Blended waterproof asphalt and application thereof

Abstract

The invention belongs to the field of building waterproof materials, and particularly relates to blended waterproof asphalt and application, and the blended waterproof asphalt is prepared by blending heavy washing oil with the flash point of more than 180 DEG C with No.10 building petroleum asphalt with the softening point of more than 100 DEG C according to a set proportion to form the blended waterproof asphalt with the softening point of more than 80 DEG C. According to the technical scheme, the heavy washing oil and the No.10 building petroleum asphalt are blended to form the blended waterproof asphalt with the softening point being greater than 80 DEG C, so that the utilization value of the heavy washing oil is improved, and a small amount of alkylaluminoxane is added in the blending process, so that the utilization rate of the heavy washing oil is improved. A part of components in the heavy wash oil and a part of components in the No.10 building petroleum asphalt are subjected to a copolymerization reaction, so that the softening condition of the existing waterproof coiled material at high temperature in summer is improved while the waterproof performance is improved.

Description

Technical Field

[0001] The invention belongs to the field of building waterproof materials, and in particular relates to a blended waterproof asphalt and its application. Background Art

[0002] Heavy wash oil is a byproduct of the wash oil distillation process. It contains more asphaltene, has high viscosity, and has complex ingredients, including acenaphthene, fluorene, dibenzofuran, and methyldibenzofuran. Its melting point is between 95-115℃, and its boiling point is between 270-300℃. Most of it is treated as fuel oil, and the value utilization rate of the product is low. Heavy wash oil contains more aromatic oil, etc. It has good compatibility with asphalt modifier SBS, and can be used in combination to improve the performance of SBS modified asphalt and related materials. Summary of the invention

[0003] The purpose of the present invention is to provide a blended waterproof asphalt and its application, which can better improve the high and low temperature performance of modified asphalt waterproof membrane, so that heavy washing oil can be used at high value and avoid the safety problem of high temperature processing of SBS modified asphalt.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A blended waterproof asphalt is prepared by blending heavy washing oil with a flash point greater than 180°C and No. 10 construction petroleum asphalt with a softening point greater than 100°C according to a set ratio to form a blended waterproof asphalt with a softening point greater than 80°C.

[0006] Furthermore, the heavy wash oil has an open flash point >180°C and a kinematic viscosity at 100°C >13mm / s.

[0007] Furthermore, the mass ratio of the heavy wash oil to No. 10 construction petroleum asphalt is 5%:95%-10%:90%.

[0008] The blending process of any of the above-mentioned blended waterproof asphalt is: add a set amount of heavy wash oil into the blending kettle and heat it to 120°C, then add a toluene solution of alkyl aluminoxane with a mass percentage of 0.5-2% of the heavy wash oil, and at the same time add a set amount of No. 10 construction petroleum asphalt, then raise the temperature to 170-200°C, stir at 100-200r / min for 10-30min, and naturally cool to room temperature to obtain the blended waterproof asphalt.

[0009] Furthermore, the concentration of the toluene solution of alkylaluminoxane is 1 mol / L.

[0010] An application, the blended waterproof asphalt prepared by any of the above items is added to SBS modified asphalt waterproof membrane according to a set proportion.

[0011] Furthermore, the added mass percentage of the blended waterproof asphalt in the SBS modified asphalt waterproof membrane is 3%-5%.

[0012] The beneficial effects of the present invention are:

[0013] The technical solution improves the utilization value of the heavy washing oil by blending heavy washing oil with No. 10 building petroleum asphalt to form a blended waterproof asphalt with a softening point greater than 80°C, and by adding a small amount of alkyl aluminoxane during the blending process, some components in the heavy washing oil and some components in No. 10 building petroleum asphalt undergo copolymerization reaction, thereby improving the waterproof performance and the softening of the existing waterproof membrane at high temperatures in summer. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0015] The present application is described in detail below in conjunction with the examples. However, it should be understood that these examples are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given only to further illustrate the features and advantages of the present invention, rather than to limit the claims of the present invention, and the protection scope of the present invention is not limited to the following examples.

[0016] The heavy wash oil used in the following embodiments of the present invention is Heze Xinfengde Chemical Heavy Wash Oil, with a softening point of 190°C and a rotational viscosity of 14.5 mm² / s at 100°C; the No. 10 construction petroleum asphalt is Qingzhou Jinyuan No. 10 construction petroleum asphalt, with a softening point of 110°C.

[0017] Example 1

[0018] Add 500g of heavy wash oil into the blending kettle, heat to 120°C, then add 2.5g of toluene solution of alkylaluminoxane with a molar concentration of 1 mol / L, and add 9500g of No. 10 building petroleum asphalt. Then heat to 190°C, stir at a speed of 200r / min, stir for 20min, and naturally cool to room temperature to obtain blended waterproof asphalt.

[0019] The above-mentioned blended waterproof asphalt is added at a mass percentage of 3% to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula to prepare SBS modified asphalt waterproof membrane. Compared with the conventional petroleum asphalt SBS modified asphalt waterproof membrane without adding blended waterproof asphalt, the low-temperature flexibility temperature is reduced by 1.5°C and the softening point is increased by 3°C.

[0020] Example 2

[0021] Add 1000g of heavy wash oil into the blending kettle, heat to 120°C, then add 10g of toluene solution of alkylaluminoxane with a molar concentration of 1 mol / L, and add 9000g of No. 10 building petroleum asphalt. Then heat to 190°C, stir at a speed of 200r / min, stir for 20min, and naturally cool to room temperature to obtain blended waterproof asphalt.

[0022] The above-mentioned blended waterproof asphalt is added at a mass percentage of 5% to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula to prepare SBS modified asphalt waterproof membrane. Compared with the conventional petroleum asphalt SBS modified asphalt waterproof membrane without adding blended waterproof asphalt, the low-temperature flexibility temperature is reduced by 2°C and the softening point is increased by 3.3°C.

[0023] Example 3

[0024] Add 800g of heavy washing oil into the blending kettle, heat to 120°C, then add 7g of toluene solution of alkylaluminoxane with a molar concentration of 1 mol / L, and add 9200g of No. 10 building petroleum asphalt. Then heat to 190°C, stir at a speed of 200r / min, stir for 30min, and naturally cool to room temperature to obtain blended waterproof asphalt.

[0025] The above-mentioned blended waterproof asphalt is added at a mass percentage of 4% to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula to prepare SBS modified asphalt waterproof membrane. Compared with the conventional petroleum asphalt SBS modified asphalt waterproof membrane without adding blended waterproof asphalt, the low-temperature flexibility temperature is reduced by 1.8°C and the softening point is increased by 4°C.

[0026] Example 4

[0027] Add 700g of heavy wash oil into the blending kettle, heat to 120°C, then add 14g of toluene solution of alkylaluminoxane with a molar concentration of 1 mol / L, and add 9300g of No. 10 building petroleum asphalt. Then heat to 190°C, stir at a speed of 200r / min, stir for 30min, and naturally cool to room temperature to obtain blended waterproof asphalt.

[0028] The above-mentioned blended waterproof asphalt is added at a mass percentage of 5% to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula to prepare SBS modified asphalt waterproof membrane. Compared with the conventional petroleum asphalt SBS modified asphalt waterproof membrane without adding blended waterproof asphalt, the low-temperature flexibility temperature is reduced by 1°C and the softening point is increased by 2°C.

[0029] Example 5

[0030] Add 600g of heavy washing oil into the blending kettle, heat to 120°C, then add 10g of toluene solution of alkylaluminoxane with a molar concentration of 1 mol / L, and add 9400g of No. 10 building petroleum asphalt. Then heat to 190°C, stir at a speed of 200r / min, stir for 30min, and naturally cool to room temperature to obtain blended waterproof asphalt.

[0031] The above-mentioned blended waterproof asphalt was added at a mass percentage of 4% to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula to prepare SBS modified asphalt waterproof membrane. Compared with the conventional petroleum asphalt SBS modified asphalt waterproof membrane without adding blended waterproof asphalt, the low-temperature flexibility temperature was reduced by 1.2°C and the softening point was increased by 2.3°C.

[0032] It can be seen from the above embodiments that adding the blended waterproof asphalt to the conventional petroleum asphalt SBS modified asphalt waterproof membrane formula can improve the high and low temperature performance of the modified asphalt waterproof membrane, and the best effect is achieved when the amount of alkyl aluminoxane toluene solution in the blended waterproof asphalt is 0.5-1%.

[0033] The embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here, and these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A blended waterproof asphalt, characterized in that: Heavy washing oil with a flash point greater than 180°C is blended with No. 10 construction petroleum asphalt with a softening point greater than 100°C in a set ratio to form a blended waterproof asphalt with a softening point greater than 80°C.

2. The blended waterproof asphalt according to claim 1, characterized in that: The open flash point of heavy wash oil is >180℃, and the kinematic viscosity at 100℃ is >13mm / s.

3. The blended waterproof asphalt according to claim 1, characterized in that: The mass ratio of the heavy wash oil to No. 10 construction petroleum asphalt is 5%:95%-10%:90%.

4. The blended waterproof asphalt according to claim 1, characterized in that: The blending process of blended waterproof asphalt is as follows: add a set amount of heavy washing oil into the blending kettle and heat it to 120°C, then add a toluene solution of alkylaluminoxane with a mass percentage of 0.5-2% of the heavy washing oil, and at the same time add a set amount of No. 10 building petroleum asphalt, then raise the temperature to 170-200°C, stir at 100-200r / min for 10-30min, and naturally cool to room temperature to obtain blended waterproof asphalt.

5. The blended waterproof asphalt according to claim 4, characterized in that: The concentration of the toluene solution of alkylaluminoxane was 1 mol / L.

6. An application, characterized in that: The blended waterproof asphalt prepared in any one of claims 1 to 5 is added to the SBS modified asphalt waterproof membrane in a set proportion.

7. The use according to claim 6, characterized in that: The mass percentage of blended waterproof asphalt added to SBS modified asphalt waterproof membrane is 3%-5%.