Environment-friendly anti-scorching agent and preparation method thereof

An anti-scorch agent and an environmentally friendly technology, which is applied in the field of rubber additives, can solve problems such as complex equipment, and achieve the effects of increasing modulus stress, reducing vulcanization time, and reducing permanent compression deformation

Inactive Publication Date: 2014-06-04
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scorching can be solved by adjusting the vulcanization system, but be careful to cause changes in the properties of the rubber; cooling can be used to improve the storage or processing conditions of the rubber, but complex equipment is required

Method used

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  • Environment-friendly anti-scorching agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of environment-friendly anti-scorch agent comprises the following steps successively:

[0016] 1) Raw materials are prepared according to the ratio of parts by weight; 85 parts of N-cyclohexylthiophthalimide, 30 parts of calcium carbonate, and 10 parts of white oil;

[0017] 2) Fully mix 85 parts of N-cyclohexylthiophthalimide and 10 parts of white oil to obtain the first mixture;

[0018] 3) Put the first mixture and 30 parts of calcium carbonate into an internal mixer, and knead for 10 minutes at a temperature of 80°C and a speed of 60r / min; to obtain a rubber compound;

[0019] 4) Put the compound mixed in the step 3) into an extruder to extrude and granulate to obtain the environment-friendly anti-scorch agent of the present invention.

Embodiment 2

[0021] The preparation method of environment-friendly anti-scorch agent comprises the following steps successively:

[0022] 1) Raw materials are prepared according to the ratio of parts by weight; 85 parts of N-cyclohexylthiophthalimide, 30 parts of calcium carbonate, and 10 parts of naphthenic oil;

[0023] 2) Fully mix 85 parts of N-cyclohexylthiophthalimide and 10 parts of naphthenic oil to obtain the first mixture;

[0024] 3) Put the first mixture and 30 parts of calcium carbonate into an internal mixer, and knead for 10 minutes at a temperature of 80°C and a speed of 60r / min; to obtain a rubber compound;

[0025] 4) Put the compound mixed in the step 3) into an extruder to extrude and granulate to obtain the environment-friendly anti-scorch agent of the present invention.

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Abstract

The invention discloses an environment-friendly anti-scorching agent. The environment-friendly anti-scorching agent is characterized by comprising the following components in parts by weight: 30-95 parts of benzene sulfonamide derivatives, 5-30 parts of calcium carbonate, and 1-10 parts of white oil or naphthenic oil. On the other hand, the invention discloses a preparation method for the environment-friendly anti-scorching agent. The prepared anti-scorching agent is excellent anti-scorching agent for natural rubber and synthetic rubber, and is especially applicable to EPDM (Ethylene-Propylene-Diene Monomer), NBR (Nitrile Butadiene Rubber) and HNBR (hydrogenated Nitrile Butadiene Rubber), the scorching time is obviously prolonged, and the curing speed is not influenced. The environment-friendly anti-scorching agent is especially applicable to a thiuram curing system, and can be used as a second promoter, the curing time can be shortened and the production efficiency can be improved. The environment-friendly anti-scoring agent is pollution-free and non-discoloring, thus being used for light-color products. The curing crosslinking density of EPDM and NBR rubber can be improved, the stress at definite elongation can be improved, and the permanent compression deformation can be reduced. Harmful substances cannot be generated in the curing process.

Description

technical field [0001] The invention relates to a rubber additive, in particular to an environment-friendly anti-scorch agent and a preparation method thereof. Background technique [0002] During storage and processing, the rubber will undergo early vulcanization (crosslinking) and lose its fluidity and ability to be reprocessed due to heat, which is the scorch phenomenon. Scorching of rubber compound is one of the common problems in rubber processing. Especially in the high-temperature, fast and efficient processing technology with modern characteristics and the use of compounding agents that are prone to scorch (such as reinforcing resins, methane white system binders, fine particle carbon black, etc.), scorch problems are more likely to occur . Scorching can be solved by adjusting the vulcanization system, but be careful to cause changes in the properties of the rubber; cooling can be used to improve the storage or processing conditions of the rubber, but complex equip...

Claims

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Application Information

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IPC IPC(8): C08K5/43C08K3/26C08L7/00C08L23/16C08L9/02C08L15/00
Inventor连千荣
OwnerNINGBO ACTMIX POLYMER