Incombustible dual-component polyurethane foam sealant, preparation method thereof, and canned sealant

A technology of two-component polyurethane and foam caulking agent, which is applied in its preparation and the field of polyurethane-containing caulking agent, which can solve problems such as propellant explosion, and achieve the effect of fast curing speed and good mechanical strength

Active Publication Date: 2016-06-15
江西合盛安泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the propellant filled in the tank often poses a risk of explosion

Method used

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  • Incombustible dual-component polyurethane foam sealant, preparation method thereof, and canned sealant
  • Incombustible dual-component polyurethane foam sealant, preparation method thereof, and canned sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Two-component polyurethane non-combustible grade foam caulk

[0034] The caulking agent is composed of component A and component B. The preparation of component A: take polyester polyol SKR-240B (manufactured by Skerui Polyurethane Material Co., Ltd., hydroxyl value 240±10) at a room temperature of 20°C 100 parts by mass, 30 parts by mass of fluorodichloroethane, 15 parts by mass of DMMP, 25 parts by mass of TCEP, 2 parts by mass of silicone oil, 10.6 parts by mass of catalyst PC-4, 0.9 parts by mass of catalyst DMP-30, 0.3 parts by mass of pentamethyldiethylenetriamine After mixing at high speed for 1 minute at 1500 rpm, 80 parts by mass of potassium silicate (solid content above 98%) and 13 parts by mass of chlorinated paraffin were added, and stirred at high speed for 30 minutes.

[0035] B component: isocyanate PM-200.

Embodiment 2

[0036] Example 2: Caulk in a Jar

[0037] For the tank structure used see figure 1 .

[0038] Put the caulking agent prepared in Example 1 in a 900mL metal tank 4 (aluminum alloy tank), put A component in A capsule 2, put B component in B capsule 3, and connect the outlets of A capsule and B capsule to the outlet pipe , the outlet pipeline is provided with a push-type valve 6; 130mL propane butane is installed in the metal tank wall, A capsule and B capsule.

[0039] See figure 2 , two spheres are filled in the outlet of A capsule and the outlet of B capsule respectively in the push-type valve 6 . Press the valve to spray out component A and component B at the same time (propane butane does not spray out, it plays the role of squeezing the capsule).

[0040] Capsule A and Capsule B are soft capsules made of nitrile rubber.

[0041] Wherein, the outlet aperture of capsule A is 1 mm, and the outlet aperture of capsule B is 1.8 mm, which are respectively connected to two in...

Embodiment 3

[0044] The joint filler prepared in Example 2 was sprayed on the surface of the cement base material, and immediately foamed in 3 seconds, rapidly increased in size, solidified in 10 minutes, and reached working hardness in 4 hours, and then the performance test could be performed. Spray the caulking agent on the surface of wood and metal products, and test the performance of caulking after drying respectively.

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Abstract

The invention provides an incombustible dual-component polyurethane foam sealant. The sealant comprises a component A and a component B, and the component A comprises, by mass, 100 parts of polyester polyol, 28-32 parts of dichlorofluoroethane, 14-18 parts of dimethyl methyl phosphate, 20-30 parts of tris(2-carboxyethyl)phosphine, 2 parts of silicone oil, 1-2 parts of a catalyst, 0.2-0.4 parts of pentamethyldiethylenetriamine, 70-90 parts of potassium silicate and 10-15 parts of chlorinated paraffin. The sealant has the advantages of fast solidifying speed after sealing, and good mechanical strength, and is an incombustible foam material.

Description

technical field [0001] The invention belongs to the field of sealing materials, and in particular relates to a polyurethane-containing caulking agent and its preparation. Background technique [0002] Polyurethane foam caulk is a one-component, moisture-curing, multi-purpose polyurethane foam-filled elastomeric sealing material. Polyurethane foam sealant is a special polyurethane product filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure-resistant aerosol can. During construction, the aerosol colloid is sprayed to the site to be constructed through a matching sizing gun or manual nozzle, and the forming, foaming, bonding and sealing processes are completed in a short period of time. Its cured foam elastomer has excellent properties such as bonding, waterproof, thermal expansion and contraction resistance, heat insulation, sound insulation and even flame retardant (limited to flame retardant type), and is widely used in the fillin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L91/06C08L83/04C08G18/66C08G18/42C08K3/34C08K5/521C08K5/50C08J9/14B65D81/32
CPCB65D81/3233C08G18/6651C08G2101/00C08J9/144C08J2203/162C08J2375/06C08J2491/06C08L75/06C08L2201/02C08L2203/14C08L2205/03C08L91/06C08L83/04C08K5/521C08K5/50C08K3/34
Inventor 杨京学宫连仲杨继彬杨丽玉
Owner 江西合盛安泰新材料有限公司
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