Modified rare earth sulfide assistant, preparation method thereof, and rubber production method

A rare earth sulfide and organic modifier technology, applied in the field of modified rare earth sulfide additives and their preparation, can solve the problems of fast vulcanization speed, reduced production efficiency, and poor hardness of vulcanizate, and achieves low cost, coke Prolonged burning time and good bonding performance

Active Publication Date: 2016-10-12
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

T90 is an important parameter for vulcanized rubber molding production. The appropriate T90 time vulcanized rubber vulcanizes quickly and has high hardness. Otherwise, the production efficiency will decrease and the hardness will deteriorate.

Method used

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  • Modified rare earth sulfide assistant, preparation method thereof, and rubber production method
  • Modified rare earth sulfide assistant, preparation method thereof, and rubber production method

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preparation example Construction

[0021] At first, the present invention provides a kind of preparation method of modified rare earth sulfide auxiliary agent, and it comprises the steps:

[0022] Step 1, adding an organic modifier to an organic solvent to obtain an organic modification solution; the organic modifier is a coupling agent or an organic carboxylic acid;

[0023] Step 2. Disperse the rare earth sulfide powder in the organic modification solution, heat, stir, filter and vacuum dry in a closed container to obtain the modified rare earth sulfide additive; the heating temperature is 50-80°C, The time is 1 to 4 hours.

[0024] In the above step 1, the organic solvent can be ethanol, methanol, ethyl acetate, dichloromethane, acetone, etc. Ethanol is preferably used in the present invention.

[0025] The coupling agent is preferably a silane coupling agent, titanate coupling agent or aluminate coupling agent. The organic carboxylic acid is preferably a saturated carboxylic acid or an unsaturated carbox...

Embodiment 1

[0037] Weigh 0.060g silane coupling agent and dissolve in 20mL ethanol, 2g D 50 Put 2.78 μm samarium sulfide into ethanol solution of silane coupling agent, seal the container, stir at 50°C for 2 hours, then filter and dry for 10 hours to obtain organic surface-modified samarium sulfide. On the basis of keeping the original formula and technological process of natural rubber unchanged, organically modified samarium sulfide was added to 200g of natural rubber, and mastication, mixing and vulcanization tests were carried out.

Embodiment 2

[0039] Weigh 0.200g aluminate coupling agent and dissolve in 20mL ethanol, 4g D 50 Put 0.96 μm cerium samarium mixed sulfide into ethanol solution of aluminate coupling agent, seal the container, stir at 60°C for 2 hours, then filter and dry for 12 hours to obtain organic surface modified cerium samarium sulfide. On the basis of keeping the original formula and technological process of natural rubber unchanged, organically modified cerium samarium sulfide was added to 200 g of natural rubber, and mastication, mixing and vulcanization tests were carried out.

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Abstract

The invention relates to the field of rubber production, and especially relates to a modified rare earth sulfide assistant, a preparation method thereof, and a rubber production method. The preparation method of the modified rare earth sulfide assistant comprises the following steps: 1, adding an organic modifier to an organic solvent to obtain an organic modification solution, wherein the organic modifier is a coupling agent or an organic carboxylic acid; and 2, dispersing rare earth sulfide powder in the organic modification solution, heating and stirring the obtained solution in a closed container at 50-80DEG C for 1-4h, filtering the obtained material, and carrying out vacuum drying to obtain the modified rare earth sulfide assistant. The modified rare earth sulfide assistant is organically modified rare earth sulfide, and has the advantages of good dispersion effect, low cost, good combination with rubber polymers, facilitation of displaying of the performances of rare earth materials, and rubber scorching period prolongation and vulcanization rate acceleration effects.

Description

technical field [0001] The invention relates to the field of rubber preparation, in particular to a modified rare earth sulfide additive, a preparation method thereof, and a rubber preparation method. Background technique [0002] Natural rubber (NR) is a natural polymer compound mainly composed of polyisoprene, 91-94% of which is rubber hydrocarbon (polyisoprene), and the rest are protein, fatty acid, ash, sugar Class and other non-rubber substances. Natural rubber is the most widely used general-purpose rubber. NR is an elastic material that is widely researched and applied by humans. It has excellent physical and chemical properties such as high resilience and good plasticity. After modification, natural rubber also has properties such as heat resistance, water resistance, insulation, and wear resistance. Very wide range of applications. [0003] Vulcanization is an important process in natural rubber processing. Vulcanization is divided into four stages: scorch stage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K9/04C08K3/30C08L7/00
CPCC08K3/30C08K9/04C08K9/06C08K2003/3009C08K2201/003C08L7/00
Inventor 李梅郝伟柳召刚胡艳宏王觅堂张晓伟郝鑫凯
Owner INNER MONGOLIA UNIV OF SCI & TECH
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