Rubber containing nano zinc oxide and its pugging process

A nano-zinc oxide and zinc oxide technology, which is applied in the field of rubber containing zinc oxide and its mixing, can solve the problems of unstable material properties, poor dispersion, uneven dispersion, etc.

Inactive Publication Date: 2002-12-25
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical results show that when the particle size of the material is too small, its dispersion effect is poor.
Therefore, using the mixing method of dispersing ordinary zinc oxide to process nano-zinc oxide will cause uneven dispersion and unstable material properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0019] Specific implementation methods Rubber mixing equipment: Open mill: XK-160 type φ160×320mm Shanghai Rubber Machinery Factory; Flat vulcanizer QLB-350mm×350mm×2 Shanghai No. 1 Rubber Machinery Factory Test standard: Rheology: GB 1683- 87. GB 686-85;

[0020] 300% tensile strength, tensile strength, elongation at break, tensile permanent deformation: GB

[0021] 528-83;

[0022] Hardness: GB 531-83.

Embodiment 1

[0024] Soak an appropriate amount of nano-zinc oxide with a particle size of 60-80nm in a 20wt% silane coupling agent aqueous solution (the above-mentioned silane coupling agent is a commercially available product, the same below) for 5 minutes, filter and dry at 100°C to constant weight;

[0025] 95 servings of 3 # Smoked sheet rubber and 5 parts of the above-mentioned treated nano-zinc oxide are placed in an open mill, and mixed at a temperature of 50 ° C to make a nano-zinc oxide masterbatch;

[0026] Rubber: 81 parts; Sulfur: 4 parts; Accelerator M: 0.5 parts; Accelerator DM: 1 part; Stearic acid: 0.8 parts; Nano zinc oxide masterbatch: 20 parts; Quality calcium carbonate: 60 parts. Put it in an open mill and knead at a temperature of 55°C (the traditional method is adopted for kneading, the same below), to obtain the rubber of the present invention.

[0027] According to GB 1683-87 and GB 686-85, the rheometer test was carried out, the heating temperature was 155°C, th...

Embodiment 2

[0030] Soak an appropriate amount of nano-zinc oxide with a particle size of 10-40nm in a silane coupling agent aqueous solution with a concentration of 5wt% for 10 minutes, filter and dry at 100°C to constant weight;

[0031] 90 servings of 3 # Smoked sheet rubber and 10 parts of the above-mentioned treated nano-zinc oxide are placed in an open mill, and mixed at a temperature of 50 ° C to make a nano-zinc oxide masterbatch;

[0032] Will 3 # Smoked sheet rubber: 82 parts; sulfur: 2.5 parts; accelerator M: 0.7 parts; accelerator DM: 0.8 parts; stearic acid: 1.5 parts; nano-zinc oxide masterbatch: 20 parts; anti-aging agent A: 1 part; Light calcium carbonate: 50 parts. Place it in an open mill and knead at a temperature of 55°C to obtain the rubber of the present invention.

[0033] According to GB 1683-87 and GB 686-85, the rheometer test was carried out, the heating temperature was 155°C, the results are as follows: T 10 = 2'6";T 90 = 4'24".

[0034] performan...

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Abstract

A rubber product contains rubber matrix, vulcanizing agent and (10-80)-nm zinc oxide as vulcanizing activator. Its milling process includes feeding said rubber matrix and the nano zinc oxide treated by silane coupling agent into open mill to obtain mother rubber, sequentially adding the rubber matrix, said mother rubber, promoter, antiageing agent and sulfur, and milling. Its advantages are less consumption of nano zinc oxide (decreased by 60%), and high mechanical performance of product.

Description

technical field [0001] The invention relates to a rubber containing zinc oxide and a mixing method thereof. Background technique [0002] Zinc oxide has been used as a vulcanization activator in rubber for a hundred years. As an activator, it can not only speed up the vulcanization rate but also increase the degree of vulcanization. Because zinc oxide has a large affinity for electrons and a strong adsorption effect on the surface of the accelerator, it is the most active metal oxide. At present, the particle size of zinc oxide used in industry is generally above 100nm. The traditional dosage of zinc oxide (100 parts of raw rubber) is 5 parts. In different countries and different products, this dosage was regarded as a classic in the past. , beyond doubt. Whenever the amount of zinc oxide is less than 5 parts, the mechanical properties will decrease. This is due to the large particle size and poor activity of ordinary zinc oxide. Now use nano zinc oxide with a particle s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/22C08L21/00
Inventor 陈月辉
Owner SHANGHAI UNIV OF ENG SCI
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