CN114479241A - Heat-conducting and anti-static pearl wool and preparation method thereof - Google Patents
Heat-conducting and anti-static pearl wool and preparation method thereof Download PDFInfo
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Abstract
The invention provides heat-conducting and anti-static pearl wool, which comprises the following raw materials: 65-90 parts of EPE pearl cotton particles, 10-35 parts of antistatic pearl cotton master batches, 5-20 parts of antibacterial heat-conducting pearl cotton master batches, 2-5 parts of butane agents and 2-8 parts of monoglyceride. The invention is prepared by EPE pearl cotton particles, antistatic pearl cotton master batches and antibacterial heat-conducting pearl cotton master batches, has no grease separation, excellent heat conduction and antistatic performance, quick and long-term antibacterial effect, low cost and no environmental pollution.
Description
Technical Field
The invention belongs to the technical field of pearl cotton production, and particularly relates to heat-conducting and anti-static pearl cotton and a preparation method thereof.
Background
The polyethylene foam cotton is a non-crosslinked closed-cell structure, is also called EPE pearl cotton, and is a novel environment-friendly packaging material. It is made up by using low-density polyethylene resin through the process of physical foaming process to produce countless independent bubbles. The EPE pearl wool has the advantages that the defects of fragility, deformation and poor recovery of common foaming glue are overcome, the novel foaming material with high buffering and shock resistance of EPE pearl wool has a series of excellent use characteristics of heat preservation, moisture prevention, heat insulation, sound insulation, friction prevention, ageing resistance, corrosion resistance and the like, and also has good chemical resistance, and is an ideal substitute for the traditional packaging material. The composite material is widely applied to the fields of high-grade furniture, household appliances, instruments, technical gifts, wooden products, glass ceramics, building waterproof, carpet interlayer, sound insulation, travel bags, precision parts, various pipeline heat preservation and the like. It may also be used in building, electromechanical engineering and other fields.
At present, pearl cotton products in the market of China have the following defects: firstly, the existing pearl cotton has low heat conductivity, and certain heat-conducting property is required for pearl cotton products in certain use occasions, so that fire disasters are avoided; secondly, the existing pearl cotton has certain antibacterial performance, but the antibacterial performance is poor in timeliness, so that the pearl cotton cannot be suitable for occasions with quick-acting and long-acting antibacterial functions; thirdly, the existing pearl cotton has the performance of independent static prevention, but the preparation method is complex, the cost is high, the static shielding function is required to be improved, and no pearl cotton with excellent antibacterial, heat conducting and static prevention performances is available on the market. In conclusion, the inventor provides heat-conducting and antistatic pearl wool and a preparation method thereof, so that the pearl wool has long-acting antibacterial heat-conducting and antistatic functions, does not pollute the environment, and can be recycled repeatedly.
Disclosure of Invention
The invention provides heat-conducting and anti-static pearl cotton, which is prepared from EPE pearl cotton particles, anti-static pearl cotton master batches and antibacterial heat-conducting pearl cotton master batches, has no grease precipitation, excellent heat-conducting and anti-static performances, quick and long-acting antibacterial effect, low cost and no environmental pollution.
In order to achieve the purposes, the specific scheme is as follows:
as a first aspect of the present invention:
the heat-conducting and anti-static pearl cotton comprises 65-90 parts by weight of EPE pearl cotton particles, 10-35 parts by weight of anti-static pearl cotton master batches, 5-20 parts by weight of antibacterial heat-conducting pearl cotton master batches, 2-5 parts by weight of butane and 2-8 parts by weight of monoglyceride.
As a further elaboration of the first aspect of the invention:
preferably, the antistatic pearl wool master batch comprises 60-85 parts by weight of LDPE particles, 4.5-8 parts by weight of ethoxylated tallow alkylamine, 2-7 parts by weight of polyethylene glycol oleate, 3.5-5 parts by weight of alkylphenol polyoxyethylene phosphate, 5-10 parts by weight of methyl vinyl diethoxy silane and 3.5-5 parts by weight of ethoxylated stearylphthalimide.
Preferably, the preparation method of the antistatic pearl wool master batch comprises the following steps: adding the LDPE particles, the ethoxylated tallow alkylamine, the polyethylene glycol oleate and the alkylphenol polyoxyethylene ether phosphate in parts by weight into a double-screw granulator, stirring at the temperature of 80-90 ℃ for 5-10 min, adding the methyl vinyl diethoxy silane and the ethoxylated stearin amine, continuously stirring at the temperature of 120-130 ℃ for 8-10 min, discharging, and granulating to obtain the antistatic pearl cotton master batch.
Preferably, the antibacterial heat-conducting pearl wool master batch comprises 65-95 parts by weight of LDPE particles, 2-10 parts by weight of ethyl vanillin, 3-10 parts by weight of tri-quaternary ammonium salt, 3-5 parts by weight of talcum powder, 1.5-2.5 parts by weight of composite modifier, 1-4 parts by weight of monoglyceride and 3-8 parts by weight of butane agent.
Preferably, the preparation method of the antibacterial heat-conducting pearl wool master batch comprises the following steps: pumping nitrogen into the mixer body by a nitrogen pump of the mixer to keep the mixer body in a nitrogen full state, adding the LDPE granules in parts by weight into the mixer body through a hopper, heating the mixer body to 160-170 ℃, regulating the rotation speed of a screw of the mixer to 80-100 r/min, after the LDPE granules are melted, adding the ethyl vanillin, the tri-quaternary ammonium salt, the talcum powder and the monoglyceride in parts by weight, closing a bin gate of a main body of the mixer, regulating the rotation speed of a screw of the mixer to 250 r/min-280 r/min, fully stirring for 10 min-15 min, regulating the rotation speed of the screw of the mixer to 400 r/min-430 r/min, heating the temperature of the main body of the mixer to 185-200 ℃, adding the composite modifier into the main body of the mixer, then a nitrogen pump rapidly presses the butane agent into the mixer main body, and the antibacterial heat-conducting pearl cotton master batch is prepared by discharging and granulating.
Preferably, the composite modifier is polyethylene wax, a titanate coupling agent and an aluminate coupling agent according to the weight ratio of 2.5-3: 1: 1 of the resulting mixture.
As a second aspect of the present invention:
a preparation method of the heat-conducting and anti-static pearl wool comprises the following steps:
a. an alternating current motor is connected with a screw rod of a main extruder through a reduction gearbox, the EPE pearl cotton particles, the antistatic pearl cotton master batches and the antibacterial heat-conducting pearl cotton master batches in parts by weight are added into a main body of the extruder, the rotation speed of a screw rod of a mixer is adjusted to 200 r/min-230 r/min, the materials are fully stirred for 10 min-15 min until the materials are uniformly mixed, and the heating temperature in the process is 180-190 ℃;
b. the rotating speed of a screw of the mixer is unchanged, the heating temperature is adjusted to be 220-230 ℃, and the monoglyceride with the weight part is pumped into the extruder body;
c. keeping the heating temperature unchanged, adjusting the rotation speed of a screw of the mixer to 400 r/min-430 r/min, pumping the butane agent in parts by weight into the extruder body, and stirring for 10 min-15 min;
d. the cooling system of the extruder is utilized to gradually cool the extruder body, the melted mixture is pushed forward into the die head part through the screw rod, the die head part and the traction roller are matched with each other for extrusion, and the heat-conducting and anti-static pearl cotton foaming body with a connected cellular structure and uniform density is prepared.
Compared with the prior art, the invention has the following technical effects:
the heat-conducting and anti-static pearl cotton comprises EPE pearl cotton particles, anti-static pearl cotton master batches, antibacterial heat-conducting pearl cotton master batches, a butane agent and monoglyceride.
Secondly, the anti-static pearl cotton master batch comprises LDPE (low-density polyethylene) particles, ethoxylated tallow alkylamine, polyethylene glycol oleate, alkylphenol polyoxyethylene phosphate, methyl vinyl diethoxysilane and ethoxylated stearylphthalimide, according to the preparation method of the anti-static pearl cotton master batch, the stirring temperature and the stirring time are controlled to prepare the anti-static pearl cotton master batch, and the addition of the methyl vinyl diethoxysilane and the ethoxylated stearylphthalimide effectively maintains the anti-static performance for a long time even under the condition of low relative humidity, so that the anti-static performance of the heat-conducting and anti-static pearl cotton is further improved, the impedance is high, the influence of the humidity is small, and the durability is long.
Thirdly, the raw materials of the antibacterial heat-conducting pearl cotton master batch comprise LDPE (low-density polyethylene) particles, ethyl vanillin, tri-quaternary ammonium salt, talcum powder, a composite modifier, monoglyceride and a butane solvent, the stirring temperature and the stirring time are controlled according to the preparation method of the antibacterial heat-conducting pearl cotton master batch to prepare the antibacterial heat-conducting pearl cotton master batch, the ethyl vanillin and the tri-quaternary ammonium salt are added to ensure that the antibacterial heat-conducting pearl cotton master batch has strong antibacterial and heat-resisting heat conductivity, and the composite modifier is a mixture of polyethylene wax, a titanate coupling agent and an aluminate coupling agent, so that the composite modifier has excellent dispersibility and surface activity, further improves the heat-conducting property, improves the foaming effect, ensures that the prepared heat-conducting and anti-static pearl cotton has high heat-conducting rate and can resist bacteria for a long time, and is suitable for different occasions.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the heat-conducting and anti-static pearl cotton comprises 75 parts by weight of EPE pearl cotton particles, 20 parts by weight of anti-static pearl cotton master batches, 15 parts by weight of antibacterial heat-conducting pearl cotton master batches, 3 parts by weight of butane agent and 5.5 parts by weight of monoglyceride.
The antistatic pearl wool master batch comprises 70 parts by weight of LDPE (low-density polyethylene) particles, 6 parts by weight of ethoxylated tallow alkylamine, 5 parts by weight of polyethylene glycol oleate, 4.5 parts by weight of alkylphenol polyoxyethylene phosphate, 8 parts by weight of methyl vinyl diethoxysilane and 4 parts by weight of ethoxylated stearylphthalimide.
The preparation method of the antistatic pearl wool master batch comprises the following steps: adding the LDPE particles, the ethoxylated tallow alkylamine, the polyethylene glycol oleate and the alkylphenol polyoxyethylene ether phosphate in parts by weight into a double-screw granulator, stirring at the temperature of 80-90 ℃ for 5-10 min, adding the methyl vinyl diethoxy silane and the ethoxylated stearin amine, continuously stirring at the temperature of 120-130 ℃ for 8-10 min, discharging, and granulating to obtain the antistatic pearl cotton master batch.
The antibacterial heat-conducting pearl cotton master batch comprises 80 parts by weight of LDPE (low-density polyethylene) particles, 8 parts by weight of ethyl vanillin, 7 parts by weight of tri-quaternary ammonium salt, 4 parts by weight of talcum powder, 2 parts by weight of composite modifier, 3 parts by weight of monoglyceride and 6 parts by weight of butane agent.
The preparation method of the antibacterial heat-conducting pearl wool master batch comprises the following steps: pumping nitrogen into the mixer body by a nitrogen pump of the mixer to keep the mixer body in a nitrogen full state, adding the LDPE granules in parts by weight into the mixer body through a hopper, heating the mixer body to 160-170 ℃, regulating the rotation speed of a screw of the mixer to 80-100 r/min, after the LDPE granules are melted, adding the ethyl vanillin, the tri-quaternary ammonium salt, the talcum powder and the monoglyceride in parts by weight, closing a bin gate of a main body of the mixer, regulating the rotation speed of a screw of the mixer to 250 r/min-280 r/min, fully stirring for 10 min-15 min, regulating the rotation speed of the screw of the mixer to 400 r/min-430 r/min, heating the temperature of the main body of the mixer to 185-200 ℃, adding the composite modifier into the main body of the mixer, then a nitrogen pump rapidly presses the butane agent into the mixer main body, and the antibacterial heat-conducting pearl cotton master batch is prepared by discharging and granulating.
The composite modifier is polyethylene wax, titanate coupling agent and aluminate coupling agent according to the weight ratio of 2.8: 1: 1 of the resulting mixture.
The preparation method of the heat-conducting and anti-static pearl wool comprises the following steps:
a. an alternating current motor is connected with a screw rod of a main extruder through a reduction gearbox, the EPE pearl cotton particles, the antistatic pearl cotton master batches and the antibacterial heat-conducting pearl cotton master batches in parts by weight are added into a main body of the extruder, the rotation speed of a screw rod of a mixer is adjusted to 200 r/min-230 r/min, the materials are fully stirred for 10 min-15 min until the materials are uniformly mixed, and the heating temperature in the process is 180-190 ℃;
b. the rotating speed of a screw of the mixer is unchanged, the heating temperature is adjusted to be 220-230 ℃, and the monoglyceride with the weight part is pumped into the extruder body;
c. keeping the heating temperature unchanged, adjusting the rotation speed of a screw of the mixer to 400 r/min-430 r/min, pumping the butane agent in parts by weight into the extruder body, and stirring for 10 min-15 min;
d. the cooling system of the extruder is utilized to gradually cool the extruder body, the melted mixture is pushed forward into the die head part through the screw rod, the die head part and the traction roller are mutually matched for extrusion, and the heat-conducting and anti-static pearl cotton foam body with a uniform cell structure and connected density is prepared.
Example 2:
the heat-conducting and anti-static pearl cotton comprises 65 parts by weight of EPE pearl cotton particles, 10 parts by weight of anti-static pearl cotton master batches, 5 parts by weight of antibacterial heat-conducting pearl cotton master batches, 2 parts by weight of a butane agent and 2 parts by weight of monoglyceride.
The antistatic pearl wool master batch comprises 60 parts by weight of LDPE (low-density polyethylene) particles, 4.5 parts by weight of ethoxylated tallow alkylamine, 2 parts by weight of polyethylene glycol oleate, 3.5 parts by weight of alkylphenol polyoxyethylene phosphate, 5 parts by weight of methyl vinyl diethoxysilane and 3.5 parts by weight of ethoxylated stearylphthalimide.
The preparation method of the antistatic pearl wool master batch comprises the following steps: adding the LDPE particles, the ethoxylated tallow alkylamine, the polyethylene glycol oleate and the alkylphenol polyoxyethylene ether phosphate in parts by weight into a double-screw granulator, stirring at the temperature of 80-90 ℃ for 5-10 min, adding the methyl vinyl diethoxy silane and the ethoxylated stearin amine, continuously stirring at the temperature of 120-130 ℃ for 8-10 min, discharging, and granulating to obtain the antistatic pearl cotton master batch.
The antibacterial heat-conducting pearl cotton master batch comprises 65 parts by weight of LDPE (low-density polyethylene) particles, 2 parts by weight of ethyl vanillin, 3 parts by weight of tri-quaternary ammonium salt, 3 parts by weight of talcum powder, 1.5 parts by weight of composite modifier, 1 part by weight of monoglyceride and 3 parts by weight of butane agent.
The preparation method of the antibacterial heat-conducting pearl wool master batch comprises the following steps: pumping nitrogen into a mixer body by a nitrogen pump of the mixer to keep the mixer body in a nitrogen filling state, adding the LDPE granules in parts by weight into the mixer body through a hopper, heating the mixer body to 160-170 ℃, regulating the rotation speed of a screw of the mixer to 80-100 r/min, and after the LDPE granules are melted, adding the ethyl vanillin, the tri-quaternary ammonium salt, the talcum powder and the monoglyceride in parts by weight, closing a bin gate of a main body of the mixer, regulating the rotation speed of a screw of the mixer to 250 r/min-280 r/min, fully stirring for 10 min-15 min, regulating the rotation speed of the screw of the mixer to 400 r/min-430 r/min, heating the temperature of the main body of the mixer to 185-200 ℃, adding the composite modifier into the main body of the mixer, then a nitrogen pump rapidly presses the butane agent into the mixer main body, and the antibacterial heat-conducting pearl cotton master batch is prepared by discharging and granulating.
The composite modifier is polyethylene wax, titanate coupling agent and aluminate coupling agent according to the weight ratio of 2.5: 1: 1 of the resulting mixture.
The preparation method of the heat-conducting and anti-static pearl wool comprises the following steps:
a. an alternating current motor is connected with a screw rod of a main extruder through a reduction gearbox, the EPE pearl cotton particles, the antistatic pearl cotton master batches and the antibacterial heat-conducting pearl cotton master batches in parts by weight are added into a main body of the extruder, the rotation speed of a screw rod of a mixer is adjusted to 200 r/min-230 r/min, the materials are fully stirred for 10 min-15 min until the materials are uniformly mixed, and the heating temperature in the process is 180-190 ℃;
b. the rotating speed of a screw of the mixer is unchanged, the heating temperature is adjusted to be 220-230 ℃, and the monoglyceride with the weight part is pumped into the extruder body;
c. keeping the heating temperature unchanged, adjusting the rotation speed of a screw of the mixer to 400 r/min-430 r/min, pumping the butane agent in parts by weight into the extruder body, and stirring for 10 min-15 min;
d. the cooling system of the extruder is utilized to gradually cool the extruder body, the melted mixture is pushed forward into the die head part through the screw rod, the die head part and the traction roller are matched with each other for extrusion, and the heat-conducting and anti-static pearl cotton foaming body with a connected cellular structure and uniform density is prepared.
Example 3:
the heat-conducting and anti-static pearl cotton comprises 90 parts by weight of EPE pearl cotton particles, 35 parts by weight of anti-static pearl cotton master batches, 20 parts by weight of antibacterial heat-conducting pearl cotton master batches, 5 parts by weight of a butane agent and 8 parts by weight of monoglyceride.
The antistatic pearl wool master batch comprises 85 parts by weight of LDPE (low-density polyethylene) particles, 8 parts by weight of ethoxylated tallow alkylamine, 7 parts by weight of polyethylene glycol oleate, 5 parts by weight of alkylphenol polyoxyethylene phosphate, 10 parts by weight of methyl vinyl diethoxy silane and 5 parts by weight of ethoxylated stearylphthalimide.
The preparation method of the antistatic pearl wool master batch comprises the following steps: adding the LDPE particles, the ethoxylated tallow alkylamine, the polyethylene glycol oleate and the alkylphenol polyoxyethylene ether phosphate in parts by weight into a double-screw granulator, stirring at the temperature of 80-90 ℃ for 5-10 min, adding the methyl vinyl diethoxy silane and the ethoxylated stearin amine, continuously stirring at the temperature of 120-130 ℃ for 8-10 min, discharging, and granulating to obtain the antistatic pearl cotton master batch.
The antibacterial heat-conducting pearl cotton master batch comprises 95 parts by weight of LDPE (low-density polyethylene) particles, 10 parts by weight of ethyl vanillin, 10 parts by weight of tri-quaternary ammonium salt, 5 parts by weight of talcum powder, 2.5 parts by weight of composite modifier, 4 parts by weight of monoglyceride and 8 parts by weight of butane agent.
The preparation method of the antibacterial heat-conducting pearl wool master batch comprises the following steps: pumping nitrogen into the mixer body by a nitrogen pump of the mixer to keep the mixer body in a nitrogen full state, adding the LDPE granules in parts by weight into the mixer body through a hopper, heating the mixer body to 160-170 ℃, regulating the rotation speed of a screw of the mixer to 80-100 r/min, after the LDPE granules are melted, adding the ethyl vanillin, the tri-quaternary ammonium salt, the talcum powder and the monoglyceride in parts by weight, closing a bin gate of a main body of the mixer, regulating the rotation speed of a screw of the mixer to 250 r/min-280 r/min, fully stirring for 10 min-15 min, regulating the rotation speed of the screw of the mixer to 400 r/min-430 r/min, heating the temperature of the main body of the mixer to 185-200 ℃, adding the composite modifier into the main body of the mixer, then a nitrogen pump rapidly presses the butane agent into the mixer main body, and the antibacterial heat-conducting pearl cotton master batch is prepared by discharging and granulating.
The composite modifier is polyethylene wax, titanate coupling agent and aluminate coupling agent according to the weight ratio of 3: 1: 1 of the resulting mixture.
The preparation method of the heat-conducting and anti-static pearl wool comprises the following steps:
a. an alternating current motor is connected with a screw rod of a main extruder through a reduction gearbox, the EPE pearl cotton particles, the antistatic pearl cotton master batches and the antibacterial heat-conducting pearl cotton master batches in parts by weight are added into a main body of the extruder, the rotation speed of a screw rod of a mixer is adjusted to 200 r/min-230 r/min, the materials are fully stirred for 10 min-15 min until the materials are uniformly mixed, and the heating temperature in the process is 180-190 ℃;
b. the rotating speed of a screw of the mixer is unchanged, the heating temperature is adjusted to be 220-230 ℃, and the monoglyceride with the weight part is pumped into the extruder body;
c. keeping the heating temperature unchanged, adjusting the rotation speed of a screw of the mixer to 400 r/min-430 r/min, pumping the butane agent in parts by weight into the extruder body, and stirring for 10 min-15 min;
d. the cooling system of the extruder is utilized to gradually cool the extruder body, the melted mixture is pushed forward into the die head part through the screw rod, the die head part and the traction roller are matched with each other for extrusion, and the heat-conducting and anti-static pearl cotton foaming body with a connected cellular structure and uniform density is prepared.
Example 4:
the heat-conducting and anti-static pearl cotton comprises 80 parts by weight of EPE pearl cotton particles, 8 parts by weight of anti-static pearl cotton master batches, 15 parts by weight of antibacterial heat-conducting pearl cotton master batches, 4 parts by weight of a butane agent and 6 parts by weight of monoglyceride.
Otherwise the same as example 1
Example 5:
the heat-conducting and anti-static pearl cotton comprises 88 parts by weight of EPE pearl cotton particles, 36 parts by weight of anti-static pearl cotton master batch, 18 parts by weight of antibacterial heat-conducting pearl cotton master batch, 4 parts by weight of butane agent and 4 parts by weight of monoglyceride.
Otherwise the same as example 1
Example 6:
the heat-conducting and anti-static pearl cotton comprises 75 parts by weight of EPE pearl cotton particles, 23 parts by weight of anti-static pearl cotton master batches, 4 parts by weight of antibacterial heat-conducting pearl cotton master batches, 4.5 parts by weight of a butane agent and 7 parts by weight of monoglyceride.
Otherwise the same as example 1
Example 7:
the heat-conducting and anti-static pearl cotton comprises 80 parts by weight of EPE pearl cotton particles, 22 parts by weight of anti-static pearl cotton master batches, 21 parts by weight of antibacterial heat-conducting pearl cotton master batches, 4.5 parts by weight of butane agent and 5 parts by weight of monoglyceride.
Otherwise the same as example 1
Example 8:
the antistatic pearl wool master batches and the antibacterial heat-conducting pearl wool master batches are prepared by a conventional processing mode, the pearl wool foaming body is prepared by the conventional processing mode, and the rest is the same as that of the example 1.
Example 9:
the foam of pearl wool was prepared by a conventional processing method, otherwise as in example 1.
Example 10:
the antistatic pearl wool master batch is prepared by adopting a conventional processing mode, and the rest is the same as the example 1.
Example 11:
the antibacterial heat-conducting pearl wool master batch is prepared by adopting a conventional processing mode, and the rest is the same as the example 1.
The heat-conducting and antistatic pearl cotton prepared in the above examples 1 to 11 was molded into heat-conducting and antistatic pearl cotton having the same shape and size and a thickness of 3cm, and the molded pearl cotton having the same shape and thickness as the commercially available antistatic and antibacterial pearl cotton was subjected to performance test by a conventional test method, and the results were as follows:
based on the data from the above test results, the inventors analyzed the following: examples 1 to 11 the heat conductive and antistatic pearl wool manufactured by the formulation/preparation method of the present invention has properties that are comparable to those of the pearl wool on the market in terms of unit structure, tensile strength and compressive strength, and completely meets the application requirements in the industrial fields of machinery, automobiles, electronic and electrical appliances, instruments and meters, textiles, buildings, etc. In the general antistatic standard of pearl wool, the surface impedance is 1010Above, usually 1011When the surface impedance reaches 1012Above, the antistatic function is lost. It can be seen through experiments that the surface impedance, the thermal conductivity and the bacteriostatic rate of the embodiments 1 to 11 are superior to those of the common pearl cotton in the market, the surface impedance, the thermal conductivity and the bacteriostatic rate of the embodiments 1 to 3 are superior to those of the other embodiments, and the best of the embodiments 1, the surface impedance of the embodiments 4 and 5 is larger because the addition amount of the antistatic pearl cotton master batch is too much or too little compared with the embodiment 1, the surface impedance of the embodiments 6 and 7 is too much or too little compared with the embodiment 1 because the addition amount of the antibacterial heat-conducting pearl cotton master batch is too much or too little compared with the embodiment 1, and the thermal conductivity and the bacteriostatic rate are lower than those of the embodiments 6 and 7. Example 8 is to prepare the antistatic pearl cotton master batch and the antibacterial heat-conducting pearl cotton master batch by a conventional processing method, prepare the pearl cotton foam by the conventional processing method, example 9 is to prepare the pearl cotton foam by the conventional processing method, example 10 is to prepare the antistatic pearl cotton master batch by the conventional processing method, and example 11 is to prepare the antibacterial heat-conducting pearl cotton master batch by the conventional processing method, which is poorer in all aspects than those of examples 1 to 3.
The invention is prepared by EPE pearl cotton particles, antistatic pearl cotton master batches and antibacterial heat-conducting pearl cotton master batches, has no grease separation, excellent heat conduction and antistatic performance, quick and long-term antibacterial effect, low cost and no environmental pollution.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The heat-conducting and anti-static pearl wool is characterized in that: the raw materials comprise 65-90 parts by weight of EPE pearl cotton particles, 10-35 parts by weight of antistatic pearl cotton master batch, 5-20 parts by weight of antibacterial heat-conducting pearl cotton master batch, 2-5 parts by weight of butane solvent and 2-8 parts by weight of monoglyceride.
2. The heat-conducting and antistatic pearl wool as claimed in claim 1, wherein: the antistatic pearl wool master batch comprises, by weight, 60-85 parts of LDPE (low-density polyethylene) particles, 4.5-8 parts of ethoxylated tallow alkylamine, 2-7 parts of polyethylene glycol oleate, 3.5-5 parts of alkylphenol polyoxyethylene phosphate, 5-10 parts of methyl vinyl diethoxysilane and 3.5-5 parts of ethoxylated stearylphthalimide.
3. The heat-conducting and antistatic pearl wool as claimed in claim 2, wherein: the preparation method of the antistatic pearl wool master batch comprises the following steps: adding the LDPE particles, the ethoxylated tallow alkylamine, the polyethylene glycol oleate and the alkylphenol polyoxyethylene ether phosphate in parts by weight into a double-screw granulator, stirring at the temperature of 80-90 ℃ for 5-10 min, adding the methyl vinyl diethoxy silane and the ethoxylated stearin amine, continuously stirring at the temperature of 120-130 ℃ for 8-10 min, discharging, and granulating to obtain the antistatic pearl cotton master batch.
4. The heat-conducting and antistatic pearl wool as claimed in claim 1, wherein: the antibacterial heat-conducting pearl cotton master batch comprises 65-95 parts by weight of LDPE (low-density polyethylene) particles, 2-10 parts by weight of ethyl vanillin, 3-10 parts by weight of tri-quaternary ammonium salt, 3-5 parts by weight of talcum powder, 1.5-2.5 parts by weight of composite modifier, 1-4 parts by weight of monoglyceride and 3-8 parts by weight of butane solvent.
5. The heat-conducting and antistatic pearl wool as claimed in claim 4, wherein: the preparation method of the antibacterial heat-conducting pearl wool master batch comprises the following steps: pumping nitrogen into the mixer body by a nitrogen pump of the mixer to keep the mixer body in a nitrogen full state, adding the LDPE granules in parts by weight into the mixer body through a hopper, heating the mixer body to 160-170 ℃, regulating the rotation speed of a screw of the mixer to 80-100 r/min, after the LDPE granules are melted, adding the ethyl vanillin, the tri-quaternary ammonium salt, the talcum powder and the monoglyceride in parts by weight, closing a bin gate of a main body of the mixer, regulating the rotation speed of a screw of the mixer to 250 r/min-280 r/min, fully stirring for 10 min-15 min, regulating the rotation speed of the screw of the mixer to 400 r/min-430 r/min, heating the temperature of the main body of the mixer to 185-200 ℃, adding the composite modifier into the main body of the mixer, then a nitrogen pump rapidly presses the butane agent into the mixer main body, and the antibacterial heat-conducting pearl cotton master batch is prepared by discharging and granulating.
6. The heat-conducting and antistatic pearl wool as claimed in claim 5, wherein: the composite modifier is polyethylene wax, a titanate coupling agent and an aluminate coupling agent according to the weight ratio of 2.5-3: 1: 1 of the resulting mixture.
7. The preparation method of the heat-conducting and antistatic pearl wool as claimed in claim 1, which comprises the following steps:
a. an alternating current motor is connected with a screw rod of a main extruder through a reduction gearbox, the EPE pearl cotton particles, the antistatic pearl cotton master batches and the antibacterial heat-conducting pearl cotton master batches in parts by weight are added into a main body of the extruder, the rotation speed of a screw rod of a mixer is adjusted to 200 r/min-230 r/min, the materials are fully stirred for 10 min-15 min until the materials are uniformly mixed, and the heating temperature in the process is 180-190 ℃;
b. the rotating speed of a screw of the mixer is unchanged, the heating temperature is adjusted to be 220-230 ℃, and the monoglyceride with the weight part is pumped into the extruder body;
c. keeping the heating temperature unchanged, adjusting the rotation speed of a screw of the mixer to 400 r/min-430 r/min, pumping the butane agent in parts by weight into the extruder body, and stirring for 10 min-15 min;
d. the cooling system of the extruder is utilized to gradually cool the extruder body, the melted mixture is pushed forward into the die head part through the screw rod, the die head part and the traction roller are matched with each other for extrusion, and the heat-conducting and anti-static pearl cotton foaming body with a connected cellular structure and uniform density is prepared.
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