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Preparation method of high-performance viscous elastic sealant

An elastic sealing and viscous technology, applied in the field of building sealants, can solve the problems of poor flame retardancy and application effects, and achieve the effects of good temperature resistance, long service life and high production efficiency

Inactive Publication Date: 2018-12-18
HEFEI LONGYANG AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of sealant uses antioxidants and anti-ultraviolet agents to improve the weather resistance of the sealant, and has good stability and reproducibility, but its flame retardancy is poor, and its applicability is affected

Method used

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  • Preparation method of high-performance viscous elastic sealant
  • Preparation method of high-performance viscous elastic sealant
  • Preparation method of high-performance viscous elastic sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment relates to a high-performance viscous elastic sealant and a preparation method thereof. The sealant is composed of the following raw materials in parts by weight:

[0048]46 parts of vinyl chloride-acrylate copolymers;

[0049] 30 parts of tert-butylphenol-formaldehyde tackifying resin;

[0050] 8 parts of illite powder with a particle size of 20 μm;

[0051] 3 parts of methylisothiazolinone;

[0052] 7 parts of fluff powder with a particle size of 15 μm;

[0053] 5.5 parts of triphenylmethane triisocyanate;

[0054] 3 parts flaxseed gum;

[0055] 4 parts of tris (butoxyethyl) phosphate;

[0056] Dispersant FT-78 0.8 parts;

[0057] 3 parts of cross-linking agent;

[0058] Accelerator 1 part;

[0059] 1.5 parts of antioxidant;

[0060] 0.4 parts of coupling agent.

[0061] The selection of crosslinking agent, coupling agent, accelerator and antioxidant in the above raw materials is shown in Table 1 below:

[0062] Table 1

[0063]

[0064]...

Embodiment 2

[0069] This embodiment relates to a high-performance viscous elastic sealant and a preparation method thereof. The sealant is composed of the following raw materials in parts by weight:

[0070] 48 parts of vinyl chloride-acrylate copolymers;

[0071] 34 parts of tert-butylphenolic tackifying resins;

[0072] 10 parts of illite powder with a particle size of 20 μm;

[0073] 3.5 parts of methylisothiazolinone;

[0074] 8 parts of fluff powder with a particle size of 15 μm;

[0075] 6.5 parts of triphenylmethane triisocyanate;

[0076] 3.5 parts of linseed gum;

[0077] 4.5 parts of tris (butoxyethyl) phosphate;

[0078] Dispersant FT-78 0.9 parts;

[0079] 3.5 parts of crosslinking agent;

[0080] Accelerator 1.2 parts;

[0081] 1.8 parts of antioxidant;

[0082] 0.45 parts of coupling agent.

[0083] The selection of crosslinking agent, coupling agent, accelerator and antioxidant in the above raw materials is shown in Table 2 below:

[0084] Table 2

[0085]

[...

Embodiment 3

[0092] This embodiment relates to a high-performance viscous elastic sealant and a preparation method thereof. The sealant is composed of the following raw materials in parts by weight:

[0093] 49 parts of vinyl chloride-acrylate copolymers;

[0094] 35 parts of tert-butylphenol-formaldehyde tackifying resins;

[0095] 11 parts of illite powder with a particle size of 25 μm;

[0096] 4 parts of methylisothiazolinone;

[0097] 9 parts of fluff powder with a particle size of 20 μm;

[0098] 7 parts of triphenylmethane triisocyanate;

[0099] 4 parts flaxseed gum;

[0100] 5 parts of tris (butoxyethyl) phosphate;

[0101] Dispersant FT-78 1 part;

[0102] 4 parts of crosslinking agent;

[0103] Accelerator 1.3 parts;

[0104] Antioxidant 2 parts;

[0105] 0.5 parts of coupling agent.

[0106] The selection of crosslinking agent, coupling agent, accelerator and antioxidant in the above raw materials is shown in Table 3 below:

[0107] table 3

[0108]

[0109] The ...

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Abstract

The invention discloses a preparation method of a high-performance viscous elastic sealant, wherein the preparation method comprises the following steps: taking vinyl chloride-acrylate copolymer and tert-butyl phenolic tackifying resin into a reaction kettle, then adding glycerol, carrying out mixing and stirring reaction, heating up and rising the temperature, adding triphenylmethane triisocyanate and an accelerant, and carrying out mixed reaction to obtain a mixture A; taking flaxseed gum and methylisothiazolinone, adding to the reaction kettle, then mixing and stirring, then adding tris(butoxyethyl) phosphate and a dispersant FT-78, and carrying out pressure and heat preservation mixing, to obtain a mixture B; and taking the mixture A and the mixture B, jointly adding to the reaction kettle, mixing and stirring, then adding illite powder, flocking powder and a coupling agent, carrying out stirring reaction, finally, adding an antioxidant and a crosslinking agent, and carrying out full reaction. The sealant has the advantages of simple and convenient preparation, fast surface drying speed, compact and stable cross-linking structure of an adhesive layer, good tensile bonding performance, flame retardancy, high and low temperature resistance, green and energy saving and environmental protection, wide application occasion fields and long service life.

Description

technical field [0001] The invention relates to the technical field of building sealant, in particular to a preparation method of high-performance viscous elastic sealant. Background technique [0002] At present, most of the building sealants commonly used at home and abroad are polyurethane sealants and silicone rubber sealants. The production process of polyurethane sealant is complicated, the equipment requirements are high, and the investment is large. Moreover, due to the use of moisture curing principle, the storage stability of polyurethane sealant is poor. If the airtightness is not strict or the temperature is slightly high, it is easy to cure and fail. Polyurethane sealants have weak adhesion to vinyl materials such as PVC, EVA, PE and other common building materials, and the bonding strength often fails to meet the requirements. In addition, because the residual isocyanate of polyurethane sealant is harmful to human body, it is not environmentally friendly and h...

Claims

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Application Information

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IPC IPC(8): C09J127/06C09J161/06C09J11/06C09J11/04
CPCC08L2201/02C08L2201/04C08L2201/08C08L2205/03C09J11/04C09J11/06C09J127/06C08L61/06C08K13/02C08K5/47C08K3/34C08K5/34924
Inventor 沈涛
Owner HEFEI LONGYANG AGRI TECH CO LTD
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