WO2020206689A1 - Flame-retarding composition and preparation method thereof, artificial turf fiber, adhesive for artificial turf, and artificial turf - Google Patents

Abstract

The present application relates to the technical field of artificial turf, and specifically relates to a flame-retarding composition and a preparation method thereof, and to an artificial turf fiber, an adhesive for artificial turf, and artificial turf. The flame-retarding composition of the present invention comprises the following components in parts by mass: 10 to 30 parts of a nitrogen-containing flame retardant, 40 to 60 parts of a bromine-containing flame retardant, 5 to 10 parts of auxiliary flame retardant A, and 1 to 3 parts of auxiliary flame retardant B, the nitrogen-containing flame retardant being a melamine cyanurate, the bromine-containing flame retardant being any one of decabromodiphenyl ethane, octabromo ether, and ethylenebistetrabromo-phthalimide, auxiliary flame retardant A being antimony trioxide or sodium antimonide, and auxiliary flame retardant B being 2,3-dimethyl-2,3-diphenylbutane. The flame-retarding composition of the present invention has a good flame-retarding effect. Use of the composition for flame retardation of artificial turf fiber can achieve a self-extinguishing function of the artificial turf fiber once removed from an ignition source, and allows the artificial turf fiber to maintain a good anti-aging and good mechanical properties.

Description

Flame-retardant composition and preparation method thereof, artificial turf silk, artificial turf back glue and artificial turf Technical field

The invention relates to the technical field of artificial turf, in particular to a flame-retardant composition and a preparation method thereof, artificial turf silk, artificial turf gum and artificial turf.

Background technique

The flame retardancy of artificial grass yarn in artificial turf is generally achieved by adding nitrogen and phosphorus intumescent flame retardants, phosphate ester flame retardants or hindered amine flame retardants. This kind of flame retardant has some problems in the production and practical application: the flame retardant grade is low and the density is high, and the flame retardant effect cannot be achieved after a long period of burning. In addition, artificial grass yarns with this type of flame retardant will have the problem of a sharp decline in mechanical properties and anti-aging properties.

The flame retardancy of artificial turf glue is generally achieved by adding inorganic flame retardants such as AI(OH) ₃ , Mg(OH) ₃ , Sb ₂ O _3, etc. However, the use of such flame retardants is difficult to control because of their dispersibility. There will still be problems of low flame retardant grade, poor flame retardant effect, and easy to cause heavy metal pollution.

Summary of the invention

The purpose of the present invention is to provide a flame-retardant composition, which can achieve self-extinguishing effect from fire when used for artificial grass yarn.

The second object of the present invention is to provide a method for preparing the above-mentioned flame-retardant composition.

The third object of the present invention is to provide an artificial grass yarn.

The fourth object of the present invention is to provide an artificial turf adhesive.

The fifth object of the present invention is to provide an artificial lawn.

In order to achieve the above objective, the technical solution of the present invention is:

A flame retardant composition comprising the following components in parts by mass: 10-30 parts of nitrogen-containing flame retardant, 40-60 parts of bromine-containing flame retardant, 5-10 parts of auxiliary flame retardant A, auxiliary flame retardant 1-3 parts of agent B, the nitrogen-containing flame retardant is melamine cyanurate, and the bromine-containing flame retardant is decabromodiphenylethane, octabromoether, and ethylene bistetrabromophthaloyl Any one of imines, the auxiliary flame retardant A is antimony trioxide or sodium antimonide, and the auxiliary flame retardant B is 2,3-dimethyl-2,3-diphenylbutane .

The above flame-retardant composition further includes 15-30 parts of polyethylene.

The preparation method of the above flame-retardant composition is obtained by mixing the nitrogen-containing flame retardant, the bromine-containing flame retardant, the auxiliary flame retardant A, and the auxiliary flame retardant B uniformly and then granulating at 200-300°C.

An artificial grass yarn comprising the flame retardant composition described above.

The above-mentioned artificial turf yarn is prepared from the following mass percentage of raw materials: 70-80% of the base material, 5-20% of the flame retardant composition, 10-15% of the auxiliary agent; the base material is polypropylene or polyethylene; Additives include color masterbatch, anti-aging masterbatch, lubricant.

The mass ratio of the color masterbatch, anti-aging masterbatch and lubricant is 4-8:2-4:1-2.

The lubricant is PPA.

The above-mentioned artificial grass yarn is obtained by mixing the substrate, the flame-retardant composition, and the auxiliary agent, and then extruding and drawing the yarn at 200-300°C.

An artificial turf back glue comprises styrene butadiene glue and the above flame retardant composition, and the mass ratio of the styrene butadiene glue and the flame retardant composition is 100:10-30.

An artificial turf, comprising the above artificial grass yarn.

The artificial turf further includes a base cloth and an adhesive, and the adhesive is the above-mentioned artificial turf adhesive.

The artificial turf further includes a base fabric and an adhesive, the adhesive is made by mixing PU glue and a flame-retardant composition for PU glue in a mass ratio of 100:10 to 30; the flame-retardant PU glue The composition is composed of the following components in parts by mass: 40 to 80 parts of polyether polyol, 40 to 60 parts of isocyanate, and 100 to 300 parts of halogen-free flame retardant.

The molecular weight of the polyether polyol is 3000-8000, and the halogen-free flame retardant is Mg(OH) ₂ or AI(OH) ₃ .

Preferably, the molecular weight of the polyether polyol is 3000.

Preferably, the isocyanate is Yantai Wanhua PM200 isocyanate.

The preparation method of the above artificial turf includes the following steps:

1) Tuft the artificial turf silk on the base cloth through a tufting machine to obtain an artificial turf carpet;

2) Apply an adhesive on the back of the artificial turf carpet, and then dry it to obtain an artificial turf.

The flame-retardant composition of the present invention contains melamine cyanurate in its components. Melamine cyanurate has the advantages of smoke suppression, low toxicity, non-corrosion, stability to heat and ultraviolet rays, and good flame retardant effect. The acid salt can generate coke on the surface of the flame-retardant material and undergo the process of coke foaming during combustion to form an intumescent coke protective layer with flame-retardant properties. The carbonized layer forms a barrier layer with excellent performance in the polymer and combustion zone. Limit the heat release rate and oxygen supply, protect the flame-retardant materials from further burning, and minimize the amount of smoke, toxic gas and corrosive gas. In addition, melamine cyanurate generates nitrogen when it burns, which dilutes it. Due to the concentration of the combustible gas generated by the decomposition of oxygen and polymer compounds, a part of the heat is taken away due to gas generation and thermal convection, which slows down the combustion speed and achieves flame retardancy; the flame retardant composition of the present invention contains decabromodiphenyl ethane Bromine-based flame retardants such as octabromoether or ethylene bis-tetrabromophthalamide. Due to the low bond energy of the C-Br bond, the decomposition temperature is 200～300℃, and the bromine-based flame retardant when the polymer is decomposed The agent also begins to decompose, and can capture the free radicals when the polymer material is decomposed, thereby delaying or inhibiting the reaction of the combustion chain. At the same time, the released HBr itself is a kind of flame-retardant gas, which can cover the surface of the material to prevent The effect of diluting the oxygen concentration; in addition, the flame retardant composition of the present invention also contains auxiliary flame retardants, and various components cooperate with each other to have a better flame retardant effect, and no toxic polybrominated polybrominated compounds are produced during thermal cracking or burning. Dibenzodioxane (PBDO) and polybrominated dibenzofuran (PBDF), fully comply with the requirements of European regulations on dioxins, do not cause harm to the environment, do not have any toxicity, and will not cause any biological damage It is deformed, has no side effects on aquatic organisms such as fish, and meets environmental protection requirements.

The artificial grass yarn prepared by using the flame-retardant composition of the present invention can still achieve self-extinguishing after being burnt with a natural gas spray gun for 3 minutes, and the flame retardant grade reaches the British BS-476-3 AB level standard of the United Kingdom. The artificial turf yarn of the present invention maintains good mechanical properties and anti-aging performance. The color of the artificial turf yarn is stable and has no obvious change after 3000 hours of anti-aging test, which is less than gray card 4; the tensile strength test after aging is the same as that before aging. In comparison, the retention rate of breaking force is more than 90%.

detailed description

Example 1

The flame retardant composition of this embodiment includes the following components in parts by mass: 20 parts of melamine cyanurate, 50 parts of decabromodiphenylethane, 10 parts of antimony trioxide, 2,3-dimethyl- 2 parts of 2,3-diphenylbutane.

The above flame-retardant composition also includes 18 parts of polyethylene.

The flame-retardant composition of this embodiment includes the following steps: adding melamine cyanurate, decabromodiphenylethane, antimony trioxide, 2,3-dimethyl-2, After mixing 3-diphenylbutane and polyethylene uniformly, use a twin-screw granulator to granulate at 250°C to obtain.

The artificial turf yarn of this embodiment is prepared from the following mass percentages of raw materials: 70% polyethylene base material, 20% of the above flame-retardant composition, 4% color masterbatch, 4% anti-aging masterbatch, 2% lubricant PPA .

The above-mentioned artificial grass yarn is obtained by mixing the polyethylene substrate, the flame-retardant composition, the color masterbatch, the anti-aging masterbatch, and the lubricant PPA according to the above-mentioned mass percentage, and then extruding and drawing at 200°C.

The artificial turf of this embodiment includes a base cloth, an adhesive, and the above-mentioned artificial turf yarn. The adhesive is an artificial turf back glue, and the artificial turf back glue is composed of styrene butadiene glue and a flame retardant composition. The mass ratio of the styrene-butadiene glue and the flame-retardant composition is 100:30, and the flame-retardant composition includes the following parts by mass: 20 parts of melamine cyanurate, 50 parts of decabromodiphenyl ethane , 10 parts of antimony trioxide, 2 parts of 2,3-dimethyl-2,3-diphenylbutane.

The preparation method of the artificial lawn of this embodiment includes the following steps:

1) Tuft the artificial turf silk on the base cloth through a tufting machine to obtain an artificial turf carpet;

2) Apply adhesive on the back of the artificial turf carpet, and then put it in an oven for drying to obtain an artificial turf.

Example 2

The flame retardant composition of this embodiment includes the following components in parts by mass: 30 parts of melamine cyanurate, 40 parts of octabromide, 5 parts of sodium antimonide, 2,3-dimethyl-2,3- 3 parts of diphenylbutane.

The above flame-retardant composition further includes 22 parts of polyethylene.

The preparation method of the flame retardant composition of this embodiment includes the following steps: according to the above-mentioned mass parts, melamine cyanurate, octabromo ether, sodium antimonide, 2,3-dimethyl-2,3-diphenyl After mixing butyl butane and polyethylene uniformly, use a twin-screw granulator to granulate at 200°C to obtain.

The artificial grass yarn of this embodiment is made from the following mass percentages of raw materials: 80% polypropylene base material, 10% of the above flame-retardant composition, 6% color masterbatch, 3% anti-aging masterbatch, 1% lubricant PPA .

The above-mentioned artificial grass yarn is obtained by mixing the polypropylene substrate, the flame-retardant composition, the color masterbatch, the anti-aging masterbatch, and the lubricant PPA according to the above-mentioned mass percentage, and then extruding and drawing at 260°C.

The artificial turf of this embodiment is composed of cloth, an adhesive and the above-mentioned artificial grass yarn. The adhesive is an artificial turf back glue, and the artificial turf back glue is composed of styrene butadiene glue and a flame retardant composition. The mass ratio of the styrene-butadiene glue and the flame-retardant composition is 100:10, and the flame-retardant composition includes the following components in parts by mass: 30 parts of melamine cyanurate, 40 parts of octabromide, antimonization 5 parts of sodium and 3 parts of 2,3-dimethyl-2,3-diphenylbutane.

The preparation method of the artificial lawn of this embodiment includes the following steps:

1) Tuft the artificial turf silk on the base cloth through a tufting machine to obtain an artificial turf carpet;

2) Apply adhesive on the back of the artificial turf carpet, and then put it in an oven for drying to obtain an artificial turf.

Example 3

The flame retardant composition of this embodiment includes the following components in parts by mass: 10 parts of melamine cyanurate, 60 parts of ethylene bistetrabromophthalimide, 8 parts of sodium antimonide, 2,3 -1 part of dimethyl-2,3-diphenylbutane.

The above flame-retardant composition further includes 21 parts of polyethylene.

The flame-retardant composition of this embodiment is granular, and its preparation method includes the following steps: according to the above-mentioned mass parts, melamine cyanurate, ethylenebistetrabromophthalimide, sodium antimonide, 2, After mixing 3-dimethyl-2,3-diphenylbutane and polyethylene uniformly, use a twin-screw granulator to granulate at 300°C to obtain.

The artificial turf yarn of this embodiment is made from the following mass percentages of raw materials: 78% polypropylene base material, 10% flame retardant composition, 8% color masterbatch, 2% anti-aging masterbatch, 2% lubricant PPA .

The above-mentioned artificial grass yarn is obtained by mixing the polypropylene substrate, the flame-retardant composition, the color masterbatch, the anti-aging masterbatch, and the lubricant PPA according to the above-mentioned mass percentages, and then extruding and drawing at 220°C.

The artificial turf of this embodiment includes a base cloth, an adhesive, and the above-mentioned artificial grass yarn. The adhesive is made by mixing PU glue and a flame-retardant composition for PU glue at a mass ratio of 100:10; the PU The flame retardant composition for glue is composed of the following parts by mass: 80 parts of polyether polyol (molecular weight 3000), 40 parts of Yantai Wanhua PM200 isocyanate, and ₂ 100 parts of Mg(OH).

The preparation method of the artificial lawn of this embodiment includes the following steps:

1) Tuft the artificial turf silk on the base cloth through a tufting machine to obtain an artificial turf carpet;

2) Apply an adhesive on the back of the artificial turf carpet to shape it, and then put it in an oven for drying to obtain an artificial turf.

Example 4

The flame retardant composition used in this embodiment includes the following components in parts by mass: 20 parts of melamine cyanurate, 44 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2,3-dimethyl -2,3-Diphenylbutane 1 part.

The above flame-retardant composition further includes 30 parts of polyethylene.

The flame-retardant composition of this embodiment includes the following steps: adding melamine cyanurate, decabromodiphenylethane, antimony trioxide, 2,3-dimethyl-2, After mixing 3-diphenylbutane and polyethylene uniformly, use a twin-screw granulator to granulate at 260°C to obtain.

The artificial turf yarn of this embodiment is prepared from the following mass percentages of raw materials: 70% polyethylene base material, 20% of the above flame-retardant composition, 4% color masterbatch, 4% anti-aging masterbatch, 2% lubricant PPA .

The artificial grass yarn is obtained by mixing the polyethylene base material, the flame-retardant composition, the color masterbatch, the anti-aging masterbatch, and the lubricant PPA according to the above-mentioned mass percentage, and then extruding and drawing at 300°C.

The artificial turf of this embodiment includes a base cloth, an adhesive, and the above-mentioned artificial grass yarn. The adhesive is made by mixing PU glue and a flame-retardant composition for PU glue at a mass ratio of 100:30; the PU The flame retardant composition for glue is composed of the following parts by mass: 40 parts of polyether polyol (molecular weight 8000), 60 parts of Yantai Wanhua PM200 isocyanate, and ₂ 300 parts of Al(OH).

The preparation method of the artificial lawn of this embodiment includes the following steps:

1) Tuft the artificial turf silk on the base cloth through a tufting machine to obtain an artificial turf carpet;

2) Apply an adhesive on the back of the artificial turf carpet to shape it, and then put it in an oven for drying to obtain an artificial turf.

Experimental example

1) Flame-retardant performance test: the artificial turf in Examples 1-4 was continuously burned with a natural gas spray gun. The artificial turf in Examples 1-4 was able to achieve self-extinguishing after burning for 3 minutes, and penetrated the lawn. After the flame retardant effect is still maintained, the flame retardant grade can reach the British BS-476-3AB standard.

2) Test the mechanical properties and anti-aging properties of the artificial grass yarns in Examples 1-4 according to the national standard method. The aging test conditions are as follows: the total test time is 3000 hours, the experimental equipment: the United States QUV/SPRAY, the total irradiation: 2267W/㎡ , Test procedure: Illumination intensity 0.68W/㎡, 55°C light for 4 hours ←→45°C condensation for 2 hours; during the test, samples of 1500 hours and 3000 hours of aging are retained to test the color and drawing of the samples left by artificial grass silk Breaking force, the experimental results are shown in Table 1. The retention of tensile force is the ratio of the tensile force after aging to the tensile force before aging.

Table 1 Tensile strength test and color change of artificial turf silk before and after aging in Examples 1-4

The experimental results show that the color of the grass silk has no obvious change under the xenon lamp for 3000 hours, which is less than the gray card level 4. The tensile force is tested after aging, and the retention rate of the tensile force is above 90% compared with that before aging.

For those skilled in the art, various other corresponding changes and deformations can be made based on the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (10)

1. A flame retardant composition comprising the following components in parts by mass: 10-30 parts of nitrogen-containing flame retardant, 40-60 parts of bromine-containing flame retardant, auxiliary flame retardant A 5-10 parts, auxiliary flame retardant B 1 to 3 parts, the nitrogen-containing flame retardant is melamine cyanurate, and the bromine-containing flame retardant is decabromodiphenylethane, octabromoether, and ethylene bistetrabromophthalimide Any one of amines, the auxiliary flame retardant A is antimony trioxide or sodium antimonide, and the auxiliary flame retardant B is 2,3-dimethyl-2,3-diphenylbutane.
2. The flame-retardant composition of claim 1, wherein the flame-retardant composition further comprises 15-30 parts of polyethylene.
3. A method for preparing the flame retardant composition according to any one of claims 1-2, comprising the following steps: combining nitrogen-containing flame retardant, bromine-containing flame retardant, auxiliary flame retardant A, auxiliary flame retardant B It is obtained by granulating at 200～300℃ after mixing uniformly.
4. An artificial grass yarn, which is characterized by comprising the flame-retardant composition according to any one of claims 1-2.
5. The artificial grass yarn according to claim 4, characterized in that it is prepared from the following mass percentages of raw materials: 70-80% of the base material, 5-20% of the flame retardant composition, 10-15% of the auxiliary agent; The material is polyethylene or polypropylene; the additives include color masterbatch, anti-aging masterbatch and lubricant.
6. An artificial turf back glue, which is characterized by comprising styrene butadiene glue and the flame retardant composition of claim 1, and the mass ratio of the styrene butadiene glue and the flame retardant composition is 100:10-30.
7. An artificial turf, characterized in that it comprises the artificial grass yarn according to any one of claims 4-5.
8. The artificial turf according to claim 7, characterized in that it further comprises a base cloth and an adhesive, and the adhesive is the artificial turf back adhesive of claim 6.
9. The artificial turf according to claim 7, characterized in that it further comprises a base cloth and an adhesive, the adhesive is made by mixing PU glue and a flame-retardant composition for PU glue in a mass ratio of 100:10-30 The flame retardant composition for PU glue is composed of the following components in parts by mass: 40 to 80 parts of polyether polyol, 40 to 60 parts of isocyanate, and 100 to 300 parts of halogen-free flame retardant.
10. The artificial turf according to claim 9, wherein the molecular weight of the polyether polyol is 3000-8000, and the halogen-free flame retardant is Mg(OH) ₂ or AI(OH) ₃ .