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CN-121974574-A - Modified basalt fiber and asphalt coating material, preparation methods thereof, composition for asphalt coating material and waterproof coiled material

CN121974574ACN 121974574 ACN121974574 ACN 121974574ACN-121974574-A

Abstract

The invention relates to the field of building waterproof materials, and discloses a modified basalt fiber and asphalt coating material, a preparation method thereof, a composition for the asphalt coating material and a waterproof coiled material. The preparation method of the modified basalt fiber comprises the steps of reacting raw basalt fiber with a coupling agent I for 2-3 hours at 55-65 ℃ in the presence of a solvent to obtain the modified basalt fiber. The pre-paved modified asphalt waterproof coiled material provided by the invention has stronger cohesiveness with post-pouring cement mortar, and simultaneously has excellent fire resistance and puncture resistance, thereby being beneficial to pre-paved construction.

Inventors

  • CHEN SISI
  • Zhang Peie
  • WANG XIANJUN
  • LI XIONG
  • LIU YANNA

Assignees

  • 科顺防水科技股份有限公司

Dates

Publication Date
20260505
Application Date
20251225

Claims (10)

  1. 1. A method of making a modified basalt fiber, the method comprising: Reacting a raw material basalt fiber with a coupling agent I for 2-3 hours at 55-65 ℃ in the presence of a solvent to obtain the modified basalt fiber; the coupling agent I is a silane coupling agent; the dosage mass ratio of the basalt fiber raw material to the coupling agent I is 1:0.02-0.06.
  2. 2. A method according to claim 1, characterized in that the individual fiber diameter of the raw basalt fiber is 13-17 μm, the elastic modulus >36MPa, the fiber length is 3-6mm.
  3. 3. A modified basalt fiber produced by the method of claim 1 or 2.
  4. 4. A composition for asphalt coating materials is characterized by comprising a main agent and an auxiliary agent, wherein the main agent comprises matrix asphalt, rock fiber and a polymer composite modifier; Based on the total weight of the composition, the content of the matrix asphalt is 35-90wt%, the content of the rock fiber is 0.5-2wt%, and the content of the polymer composite modifier is 3-6wt%; the rock fiber comprises modified basalt fiber and sepiolite fiber with the mass ratio of 1:0.02-0.05; The modified basalt fiber is the modified basalt fiber of claim 3.
  5. 5. The composition of claim 4, wherein the matrix asphalt comprises a first asphalt having a penetration of 180-200 (0.1 mm) at 25 ℃ and a second asphalt having a penetration of 60-100 (0.1 mm) at 25 ℃; And/or, the content of the first asphalt is 15-40wt% and the content of the second asphalt is 20-50wt% based on the total weight of the composition; And/or the polymer composite modifier comprises SEPS, synthetic rubber and SBS in a mass ratio of 1:1-2.5:0.4-1.7.
  6. 6. The composition according to claim 4 or 5, wherein the auxiliary agent comprises tackifying resin, reclaimed rubber powder and filler; And/or, based on the total weight of the composition, the content of the tackifying resin is 2-6wt%, the content of the reclaimed rubber powder is 5-8wt%, and the content of the filler is 25-35wt%.
  7. 7. A process for preparing an asphalt coating, characterized in that it is carried out using the components of the composition according to any one of claims 4 to 6, comprising: (1) Firstly mixing matrix asphalt, a polymer composite modifier and tackifying resin to obtain mixed modified material adhesive I; (2) Performing secondary mixing on the mixed modified material rubber I and the reclaimed rubber powder and the rock fiber to obtain mixed modified material rubber II; (3) And thirdly mixing the mixed modified material adhesive II with a filler to obtain the asphalt coating material.
  8. 8. The method of claim 7, wherein in step (1), the first mixing conditions include a temperature of 170-180 ℃ for a time of 1-2 hours; and/or, in step (2), the second mixing conditions include a temperature of 170-180 ℃ for a time of 2-2.5h; And/or, in the step (3), the third mixing condition comprises a temperature of 170-180 ℃ and a time of 0.5-1h.
  9. 9. An asphalt coating prepared by the method of claim 7 or 8.
  10. 10. The pre-paved modified asphalt waterproof coiled material is characterized by comprising a sand layer or a shale layer, a first modified adhesive layer, a reinforced tire base layer, a second modified adhesive layer and an anti-sticking layer which are sequentially laminated; the first modified glue layer and the second modified glue layer are formed from the asphalt coating of claim 9.

Description

Modified basalt fiber and asphalt coating material, preparation methods thereof, composition for asphalt coating material and waterproof coiled material Technical Field The invention relates to the field of building waterproof materials, in particular to a modified basalt fiber and a preparation method thereof, a composition for asphalt coating materials, an asphalt coating material and a preparation method thereof, and a pre-paved modified asphalt waterproof coiled material. Background The pre-paved waterproof coiled material is used as a core material of the technology of external prevention and internal adhesion of underground engineering, and has become the main stream choice of underground waterproof engineering by virtue of the advantage of being fully adhered with structural concrete and avoiding water channeling, so that the waterproof coiled material can be widely applied to the waterproofing of various underground building bottom plates and side walls. However, the existing pre-paved waterproof coiled materials have obvious technical defects, including (1) Hou Xingcha resistance, ageing, embrittlement and other phenomena of asphalt under the action of long-term sunlight irradiation, high temperature, low temperature and other environmental factors, and poor waterproof performance and adhesive performance of the asphalt, (2) poor sand layer anti-damage performance, workers need to bind and weld reinforcing steel bars on the sand surface after the pre-paved coiled materials are constructed, welding slag is easy to fall onto the coiled materials, the coiled materials are easy to burn through or risk of fire, and (3) poor adhesive performance, asphalt adhesive layers or hot melt adhesive layers and the sand surface are easy to fall off due to the blocking of the sand layer on the upper surface of the pre-paved coiled materials, and water is easy to permeate from the middle due to the poor adhesive performance. CN115139625A provides a weather-resistant exposed modified asphalt waterproof coiled material and a preparation method thereof, the waterproof coiled material comprises a macromolecule consolidation spray coating layer, a basalt particle layer, a polymer modified asphalt layer, a matrix reinforcing layer, a polymer modified asphalt layer and a polyethylene film anti-sticking layer from top to bottom in sequence, and the waterproof coiled material is prepared by two steps of preparing modified asphalt mixture and preparing waterproof coiled material. However, the waterproof roll provided by the prior art is insufficient in damage resistance and adhesiveness, and is difficult to use as a pre-laid waterproof roll. Therefore, development of a pre-laid waterproof roll having weather resistance, adhesion and sand layer damage prevention is needed. Disclosure of Invention The invention aims to provide a pre-laid waterproof coiled material with cohesiveness, damage resistance and weather resistance. In order to achieve the above object, a first aspect of the present invention provides a method for preparing modified basalt fiber, the method comprising: Reacting a raw material basalt fiber with a coupling agent I for 2-3 hours at 55-65 ℃ in the presence of a solvent to obtain the modified basalt fiber; the coupling agent I is a silane coupling agent; the dosage mass ratio of the basalt fiber raw material to the coupling agent I is 1:0.02-0.06. A second aspect of the invention provides a modified basalt fiber produced by the method of the first aspect. The third aspect of the invention provides a composition for asphalt coating, which comprises a main agent and an auxiliary agent, wherein the main agent comprises matrix asphalt, rock fiber and a polymer composite modifier; Based on the total weight of the composition, the content of the matrix asphalt is 35-90wt%, the content of the rock fiber is 0.5-2wt%, and the content of the polymer composite modifier is 3-6wt%; the rock fiber comprises modified basalt fiber and sepiolite fiber with the mass ratio of 1:0.02-0.05; the modified basalt fiber is the modified basalt fiber of the second aspect of the invention. In a fourth aspect, the present invention provides a method of preparing an asphalt coating, the method being carried out using the components of the composition according to the third aspect of the invention, comprising: (1) Firstly mixing matrix asphalt, a polymer composite modifier and tackifying resin to obtain mixed modified material adhesive I; (2) Performing secondary mixing on the mixed modified material rubber I and the reclaimed rubber powder and the rock fiber to obtain mixed modified material rubber II; (3) And thirdly mixing the mixed modified material adhesive II with a filler to obtain the asphalt coating material. In a fifth aspect, the present invention provides an asphalt coating prepared by the method of the fourth aspect. The sixth aspect of the invention provides a pre-laid modified asphalt waterproof coiled material, which compr