Search

CN-121316335-B - Polymer pre-laid waterproof coiled material for tunnel

CN121316335BCN 121316335 BCN121316335 BCN 121316335BCN-121316335-B

Abstract

The invention relates to the technical field of waterproof coiled materials, and provides a high-molecular pre-paved waterproof coiled material for a tunnel, which sequentially comprises a hook surface layer, a high-molecular sheet layer, an adhesive waterproof layer and an anti-adhesive layer from top to bottom, wherein the adhesive waterproof layer is a hot-melt pressure-sensitive adhesive, and the hot-melt pressure-sensitive adhesive comprises the following raw materials, by weight, 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene segmented copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water-white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer, and the adding amount of the naphthenic oil is smaller than that of the polyisobutylene. Through the technical scheme, the problem of insufficient peeling strength caused by adding naphthenic oil in an adhesive waterproof layer of the high polymer pre-paved waterproof roll for the tunnel in the related technology is solved.

Inventors

  • PENG SONGTAO
  • YU QIUJU
  • XU FUXIN
  • TIAN JIBIN
  • LI JIANFANG
  • XIE YANJIAO

Assignees

  • 河北宇阳泽丽防水材料有限公司

Dates

Publication Date
20260508
Application Date
20251105

Claims (9)

  1. 1. The high polymer pre-paved waterproof coiled material for the tunnel is characterized by sequentially comprising, from top to bottom, a hook surface layer, a high polymer sheet layer, an adhesive waterproof layer and an anti-sticking layer, wherein the adhesive waterproof layer is a hot-melt pressure-sensitive adhesive, and the hot-melt pressure-sensitive adhesive comprises, by weight, 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene block copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer, and the adding amount of the naphthenic oil is smaller than that of the polyisobutylene; The polyisobutene is high-activity low-molecular polyisobutene, the mass fraction of alpha-double bonds of the high-activity low-molecular polyisobutene is more than or equal to 80%, and the number average molecular weight is 1200-1600.
  2. 2. The polymeric pre-laid waterproofing membrane for tunnels according to claim 1, wherein the material of the polymeric sheet layer comprises one of EVA, HDPE, CPE, PE, EPDM, TPO.
  3. 3. The polymer pre-laid waterproof roll for tunnel according to claim 1, wherein the material of the anti-adhesive layer comprises one of cloth, film and mineral particles.
  4. 4. The high polymer pre-paved waterproof roll for a tunnel of claim 1, wherein the structure of the styrene-isoprene-styrene block copolymer comprises one or more of a linear type, a star type and a star-line mixed type, and the styrene content of the styrene-isoprene-styrene block copolymer is 14-29 wt%.
  5. 5. The polymer pre-laid waterproof roll for tunnel according to claim 4, wherein when the structure of the styrene-isoprene-styrene block copolymer is a star-hybrid type, the styrene content is 14wt%, the diblock content is 12wt%, the melt mass flow rate is 9g/10min, and the test condition is 200 ℃ per 5kg.
  6. 6. The polymer pre-laid waterproof roll for tunnel according to claim 1, wherein the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076 and antioxidant 264.
  7. 7. The polymer pre-laid waterproof roll for tunnel according to claim 1, wherein the anti-aging agent comprises one or more of anti-aging agent 4010NA, anti-aging agent 4020, and anti-aging agent RD.
  8. 8. The polymer pre-laid waterproof roll for tunnel according to claim 1, wherein the light stabilizer comprises one or more of light stabilizer UV-531, light stabilizer UV-326 and light stabilizer UV-327.
  9. 9. The polymer pre-laid waterproof coiled material for tunnels according to claim 1, wherein the preparation method of the hot-melt pressure-sensitive adhesive comprises the following steps: S1, adding the naphthenic oil and the polyisobutene into a reaction kettle, heating to 120 ℃, adding the water Bai Qinghua rosin, and completely melting to obtain a mixture; and S2, when the mixture is heated to 145-150 ℃, adding the styrene-isoprene-styrene block copolymer, the amorphous alpha-olefin copolymer, the antioxidant and the light stabilizer, heating to 175-185 ℃, and completely melting to obtain the hot-melt pressure-sensitive adhesive.

Description

Polymer pre-laid waterproof coiled material for tunnel Technical Field The invention relates to the technical field of waterproof coiled materials, in particular to a high polymer pre-paved waterproof coiled material for a tunnel. Background The pre-laid waterproof roll has an increasing proportion in the building waterproof engineering of China in recent years, wherein materials represented by HDPE high-molecular self-adhesive films and TPO pressure-sensitive adhesive films are being suitable for more and more construction scenes. However, the application of TPO pre-laid coiled materials in tunnel waterproofing is still under fresh study. The primary reasons are that the coiled material needs to be nailed on the primary lining after the primary support is made of concrete during the waterproof construction of the tunnel, then the waterproof layer is integrally formed through hot air welding and the like and then is subjected to secondary lining construction, the coiled material is heavy in weight and slow in nailing and paving efficiency in the process, potential safety hazards exist, and on the other hand, the coiled material is nailed on the primary lining to cause irreversible damage to the coiled material layer, so that the problem of deserving consideration of how to better utilize the excellent performance of TPO pre-paved coiled material to bring the due effect in the tunnel construction is solved. In addition, the TPO pre-laid waterproof coiled material still has the defect in terms of peeling strength, and researches show that naphthenic oil is often added into an adhesive waterproof layer of the high-polymer pre-laid waterproof coiled material, and the naphthenic oil is widely used as a plasticizer of a TPO base material due to good compatibility and low-temperature fluidity so as to improve the processing fluidity and the low-temperature flexibility of the material, but light components contained in the naphthenic oil are easy to slowly separate out in the later use process, so that the interfacial bonding force between the adhesive layer and the base material is reduced, and further peeling strength attenuation is caused. If the peeling strength is insufficient, the waterproof system of the waterproof coiled material can fail, underground water can permeate along gaps, long-term leakage can cause chain damage of a tunnel structure, and the service life of the tunnel concrete structure is seriously shortened. Therefore, how to develop a pre-laid waterproof roll with excellent peeling strength and apply the pre-laid waterproof roll in a tunnel is a problem to be solved at present. Disclosure of Invention The invention provides a high polymer pre-laid waterproof roll for a tunnel, which solves the problem of insufficient peeling strength caused by adding naphthenic oil in an adhesive waterproof layer of the high polymer pre-laid waterproof roll for the tunnel in the related technology. The technical scheme is that the high polymer pre-paved waterproof roll for the tunnel comprises, from top to bottom, a hook surface layer, a high polymer sheet layer, an adhesive waterproof layer and an anti-sticking layer sequentially, wherein the adhesive waterproof layer is a hot-melt pressure-sensitive adhesive, and the hot-melt pressure-sensitive adhesive comprises, by weight, 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene segmented copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water-white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer, and the adding amount of the naphthenic oil is smaller than that of the polyisobutylene. As a further technical scheme, the upper surface of one side of the pre-paved waterproof roll is provided with an upper welding edge, the upper welding edge is different from the main body material in that the upper welding edge is free of a hook surface layer and a hook surface layer, and the lower surface of the other side of the welding edge is provided with a lower welding edge, and the lower surface of the lower welding edge is different from the main body material in that the lower surface is free of an adhesive waterproof layer and an anti-sticking layer. As a further technical scheme, the width of the hook surface layer is identical to that of the hook surface layer, and the width of the hook surface layer is 90-95 cm. As a further technical scheme, the material of the polymer sheet layer comprises one of EVA, HDPE, CPE, PE, EPDM, TPO, preferably TPO. As a further technical scheme, the width of the polymer sheet layer is 100cm, and the thickness is 0.75-1.8 mm. As a further technical scheme, the anti-sticking layer is made of one of cloth, a film and mineral particles, preferably mineral particles, wherein the mineral particles are isolation protection sand, and the average particle size of the isolation protection sand