阅读说明：本技术 一种阻燃剂及其加工方法 (Fire retardant and processing method thereof ) 是由 徐留琦 于 2021-11-18 设计创作，主要内容包括：本发明涉及阻燃剂加工技术领域,更具体的说是一种阻燃剂及其加工方法；可以降低磷酸酯的粘度；该方法包括以下步骤：步骤一：首先将三聚氰胺晶体进行清洗,然后研磨成粉末；步骤二：把磷酸酯液体进行离心,使磷酸酯液体的粘度降低；步骤三：将三聚氰胺粉末均匀的洒在粘度降低之后的磷酸酯液体上,得到混合物；步骤四：对混合物进行搅拌,得到凝胶状的混合溶液,该混合溶液为阻燃剂；还使用一种阻燃剂加工装置,所述装置包括离心桶和分散孔,离心桶上均布有多个分散孔,离心桶能够围绕自身轴线旋转,离心桶内部设置有内芯,离心桶和内芯均为圆锥形结构；所述阻燃剂由以下体积份数的原料组成：三聚氰胺晶体10份；磷酸酯液体6份。(The invention relates to the technical field of flame retardant processing, in particular to a flame retardant and a processing method thereof; the viscosity of the phosphate ester can be reduced; the method comprises the following steps: the method comprises the following steps: firstly, washing melamine crystals, and then grinding the melamine crystals into powder; step two: centrifuging the phosphate ester liquid to reduce the viscosity of the phosphate ester liquid; step three: uniformly spraying melamine powder on the phosphate ester liquid with reduced viscosity to obtain a mixture; step four: stirring the mixture to obtain a gelatinous mixed solution, wherein the mixed solution is a flame retardant; the flame retardant processing device comprises a centrifugal barrel and a plurality of dispersion holes, wherein the plurality of dispersion holes are uniformly distributed on the centrifugal barrel, the centrifugal barrel can rotate around the axis of the centrifugal barrel, an inner core is arranged in the centrifugal barrel, and the centrifugal barrel and the inner core are both in a conical structure; the flame retardant consists of the following raw materials in parts by volume: 10 parts of melamine crystals; 6 parts of phosphate liquid.)

1. A processing method of a flame retardant is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: firstly, washing melamine crystals, and then grinding the melamine crystals into powder;

step two: centrifuging the phosphate ester liquid to reduce the viscosity of the phosphate ester liquid;

step three: uniformly spraying melamine powder on the phosphate ester liquid with reduced viscosity to obtain a mixture;

step four: the mixture was stirred to obtain a gel-like mixed solution, which was a flame retardant.

2. The method of processing flame retardant of claim 1, wherein: the flame retardant processing method also uses a flame retardant processing device which comprises a centrifugal barrel (001) and a plurality of dispersing holes (002), wherein the plurality of dispersing holes (002) are uniformly distributed on the centrifugal barrel (001), the centrifugal barrel (001) can rotate around the axis of the centrifugal barrel, an inner core (003) is arranged inside the centrifugal barrel (001), and the centrifugal barrel (001) and the inner core (003) are both in a conical structure.

3. The method of processing flame retardant of claim 2, wherein: the device still includes material pipe (005), mill (007) and dustcoat (009), and material pipe (005) are fixed on centrifuge bucket (001), are provided with mill (007) on material pipe (005), and dustcoat (009) cover is on mill (007) and centrifuge bucket (001), and material pipe (005) upper end rotates there is connector (006).

4. The method of claim 3, wherein: spiral grains (008) are arranged on the inner wall of the outer cover (009).

5. The method of claim 4, wherein: the centrifugal barrel (001) is provided with a scraping blade (004), and the scraping blade (004) is in contact with the inner wall of the outer cover (009).

6. The method of processing flame retardant of claim 5, wherein: the device also comprises a stirring rod (013) and a mixing barrel (014), wherein the stirring rod (013) can rotate in the mixing barrel (014), and the stirring rod (013) is fixed at the bottom end of the centrifugal barrel (001).

7. The method of claim 6, wherein: the device also comprises a gear ring (010), a gear (011) and a circular plate (012), wherein the gear ring (010) is fixed on the material pipe (005), the gear (011) is meshed with the gear ring (010), and the material pipe (005) rotates on the circular plate (012).

8. The method of claim 7, wherein: the device further comprises a suspension arm (018) and a bolt (019), wherein the bolt (019) is in threaded connection with the suspension arm (018), and the suspension arm (018) is fixed on the outer cover (009).

9. The method of processing flame retardant of claim 8, wherein: the device also comprises a rotating arm (015), a screw rod (016) and a cross beam (017), wherein the rotating arm (015) rotates on the mixing barrel (014), the screw rod (016) rotates on the rotating arm (015), the cross beam (017) is in threaded connection with the screw rod (016), and the outer cover (009) is fixed on the cross beam (017).

10. A flame retardant processed by the method of claim 9, wherein: the flame retardant consists of the following raw materials in parts by volume: 10 parts of melamine crystals; 6 parts of phosphate liquid.

Technical Field

The invention relates to the technical field of flame retardant processing, in particular to a flame retardant and a processing method thereof.

Background

The flame retardant is a functional assistant for endowing inflammable polymer with flame resistance, and is mainly designed aiming at the flame retardance of high molecular materials. Organic flame retardants are represented by bromine, phosphorus nitrogen, red phosphorus and compounds, inorganic flame retardants are mainly antimony trioxide, magnesium hydroxide and aluminum hydroxide, organic nitrogen flame retardants such as triazine and derivatives thereof, melamine and the like have undesirable effects when used alone, but have synergistic effects when used in combination with phosphorus flame retardants, but phosphate esters in phosphorus flame retardants have high viscosity, and are difficult to uniformly mix together when melamine is used in combination.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a rubber preparation method which can reduce the viscosity of phosphate ester.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a method of processing a flame retardant, the method comprising the steps of:

the method comprises the following steps: firstly, washing melamine crystals, and then grinding the melamine crystals into powder;

step two: centrifuging the phosphate ester liquid to reduce the viscosity of the phosphate ester liquid;

step three: uniformly spraying melamine powder on the phosphate ester liquid with reduced viscosity to obtain a mixture;

step four: the mixture was stirred to obtain a gel-like mixed solution, which was a flame retardant.

The flame retardant processing method further adopts a flame retardant processing device which comprises a centrifugal barrel and dispersion holes, wherein the plurality of dispersion holes are uniformly distributed on the centrifugal barrel, the centrifugal barrel can rotate around the axis of the centrifugal barrel, an inner core is arranged in the centrifugal barrel, and the centrifugal barrel and the inner core are both in a conical structure.

The flame retardant processed by the flame retardant processing method is characterized in that: the flame retardant consists of the following raw materials in parts by volume: 10 parts of melamine crystals; 6 parts of phosphate liquid.

Drawings

The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a flow chart of a flame retardant processing method of the present invention;

FIG. 2 is a schematic view of the construction of the centrifugal barrel and the dispersion holes in the present invention;

FIG. 3 is a schematic structural view of a feed pipe and a grinding disc in the invention;

FIG. 4 is a schematic structural view of the outer cover and the spiral pattern according to the present invention;

FIG. 5 is a schematic view of the structure of the stirring rod and the mixing barrel of the present invention;

FIG. 6 is a schematic structural view of a connecting port and a material pipe in the present invention;

FIG. 7 is a schematic structural view of a screw and a cross beam according to the present invention;

FIG. 8 is a schematic view of the structure of the ring gear and the gear of the present invention;

FIG. 9 is a schematic cross-sectional view of a processing apparatus according to the present invention;

FIG. 10 is a schematic view of a processing apparatus according to the present invention.

In the figure: a centrifugal barrel 001; the dispersed pores 002; an inner core 003; a doctor blade 004; a feed pipe 005; a connection port 006; a grinding disc 007; spiral lines 008; an outer cover 009; a ring gear 010; a gear 011; a circular plate 012; a stir bar 013; a mixing barrel 014; a boom 015; a screw 016; a cross beam 017; boom 018; and bolts 019.

Detailed Description

A method of processing a flame retardant, the method comprising the steps of: the method comprises the following steps: firstly, washing melamine crystals, and then grinding the melamine crystals into powder; step two: centrifuging the phosphate ester liquid to reduce the viscosity of the phosphate ester liquid; step three: uniformly spraying melamine powder on the phosphate ester liquid with reduced viscosity to obtain a mixture; step four: stirring the mixture to obtain a gelatinous mixed solution, wherein the mixed solution is a flame retardant; the flame retardant processed by the processing method of the flame retardant comprises the following raw materials in parts by volume: 10 parts of melamine crystals; 6 parts of phosphate liquid; according to the invention, as shown in fig. 1, the melamine crystals are firstly cleaned, the melamine crystals are not water-soluble, so that dust and doped impurities on the surfaces of the melamine crystals can be cleaned away by using clean water during cleaning to obtain pure melamine crystals, then the melamine crystals are ground into powder, then the phosphate is centrifuged, the internal friction force is reduced by scattering phosphate molecular groups, so that the viscosity of the phosphate is reduced, meanwhile, the melamine powder is scattered on the phosphate with the reduced viscosity, and the phosphate and the melamine are mixed, so that the phosphate and the melamine are uniformly mixed together, and the flame retardant property after the melamine and the phosphate are matched can be improved.

Referring to fig. 2 and 3, one exemplary procedure by which a reduced viscosity for a phosphate ester liquid can be obtained is shown:

the phosphate liquid has uniform molecular groups in the phosphate liquid, but the internal friction is large, so the viscosity is high, and melamine powder is difficult to uniformly permeate into the phosphate liquid, so the flame retardant processing method also uses a flame retardant processing device which comprises a centrifugal barrel 001 and dispersion holes 002, the centrifugal barrel 001 is uniformly provided with the dispersion holes 002, the centrifugal barrel 001 can rotate around the axis of the centrifugal barrel 001, an inner core 003 is arranged in the centrifugal barrel 001, the centrifugal barrel 001 and the inner core 003 are both in a conical structure, the phosphate liquid is added into the centrifugal barrel 001, then the centrifugal barrel 001 rotates, the phosphate liquid is continuously thrown out from the fine dispersion holes 002 through centrifugal force, the molecular groups in the thrown phosphate liquid are relatively less and more dispersed, and the melamine powder is uniformly sprinkled in the thrown phosphate liquid at the moment, so that the melamine powder can be adhered to the surface of the thrown phosphate liquid, and then the phosphate liquid which is thrown out continuously and has melamine powder adhered to the nasal cancer surface is collected and mixed, thereby obtaining a gelatinous mixed solution of the melamine powder and the phosphate liquid which are uniformly mixed;

because the centrifugal barrel 001 and the inner core 003 are both conical structures, after the phosphate liquid enters the centrifugal barrel 001, the phosphate liquid is guided by the inner core 003 through the conical surface, so that the phosphate liquid is uniformly distributed in the centrifugal barrel 001, the phosphate liquid is ensured to be uniformly thrown out from the periphery of the centrifugal barrel 001 when the centrifugal barrel 001 rotates, and meanwhile, the situation that the phosphate liquid is not easily thrown out due to the formation of a rotational flow in the center inside the centrifugal barrel 001 is avoided; the conical surface of the centrifugal barrel 001 can guide the sprayed melamine powder to slide downwards along the taper of the conical surface, and when the melamine powder slides downwards and passes through the plurality of dispersing holes 002, the melamine powder is carried away by the phosphate liquid thrown out from the plurality of dispersing holes 002 and mixed.

With reference to fig. 3 and 4, one exemplary work process according to which melamine crystals can be ground into powder is shown:

the device also comprises a material pipe 005, a grinding disc 007 and an outer cover 009, wherein the material pipe 005 is fixed on the centrifugal barrel 001, the grinding disc 007 is arranged on the material pipe 005, the outer cover 009 is sleeved on the grinding disc 007 and the centrifugal barrel 001, and a connecting port 006 is rotatably arranged at the upper end of the material pipe 005; the material pipe 005 is connected and communicated with the centrifugal barrel 001, firstly, a phosphate liquid conveying pipeline is connected to the connecting port 006, so that phosphate liquid can be injected into the centrifugal barrel 001 through the material pipe 005, and the conveying pipeline is not driven to rotate when the material pipe 005 is driven to rotate by an external power source, so that the centrifugal barrel 001 rotates, the grinding disc 007 is driven to rotate while rotating, at the moment, melamine crystals are added into the melamine liquid through a gap between the outer cover 009 and the grinding disc 007, and the melamine crystals are extruded and rubbed between the outer cover 009 to be ground by guiding the inclined surface of the grinding disc 007, so that the ground melamine powder can finish the grinding of the melamine crystals and the effect of reducing the viscosity of the phosphate liquid under the same power source; the melamine ground into powder falls on the surface of the centrifugal barrel 001 below the grinding disc 007 and slides along the conical surface of the centrifugal barrel 001, and the conical surface of the centrifugal barrel 001 can prolong the sliding time of the melamine powder on the conical surface, so that the melamine powder is taken away by the phosphate liquid.

With reference to fig. 4 and 9, one exemplary operation according to which melamine crystals can be guided to be ground is shown:

the inner wall of the outer cover 009 is provided with the spiral grains 008, so after melamine crystals enter a gap between the outer cover 009 and the grinding disc 007, the melamine crystals can be continuously ground along with the rotation of the grinding disc 007, meanwhile, the spiral grains 008 can guide the melamine crystals to continuously move from top to bottom, and in the gap between the outer cover 009 and the grinding disc 007, the gap above is opened towards the opening below, so the melamine crystals are guided downwards from the gap between the outer cover 009 and the grinding disc 007, and can be ground into a powder state from a crystal particle state by the grinding disc 007, and downward thrust can be generated on the melamine crystals, and the melamine crystals are prevented from being blocked in the gap between the outer cover 009 and the grinding disc 007.

Referring to fig. 2 and 6, an exemplary procedure for cleaning the inner wall of the housing 009 is shown according to which:

and it is rotatory at centrifuge tube 001, after throwing away the phosphate ester liquid, on the melamine powder that the phosphate ester liquid adhesion is being hey can be collided the inner wall of dustcoat 009, can make this moment to glue the mixed solution that has phosphate ester liquid and melamine powder on dustcoat 009 inner wall, can cause the waste, so be provided with the doctor-bar 004 on centrifuge tube 001, doctor-bar 004 and dustcoat 009 inner wall contact, thereby in centrifuge tube 001 is rotatory, drive doctor-bar 004 sliding contact on dustcoat 009 inner wall, scrape the mixed solution who has glued on dustcoat 009 inner wall down, and doctor-bar 004 is the slope for the horizontal plane, alright guide with the mixed solution who scrapes down, make the mixed solution who scrapes down fall down.

Referring to fig. 5, 9 and 10, one exemplary process by which the mixed solution may be processed is shown:

the phosphate ester liquid stuck with melamine powder falling from the upper side enters the mixing barrel 014, and at the moment, the stirring rod 013 is fixed at the bottom end of the centrifugal barrel 001, so that the stirring rod 013 can be directly driven by the power of the centrifugal barrel 001 to stir the phosphate ester liquid of the melamine powder concentrated in the mixing barrel 014, the melamine powder and the phosphate ester liquid further permeate into each other, and the melamine powder and the phosphate ester liquid are mixed to form a gel-like mixed liquid in a uniform state, so that the flame retardant is obtained.

Referring to fig. 4 and 8, one exemplary operation in which the power input to the mixing barrel 014 is available is as follows:

the device still includes ring gear 010, gear 011 and plectane 012, and ring gear 010 is fixed on material pipe 005, and gear 011 and ring gear 010 mesh, and material pipe 005 rotates on plectane 012, alright drive gear 011 with using gear motor and rotate, and gear motor can fix on plectane 012, and gear 011 drives ring gear 010 and material pipe 005 rotatory to realize the power input when mixing barrel 014 is rotatory.

Referring to fig. 8-10, one exemplary operation that may be achieved to facilitate disassembly according to the illustration is:

the device still includes davit 018 and bolt 019, bolt 019 threaded connection is at davit 018, davit 018 is fixed on dustcoat 009, is provided with the bayonet socket on the davit 018, when using, alright with can wear into in material pipe 005 from dustcoat 009 down direction, make plectane 012 arrive davit 018 position, then make davit 018 enter into davit 018 bayonet socket, screw up bolt 019 afterwards, make bolt 019 press from both sides plectane 012 tightly on davit 018 to the realization is put into dustcoat 009 with mill 007 and centrifuge bowl 001, otherwise also can dismantle it, be convenient for to the work such as maintenance to dustcoat 009, mill 007 and centrifuge bowl 001.

Referring to fig. 7 and 10, an exemplary operation of removing the agitator bar 013 according to the illustration is:

the device also comprises a rotating arm 015, a screw rod 016 and a cross beam 017, wherein the rotating arm 015 rotates on the mixing barrel 014, the screw rod 016 rotates on the rotating arm 015, the cross beam 017 is in threaded connection with the screw rod 016, the outer cover 009 is fixed on the cross beam 017, after the device is used, the screw rod 016 can be rotated, the cross beam 017 slides upwards on the rotating arm 015, so that the cross beam 017 drives the outer cover 009 to move away from the mixing barrel 014, the stirring rod 013 comes out of the mixing barrel 014, the stirring rod 013 and the mixing barrel 014 can be cleaned and disinfected for next use, the rotating arm 015 rotates on the mixing barrel 014, and when the stirring rod 013 is taken down, another speed reducing motor drives the rotating arm 015 to rotate, and the stirring rod 013 rotates away from the mixing barrel 014.