Modified coal pitch

A coal tar pitch modification technology, applied in building components, building insulation materials, construction, etc., can solve the problems of single modifier and mixed use that have not received widespread attention, so as to achieve convenient processing, increase use value, and alleviate supply shortage Effect

Inactive Publication Date: 2015-04-29
胡佩文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the modifiers on the market are used as a single addition, and the mixed use has not yet received widespread attention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh the following raw materials in parts by weight:

[0018] 90 parts of coal tar pitch

[0019] 4 parts p-tolualdehyde

[0020] Polycarbonate 2.1 parts

[0021] Coumarone-indene resin 2.7 parts

[0022] Bisphenol A type unsaturated polyester resin 1.9 parts

[0023] 5 parts of polyphosphoric acid;

[0024] Add p-tolualdehyde, polycarbonate, bisphenol A unsaturated polyester resin, coumarone-indene resin and polyphosphoric acid to the base coal tar pitch, mix and melt at 170-200°C and then pass through a colloid mill Grinding and shearing for 30-40 minutes to uniformly disperse in the asphalt cement to obtain the modified coal tar pitch of the present invention.

Embodiment 2

[0026] Weigh the following raw materials in parts by weight:

[0027] 90 parts of coal tar pitch

[0028] 2 parts p-methylbenzaldehyde

[0029] Polycarbonate 1.2 parts

[0030] Coumarone-indene resin 2.3 parts

[0031] Bisphenol A type unsaturated polyester resin 1.5 parts

[0032] 4 parts polyphosphoric acid.

[0033] Add p-tolualdehyde, polycarbonate, bisphenol A unsaturated polyester resin, coumarone-indene resin and polyphosphoric acid to the base coal tar pitch, mix and melt at 170-200°C and then pass through a colloid mill Grinding and shearing for 30-40 minutes to uniformly disperse in the asphalt cement to obtain the modified coal tar pitch of the present invention.

Embodiment 3

[0035] Weigh the following raw materials in parts by weight:

[0036] 90 parts of coal tar pitch

[0037] 2 parts p-methylbenzaldehyde

[0038] Polycarbonate 2.1 parts

[0039] Coumarone-indene resin 2.7 parts

[0040] Bisphenol A type unsaturated polyester resin 1.5 parts

[0041] 5 parts of polyphosphoric acid.

[0042] Add p-tolualdehyde, polycarbonate, bisphenol A unsaturated polyester resin, coumarone-indene resin and polyphosphoric acid to the base coal tar pitch, mix and melt at 170-200°C and then pass through a colloid mill Grinding and shearing for 30-40 minutes to uniformly disperse in the asphalt cement to obtain the modified coal tar pitch of the present invention.

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PUM

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Abstract

The invention relates to coal pitch and particularly relates to modified coal pitch. The modified coal pitch is prepared by adding p-tolualdehyde, polycarbonate, bisphenol A unsaturated polyester resin and coumarone-indene resin serving as modifiers and polyphosphate as an auxiliary solvent into matrix coal asphalt, wherein bisphenol A unsaturated polyester resin and coumarone-indene resin have super-strong molecular conjugation; the polymer has very strong compressive resistance and stability, and since the molecules are of a star-shaped structure, even if a position is broken, the molecules still maintain the properties of the polymer. The modified coal pitch has the advantages of strong tensile property, good temperature resistance, no bubbling and no flowing at high temperature and less possibility of breaking or cracking at low temperature, polycarbonate can be recycled, is low in cost and convenient to process and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a coal tar pitch, in particular to a modified coal tar pitch. Background technique [0002] Coal tar pitch is pitch made from coal tar obtained by dry distillation of coal and then processed through distillation. Compared with petroleum asphalt, coal tar pitch has the following differences in technical properties: lower temperature stability, better adhesion to mineral aggregates, poorer climate stability, and more harmful ingredients to the human body, odor heavier. At present, among the methods for improving the quality of asphalt, the most widely used method is to add modifiers to asphalt, so as to improve the stability of asphalt and reduce its aging. Polymer modified asphalt is a new type of road construction material with high added value. There are three main types of polymers commonly used in asphalt modification: one is thermoplastic elastomers, mainly styrene block copolymers, such as SBS, SIS, etc. Due to the goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L45/02C08L69/00C08L67/06C08K3/32C08K5/07
Inventor 胡佩文
Owner 胡佩文
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