Ionic liquid modified carbon black-white carbon black double-phase particle filling natural rubber and preparation method thereof

A technology for modifying carbon black and white carbon black, which is applied in the field of rubber-like polymer composite materials, and can solve problems such as rising, mechanical properties not mentioned, tensile and tearing properties meeting the required requirements, etc.

Active Publication Date: 2013-09-04
NANJING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with the publication number CN 102336932 A discloses a kind of high temperature resistant conveyor belt rubber material obtained by filling the ionic liquid modified layered silicate into the rubber material. The formula is 80-100 parts of rubber, DCP 6-10 parts, 0.5-2 parts of DM, 0.5-1 parts of sulfur, 50-90 parts of carbon black, 1-10 parts of ionic liquid layered silicate, the obtained rubber can achieve high temperature resistance of 300-500 ° C, but Mechanical properties are not mentioned
The literature "Research on Preparation of Ionic Liquid Modified Silica / SBR Composite Materials by Emulsion Co-precipitation Method, Rubber Industry, 2011, 58(12): 715-720" reported that ionic liquid modified silica was filled into styrene-butadiene In rubber, the formula used is 100 parts of styrene-butadiene rubber, 40 parts of white carbon black, 5 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of anti-aging agent 4010NA, 1.5 parts of sulfur, 1 part of CZ, 1.5 parts of DM, modified After curing, the tensile strength of the rubber compound increased from 15.2MPa to 19MPa, an increase of 25%, and the tear strength increased from 41KN / m to 45KN / m, an increase of 9.7%. Although the mechanical properties have a certain increase, the range is not large. Tensile and tear properties are still not as desired

Method used

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  • Ionic liquid modified carbon black-white carbon black double-phase particle filling natural rubber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Attached figure 1 , Preparation of ionic liquid modified carbon black-white carbon black dual phase particles (CSDPF) filled natural rubber compound preparation includes the following steps:

[0032] Step 1: Modification of carbon black-silica dual-phase particles: Take 50 parts of carbon black-silica dual-phase particles CSDPF2125 in a beaker, add ethanol, and add ionic liquid (1-methylimidazole) mercapto amber After 0.5 part of acid salt, ultrasonically dispersed for 1h, after cooling, transfer it into a beaker, then use a microporous filter membrane to suction filter, and the filter cake is dried in a vacuum oven at 105°C;

[0033] Step 2: 100 parts of the raw rubber of Malaysia 1# smoked sheet rubber are masticated on two rollers for 15 minutes to obtain the masticated rubber;

[0034] Step 3: Add 1.4 parts of antioxidant RD, 1.4 parts of antioxidant 4010NA, modified carbon black-white carbon black dual phase granule CSDPF 2125 to the internal mixer in the plastified rubb...

Embodiment 2

[0039] The content of ionic liquid modified CSDPF 2125 in the formula of Example 2 is 40 parts, sulfur 2.5 parts, antioxidant RD 1.2 parts, antioxidant 4010NA 1.2 parts, and coumarone resin 4 parts. Other implementation processes are the same as in Example 1. The tensile strength of the obtained vulcanizate was 31.29MPa, the elongation at break was 593%, the tear strength was 122.2KN / m, and the AKRON abrasion volume was 0.210cm 3 , Thermal oxygen aging coefficient 94%, 340,000 times of tensile fatigue fracture; tanδ (70℃) is 0.118, tan δ (0℃) is 0.113.

Embodiment 3

[0041] The formula of Example 3 contains 3 parts of sulfur, 1 part of antioxidant RD, 1 part of antioxidant 4010NA, and 3 parts of coumarone resin. The other implementation process is the same as that of Example 2. The tensile strength of the obtained vulcanizate is 30.22MPa, and it is broken. The elongation is 613%, the tear strength is 115.2 KN / m, and the AKRON abrasion volume is 0.20cm 3 , The thermal oxygen aging coefficient is 92%, the number of tensile fatigue fracture is 380,000 times; tanδ (70℃) is 0.120, tan δ (0℃) is 0.117.

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Abstract

The invention relates to ionic liquid modified carbon black-white carbon black double-phase particle filling natural rubber and a preparation method thereof. The rubber comprises the following constituents: natural rubber, vulcanizing agent, ionic liquid, carbon black-white carbon black double-phase particles, zinc oxide, stearic acid, vulcanization accelerator, anti-aging agent and resin. The rubber has excellent stretch resistance and tear resistance performances, good fatigue resistance performance, good abrasive resistance, and good thermo-oxidative aging resistance performance, is low in dissipated heat, can prolong the service life of products during the use, can be applied to various rubber products, and particularly applied to tire tread rubber with high mechanical property requirements and good dynamic mechanical properties.

Description

Technical field [0001] The invention belongs to the technical field of rubber polymer composite materials, in particular to a modified filler filled natural rubber (NR) vulcanizate and a preparation method thereof. Background technique [0002] Carbon black-silica dual-phase particles are fillers for rubber containing carbon black and white carbon black (USP 6,709,506). The chemical modification method is adopted to add organic silicon compounds during the carbon black formation process. The carbon black crystallites are embedded with organic silicon atoms. These white carbon blacks not only interfere with the growth of carbon black crystallites, but also increase the defects of the crystallites, thereby changing the surface chemistry of the particles and improving the surface activity of the carbon black. The strength and modulus of pure rubber are very low, and it has practical use value after reinforcement. Traditional reinforcing fillers include carbon black and silica (whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/06C08K9/04C08K3/04C08K3/36
Inventor 贾红兵熊昕王经逸代秀费翔熊晓刚汤颖颖许金楼武涛张佳佳
Owner NANJING UNIV OF SCI & TECH
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