CN112500659A - White PVC colloidal particle and production process thereof - Google Patents

White PVC colloidal particle and production process thereof Download PDF

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CN112500659A
CN112500659A CN202011464176.4A CN202011464176A CN112500659A CN 112500659 A CN112500659 A CN 112500659A CN 202011464176 A CN202011464176 A CN 202011464176A CN 112500659 A CN112500659 A CN 112500659A
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talcum powder
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CN112500659B (en
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何联载
肖有芳
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Dongguan Dingxin Industrial Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

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Abstract

The application relates to the technical field of PVC plastics, in particular to white PVC colloidal particles and a production process thereof. The white PVC colloidal particle comprises the following components in parts by weight: 90-110 parts of PVC resin; 25-80 parts of a plasticizer; 3-6 parts of epoxidized soybean oil; 3-6 parts of an environment-friendly stabilizer; 0.6-1.2 parts of internal lubricant; 0.4-0.8 part of external lubricant; 10-30 parts of a coloring agent; 14-18 parts of talcum powder; 6-8 parts of silicone oil. The preparation method comprises the following steps: uniformly mixing PVC resin, a plasticizer, epoxidized soybean oil, an environment-friendly stabilizer, an internal lubricant, an external lubricant, a colorant, talcum powder and silicone oil to obtain a mixture A; and heating and stirring the mixture A to a molten state, extruding the molten mixture A, cooling, and cutting the cooled mixture A to obtain the white PVC colloidal particles. The white PVC colloidal particle can be used for a water delivery pipe and has the advantage that moss is not easy to grow in a PVC water pipe.

Description

White PVC colloidal particle and production process thereof
Technical Field
The application relates to the technical field of PVC plastics, in particular to white PVC colloidal particles and a production process thereof.
Background
Polyvinyl chloride (PVC), is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) with initiators such as peroxides and azo compounds or under the action of light and heat according to a radical polymerization mechanism. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is white powder with an amorphous structure, has small branching degree, starts to decompose at the glass transition temperature of 77-90 ℃ and about 170 ℃, has poor stability to light and heat, can decompose to generate hydrogen chloride when being exposed to the sun at the temperature of more than 100 ℃ or for a long time, further automatically catalyzes and decomposes to cause color change, and the physical and mechanical properties are also rapidly reduced. PVC has been the most widely used plastic in the world and is used in a very wide range of applications. The product has wide application in building materials, industrial products, daily necessities, floor leathers, floor tiles, artificial leathers, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like.
PVC is widely applied to toys or water delivery pipes, a PVC pipe drainage pipe takes sanitary polyvinyl chloride (PVC) resin as a main raw material, a proper amount of stabilizer, lubricant, filler, toner and the like are added, the PVC pipe drainage pipe is subjected to extrusion molding by a plastic extruder and injection molding by an injection molding machine, and the production of pipes and pipe fittings is completed through the working procedures of cooling, curing, shaping, inspection, packaging and the like.
Disclosure of Invention
In order to prevent moss from growing on a PVC water pipe, the application provides the white PVC colloidal particle and a production process thereof.
First aspect, this application provides a this white PVC micelle, adopts following technical scheme:
the white PVC colloidal particle comprises the following components in parts by weight: 90-110 parts of PVC resin; 25-80 parts of a plasticizer; 3-6 parts of epoxidized soybean oil; 3-6 parts of an environment-friendly stabilizer; 0.6-1.2 parts of internal lubricant; 0.4-0.8 part of external lubricant; 10-30 parts of a coloring agent; 14-18 parts of talcum powder; 6-8 parts of silicone oil.
By adopting the technical scheme, the plasticizer can improve the performance of the high polymer material, increase the plasticity and strength of the plastic, reduce the production cost and improve the production benefit; the environment-friendly stabilizer is synthesized by using calcium salt, zinc salt, a lubricant, an antioxidant and the like as main components by adopting a special compounding process, and the environment-friendly stabilizer improves the heat stability of pvc and replaces active and unstable substituent groups; absorbing and neutralizing HCL released in the PVC processing process; the epoxidized soybean oil can play a good synergistic role with the environment-friendly stabilizer, so that the performance of the PVC colloidal particles is improved; the internal lubricant is used for reducing the internal friction force among polymer molecular chains in the polymer processing process, so that the processability is improved; the external lubricant is an additive which is added for reducing the friction between the polymer and the interface of the surface of the molding processing machine in the molding processing process, so that PVC is not easy to adhere to the machine; the coloring agent can play a decisive role in the color of the PVC colloidal particles; and the talcum powder and the silicone oil can make the surface of the pvc colloidal particle smoother, improve the antimicrobial capability of the pipe prepared from the pvc colloidal particle, and make algae not easy to adhere and propagate on the pipe.
Preferably, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps: adding 0.2-0.4 part by weight of aluminate into 12-16 parts by weight of paraffin oil, heating to 120 ℃ for uniform mixing, then adding 20-18 parts by weight of talcum powder, fully grinding under ultrasonic, cooling and draining to obtain the modified talcum powder.
By adopting the technical scheme, after the talcum powder is modified by using the aluminate, the talcum powder and the PVC colloidal particles can be compatible, so that the connection between the talcum powder and the PVC colloidal particles is better, and the antimicrobial capability of the pipe is improved.
Preferably, 3-5 parts by weight of carbon fiber and 3-5 parts by weight of glass fiber are also added before grinding.
Through adopting above-mentioned technical scheme, the addition of carbon fiber and glass fiber makes the alga be difficult to the attached reproduction on the tubular product surface more, improves the antimicrobial ability of tubular product to because carbon fiber and glass fiber's addition, make the intensity of this white PVC micelle can obtain promoting.
Preferably, the grinding temperature is 90-110 ℃ and the grinding time is 0.4-1 h.
Preferably, the mesh number of the talcum powder is 1100-1300 meshes.
Preferably, the carbon fiber has a diameter ranging from 4 to 6 μm and a length ranging from 70 to 90 μm, and the glass fiber has a diameter ranging from 4 to 6 μm and a length ranging from 70 to 90 μm.
Preferably, the plasticizer is dibutyl phthalate, the environment-friendly stabilizer is a calcium-zinc stabilizer, the internal lubricant is stearic alcohol, the external lubricant is paraffin, and the colorant is calcium carbonate powder.
By adopting the technical scheme, the calcium-zinc stabilizer is environment-friendly and nontoxic, so that the pipe prepared from the PVC colloidal particles is natural and environment-friendly.
Preferably, the mesh number of the calcium powder is in the range of 1000-1200 meshes.
In a second aspect, the application provides a production process of the white PVC colloidal particles, which adopts the following technical scheme:
the production process of the white PVC colloidal particle comprises the following steps: s1: uniformly mixing PVC resin, a plasticizer, epoxidized soybean oil, an environment-friendly stabilizer, an internal lubricant, an external lubricant, a colorant, talcum powder and silicone oil to obtain a mixture A; s2: and heating and stirring the mixture A to a molten state, extruding the molten mixture A, cooling, and cutting the cooled mixture A to obtain the white PVC colloidal particles.
By adopting the technical scheme, the PVC resin and various additives are uniformly mixed, and then the uniformly mixed substances are heated and melted, so that chemical reaction occurs among the components, and the PVC colloidal particles are prepared.
Preferably, in the step S2, the heating temperature is 160-180 ℃.
In summary, the present application has the following beneficial effects:
1. by adding the talcum powder and the silicone oil, the surface of the PVC colloidal particle can be smoother, the antimicrobial capability of the pipe prepared from the PVC colloidal particle is improved, and algae are not easy to adhere and propagate on the pipe.
2. After the talcum powder is modified by the aluminate, the compatibility between the talcum powder and the PVC colloidal particles can be realized, so that the connection between the talcum powder and the PVC colloidal particles is better, and the antimicrobial capability of the pipe is improved.
3. The addition of the carbon fiber and the glass fiber enables algae to be less prone to attaching and propagating on the surface of the pipe, the antimicrobial capacity of the pipe is improved, and the strength of the white PVC colloidal particle can be improved due to the addition of the carbon fiber and the glass fiber.
Detailed Description
The present application will be described in further detail with reference to examples.
The source of the raw materials for the following examples is shown in table 1:
TABLE 1
Raw materials Manufacturer of the product
PVC resin Wuhanxin Xiuyi chemical Co Ltd
Talcum powder Processing plant for luck-honest mineral products in Lingshou county
Silicone oil Shandong Li-ang New Material science and technology Co Ltd
Aluminate ester Nanjing Xuanyao New Material science and technology Limited
Examples
Example 1
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin, 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes, 14 parts by weight of talcum powder with the average mesh number of 1100 meshes and 6 parts by weight of silicone oil into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, so as to obtain a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Example 2
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin, 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes, 14 parts by weight of talcum powder with the average mesh number of 1100 meshes and 6 parts by weight of silicone oil into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, so as to obtain a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Wherein, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
heating 12 parts by weight of paraffin oil to 100 ℃, adding 0.2 part by weight of aluminate into the paraffin oil, preserving heat at 100 ℃, and stirring the paraffin oil by using a stirrer, wherein the stirring speed is 200 revolutions per minute, and the stirring time is 10 min; and then adding 18 parts of talcum powder into an ultrasonic grinding machine, adding the treated aluminate paraffin oil solution, fully grinding under ultrasonic at the temperature of 90 ℃ for 0.4h, cooling the talcum powder after grinding is finished, and draining at room temperature until no paraffin oil drips out, thus obtaining the modified talcum powder.
Example 3
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin, 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes, 14 parts by weight of talcum powder with the average mesh number of 1100 meshes and 6 parts by weight of silicone oil into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, so as to obtain a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Wherein, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
wherein, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
heating 12 parts by weight of paraffin oil to 100 ℃, adding 0.2 part by weight of aluminate into the paraffin oil, preserving heat at 100 ℃, and stirring the paraffin oil by using a stirrer, wherein the stirring speed is 200 revolutions per minute, and the stirring time is 10 min; and then adding 18 parts of talcum powder, 3 parts of carbon fiber with the average diameter of 4 mu m and the average length of 70 mu m and 3 parts of glass fiber with the average diameter of 4 mu m and the average length of 70 mu m into an ultrasonic grinding machine, adding the treated aluminate paraffin oil solution, fully grinding at the ultrasonic grinding temperature of 90 ℃ for 0.4h, cooling the talcum powder after grinding is finished, and draining at room temperature until no paraffin oil drips out, thus obtaining the modified talcum powder.
Example 4
A production process of white PVC colloidal particles comprises the following steps:
s1: mixing 110 parts by weight of PVC resin, 47 parts by weight of dibutyl phthalate, 6 parts by weight of epoxidized soybean oil, 4 parts by weight of calcium zinc stabilizer, 1.2 parts by weight of stearic alcohol, 0.6 part by weight of paraffin, 30 parts by weight of calcium carbonate powder with an average mesh number of 1200 meshes, 18 parts by weight of talcum powder with an average mesh number of 1200 meshes and 7 parts by weight of silicone oil in a mixer in sequence, wherein the rotating speed of the mixer is 100r/min, and the mixing time is 10min, so as to obtain a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 180 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Wherein, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
heating 16 parts by weight of paraffin oil to 110 ℃, adding 0.4 part by weight of aluminate into the paraffin oil, preserving heat at 110 ℃, and stirring the paraffin oil by using a stirrer, wherein the stirring speed is 200 revolutions per minute, and the stirring time is 10 min; adding 19 parts of talcum powder, 4 parts of carbon fiber with the average diameter of 6 mu m and the average length of 90 mu m and 5 parts of glass fiber with the average diameter of 5 mu m and the average length of 80 mu m into an ultrasonic grinding machine, adding the treated aluminate paraffin oil solution, fully grinding under ultrasonic at the temperature of 110 ℃ for 0.6h, cooling the talcum powder after grinding is finished, and draining at room temperature until no paraffin oil drips out, thus obtaining the modified talcum powder.
Example 5
A production process of white PVC colloidal particles comprises the following steps:
s1: 100 parts by weight of PVC resin, 80 parts by weight of dibutyl phthalate, 4 parts by weight of epoxidized soybean oil, 6 parts by weight of calcium zinc stabilizer, 0.9 part by weight of stearic alcohol, 0.8 part by weight of paraffin, 20 parts by weight of calcium carbonate powder with the average mesh number of 1100 meshes, 16 parts by weight of talcum powder with the average mesh number of 1300 meshes and 8 parts by weight of silicone oil are mixed uniformly in a mixer in sequence, the rotating speed of the mixer is 100r/min, and the mixing time is 10min, so that a mixture A can be obtained;
s2: and heating and blending the mixture A in a screw extruder at 170 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Wherein, the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
heating 14 parts by weight of paraffin oil to 120 ℃, adding 0.3 part by weight of aluminate into the paraffin oil, preserving heat at 120 ℃, and stirring the paraffin oil by using a stirrer, wherein the stirring speed is 200 revolutions per minute, and the stirring time is 10 min; adding 20 parts of talcum powder, 5 parts of carbon fiber with the average diameter of 5 micrometers and the average length of 80 micrometers and 4 parts of glass fiber with the average diameter of 6 micrometers and the average length of 90 micrometers into an ultrasonic grinding machine, adding the treated aluminate paraffin oil solution, fully grinding at the temperature of 100 ℃ under ultrasonic waves for 1h, cooling the talcum powder after grinding is finished, draining at room temperature until no paraffin oil drips out, and thus obtaining the modified talcum powder.
Comparative example
Comparative example 1
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin and 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, thus obtaining a mixture A; s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Comparative example 2
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin, 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes and 14 parts by weight of talcum powder with the average mesh number of 1100 meshes into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, so as to obtain a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
Comparative example 3
A production process of white PVC colloidal particles comprises the following steps:
s1: sequentially adding 90 parts by weight of PVC resin, 25 parts by weight of dibutyl phthalate, 3 parts by weight of epoxidized soybean oil, 3 parts by weight of calcium zinc stabilizer, 0.6 part by weight of stearic alcohol, 0.4 part by weight of paraffin, 10 parts by weight of calcium carbonate powder with the average mesh number of 1000 meshes and 6 parts by weight of silicone oil into a mixer, and uniformly mixing, wherein the rotating speed of the mixer is 100r/min and the mixing time is 10min during mixing, thus obtaining a mixture A;
s2: and heating and blending the mixture A in a screw extruder at 160 ℃ to enable the mixture A to be heated to be molten, extruding the molten mixture A on a die head of the extruder into strips, cooling the strips in a water cooling tank, and conveying the strips to a granulator for granulation to obtain the white PVC colloidal particles.
TABLE 2 amounts of the components in examples 1-5, comparative examples 1-3, in parts by weight
Figure BDA0002832510570000061
Figure BDA0002832510570000071
Performance test
The present white PVC rubber particles of examples 1 to 5 and comparative examples 1 to 3 in this application were used to manufacture a pipe having an inner diameter of 50mm, an outer diameter of 63mm and a length of 1m using a pipe extruder.
The test method comprises the following steps: 1. sealing one end of the pipe, adding river water rich in algae into the pipe, standing for 3 days, discharging water in the pipe, introducing clean water for 1 minute, wherein the water flow rate is 0.3m/s (when daily water is simulated, a water tap is opened after the water is static for a long time to take water), taking 200mL of water sample of the finally flowing water, shaking uniformly, and adding 6-7 drops of Luge reagent. Three drops of water are taken from each water sample, and the water samples are fully stirred every time when one drop of water is taken.
2. And (3) carrying out microscopic detection, namely placing the taken water sample on a carrier, then covering a cover glass, observing by using a low-multiple objective lens to determine the quantity of algae, and recording.
TABLE 3 algal count chart
Figure BDA0002832510570000072
It can be seen from the combination of example 1 and comparative example 1 and the combination of table 3 that, when talc powder and silicone oil are added to the white PVC rubber particles, the amount of algae in the pipe is greatly reduced, which indicates that the pipe prepared from the white PVC rubber particles in example 1 makes the algae not easily propagate thereon, and improves the antimicrobial ability of the pipe, probably because the surface of the pipe is smoother due to the addition of the talc powder and the silicone oil, so that the algae is not easily attached to the surface of the pipe for propagation, and after the pipe is filled with water for a period of time, the remaining algae in the pipe is basically flushed out of the pipe, so that no algae is basically left in the water after the period of water filling.
It can be seen from the combination of example 1 and comparative example 2, comparative example 3 and table 3 that, when only one of the talc powder and the silicone oil is added to the white PVC rubber particles, the amount of algae in the pipe is decreased compared to the pipe to which both the talc powder and the silicone oil are added, which is probably because the silicone oil enhances the compatibility between the talc powder and the PVC rubber particles after the talc powder and the silicone oil are added to the white PVC rubber particles, so that the connection between the talc powder and the PVC rubber particles is better, thereby improving the antimicrobial ability of the pipe and making the algae not easily propagate.
It can be seen from the combination of examples 1 and 2 and table 3 that the amount of algae in the pipe is greatly reduced when the talc is modified compared to that before the talc is not modified, probably because the compatibility between talc and PVC rubber particles is enhanced after the talc is modified, making the surface of the pipe smoother, and at the same time, the antimicrobial ability of the pipe is improved, making it less likely that algae will multiply.
It can be seen from the combination of example 1 and example 3 and table 3 that, when carbon fiber and glass fiber are added to the white PVC rubber particles, the amount of algae in water is substantially reduced to 0, which is probably because the addition of carbon fiber and glass fiber makes the algae less likely to adhere to and propagate on the surface of the pipe, improves the antimicrobial ability of the pipe, and improves the strength of the white PVC rubber particles due to the addition of carbon fiber and glass fiber.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The white PVC colloidal particle is characterized by comprising the following components in parts by weight:
90-110 parts of PVC resin;
25-80 parts of a plasticizer;
3-6 parts of epoxidized soybean oil;
3-6 parts of an environment-friendly stabilizer;
0.6-1.2 parts of internal lubricant;
0.4-0.8 part of external lubricant;
10-30 parts of a coloring agent;
14-18 parts of talcum powder;
6-8 parts of silicone oil.
2. The unbleached PVC colloidal particle according to claim 1, characterized in that: the talcum powder is modified talcum powder, and the modified talcum powder is prepared by the following steps:
adding 0.2-0.4 part by weight of aluminate into 12-16 parts by weight of paraffin oil, heating to 120 ℃ for uniform mixing, then adding 18-20 parts by weight of talcum powder, fully grinding under ultrasonic, cooling and draining to obtain the modified talcum powder.
3. The unbleached PVC colloidal particle according to claim 2, characterized in that: before grinding, 3-5 parts of carbon fiber and 3-5 parts of glass fiber are added.
4. The unbleached PVC colloidal particle according to claim 2, characterized in that: the grinding temperature is 90-110 ℃, and the grinding time is 0.4-1 h.
5. The unbleached PVC colloidal particle according to claim 2, characterized in that: the mesh range of the talcum powder is 1100-1300 meshes.
6. The unbleached PVC crumb according to claim 3, wherein: the diameter range of the carbon fiber is 4-6 μm, the length range is 70-90 μm, the diameter range of the glass fiber is 4-6 μm, and the length range is 70-90 μm.
7. The unbleached PVC colloidal particle according to claim 1, characterized in that: the plasticizer is dibutyl phthalate, the environment-friendly stabilizer is a calcium-zinc stabilizer, the internal lubricant is stearic alcohol, the external lubricant is paraffin, and the colorant is calcium carbonate powder.
8. The unbleached PVC colloidal particle according to claim 7, characterized in that: the mesh number of the calcium powder is in the range of 1000-1200 meshes.
9. A process for the production of unbleached PVC pimples according to any one of claims 1 to 8, characterized in that: the white PVC colloidal particle is prepared by the following steps:
s1: uniformly mixing PVC resin, a plasticizer, epoxidized soybean oil, an environment-friendly stabilizer, an internal lubricant, an external lubricant, a colorant, talcum powder and silicone oil to obtain a mixture A;
s2: and heating and stirring the mixture A to a molten state, extruding the molten mixture A, cooling, and cutting the cooled mixture A to obtain the white PVC colloidal particles.
10. The production process of unbleached PVC colloidal particles according to claim 9, which is characterized in that: in the step S2, the heating temperature is 160-180 ℃.
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