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Sizing material for self-adhesive rubber water-stop belt and preparation method for sizing material

A self-adhesive rubber and waterstop technology, applied in the field of rubber for rubber waterstops

Inactive Publication Date: 2015-10-21
HENGSHUI ZHONGTIEJIAN ENG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the traditional rubber waterstop compound formula is used as the base material formula of the self-adhesive rubber waterstop, the peel strength of the self-adhesive rubber waterstop and cement mortar after hot air aging will decrease by 70%, and the failure form will be changed from self-adhesive before aging The damage of the adhesive layer and the concrete base surface becomes the damage of the self-adhesive adhesive layer and the base material of the waterstop
The adhesive force between the self-adhesive layer and the base material of the rubber waterstop decreases greatly after aging, because the composition of the rubber waterstop is complex, waxes (such as paraffin wax, microcrystalline wax), antioxidants (such as antioxidant 4010) , anti-aging agent RD) and other small molecular substances are easy to move out to the surface of the waterstop substrate, these substances will isolate the self-adhesive layer from the rubber waterstop substrate, seriously reducing the adhesion between the self-adhesive layer and the surface of the waterstop contact strength, and even cause the self-adhesive layer to separate from the surface of the waterstop, eventually resulting in water leakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The first step is to add 100 parts by weight of natural rubber into the internal mixer, and plasticize for 4 minutes under the conditions of an initial temperature of 75 to 85°C and a rotational speed of 80 rpm;

[0034] In the second step, 4 parts by weight of ZnO, 1.5 parts by weight of SA, 50 parts by weight of N550, 20 parts by weight of active microsilica, 8 parts by weight of motor oil, 1.5 parts by weight of NAPM, 1.5 parts by weight of CTU and 0.5 parts by weight of 100% of CZ was added to the internal mixer and mixed with natural rubber for 3 minutes; then the mixed masterbatch was discharged and cooled at room temperature for 4 hours;

[0035] The third step is to add the masterbatch discharged in step 2 into the open mill, and then add 1.5 parts by weight of S as a vulcanizing agent for mixing, and after thinning six times, the film can be unloaded.

Embodiment 2

[0037] The selected materials include 100 parts by weight of butadiene rubber, 4.5 parts by weight of ZnO, 2 parts by weight of SA, 55 parts by weight of N550, 18 parts by weight of active microsilica, 6 parts by weight of paraffin oil, 1.5 parts by weight of NAPM, 2 parts by weight of CTU, S1 .5 parts by weight and CZ 0.5 parts by weight.

[0038] The process is as follows:

[0039] (1) Add the cis-butadiene rubber into the internal mixer, and masticate for 2 minutes under the conditions of an initial temperature of 75 to 85 °C and a rotation speed of 70 rpm;

[0040] (2) Add other raw materials except the vulcanizing agent to the internal mixer, and mix together with the butadiene rubber for 4 minutes; then discharge the mixed masterbatch and cool it at room temperature for 4 hours;

[0041] (3) Add the masterbatch discharged in step (2) into the open mill, and then add the vulcanizing agent for mixing, and thin it for six times and then unload it.

Embodiment 3

[0043] The selected materials include 100 parts by weight of styrene-butadiene rubber, 5 parts by weight of ZnO, 2 parts by weight of SA, 20 parts by weight of N550, 45 parts by weight of N330, 30 parts by weight of active microsilica, 6 parts by weight of motor oil, 2 parts by weight of NAPM, CTU1. 5 parts by weight; 1.8 parts by weight of S, 1 part by weight of CZ.

[0044] The process is as follows:

[0045] (1) Add the styrene-butadiene rubber into the internal mixer, and plasticize for 2 minutes under the conditions of an initial temperature of 75 to 85 °C and a rotation speed of 70 rpm;

[0046] (2) Add other raw materials except the vulcanizing agent into the internal mixer, and mix together with the styrene-butadiene rubber for 2.5 minutes; then discharge the mixed masterbatch and cool it at room temperature for 4 hours;

[0047] (3) Add the masterbatch discharged in step (2) into the open mill, and then add the vulcanizing agent for mixing, and thin...

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Abstract

The invention belongs to the technical field of self-adhesive rubber water-stop belts, and particularly relates to a sizing material for a self-adhesive rubber water-stop belt and a preparation method for the sizing material. According to the main technical scheme adopted by the invention, the preparation method comprises: adding diene rubber into an internal mixer to plastify, and then adding an active agent, an anti-ageing agent, a reinforcing agent, operation oil and a functional filler into the internal mixer to mix with natural rubber; then, discharging and cooling mixed rubber master batch; and adding the discharged rubber master batch into an open mill, and adding a vulcanizing agent to mix, and carrying out thin-passing and batching-off, thereby obtaining the sizing material. The self-adhesive rubber water-stop belt prepared from the sizing material can be used for firmly connecting a self-adhesive layer with a concrete interface layer, thereby greatly improving adhesion between the water-stop belt and concrete, and effectively solving water leakage and water mixing problems of expansion joints, deformation joints and construction joints.

Description

technical field [0001] The invention belongs to the technical field of rubber for rubber waterstops, and in particular relates to a rubber material for self-adhesive rubber waterstops and a preparation method thereof. Background technique [0002] The rubber waterstop is mainly used for the foundation project integrated with the concrete structure in the construction joints, joints and deformation joints when the concrete is poured in place. There are convex ribs on both sides of the rubber waterstop structure, and the convex ribs are embedded in the structural concrete by 100mm~200mm, and at the same time play a role in enhancing the grip between the waterstop and the structural concrete and preventing leakage of water from leaking into the concrete structure. However, due to the difference in the expansion coefficient of the rubber material and the concrete material, a water seepage channel will be formed between the convex rib and the concrete after a long time of actio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K3/22C08K5/09C08K3/04C08K5/20C08K3/36
CPCC08K2201/003C08K2201/006C08L7/00C08L9/00C08L9/06C08L2201/08C08L91/00C08K13/02C08K2003/2296C08K3/04C08K5/20C08K5/405C08K3/36C08L91/06
Inventor 陈少静金家康王红续李鑫李鹏李二茂王庆培贾雷雷杜志萍
Owner HENGSHUI ZHONGTIEJIAN ENG RUBBER
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