CN112226011A - PVC (polyvinyl chloride) rapid curing formula manufacturing process - Google Patents
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- CN112226011A CN112226011A CN202011004323.XA CN202011004323A CN112226011A CN 112226011 A CN112226011 A CN 112226011A CN 202011004323 A CN202011004323 A CN 202011004323A CN 112226011 A CN112226011 A CN 112226011A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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
- C08L27/02—Compositions 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
- C08L27/04—Compositions 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
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention discloses a preparation process of a PVC (polyvinyl chloride) fast curing formula, which comprises the following steps: the paint comprises resin powder, a light stabilizer, ACR, CRE, a filler, titanium dioxide, zinc stearate, toner, PE wax and an anti-ultraviolet agent, wherein the weight parts of the components are as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor; according to the invention, the raw material mixture is vacuumized by using the vacuum machine, and the raw material mixture is subjected to multiple standing and heat preservation treatments, so that the content of bubbles in the raw material mixture is reduced, the product breakage caused by the presence of bubbles in the product pultrusion process is avoided, the yield of the product is improved, the pultrusion speed of the product is improved, the large-scale production is facilitated, and meanwhile, the curing time is short and the manufacturing efficiency is improved in the PVC product manufacturing process by using the formula.
Description
Technical Field
The invention relates to the technical field of PVC product manufacturing, in particular to a manufacturing process of a PVC fast curing formula.
Background
PVC, polyvinyl chloride, is a high molecular material obtained by addition polymerization of vinyl chloride, and is the third most widely produced synthetic plastic polymer after polyethylene and polypropylene. PVC is white powder of amorphous structure, poor stability to light and heat, no fixed melting point, better mechanical properties, excellent dielectricity, PVC is a vacuum plastic film in essence, and is used for surface layer packaging of various panels, so the PVC is changed into a decorative film and a depression glue film, and is applied to industries such as building materials, packaging, medicines and the like, wherein in the process of manufacturing PVC products, the fixed molding time is long, the manufacturing efficiency is reduced, and meanwhile, bubbles are easy to remain in the mixture in the process of manufacturing PVC products, so that the yield of the products is reduced in the process of performing pultrusion on the products, and the large-scale production is not facilitated.
Disclosure of Invention
The invention aims to provide a preparation process of a PVC (polyvinyl chloride) fast curing formula, which aims to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: a PVC fast curing formulation comprising: the paint comprises resin powder, a light stabilizer, ACR, CRE, a filler, titanium dioxide, zinc stearate, toner, PE wax and an anti-ultraviolet agent, wherein the weight parts of the components are as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor.
A manufacturing process for fast curing PVC comprises the following steps of, step one, selecting raw materials; step two, heating and mixing; step three, standing and preserving heat; step four, vacuum treatment; step five, extrusion molding;
in the first step, 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor are weighed for later use;
in the second step, the raw materials weighed in the first step are placed in a kneader to be heated and mixed, and then the mixture is conveyed to a cooling mixer to be cooled to obtain a cooled mixture;
in the third step, the cooling mixture is placed in a heat preservation box for standing treatment, the standing time is 10-20min, the cooling mixture is stirred in the standing process to obtain a standby material, and the stirring speed is 100-;
in the fourth step, the spare material obtained in the third step is placed in a vacuum machine for vacuum pumping treatment, the vacuum degree is 80-90%, then the spare material after vacuum pumping treatment is heated and stirred for 10-15min, the heating temperature is 40-50 ℃, then the heated spare material is placed in a heat preservation box for heat preservation and standing for 3-5min, and the used material can be obtained;
in the fifth step, the used materials obtained in the fourth step are conveyed to a double-screw extruder to be heated in a feeding section, a compression section, a melting section and an extrusion section respectively, then the materials are extruded by a required forming die head, the temperature of the end of the die head is 200-210 ℃, and then the materials are drawn and cooled to normal temperature by an extruder, wherein the drawing pressure is 0.2-0.3MPa, the rotating speed of the double screws is 30-50r/min, and the screws in the double-screw extruder rotate in parallel and in different directions.
According to the technical scheme, the filler is a mixture of calcium carbonate and aluminum hydroxide.
According to the technical scheme, in the second step, the rotating speed of the kneader is 660-1300r/min, and the heating temperature of the kneader is 110-120 ℃.
According to the technical scheme, in the second step, the cooling temperature is 40-45 ℃, and the rotating speed of the cooling mixer is 50-55 r/min.
According to the technical scheme, in the third step, the temperature in the heat preservation box is 10-45 ℃.
According to the technical scheme, in the fourth step, the temperature in the heat insulation box is 50-60 ℃.
According to the above technical scheme, in the fifth step, the heating temperature of the feeding section is 185-.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the raw material mixture is subjected to heat preservation and standing treatment, and the raw material mixture is subjected to vacuum pumping treatment by using the vacuum machine, so that the content of bubbles in the raw material mixture is effectively reduced, the product breakage caused by the presence of bubbles in the product pultrusion process is avoided, the yield of the product is improved, the product pultrusion speed is improved, the large-scale production is facilitated, and meanwhile, the curing time is short and the manufacturing efficiency is improved in the PVC product manufacturing process by using the formula.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, the present invention provides a technical solution:
example 1:
a PVC fast curing formulation comprising: the paint comprises resin powder, a light stabilizer, ACR, CRE, a filler, titanium dioxide, zinc stearate, toner, PE wax and an anti-ultraviolet agent, wherein the weight parts of the components are as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor, wherein the filler is a mixture of calcium carbonate and aluminum hydroxide.
A manufacturing process for fast curing PVC comprises the following steps of, step one, selecting raw materials; step two, heating and mixing; step three, standing and preserving heat; step four, vacuum treatment; step five, extrusion molding;
in the first step, 99 parts of resin powder, 4.5 parts of light stabilizer, 1.5 parts of ACR, 2.5 parts of CRE, 50 parts of filler, 1.5 parts of titanium dioxide, 0.8 part of zinc stearate, 0.04 part of toner, 0.8 part of PE wax and 0.02 part of ultraviolet inhibitor are weighed for later use;
in the second step, the raw materials weighed in the first step are placed in a kneader for heating and mixing, the rotation speed of the kneader is 660-1300r/min, the heating temperature of the kneader is 110-120 ℃, then the mixture is conveyed to a cooling mixer for cooling treatment to obtain a cooled mixture, the cooling temperature is 40-45 ℃, and the rotation speed of the cooling mixer is 50-55 r/min;
in the third step, the cooling mixture is placed in a heat preservation box for standing treatment, the standing time is 10-20min, the temperature in the heat preservation box is 10-45 ℃, the cooling mixture is stirred in the standing process to obtain a standby material, and the stirring speed is 100-120 r/min;
in the fourth step, the spare material obtained in the third step is placed in a vacuum machine for vacuum pumping treatment, the vacuum degree is 80-90%, then the spare material after vacuum pumping treatment is heated and stirred for 10-15min, the heating temperature is 40-50 ℃, then the heated spare material is placed in a heat preservation box for heat preservation and standing for 3-5min, and the temperature inside the heat preservation box is 50-60 ℃;
in the fifth step, the used material obtained in the fourth step is transported to a double screw extruder to be heated and then extruded by a required forming die head, the temperature of the die head end is 200 plus at 210 ℃, and then the used material is drawn and cooled to normal temperature by an extruder, the drawing pressure is 0.2-0.3MPa, the rotating speed of the double screw is 30-50r/min, the heating temperature of the feeding section is 185 plus one temperature, the temperature of the compression section is 175 plus one temperature at 180 ℃, the temperature of the melting section is 170 plus one temperature at 180 ℃, the temperature of the extrusion section is 184 plus one temperature at 186 ℃, and screws in the double screw extruder rotate in parallel and in different directions.
Example 2:
a PVC fast curing formulation comprising: the paint comprises resin powder, a light stabilizer, ACR, CRE, a filler, titanium dioxide, zinc stearate, toner, PE wax and an anti-ultraviolet agent, wherein the weight parts of the components are as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor, wherein the filler is a mixture of calcium carbonate and aluminum hydroxide.
A manufacturing process for fast curing PVC comprises the following steps of, step one, selecting raw materials; step two, heating and mixing; step three, standing and preserving heat; step four, vacuum treatment; step five, extrusion molding;
in the first step, 100 parts of resin powder, 5 parts of light stabilizer, 2.5 parts of ACR, 3.5 parts of CRE, 100 parts of filler, 2 parts of titanium dioxide, 1.5 parts of zinc stearate, 0.08 part of toner, 1 part of PE wax and 0.06 part of ultraviolet inhibitor are weighed for later use;
in the second step, the raw materials weighed in the first step are placed in a kneader for heating and mixing, the rotation speed of the kneader is 660-1300r/min, the heating temperature of the kneader is 110-120 ℃, then the mixture is conveyed to a cooling mixer for cooling treatment to obtain a cooled mixture, the cooling temperature is 40-45 ℃, and the rotation speed of the cooling mixer is 50-55 r/min;
in the third step, the cooling mixture is placed in a heat preservation box for standing treatment, the standing time is 10-20min, the temperature in the heat preservation box is 10-45 ℃, the cooling mixture is stirred in the standing process to obtain a standby material, and the stirring speed is 100-120 r/min;
in the fourth step, the spare material obtained in the third step is placed in a vacuum machine for vacuum pumping treatment, the vacuum degree is 80-90%, then the spare material after vacuum pumping treatment is heated and stirred for 10-15min, the heating temperature is 40-50 ℃, then the heated spare material is placed in a heat preservation box for heat preservation and standing for 3-5min, and the temperature inside the heat preservation box is 50-60 ℃;
in the fifth step, the used material obtained in the fourth step is transported to a double screw extruder to be heated and then extruded by a required forming die head, the temperature of the die head end is 200 plus at 210 ℃, and then the used material is drawn and cooled to normal temperature by an extruder, the drawing pressure is 0.2-0.3MPa, the rotating speed of the double screw is 30-50r/min, the heating temperature of the feeding section is 185 plus one temperature, the temperature of the compression section is 175 plus one temperature at 180 ℃, the temperature of the melting section is 170 plus one temperature at 180 ℃, the temperature of the extrusion section is 184 plus one temperature at 186 ℃, and screws in the double screw extruder rotate in parallel and in different directions.
Example 3:
a PVC fast curing formulation comprising: the paint comprises resin powder, a light stabilizer, ACR, CRE, a filler, titanium dioxide, zinc stearate, toner, PE wax and an anti-ultraviolet agent, wherein the weight parts of the components are as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor, wherein the filler is a mixture of calcium carbonate and aluminum hydroxide.
A manufacturing process for fast curing PVC comprises the following steps of, step one, selecting raw materials; step two, heating and mixing; step three, standing and preserving heat; step four, vacuum treatment; step five, extrusion molding;
in the first step, 100 parts of resin powder, 5 parts of light stabilizer, 2 parts of ACR, 3 parts of CRE, 70 parts of filler, 2 parts of titanium dioxide, 1 part of zinc stearate, 0.06 part of toner, 0.9 part of PE wax and 0.05 part of ultraviolet inhibitor are weighed for later use;
in the second step, the raw materials weighed in the first step are placed in a kneader for heating and mixing, the rotation speed of the kneader is 660-1300r/min, the heating temperature of the kneader is 110-120 ℃, then the mixture is conveyed to a cooling mixer for cooling treatment to obtain a cooled mixture, the cooling temperature is 40-45 ℃, and the rotation speed of the cooling mixer is 50-55 r/min;
in the third step, the cooling mixture is placed in a heat preservation box for standing treatment, the standing time is 10-20min, the temperature in the heat preservation box is 10-45 ℃, the cooling mixture is stirred in the standing process to obtain a standby material, and the stirring speed is 100-120 r/min;
in the fourth step, the spare material obtained in the third step is placed in a vacuum machine for vacuum pumping treatment, the vacuum degree is 80-90%, then the spare material after vacuum pumping treatment is heated and stirred for 10-15min, the heating temperature is 40-50 ℃, then the heated spare material is placed in a heat preservation box for heat preservation and standing for 3-5min, and the temperature inside the heat preservation box is 50-60 ℃;
in the fifth step, the used material obtained in the fourth step is transported to a double screw extruder to be heated and then extruded by a required forming die head, the temperature of the die head end is 200 plus at 210 ℃, and then the used material is drawn and cooled to normal temperature by an extruder, the drawing pressure is 0.2-0.3MPa, the rotating speed of the double screw is 30-50r/min, the heating temperature of the feeding section is 185 plus one temperature, the temperature of the compression section is 175 plus one temperature at 180 ℃, the temperature of the melting section is 170 plus one temperature at 180 ℃, the temperature of the extrusion section is 184 plus one temperature at 186 ℃, and screws in the double screw extruder rotate in parallel and in different directions.
The PVC products obtained in the above examples were respectively tested, and the obtained data are as follows:
| percent yield/%) | |
| Example 1 | 99.97 |
| Example 2 | 99.98 |
| Example 3 | 99.97 |
Based on the above, the invention has the advantages that the raw material mixture is subjected to heat preservation standing treatment for many times and is subjected to vacuum pumping treatment, bubbles in the raw material mixture are fully removed, the residual quantity of the bubbles in the raw material mixture is reduced, the phenomenon that the product is broken due to the existence of the bubbles in the process of squeezing and drawing the product is effectively avoided, the pultrusion speed is improved, the large-scale production is facilitated, and meanwhile, the curing time is shortened and the manufacturing efficiency is improved in the process of manufacturing the product by utilizing the formula.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A PVC fast curing formulation comprising: resin powder, light stabilizer, ACR, CRE, filler, titanium dioxide, zinc stearate, toner, PE wax and anti-ultraviolet agent, and is characterized in that: the weight parts of the components are respectively as follows: 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor.
2. A manufacturing process for fast curing PVC comprises the following steps of, step one, selecting raw materials; step two, heating and mixing; step three, standing and preserving heat; step four, vacuum treatment; step five, extrusion molding; the method is characterized in that:
in the first step, 99-100 parts of resin powder, 4.5-5 parts of light stabilizer, 1.5-2.5 parts of ACR, 2.5-3.5 parts of CRE, 50-100 parts of filler, 1.5-2 parts of titanium dioxide, 0.8-1.5 parts of zinc stearate, 0.04-0.08 part of toner, 0.8-1 part of PE wax and 0.02-0.06 part of ultraviolet inhibitor are weighed for later use;
in the second step, the raw materials weighed in the first step are placed in a kneader to be heated and mixed, and then the mixture is conveyed to a cooling mixer to be cooled to obtain a cooled mixture;
in the third step, the cooling mixture is placed in a heat preservation box for standing treatment, the standing time is 10-20min, the cooling mixture is stirred in the standing process to obtain a standby material, and the stirring speed is 100-;
in the fourth step, the spare material obtained in the third step is placed in a vacuum machine for vacuum pumping treatment, the vacuum degree is 80-90%, then the spare material after vacuum pumping treatment is heated and stirred for 10-15min, the heating temperature is 40-50 ℃, then the heated spare material is placed in a heat preservation box for heat preservation and standing for 3-5min, and the used material can be obtained;
in the fifth step, the used materials obtained in the fourth step are conveyed to a double-screw extruder to be heated in a feeding section, a compression section, a melting section and an extrusion section respectively, then the materials are extruded by a required forming die head, the temperature of the end of the die head is 200-210 ℃, and then the materials are drawn and cooled to normal temperature by an extruder, wherein the drawing pressure is 0.2-0.3MPa, the rotating speed of the double screws is 30-50r/min, and the screws in the double-screw extruder rotate in parallel and in different directions.
3. The PVC fast curing formulation according to claim 1, characterized in that: the filler is a mixture of calcium carbonate and aluminum hydroxide.
4. The process of claim 2 for the rapid curing of PVC, wherein: in the second step, the rotation speed of the kneader is 660-1300r/min, and the heating temperature of the kneader is 110-120 ℃.
5. The process of claim 2 for the rapid curing of PVC, wherein: in the second step, the cooling temperature is 40-45 ℃, and the rotating speed of the cooling mixer is 50-55 r/min.
6. The process of claim 2 for the rapid curing of PVC, wherein: in the third step, the temperature in the heat preservation box is 10-45 ℃.
7. The process of claim 2 for the rapid curing of PVC, wherein: in the fourth step, the temperature in the heat insulation box is 50-60 ℃.
8. The process of claim 2 for the rapid curing of PVC, wherein: in the fifth step, the heating temperature of the feeding section is 185-195 ℃, the temperature of the compression section is 175-180 ℃, the temperature of the melting section is 170-180 ℃, and the temperature of the extrusion section is 184-186 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591612A (en) * | 2022-03-18 | 2022-06-07 | 浙江亨达光学有限公司 | Novel resin not easy to wear and preparation process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106380726A (en) * | 2016-08-30 | 2017-02-08 | 曾立敏 | Eco-friendly composite material and production method thereof |
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- 2020-09-22 CN CN202011004323.XA patent/CN112226011A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106380726A (en) * | 2016-08-30 | 2017-02-08 | 曾立敏 | Eco-friendly composite material and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591612A (en) * | 2022-03-18 | 2022-06-07 | 浙江亨达光学有限公司 | Novel resin not easy to wear and preparation process thereof |
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