A long-acting ultra-high flame-retardant efficiency polypropylene flame retardant

Abstract

The present application relates to a kind of not to precipitate long-acting superhigh flame-retardant efficiency propylene flame retardant, including flame retardant T-DOPO and polybucum, the content of flame retardant T-DOPO is 50%-90%, the content of polybucum is 10%-50%, by the flame retardant in the present application is added into propylene material, propylene can reach B1 grade flame-retardant effect, and propylene is stronger in the process of spinning, and inorganic salt crystal cannot be precipitated.

Description

Technical Field

[0001] This invention relates to the technical field of flame retardants for polypropylene fibers, and specifically to a non-exuding, long-lasting, ultra-high flame retardant efficiency polypropylene flame retardant. Background Technology

[0002] Polypropylene polymer fiber materials are increasingly widely used in people's lives. However, most organic polymer materials are flammable in air. To realize their application in various industries such as military, aerospace, transportation, power, and civilian use, flame-retardant modification has become a new research direction. Traditional flame-retardant masterbatches are used in injection molding and sheet materials, which can meet the needs of most production processes. However, when applied to polypropylene fibers to produce carpets, clothing fabrics, and curtains, there are still many problems. The spinning temperature of polypropylene is generally 220-280℃, and high-temperature decomposition is severe. At the same time, polypropylene materials generally have a low melt index, making them difficult to spin.

[0003] Therefore, further improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a long-lasting, ultra-high flame retardant for polypropylene that does not precipitate. When added to polypropylene after processing, it can ensure the flame retardancy of polypropylene, improve the spinnability of polypropylene, and does not precipitate inorganic salt crystals.

[0005] The objective of this invention is achieved as follows:

[0006] A non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant, comprising flame retardant T-DOPO and polymethyl methacrylate, wherein the content of flame retardant T-DOPO is 50%-90% and the content of polymethyl methacrylate is 10%-50%.

[0007] The flame retardant T-DOPO has the chemical formula shown in (1-1):

[0008]

[0009] The polymerized initiator is a non-precipitating high-polymerization initiator generated by polymerization of polymerized initiator.

[0010] The non-exudating, long-lasting, ultra-high flame-retardant polypropylene flame retardant is used for polypropylene filaments and staple fibers.

[0011] The non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant can be used in drawing and spinning processes.

[0012] The amount of the non-exuding long-lasting ultra-high flame retardant added to polypropylene is 0.6%-1%, so that the polypropylene with the non-exuding long-lasting ultra-high flame retardant added meets at least the B1 flame retardant standard.

[0013] The flame retardant T-DOPO content is 70%, and the polydimethyl ether content is 30%.

[0014] The flame retardant T-DOPO content is 90%, and the polydimethyl ether content is 10%.

[0015] The beneficial effects of this invention are:

[0016] By adding the flame retardant of the present invention to polypropylene material, polypropylene can achieve a flame retardant effect of B1 level. Moreover, polypropylene has strong spinnability during the filamentation process and will not precipitate inorganic salt crystals. Detailed Implementation

[0017] The present invention will be further described below with reference to embodiments.

[0018] First Embodiment

[0019] This invention provides a long-lasting, ultra-high flame-retardant polypropylene flame retardant, including flame retardant T-DOPO and polymethyl methacrylate. The content of flame retardant T-DOPO is 50%-90%, and the content of polymethyl methacrylate is 10%-50%. By adding the flame retardant of this invention to polypropylene materials, polypropylene can achieve a B1 level flame retardant effect. Moreover, polypropylene has strong spinnability during the filamentation process and will not precipitate inorganic salt crystals.

[0020] Furthermore, the flame retardant T-DOPO has a compound with the chemical formula shown in (1-1):

[0021]

[0022] Furthermore, poly-linked urethane is a high-polymerization initiator that does not precipitate, generated by the polymerization of poly-linked urethane.

[0023] Furthermore, a non-precipitating, long-lasting, ultra-high flame-retardant polypropylene flame retardant can be used for polypropylene filaments and staple fibers.

[0024] Furthermore, non-precipitating, long-lasting, ultra-high flame-retardant polypropylene flame retardants can be used in drawing and spinning processes.

[0025] Furthermore, the amount of non-exuding long-lasting ultra-high flame retardant added to polypropylene is 0.6%-1%, so that the polypropylene with the non-exuding long-lasting ultra-high flame retardant meets at least the B1 flame retardant standard.

[0026] Furthermore, the content of flame retardant T-DOPO is 70%, and the content of polydimethyl ether is 30%.

[0027] Second Embodiment

[0028] The difference between this embodiment and the first embodiment is that the content of the flame retardant T-DOPO in this non-precipitating long-lasting ultra-high flame retardant polypropylene flame retardant is 90%, and the content of the polydimethylsiloxane is 10%.

[0029] The remaining undescribed parts are the same as in the first embodiment and will not be repeated here.

[0030] The following is a comparison table of polypropylene spinning performance tests:

[0031]

[0032] The experimental data from the different embodiments and traditional flame retardant masterbatches in the table show that by adding the functional masterbatch of the present invention to the polypropylene material, the polypropylene can achieve a flame retardant effect of B1 level, and the polypropylene has strong spinnability during the spinning process.

[0033] The above embodiments are merely preferred embodiments of the present invention, and the present invention may have other implementations. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope set forth in the claims of this application.

Claims

1. A non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant, characterized in that, Including flame retardant T-DOPO and polycarboxylate; The amount of the non-exuding long-lasting ultra-high flame retardant added to polypropylene is 0.6%-1%, so that the polypropylene with the non-exuding long-lasting ultra-high flame retardant added meets at least the B1 flame retardant standard. The flame retardant T-DOPO content is 70%, and the polycarboxylate content is 30%, or the flame retardant T-DOPO content is 90%, and the polycarboxylate content is 10%. The Flame retardant T-DOPO has compounds with the chemical formula shown in (1-1): （1-1）。 2. The non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant according to claim 1, characterized in that, The polymerized initiator is a non-precipitating high-polymerization initiator generated by polymerization of polymerized initiator.

3. The non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant according to claim 1, characterized in that, The non-exudating, long-lasting, ultra-high flame-retardant polypropylene flame retardant is used for polypropylene filaments and staple fibers.

4. The non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant according to claim 1, characterized in that, The non-exuding, long-lasting, ultra-high flame-retardant polypropylene flame retardant can be used in drawing and spinning processes.

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