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Inner tube rubber material with high performance on resisting cracks in break angles

A folding-resistant and inner tube technology, applied in the rubber field, can solve the problems of cracking at the corners, affecting the air retention and service life of the inner tube, and achieve the effect of improving air retention, excellent air retention performance, and weather resistance.

Inactive Publication Date: 2020-04-24
KENDA RUBBER CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the inner tube is stored, it generally needs to suck up the air and fold it. When it is placed for a long time, the corners will be cracked due to high stress, which will affect the air retention and service life of the inner tube.

Method used

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  • Inner tube rubber material with high performance on resisting cracks in break angles
  • Inner tube rubber material with high performance on resisting cracks in break angles
  • Inner tube rubber material with high performance on resisting cracks in break angles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of inner tube rubber compound with high resistance to knuckle cracking. The raw material components are: 80 parts of butyl rubber, 15 parts of EPDM rubber, 10 parts of butyl reclaimed rubber, 30 parts of quick-press furnace black, and 35 parts of general-purpose furnace black , 5 parts of white ointment, 7 parts of 168 carbon black, 1 part of microcrystalline wax, 0.3 parts of chemical antioxidant AFS / LG, 5.9 parts of active agent (5 parts of ZnO, 0.9 part of SA), 0.5 part of processing aid D-S (ie N-(2-hydroxyethyl)stearamide, CAS: 111-57-9), 5.4 parts of tackifier 1102, 21 parts of processing oil P-150, 1.8 parts of vulcanizing agent S-325, 2 parts of accelerator ( 0.5 parts of M, 1.5 parts of TMTD).

[0030] Preparation process: (this process is carried out in a 255L internal mixer)

[0031] Step 1: Put in raw materials such as butyl rubber, butyl reclaimed rubber, EPDM rubber, carbon black, old anti-corrosion agent, active agent, white ointment, processing o...

Embodiment 2

[0039] A kind of inner tube rubber compound with high resistance to knuckle cracking. The raw material components are: 77 parts of butyl rubber, 17 parts of EPDM rubber, 12 parts of butyl reclaimed rubber, 25 parts of quick-press furnace black, and 40 parts of general-purpose furnace black , 5 parts of white ointment, 8 parts of 168 carbon black, 1.5 parts of microcrystalline wax, 0.3 parts of chemical antioxidant AFS / LG, 5.4 parts of active agent (4.5 parts of ZnO, 0.9 parts of SA), 0.5 parts of processing aid D-S, 8.0 parts Parts of tackifier 1102, 18 parts of processing oil P-150, 1.8 parts of vulcanizing agent S-325, 2 parts of accelerator (0.5 parts of M, 1.5 parts of TMTD).

[0040] Preparation process: (this process is carried out in a 255L internal mixer)

[0041] Step 1: Put in raw materials such as butyl rubber, butyl reclaimed rubber, EPDM rubber, carbon black, anti-corrosion agent, active agent, white ointment, processing oil and other raw materials and mix for 230...

Embodiment 3

[0049] A kind of inner tube rubber compound with high resistance to knuckle cracking. The raw material components are: 83 parts of butyl rubber, 12 parts of EPDM rubber, 10 parts of butyl reclaimed rubber, 35 parts of quick-press furnace black, and 30 parts of general-purpose furnace black , 5 parts of white ointment, 9 parts of 168 carbon black, 1.5 parts of microcrystalline wax, 0.2 parts of chemical antioxidant AFS / LG, 5 parts of active agent (4 parts of ZnO, 1 part of SA), 1.0 part of processing aid D-S, 4 parts Parts of tackifier 1102, 22 parts of processing oil P-150, 1.8 parts of vulcanizing agent S-325, 2 parts of accelerator (0.5 parts of M, 1.5 parts of TMTD).

[0050] The preparation process is the same as before.

[0051] The technical indicators of the products prepared by the embodiments are shown in the table below.

[0052]

[0053]

[0054] Note: The description of crack judgment is as follows

[0055]

[0056] From the above main technical indicato...

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PUM

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Abstract

The invention provides an inner tube rubber material with a high performance on resisting cracks in break angles. The rubber material comprises butyl rubber, ethylene propylene diene monomer, butyl reclaimed rubber, fast extrusion furnace black, general furnace black, white factice, 168 carbon black, microcrystalline wax, a chemical anti-aging agent AFS / LG, an active agent ZnO, an active agent SA,a processing aid D-S, tackifying resin 1102, processing oil P-150, a vulcanizing agent S-325, a promoter M, and an accelerant TMTD. A proper proportion of butyl rubber, butyl reclaimed rubber and ethylene propylene diene monomer is selected; and the white factice, the AFS / LG and the carbon black with proper specifications and proportions are added, so that excellent folding resistance and gas-retaining property are obtained, the resilience of the rubber material is remarkably improved, the ozone resistance, the weather resistance and the thermal aging resistance of the rubber material are improved, and the service life of the inner tube is prolonged.

Description

technical field [0001] The invention relates to the field of rubber, in particular to an inner tire rubber material with high resistance to crease angle cracking. Background technique [0002] For inner tubes, air retention is its main performance. However, when the inner tube is stored, it generally needs to suck up the air and fold it. When it is placed for a long time, the corners will be cracked due to the greater stress, which will affect the air retention and service life of the inner tube. Contents of the invention [0003] In view of the above problems, the present invention provides an inner tube rubber compound with high resistance to knuckle cracking, which has excellent knuckle crack resistance, excellent air retention, resilience, and good ozone resistance and heat aging resistance. [0004] In order to achieve the above object, the technical solution provided by the present invention is: a kind of inner tire rubber material with high resistance to knuckle cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/22C08L23/16C08L91/00C08L1/04C08K13/02C08K3/04C08K5/20
CPCC08L23/22C08L2205/025C08L2205/035C08L2201/08C08K2201/014C08K2003/2296C08L23/16C08L91/00C08L1/04C08K13/02C08K3/04C08K5/20C08K3/22
Inventor 贾满厅王其征焦前东杨启仁
Owner KENDA RUBBER CHINA
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