Composition of high flame retarding polyurethane foam, foam of the same, and thermal insulation material of the same

A technology of polyurethane and foam, applied in the direction of polyurea/polyurethane coatings, fireproof coatings, coatings, etc., can solve problems such as insufficient thickness, loss, poor effect, etc., to ensure construction and improve fire resistance flammability, quality improvement effect

CN107722213AInactive Publication Date: 2018-02-23DONGSUNG FINETEC CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-02-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a composition of high flame retarding polyurethane foam, foam of the same, and thermal insulation material of the same. The composition includes 100 parts by weight to 200 parts by weight an isocyanate compound relative to 100 parts by weight of a resin mixture including 46 wt % to 75 wt % of a polyol, 10 wt % to 30 wt % of a blowing agent, and 5 wt % to 30 wt % of an additive, wherein the polyol includes 1 wt % to 10 wt % of a polyether polyol and 45 wt % to 65 wt % of an aromatic polyester polyol, and the aromatic polyester polyol has an average hydroxyl value of 250mgKOH / g to 380 mgKOH / g. The invention also relates to highly flame retardant polyurethane spray foam, including a highly flame retardant polyurethane spray foam composition. The invention also relates to thermal insulation material, including the highly flame retardant polyurethane spray foam. The highly flame retardant polyurethane spray foam can improve the fire resistance and can ensure the application property at the same time.
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Description

technical field

[0001] The invention relates to a polyurethane spray foam composition, its foam and its heat insulating material. Background technique

[0002] It is known that polyurethane spray foam has excellent mechanical strength, dimensional stability, heat insulation performance, etc. and is easy to construct, so it is widely used in shipyards and construction sites as panels for construction and panels for refrigerated warehouses And liquefied natural gas (Liquefied Natural Gas, LNG), liquefied ethylene gas (Liquefied Ethylene Gas, LEG), liquefied petroleum gas (Liquefied Petroleum Gas, LPG) and other raw materials for gas tank insulation.

[0003] Commonly used polyurethane (polyurethane) spray foaming body in the past is to carry out spray foaming by following method: prepare mixed polyether polyol, polyester polyol, foam stabilizer, catalyst, blowing agent (hydrofluorocarbon ( Hydrofluorocarbon (HFC) or Hydrochlorofluorocarbon (Hydrochlorofluorocarbon, HCFC)) and...

Examples

Embodiment 1 to Embodiment 3

[0082] A mixture of polyether polyol and aromatic polyester polyol is used as the polyol component. A blowing agent, a flame retardant, a foam stabilizer, and a catalyst are mixed into the polyol component to prepare a resin mixture. The foaming process is performed by stirring an isocyanate compound in the resin mixture.

[0083] In order to form polyurethane spray foam, a spray foam machine is used, the storage temperature of the mixture of polyol and isocyanate compound and the hose temperature are controlled to 40°C, the operating pressure is controlled to 1000psi, and the polyurethane The release time of the formate foam was set to 30 minutes.

[0084] Each composition of the polyurethane spray foam composition prepared according to said Example 1 to Example 3 is shown in Table 1 below.

experiment example 1

[0089] Experimental Example 1-Evaluation of physical properties of polyurethane spray foam corresponding to the composition of polyol

[0090] Evaluation of reactivity, free foam density, thermal conductivity, compressive strength, flame retardancy and Workability and the results are shown in Table 2 below.

[0091] [Table 2]

[0092]

[0093] (1) Determination of reactivity (CT / TFT)

[0094] After stirring the hardener in the polyurethane spray foam composition, measure the time until the stock solution turns milky white and start to foam, and record it as the emulsification time (cream time, CT).

[0095] On the other hand, the time until the stickiness of the surface of the polyurethane spray foam disappeared was measured, and this was recorded as a tack free time (TFT).

[0096] (2) Determination of free foam density

[0097] The density of a foam prepared by foaming the polyurethane spray foam composition was measured in a state where external hindrance was minimiz...

Embodiment 4 to Embodiment 6

[0112] The composition of the polyol and the average hydroxyl group of the aromatic polyester polyol are controlled in a different manner. In addition, polyurethane spray foaming is prepared by the same method as in the above-mentioned Examples 1 to 3. body composition.

[0113] Each composition of the polyurethane spray foam composition prepared according to said Example 4 to Example 6 is shown in Table 4 below.