Mix the mixed masterbatch in a twin-screw extruder, the temperature of the extruder is 80°C, and the rotation speed is 60rpm to obtain a mixed rubber, which is used to evaluate the uniformity according to the uniformity evaluation method.

[0118] Put the mixed rubber into a standard sample mold, vulcanize at 180°C ...

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Abstract

The invention provides a tear-resistant mixed master batch suitable for mixing by a twin-screw extruder, the tear-resistant mixed master batch comprises a master batch A and a master batch B. The master batch A comprises the following components: EVA, a rubber component, a vulcanizing activator and an accelerant, but does not contain sulfur; and the master batch B comprises the following components: EVA (Ethylene Vinyl Acetate) and sulfur, but does not contain a rubber component. The mixed master batch provided by the invention has the characteristics of being suitable for mixing of a double-screw extruder, high in tear strength, easy to store for a long time, uniform in dispersion and the like.

Description

technical field [0001] The invention relates to the field of rubber pre-dispersed master batches, in particular to tear-resistant suitable twin-screw extruder mixing master batches. Background technique [0002] CN110722703A relates to a low-temperature continuous mixing production method of rubber. According to the principle of low-temperature mixing, continuous mixing produces rubber with excellent physical and mechanical properties. According to the principle of low-temperature mixing of rubber, it includes low-temperature master batching, feeding, and low-temperature final mixing. And the rubber mixing method of the filtration step, the raw rubber is put into the internal mixer for master mixing, then the extruder is used for cooling and continuous tableting, and then the low temperature supplementary mixing is carried out in the mixer, and finally the rubber filter is used to Filtration and molding to achieve high-quality, high-efficiency rubber compound production; hig...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L9/00C08L7/00C08L9/06C08L53/02C08L71/02C08K7/26C08K5/14C08K5/098C08K3/06C08K3/26C08J3/22
CPCC08J3/226C08J2423/08C08J2409/00C08J2407/00C08J2409/06C08J2453/02C08J2471/02C08K7/26C08K5/14C08K5/098C08K3/06C08K3/26
Inventor 王若愚
Owner 王若愚
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