Shield tail sealing grease and preparation method thereof
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A shield tail sealing and grease sealing technology, applied in the field of grease, can solve problems such as the gap between adhesion and impermeability, insufficient adhesion and weak impermeability, and achieve high impermeability and enhance adhesion. and stability, the effect of stable product performance
Inactive Publication Date: 2016-12-21
XIAMEN NORNS TECH
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Problems solved by technology
At present, compared with foreign brand products, there is still a certain gap in the adhesion and impermeability of domestic products, especially in projects with high water pressure, often resulting in shield tail leakage due to weak impermeability; in addition , the hand-applied shield tail seal grease used at the start of the shield machine often falls and flows during the construction process due to insufficient adhesion
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Embodiment 1
[0022] Shield tail sealing grease in the present embodiment, its component and mass percent are as follows: 30% hydraulic oil; 6% petroleum resin; 19% calcium base grease; 5% alkyd resin; 30% calcium carbonate; 5% wood fiber, 5% glass fiber, the fiber length is 0.5 ~ 4mm.
[0023] Preparation method: Put the hydraulic oil into the kneader, start stirring and heat up to about 80°C, then put in petroleum resin, stir until the petroleum resin is completely dissolved, stop stirring and heating; after cooling to 50-60°C, put in calcium-based grease, alcohol Acid resin and calcium carbonate, stir and knead until uniform; finally add wood fiber and glass fiber, stir and knead for 1 to 2 hours.
Embodiment 2
[0025] Shield tail sealing grease in the present embodiment, its component and mass percentage are as follows: 20% corn oil; 8% rosin resin; 20% lithium base grease; 4% polybutyl acrylate; 40% bentonite; 5% asbestos fiber, fiber length is 0.5 ~ 4mm.
[0026] Preparation method: Put corn oil into the kneader, start stirring and heat up to about 80°C, then put in rosin resin, stir until the rosin resin is completely dissolved, stop stirring and heating; after cooling to 50-60°C, put in lithium base grease, polyester Butyl acrylate and bentonite, stir and knead until uniform; finally add synthetic fiber and asbestos fiber, stir and knead for 1 to 2 hours.
Embodiment 3
[0028] The shield tail sealing grease in the present embodiment has the following components and mass percentages: 15% linseed oil; 7% polyisobutylene; 20% lithium-based grease; 5% polyurethane; 45% kaolin; Paoyrite fiber, the fiber length is 0.5-4mm.
[0029] Preparation method: Put linseed oil into the kneader, start stirring and heat up to about 80°C, then put in polyisobutylene, stir until the polyisobutylene is completely dissolved, stop stirring and heating; after cooling to 50-60°C, put in lithium-based grease, polyurethane in turn and kaolin, stir and knead until uniform; then put in bamboo fiber and sepiolite fiber, stir and knead for 1 to 2 hours.
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Abstract
The invention discloses shield tail sealing grease and a preparation method thereof. The shield tail sealing grease for tunnel construction tunneling equipment namely a shield tunneling machine consists of the following components: 15-30% of base oil, 10-20% of lubricating grease, 2-8% of a tackifier, 1-5% of an adhesion promoter, 5-10% of fibers, and 30-50% of a flour filler. The shield tail sealing grease is mainly formed by the combination of the base oil, the lubricating grease, the fibers and the filler, particularly the adhesion promoter is added, and the adhesion and the stability of a product are enhanced by the interaction force between the adhesion promoter and the surface of a base material; the product is stable in performance, avoids phenomena of segregation and sun crack when exposed in the air for a long time, does not generate sag and flow when encountering heat, and can still keep a relatively good pumping performance at a low temperature; and the shield tail sealing grease has relatively high impermeability, is convenient to operate and easy to pump, has excellent adhesion and certain corrosion resistance to metals, has outstanding water-stop and lubricating effects, and is easily biodegradable, environment-friendly and nontoxic.
Description
technical field [0001] The invention relates to a kind of grease, in particular to a kind of shield tail sealing grease used for tunnel engineering excavation equipment shield machine. Background technique [0002] my country's urban construction is developing rapidly, and a large number of underground projects have been built. At present, 24 cities in mainland China are undergoing pre-planning, design, preparation and construction of urban rail transit. With the development of our country's economy, a climax of rail transit construction has been set off, which has brought unprecedented challenges and development opportunities to the rail transit industry and related industries. In addition, the small-diameter shield method used in the construction of large-diameter shield method highway tunnels, hydraulic tunnels, power tunnels and urban underground pipelines is also becoming more and more popular. Therefore, shield tunneling construction will be the mainstream of undergro...
Claims
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