Easy-to-foam shield foam additive

A technology of additives and foaming aids, which is applied in the direction of building construction, organic fertilizers, fertilizer mixtures, etc., can solve the problems of foam stability that is difficult to meet the requirements, and achieve the effect of fine and rich foam, slowing down the bursting, and small pores

Pending Publication Date: 2020-11-24
南京睿盾工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the foaming agent used in earth pressure balance shield tunneling, stability is a crucial performance, when the foaming agent is used in the shield tunneling process, according to the construction of the shield tunneling site, the foaming system emits foam, which is mixed with the soil for improvement, There is a time interval. Therefore, the air bubbles used in shield tunneling must have certain stability, and they will not decay excessively before being mixed with the excavated soil, and lose the purpose of improving the excavated soil. However, although the current foaming agent has excellent Foaming performance, but the stability of the foam is difficult to meet the requirements, it is necessary to add an additive to ensure its foaming stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment provides an easy-to-foam shield foam additive, which specifically includes the following components in parts by mass: sodium lauryl sulfate: 15 parts, cetyltrimethylammonium chloride: 10 parts, Fatty alcohol polyoxyethylene ether sodium sulfate: 8 parts, amphiphilic polymer: 5 parts, foam polystyrene: 30 parts, modified cellulose: 6 parts, water: 80 parts, polyethylene glycol: 3 parts, Sodium bicarbonate: 3 parts, foaming additive: 13 parts, nano-hydroxyapatite: 3 parts, carbonate: 5 parts, acid catalyst: 3 parts, sodium aluminate: 12 parts, polyalkylene glycol: 3 parts; wherein the foaming additive is mixed with diazenedicarboxamide, fatty acid and calcium salt in a mass ratio of 7:2:1.

Embodiment 2

[0017] This embodiment provides an easy-to-foam shield foam additive, which specifically includes the following components in parts by mass: sodium lauryl sulfate: 18 parts, cetyltrimethylammonium chloride: 13 parts, Fatty alcohol polyoxyethylene ether sodium sulfate: 12 parts, amphiphilic polymer: 6 parts, foam polystyrene: 35 parts, modified cellulose: 9 parts, water: 85 parts, polyethylene glycol: 5 parts, Sodium bicarbonate: 4 parts, foaming additive: 16 parts, nano-hydroxyapatite: 6 parts, carbonate: 6 parts, acid catalyst: 4 parts, lithium carbonate: 15 parts, polyalkylene glycol: 4 parts parts; wherein the foaming additive is mixed with diazene dicarboxamide, fatty acid and calcium salt in a mass ratio of 6.5:2.5:1.

Embodiment 3

[0019] This embodiment provides an easy-to-foam shield foam additive, which specifically includes the following components in parts by mass: sodium lauryl sulfate: 20 parts, cetyltrimethylammonium chloride: 18 parts, Fatty alcohol polyoxyethylene ether sodium sulfate: 13 parts, amphiphilic polymer: 8 parts, foam polystyrene: 10 parts, modified cellulose: 8 parts, water: 90 parts, polyethylene glycol: 6 parts, Foaming aid: 5 parts, foaming additive: 20 parts, foam stabilizer: 7 parts, dispersant: 7 parts, acid catalyst: 6 parts, coagulation accelerator: 22 parts, hydrophilic auxiliary agent: 7 parts; Wherein the foaming additive is diazenedicarbonamide, fatty acid and calcium salt mixed in a mass ratio of 6:3:1.

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PUM

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Abstract

The invention discloses an easy-to-foam shield foam additive. The easy-to-foam shield foam additive specifically comprises the following components in parts by mass: 15-20 parts of sodium dodecyl sulfate, 10-18 parts of cetyltrimethylammonium chloride, 8-15 parts of fatty alcohol polyoxyethylene ether sulfate, 5-8 parts of an amphiphilic polymer, 25-40 parts of expanded polystyrene, 4-12 parts ofmodified cellulose, 80-90 parts of water, 3-6 parts of polyethylene glycol, 3-5 parts of a blowing promoter, 10-26 parts of a foaming additive, 3-7 parts of a foam stabilizer, 5-8 parts of a dispersant, 3-8 parts of an acid catalyst, 10-25 parts of a coagulant and 2-8 parts of a hydrophilic additive.

Description

technical field [0001] The present invention relates to an easily foamable shield foam additive. Background technique [0002] For the foaming agent used in earth pressure balance shield tunneling, stability is a crucial performance, when the foaming agent is used in the shield tunneling process, according to the construction of the shield tunneling site, the foaming system emits foam, which is mixed with the soil for improvement, There is a time interval. Therefore, the air bubbles used in shield tunneling must have certain stability, and they will not decay excessively before being mixed with the excavated soil, and lose the purpose of improving the excavated soil. However, although the current foaming agent has excellent Foaming performance, but the stability of the foam is difficult to meet the requirements, it is necessary to add an additive to ensure its foaming stability. Contents of the invention [0003] The technical problem to be solved by the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K103/00
CPCC09K17/40C09K2103/00
Inventor 杨志勇江玉生褚立孔
Owner 南京睿盾工程科技有限公司
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