TWI773976B - Halogen-free fireproof foam composition and halogen-free fireproof foam - Google Patents

Abstract

A halogen-free fireproof foam composition comprises at least one polyoxypropylene glycol, a crosslinking agent, melamine powder, a catalyst and a stabilizer. The halogen-free fireproof foam made by the halogen-free fireproof foam composition of the present invention is halogen-free, has fireproof performance, does not produce bad smell and has good support.

Description

Halogen-free fireproof foam composition and halogen-free fireproof foam

The present invention relates to a foam composition and foam, in particular to a halogen-free fireproof foam composition and fireproof foam.

Foam has the advantages of resilience and light weight, and can be widely used in transportation, furniture, packaging, fabrics, thermal insulation materials, sports equipment, footwear, refrigerated storage containers and pipeline insulation. In response to the needs of various applications, various functional foams have also been developed, such as conductive foam, sound-absorbing foam, anti-static foam, fire-proof foam, etc.

Most of the existing fireproof foams are prepared by mixing halogen-containing flame retardants with foam-forming raw materials, and then reacting. However, the presence of halogen-containing flame retardants will not only make the fireproof foam produce an unpleasant odor, but also make the foam's support worse. From this, it can be seen that the industry still needs to carry out research and development towards halogen-free fireproof foam.

Therefore, the first object of the present invention is to provide a halogen-free fireproof foam composition.

Thus, the halogen-free fireproof foam composition of the present invention comprises at least one polyoxypropylene glycol (PPG), a crosslinking agent, a melamine powder, a catalyst and a stabilizer.

The second object of the present invention is to provide a halogen-free fireproof foam.

The halogen-free fireproof foam of the present invention is prepared from the above-mentioned halogen-free fireproof foam composition.

The effect of the present invention is that: the halogen-free fireproof foam composition of the present invention contains polyoxypropylene glycol and melamine powder, so that the halogen-free fireproof foam obtained subsequently has good fireproof performance. The halogen-free fireproof foam composition of the present invention does not contain any reagents containing halogen atoms, so the halogen-free fireproof foam prepared subsequently will not produce bad odor and has good support.

The content of the present invention is described in detail below:

In the halogen-free fireproof foam composition of the present invention, the "polyoxypropylene glycol" comprises unmodified polyoxypropylene glycol and modified polyoxypropylene glycol; wherein, the modified polyoxypropylene glycol Oxypropylene glycol generally refers to any polymer containing polyoxypropylene glycol segments, such as, but not limited to, ethylene oxide-modified polyoxypropylene glycol, alkylated polyoxypropylene glycol, and the like.

Preferably, the number average molecular weight of the at least one polyoxypropylene glycol ranges from 700 to 5000.

Preferably, the halogen-free fireproof foam composition comprises two kinds of polyoxypropylene glycol, and the total weight of the polyoxypropylene glycol is 100 wt%, and the amount of one kind of polyoxypropylene glycol A is 50%. ~70 wt%, and another polyoxypropylene glycol B was used in an amount ranging from 30 to 50 wt%.

When the halogen-free fireproof foam composition comprises polyoxypropylene glycol A and polyoxypropylene glycol B, the number-average molecular weight of the polyoxypropylene glycol A is 1600, and the hydroxyl value is 110 mgKOH/g (such as Japan's Mitsui ACTCOL LR-00 sold by a chemical company; and the number-average molecular weight of the polyoxypropylene glycol B was 3000. More preferably, with the total weight of this polyoxypropylene glycol be 100 wt%, the consumption scope of this polyoxypropylene glycol A is 50～70 wt%, and the consumption scope of this polyoxypropylene glycol B is 30～70 wt%. 50 wt%. In a specific example of the present invention, the range of the amount of the polyoxypropylene glycol A is 50 wt %, and the range of the amount of the polyoxypropylene glycol B is 50 wt %.

Preferably, the crosslinking agent is a diisocyanate compound. The diisocyanate compound is, for example, but not limited to, diphenylmethane diisocyanate (MDI), toluene diisocyanate (TDI), and the like.

Such catalysts include, but are not limited to, metal salts (eg, tin octoate), amines (eg, triethylenediamine), dipropylene glycol, and the like. For example, the catalyst may be composed of 33 wt% triethylenediamine and 67 wt% dipropylene glycol, etc.

The stabilizer is, for example, but not limited to, silane and the like.

In the halogen-free fireproof foam composition of the present invention, the amount of the components contained can be adjusted according to subsequent applications. Preferably, the amount of the polyoxypropylene glycol is 100 parts by weight, the amount of the crosslinking agent is in the range of 0.3 to 0.5 parts by weight, the amount of the melamine powder is in the range of 0.2 to 0.4 parts by weight, and the amount of the catalyst is in the range of The amount of the stabilizer is 0.01 to 0.05 parts by weight, and the amount of the stabilizer is in the range of 0.1 to 0.2 parts by weight.

Preferably, the halogen-free fireproof foam composition further comprises water. Taking the amount of the polyoxypropylene glycol to be 100 parts by weight, the amount of the water is in the range of 0.1 to 0.4 parts by weight.

The halogen-free fireproof foam composition of the present invention can be simply composed of at least one polyoxypropylene glycol, crosslinking agent, melamine powder, catalyst and stabilizer; other additives, such as but not limited to antioxidants, can also be added according to subsequent needs , solvent (such as water), etc.

The halogen-free fireproof foam of the present invention is prepared from the above-mentioned halogen-free fireproof foam composition. Specifically, the halogen-free fire-resistant foam composition is obtained by reacting, and the conditions of the reaction are not particularly limited. Reference can be made to the process conditions generally used for making polyurethane foam. For example, the temperature range of the reaction is 20 to 45 ° C. , the reaction time ranged from 60 s to 120 s.

The halogen-free fireproof foam of the present invention can be used in various industries that require foam, such as furniture (sofa or bedding, etc.), car seats and the like.

The present invention will be further described with respect to the following examples, but it should be understood that the examples are only used for illustration and should not be construed as a limitation of the implementation of the present invention.

[ Example ] 50 parts by weight of polyoxypropylene glycol (purchased from Mitsui Chemicals, Japan, trade name ACTCOL LR-00; number average molecular weight is 1600) and 50 weight parts of polyoxypropylene glycol (number average molecular weight is 3000) for mixing to obtain 100 parts by weight of polyoxypropylene glycol. Next, 100 parts by weight of polyoxypropylene glycol, 0.4 parts by weight of crosslinking agent (MDI), 0.3 parts by weight of melamine, 0.03 parts by weight of catalyst (using triethylenediamine), 0.1 part by weight of stabilizer (using Silane) and 0.1 parts by weight of water are stirred and mixed at 25° C. and normal pressure to obtain a halogen-free fireproof foam composition. The above-mentioned halogen-free fireproof foam composition is placed in a mold, and at a temperature of 25 to 45 ° C, the reaction is carried out for about 60 to 120 seconds to obtain halogen-free fireproof foam.

[ Comparative Example ] The composition of the foam composition of the comparative example is similar to that of the halogen-free fireproof foam composition of the embodiment, except that the foam composition of the comparative example does not contain melamine powder. The foam of the comparative example was also produced according to the foam production process of the embodiment.

[ Test ] The following tests were performed on the halogen-free fireproof foam of the embodiment and the foam of the comparative example: 1. Halogen content test: according to the standard method of BS EN 14582 (2016), and the halogen-free foam of the embodiment was analyzed by ion chromatography Halogen (fluorine, chlorine, bromine, iodine) content of fireproof foam. The test results are as follows: Test items unit method detection limit result Halogen (Fluorine) (CAS no.14762-94-8) mg/kg 50 not detected Halogen (Chlorine) (CAS no.22537-15-1) mg/kg 50 not detected Halogen (Bromo) (CAS no.10097-32-2) mg/kg 50 not detected Halogen (Iodine) (CAS no.14362-44-5) mg/kg 50 not detected It can be seen from the results in the above table that no halogen content was detected in the fireproof foam of the example, which shows that the example is indeed a halogen-free fireproof foam. 2. Smouldering test: According to California 117-2013 Technical Bulletin, Filled Furniture Materials Smoldering Resistance Test-Section 3: Requirements, Procedures and Devices for Elastic Filling Materials The fireproof foam of the example and the foam of the comparative example were tested. The test results are as follows: Example judgement standard Sample 1 Sample 2 Sample 3 3.4.1a) Model test specimens smolder for a period of 45 minutes. no no no 3.4.1b) The carbonized length of the surface cloth exceeds 38 mm (1.5 in). no no no 3.4.1c) The model sample is transformed into an open flame. no no no 3.4.2. The elastic filler material passes the test if the three initial model samples pass the test, ie, the cigarette has burned through its full length and none of the model samples is smoldering. Yes 3.4.3. The test fails if more than one initial sample fails. Not applicable 3.4.4. If any of the three initial samples fails, repeat the test for the other three samples. Not applicable 3.4.5. The test is passed if all three additional samples pass the test. The test failed if any of the three additional samples failed. Not applicable From the results in the above table, it is proved that the halogen-free fireproof foam of the embodiment will not smolder, and at the same time, it is verified that the fireproof foam has fireproof performance. Comparative example judgement standard Sample 1 Sample 2 Sample 3 3.4.1a) Model test specimens smolder for a period of 45 minutes. Yes Yes Yes 3.4.1b) The carbonized length of the surface cloth exceeds 38 mm (1.5 in). Yes Yes Yes 3.4.1c) The model sample is transformed into an open flame. Yes Yes Yes 3.4.2. The elastic filler material passes the test if the three initial model samples pass the test, ie, the cigarette has burned through its full length and none of the model samples is smoldering. no 3.4.3. The test fails if more than one initial sample fails. Not tested 3.4.4. If any of the three initial samples fails, repeat the test for the other three samples. Not tested 3.4.5. The test is passed if all three additional samples pass the test. The test failed if any of the three additional samples failed. Not tested It can be seen from the above table results that although the foam composition of the comparative example contains polyoxypropylene glycol, it cannot achieve the fireproof effect because it does not contain melamine powder. It can be seen from the results of the above two tables that when the foam composition contains both propylene oxide diol and melamine powder, the obtained foam can have fire resistance.

To sum up, the halogen-free fireproof foam composition of the present invention contains at least one polyoxypropylene glycol and melamine powder, so that the halogen-free fireproof foam obtained subsequently has good fireproof performance. The halogen-free fire-resistant foam composition of the present invention does not contain any reagents containing halogen atoms, so that the halogen-free fire-resistant foam prepared subsequently will not produce bad odor and has good support, so the object of the present invention can indeed be achieved.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

Claims (8)

A halogen-free fireproof foam composition comprising: at least one polyoxypropylene glycol; cross-linking agent; melamine powder; catalyst; and stabilizer. The halogen-free fireproof foam composition according to claim 1, wherein the number average molecular weight of the at least one polyoxypropylene glycol ranges from 700 to 5000. The halogen-free fire-resistant foam composition according to claim 1, wherein, taking the amount of the polyoxypropylene glycol as 100 parts by weight, the amount of the crosslinking agent in the range of 0.3 to 0.5 parts by weight, the amount of the melamine powder The range is 0.2-0.4 parts by weight, the amount of the catalyst is in the range of 0.01-0.05 parts by weight, and the amount of the stabilizer is in the range of 0.1-0.2 parts by weight. The halogen-free fireproof foam composition according to claim 1, comprising polyoxypropylene glycol A and polyoxypropylene glycol B, wherein the polyoxypropylene glycol A has a number-average molecular weight of 1600, and a hydroxyl value of 110 mgKOH/g; and the number-average molecular weight of the polyoxypropylene glycol B was 3000. The halogen-free fireproof foam composition as claimed in claim 4, wherein, with the total weight of the polyoxypropylene glycol being 100 wt%, the amount of the polyoxypropylene glycol A used ranges from 50 to 70 wt%, and The dosage range of the polyoxypropylene glycol B is 30-50 wt%. The halogen-free fireproof foam composition according to claim 1, further comprising water. The halogen-free fire-resistant foam composition according to claim 6, wherein the amount of the polyoxypropylene glycol is 100 parts by weight, and the amount of the water is in the range of 0.1 to 0.4 parts by weight. A halogen-free fireproof foam is prepared from the halogen-free fireproof foam composition according to any one of claims 1 to 7.