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High-strength polysulfide sealant

A polysulfide sealant, high-strength technology, applied in the field of sealant, can solve the problem of graphene oxide that has not been seen, increase the bonding performance of polysulfide sealant, etc.

Active Publication Date: 2012-01-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is no report on the use of graphene oxide to increase the bonding performance of polysulfide sealants.

Method used

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  • High-strength polysulfide sealant
  • High-strength polysulfide sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4 and comparative example 5-6

[0034] Six formulations in Table 1 were used to prepare polysulfide adhesives.

[0035] The base paste (A component) and vulcanized paste (B component) are prepared and kneaded separately.

[0036] When configuring the base paste, weigh the weight of each component of the base paste according to the ratio of each component in the formula of the base paste. When weighing the raw materials of the base paste, first weigh the solid material (graphene oxide, additives), and then Weigh the liquid materials (liquid polysulfide rubber, plasticizer, tackifier); after the above liquid materials are mixed evenly, then mix them with the previously weighed solid materials in order and fully wet them.

[0037] When preparing the vulcanized paste, first weigh the manganese dioxide and plasticizer, and mix them evenly; then weigh and add other components, and fully wet them after mixing.

[0038] The amount of diphenylguanidine should be adjusted according to different use environments. When...

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Abstract

The invention discloses a high-strength polysulfide sealant which comprises a base paste and a vulcanized paste, wherein the base paste comprises 30-80% of liquid polysulfide rubber, 5-60% of graphene oxide, 0.5-10% of tackifier, 5-20% of plasticizer and 0-5% of addition agent; the vulcanized paste comprises 25-70% of vulcanizing agent, 25-70% of plasticizer and 0.5-5% of vulcanization accelerator; and the weight ratio of the base paste to the vulcanized paste is (100: 6)-(100: 15). The high-strength polysulfide sealant disclosed by the invention has the characteristics that because of adopting the graphene oxide as a reinforcing agent, the tensile strength of the polysulfide sealant is increased; and the material is stable in process and good in repeatability. The material disclosed by the invention can be applied to the bonding of sealing parts such as airplanes, high-speed trains and vehicles and the like, therefore, the polysulfide sealant disclosed by the invention has great application value in industry.

Description

technical field [0001] The invention belongs to the technical field of sealants, in particular to a high-strength polysulfide sealant and a preparation method thereof. Background technique [0002] Graphene is a new carbon material composed of carbon atoms arranged neatly in a hexagonal lattice, presenting a single-layer or multi-layer structure, with excellent mechanical properties, electrical conductivity, thermal conductivity and light transmittance. The establishment of the redox method has realized the large-scale preparation of graphene (Carbon, 2006, 44, 3342-3347; Mater.Chem., 2006, 16, 155-158), and made the development of graphene / polymer composites a possible. Recently, graphene / polyurethane, acrylic resin, polyvinylidene fluoride, polystyrene, and epoxy resin composite materials have been reported (Adv. Mater., 2011, 23, 1089-1115). Graphene / polymer composite materials can realize the complementary advantages of a single material, greatly improve the mechanical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J181/04C09J11/04C09J11/08C09J11/06C09K3/10
Inventor 徐意张启龙杨辉李鹏黄振晖陈文杰
Owner ZHEJIANG UNIV
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