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Modified coal asphalt product and preparation method thereof

A coal tar pitch modification technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor temperature stability, poor plasticity of coal tar pitch, irritating smell, etc., and achieve small footprint, save time, The effect of less investment in equipment

Active Publication Date: 2014-04-02
ANHUI AODE MINING MACHINERY & EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been proved that coal tar pitch has poor plasticity, poor temperature stability, brittleness in winter, softening in summer, rapid aging, yellow smoke when burning, pungent smell, and poisonous. Unmodified coal tar pitch is used for paving roads It is not conducive to prolonging the service life of the road, so the need to modify coal tar pitch is the general trend of developing and utilizing coal tar pitch resources

Method used

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  • Modified coal asphalt product and preparation method thereof
  • Modified coal asphalt product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Put 50 parts of coal tar pitch, 10 parts of petroleum pitch and 200 parts of co-solvent into the reactor, raise the temperature to 150°C, add 1 part of linear SBS, and cut it with a colloid mill for 0.2 h;

[0024] (2) Add 5 parts of waste rubber powder to the sheared product, after heating, stir at 150 r / min and then shear with a colloid mill for 0.4 h.

[0025] (3) Send the product after the second shearing to the development tank, swell at 170°C and 15 r / min for 0.6h, then add 0.2 parts of stabilizer, 0.5 parts of flame retardant and 0.01 parts of anti The aging agent was developed for 0.6h to produce a modified coal tar pitch product.

[0026] The performance of the coal tar pitch product modified in this embodiment is shown in Table 1.

[0027]

Embodiment 2

[0029] (1) First put 60 parts of coal tar pitch, 15 parts of petroleum pitch and 25 parts of co-solvent into the reactor, raise the temperature to 160°C, add 2 parts of star-shaped SBS, and cut it with a colloid mill for 0.3h;

[0030] (2) Add 5 to 35 parts of waste rubber powder to the sheared product, after heating, stir at 160 r / min and then shear with a colloid mill for 0.5h.

[0031] (3) Send the product after the second shearing to the development tank, swell at 175°C and 160 r / min for 0.8h, and then add 0.2 parts of stabilizer, 0.8 parts of flame retardant and 0.5 parts of anti The aging agent was developed for 0.8h to produce a modified coal tar pitch product.

[0032] The performance of the coal tar pitch product modified in this embodiment is shown in Table 1.

[0033]

Embodiment 3

[0035] (1) Put 80 parts of coal tar pitch, 20 parts of petroleum pitch and 30 parts of co-solvent into the reactor, raise the temperature to 180°C, add 4 parts of linear SBS, and cut it with a colloid mill for 0.4 h;

[0036] (2) Add 35 parts of waste rubber powder to the sheared product, after heating, stir at 300 r / min and then shear with a colloid mill for 0.6h.

[0037] (3) Send the product after the second shear to the development tank, swell at 180°C and 300 r / min for 1 hour, then add 0.3 parts of stabilizer, 1 part of flame retardant and 2 parts of anti-aging agent, and developed for 1h to obtain a modified coal tar pitch product.

[0038] The performance of the coal tar pitch product modified in this embodiment is shown in Table 1.

[0039]

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Abstract

The invention discloses a modified coal asphalt product. The modified coal asphalt product comprises the following materials in parts by weight: 50-80 parts of coal asphalt, 10-20 parts of petroleum asphalt, 1-4 parts of SBS (Styrene Butadiene Styrene), 5-35 parts of waste rubber powder, 20-30 parts of a cosolvent, 0.2-0.3 part of a stabilizer, 0.5-1 part of a flame retardant and 0.01-2 parts of an anti-ageing agent. The preparation method of the modified coal asphalt product overcomes defects in the prior art, is used for modifying the coal asphalt by adding the petroleum asphalt, the SBS, the waste rubber powder, the cosolvent, the stabilizer, the flame retardant and the anti-ageing agent into a reactor, and swelling and developing in a developing tank to obtain the modified coal asphalt product. The preparation method disclosed by the invention is simple, and the prepared product is long in service life, wide in material resource, low in cost, less in equipment investment, small in floor space and easy for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a modified coal tar pitch product and a preparation method thereof. Background technique [0002] Coal tar pitch is the abbreviation of coal tar pitch, which is the residue after coal tar distillation. It is a bulk product in the process of coal tar processing and an irreplaceable raw material for producing various carbon materials. China is a big country in the production and application of coal tar pitch. At present, the output of coal tar pitch has reached 2.5 million tons, accounting for more than 50% of the total coal tar. Therefore, making good use of coal tar pitch resources has become the focus of everyone's common attention. It is also a long-standing thing that coal tar pitch is mainly used as road paving material. However, it has been proved that coal tar pitch has poor plasticity, poor temperature stability, brittleness in winter, softening in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L21/00
Inventor 梁剑林国友罗永城黄景明卢兰韦玲双谢美萱黄南概莫孝辉杨艳颖
Owner ANHUI AODE MINING MACHINERY & EQUIP LTD
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