Reinforcing layer rubber as well as preparation method and application thereof
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A reinforcement layer and rubber technology, applied in the reinforcement layer of pneumatic tires, vehicle parts, tire parts, etc., can solve problems such as poor batch stability, achieve high batch stability, prevent molecular chain breakage, and heat generation. small effect
Inactive Publication Date: 2021-01-29
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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[0005] The present invention aims to solve the problem of poor batch stability of the reinforcement layer using natural rubber as raw material in the prior art, and further improve the dynamic heat generation resistance, adhesive strength, mechanical properties and processing performance of the reinforcement layer, and provides a Reinforcing layer rubber and its preparation method and application
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preparation example Construction
[0038] The preparation method of reinforcing layer rubber of the present invention, step is as follows:
[0039] Step 1, taking each component by proportioning;
[0040] Step 2: first put cis-1,4-polyisoprene rubber into the internal mixer for internal mixing, then add zinc oxide, stearic acid, anti-aging agent, resorcinol-80 and phenolic reinforcing resin for internal mixing, Then add carbon black, precipitated white carbon black and coupling agent Si-69 for banburying, and finally add operating oil for banburying, after banburying evenly, discharge the rubber and discharge the film to obtain the banburying film;
[0041] Step 3. Put the banbury film obtained in Step 2 on the open mill and add insoluble sulfur, accelerant, resin curing agent, anti-scorch agent CTP and anti-reversion agent during the open mill. The mixed film is obtained, that is, the reinforcing layer rubber.
[0042] In the above technical scheme, the initial temperature of the internal mixer is lower than...
Embodiment 1～4
[0049] The formulations of the reinforcing layer rubbers in Examples 1-4 are shown in Table 1. Prepare as follows:
[0050] Step 1, taking each component by proportioning;
[0051] Step 2: first put cis-1,4-polyisoprene rubber into the internal mixer for internal mixing, then add zinc oxide, stearic acid, anti-aging agent, resorcinol-80 and phenolic reinforcing resin for internal mixing, Then add carbon black and precipitated white carbon black for banburying, and finally add operating oil for banburying. After banburying evenly, the rubber is discharged to get the banburying film; the initial temperature of the internal mixer is lower than 70°C, and the degumming temperature does not exceed 155°C, banburying time is 4-10min;
[0052] Step 3: Put the banbury film obtained in Step 2 on the open mill with a roll temperature of 40-80°C, and add insoluble sulfur, accelerator, resin curing agent, coupling agent Si-69, and anti-scorch agent CTP during the milling process and anti...
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Abstract
The invention discloses a reinforcing layer rubber as well as a preparation method and application thereof and belongs to the technical field of rubber. The problem that in the prior art, the batch stability of reinforcing layer rubber with natural rubber as a raw material is poor is solved. The reinforcing layer rubber comprises the following components in parts by weight: 100 parts of cis-1, 4-polyisoprene rubber, 4-7 parts of zinc oxide, 1-2.5 parts of stearic acid, 1.5-2.5 parts of an anti-aging agent, 1-2 parts of resorcinol-80, 2-5 parts of phenolic reinforcing resin, 1-5 parts of a resin curing agent, 0-5 parts of operating oil, 40-50 parts of carbon black, 5-10 parts ofprecipitated white carbon black , 0.5-1 part of coupling agent Si-69, 0.2-0.5 part of scorch retarder CTP, 0.5-2 parts of an anti-reversion agent, 0.6-1.5 parts of a promoter, and insoluble sulphur (1.8-2.8 parts of sulphur) . The rubber has the advantages of dynamic heat generation resistance, higher stability,higher mechanical properties, favorable processability and high interface bonding property.
Description
technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a reinforcing layer rubber and its preparation method and application, in particular to the application of the reinforcing layer rubber as a bias tire reinforcing layer rubber. Background technique [0002] The reinforcing layer is between the tread and the carcass and is an important part of the tire. Its functions include the following aspects: 1) Reinforce the carcass and improve the bearing capacity of the tire; 2) Bear the external force on the tread 3) Prevent the carcass from being directly punctured and cause the tire to fail when the tread is cracked or cut; 4) Between the tread and the carcass 5) The reinforcing layer can also be used to determine the degree of tread wear. When the reinforcing layer reaches the state of leakage during the normal use of the tire, it means The tread has been completely worn away and the tire needs to be retreaded or scrapped. ...
Claims
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