CN113146927B - Pressurized quick injection molding process for antistatic household appliance structural part - Google Patents

Pressurized quick injection molding process for antistatic household appliance structural part Download PDF

Info

Publication number
CN113146927B
CN113146927B CN202011327336.0A CN202011327336A CN113146927B CN 113146927 B CN113146927 B CN 113146927B CN 202011327336 A CN202011327336 A CN 202011327336A CN 113146927 B CN113146927 B CN 113146927B
Authority
CN
China
Prior art keywords
antistatic
raw materials
parts
structural member
injection molding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011327336.0A
Other languages
Chinese (zh)
Other versions
CN113146927A (en
Inventor
支建明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taicang Danielle Moulding Auto Parts Co ltd
Original Assignee
Taicang Danielle Moulding Auto Parts Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taicang Danielle Moulding Auto Parts Co ltd filed Critical Taicang Danielle Moulding Auto Parts Co ltd
Priority to CN202011327336.0A priority Critical patent/CN113146927B/en
Publication of CN113146927A publication Critical patent/CN113146927A/en
Application granted granted Critical
Publication of CN113146927B publication Critical patent/CN113146927B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
    • C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B29C2071/022—Annealing
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76551—Time
    • B29C2945/76561—Time duration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/762—Household appliances
    • 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
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/017—Additives being an antistatic agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/04—Antistatic
    • 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
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention belongs to the field of household electrical appliance structural part production, and particularly discloses a pressurizing quick injection molding process of an antistatic household electrical appliance structural part, which comprises the steps of (1) drying, (2) pressurizing plasticizing, (3) molding, (4) annealing and (5) humidifying.

Description

Pressurized quick injection molding process for antistatic household appliance structural part
Technical Field
The invention belongs to the field of household electrical appliance structural part production, and particularly discloses a pressurizing rapid injection molding process of an antistatic household electrical appliance structural part.
Background
In daily household appliances, static electricity can be accumulated in household appliance structural parts, excessive static electricity can be accumulated, the household appliances can be discharged under specific conditions, the electric appliances are damaged, and fire disasters can be caused when the household appliances are serious. Therefore, antistatic plastic products are often used for manufacturing household electrical appliance structural parts at present. Because the traditional plastic structural part is generally manufactured by an injection molding process, and the antistatic plastic is required to be added with antistatic agents and other auxiliary agents, the ionic nonionic auxiliary agents belong to hygroscopic antistatic agents, or after the auxiliary agents are added, the materials absorb moisture in the air, so that the surface resistance is reduced, and the antistatic performance is achieved. However, the addition of these additives has two effects, on one hand, the high temperature resistance of these additives is poor, which results in that according to the conventional injection molding process, these additives are decomposed in a large amount, which results in losing the antistatic ability, on the other hand, the addition of these additives results in the change of the workability and the formability of the raw materials, and if the original injection molding process is continued, the structural strength of the product is often reduced, or the service life is reduced in daily use, and defects such as cracking are generated. Therefore, a new injection molding process for the antistatic household appliance structural part is urgently needed to be found.
Disclosure of Invention
The invention discloses a pressurizing rapid injection molding process for an antistatic household appliance structural member.
A pressurizing quick injection molding process of an antistatic household appliance structural part comprises the following steps:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to between 0.05 and 0.1 percent; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 150-180 ℃, the plasticizing back pressure is 10-15 Mpa, and the plasticizing time is 15-30min;
3) And (3) forming: placing a frame body of the structural member in a die cavity of a closed die of a screw injection molding machine, wherein the temperature of the closed die is 70-80 ℃, injecting the heat-conducting composite material melt plasticized in the step B into the die cavity of the closed die, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at a cooling speed of 1-3 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 2-4 hours, and keeping the temperature of the oven at 50-60 ℃;
5) And (3) humidity conditioning: and (3) putting the antistatic household electrical appliance structural member product annealed in the step (4) into boiling water, and taking out to obtain a finished antistatic household electrical appliance structural member product.
Further, according to the pressurized rapid injection molding process of the antistatic household electrical appliance structural part, the mass ratio of the ABS plastic to the PVC plastic is 1:1.
Further, in the foregoing process for rapid injection molding of an antistatic household electrical appliance structural member, the mass ratio of the plastic to the antistatic additive in the step 1 is 20:1.
Further, in the pressurized rapid injection molding process of the antistatic household electrical appliance structural member, the mass ratio of the antistatic additive to the reinforcing agent is 1:1.
Further, according to the pressurized rapid injection molding process of the antistatic household electrical appliance structural part, the antistatic additive is composed of the following raw materials in parts by mass:
Figure SMS_1
further, according to the pressurized rapid injection molding process of the antistatic household electrical appliance structural part, the reinforcing agent is composed of the following raw materials in parts by mass:
Figure SMS_2
further, the pressurizing rapid injection molding process of the antistatic household appliance structural part comprises the following steps of:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to 0.75%; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 165 ℃, the plasticizing back pressure is 12Mpa, and the plasticizing time is 25min;
3) And (3) forming: placing a frame body of a structural member in a die cavity of a closed die of a screw injection molding machine, wherein the temperature of the closed die is 75 ℃, injecting the heat-conducting composite material melt plasticized in the step B into the die cavity of the closed die, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at a cooling speed of 2 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 3 hours, and keeping the temperature of the oven at 55 ℃;
5) And (3) humidity conditioning: and (3) putting the antistatic household electrical appliance structural member product annealed in the step (4) into boiling water, and taking out to obtain a finished antistatic household electrical appliance structural member product.
The technical scheme of the invention is as follows:
according to the technical scheme, the invention has at least the following beneficial effects: the invention provides a pressurizing rapid injection molding process of an antistatic household appliance structural member, which has the advantages of short process flow, lower heating temperature than the traditional process, energy conservation, environmental protection and low cost.
Furthermore, the invention discloses a novel formula of the antistatic additive and the reinforcing agent by adjusting the proportion of the raw materials, overcomes the defects that the strength of the product of the original antistatic household appliance structural member is insufficient and cracks are easy to occur, and obtains good antistatic effect.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the processes are conventional, and wherein the starting materials are commercially available from the public unless otherwise specified.
Example 1
The pressurizing fast injection molding process of the antistatic household appliance structural part is characterized by comprising the following steps of:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to 0.05%; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 150 ℃, the plasticizing back pressure is 10Mpa, and the plasticizing time is 15min;
3) And (3) forming: placing a frame body of a structural member in a die cavity of a closed die of a screw injection molding machine, wherein the temperature of the closed die is 70 ℃, injecting the heat-conducting composite material melt plasticized in the step B into the die cavity of the closed die, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at a cooling speed of 1 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 2 hours, and keeping the temperature of the oven at 50 ℃;
5) And (3) humidity conditioning: placing the antistatic household electrical appliance structural member product annealed in the step 4 into boiling water, and taking out to obtain an antistatic household electrical appliance structural member finished product;
the mass ratio of the ABS plastic to the PVC plastic is 1:1;
the mass ratio of the plastic to the antistatic additive in the step 1 is 20:1;
the mass ratio of the antistatic additive to the reinforcing agent is 1:1;
the antistatic additive consists of the following raw materials in parts by mass:
Figure SMS_3
Figure SMS_4
the reinforcing agent consists of the following raw materials in parts by mass:
Figure SMS_5
example 2
The pressurizing fast injection molding process of the antistatic household appliance structural part is characterized by comprising the following steps of:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to 0.75%; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 165 ℃, the plasticizing back pressure is 12Mpa, and the plasticizing time is 25min;
3) And (3) forming: placing a frame body of a structural member in a die cavity of a closed die of a screw injection molding machine, wherein the temperature of the closed die is 75 ℃, injecting the heat-conducting composite material melt plasticized in the step B into the die cavity of the closed die, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at a cooling speed of 2 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 3 hours, and keeping the temperature of the oven at 55 ℃;
5) And (3) humidity conditioning: placing the antistatic household electrical appliance structural member product annealed in the step 4 into boiling water, and taking out to obtain an antistatic household electrical appliance structural member finished product;
the mass ratio of the ABS plastic to the PVC plastic is 1:1;
the mass ratio of the plastic (comprising ABS plastic and PVC plastic) to the antistatic additive in the step 1 is 20:1;
the mass ratio of the antistatic additive to the reinforcing agent is 1:1;
the antistatic additive consists of the following raw materials in parts by mass:
Figure SMS_6
the reinforcing agent consists of the following raw materials in parts by mass:
Figure SMS_7
example 3
The pressurizing fast injection molding process of the antistatic household appliance structural part is characterized by comprising the following steps of:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to between 0.1 percent; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 180 ℃, the plasticizing back pressure is 15Mpa, and the plasticizing time is 30min;
3) And (3) forming: placing a frame body of a structural member in a die cavity of a closed die of a screw injection molding machine, injecting the plasticized heat-conducting composite material melt obtained in the step B into the die cavity of the closed die at the temperature of 80 ℃, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at the cooling speed of 3 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 2-4 hours, and keeping the temperature of the oven at 60 ℃;
5) And (3) humidity conditioning: and (3) putting the antistatic household electrical appliance structural member product annealed in the step (4) into boiling water, and taking out to obtain a finished antistatic household electrical appliance structural member product.
The mass ratio of the ABS plastic to the PVC plastic is 1:1;
the mass ratio of the plastic (comprising ABS plastic and PVC plastic) to the antistatic additive in the step 1 is 20:1;
the mass ratio of the antistatic additive to the reinforcing agent is 1:1;
the antistatic additive consists of the following raw materials in parts by mass:
Figure SMS_8
the reinforcing agent consists of the following raw materials in parts by mass:
Figure SMS_9
test case
The antistatic household electrical appliance structural parts prepared in the above examples 1-3 were subjected to comparative test with household electrical appliance structural parts prepared according to the same adjustment without adding antistatic additive and reinforcing agent, and the test results are shown in table 1:
table 1 component detection.
Example 1 Example 2 Example 3 Comparative example
Surface resistance/Ω 10 5 10 5 10 5 10 4
Impact strength J/m 192 195 193 178
Tensile Strength/MPa 175 179 178 165
Flame retardant Properties V-0 V-0 V-0 V-1
According to the test data, the antistatic household electrical appliance structural part prepared by the pressurizing rapid injection molding process of the antistatic household electrical appliance structural part has good antistatic performance, structural strength and flame retardant effect.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, i.e. the present invention is not limited to the above embodiments, but is capable of being modified and varied in all ways according to the following claims and the detailed description.

Claims (1)

1. The pressurizing fast injection molding process of the antistatic household appliance structural part is characterized by comprising the following steps of:
1) And (3) drying: putting the raw materials into a vacuum dryer for vacuum drying to reduce the water content of the raw materials to 0.75%; the raw materials comprise ABS plastic, PVC plastic, antistatic additive and reinforcing agent;
2) And (3) pressurizing and plasticizing: putting the dried raw materials into a charging barrel of a screw injection molding machine for plasticizing, so that the raw materials become a heat-conducting composite material melt in a molten state, wherein the temperature of the charging barrel is 165 ℃, the plasticizing back pressure is 12Mpa, and the plasticizing time is 25min;
3) And (3) forming: placing a frame body of a structural member in a die cavity of a closed die of a screw injection molding machine, wherein the temperature of the closed die is 75 ℃, injecting the heat-conducting composite material melt plasticized in the step 2 into the die cavity of the closed die, rapidly cooling and shaping after the heat-conducting composite material melt is filled in the die cavity, injecting the heat-conducting composite material melt onto the frame body of the structural member at a cooling speed of 2 ℃/min, and opening the die to obtain an antistatic household appliance structural member product;
4) Annealing: placing the antistatic household appliance structural member product prepared in the step 3 into an oven, standing for 3 hours, and keeping the temperature of the oven at 55 ℃;
5) And (3) humidity conditioning: placing the antistatic household electrical appliance structural member product annealed in the step 4 into boiling water, and taking out to obtain an antistatic household electrical appliance structural member finished product;
the mass ratio of the ABS plastic to the PVC plastic is 1:1;
the mass ratio of the plastic to the antistatic additive in the step 1 is 20:1;
the mass ratio of the antistatic additive to the reinforcing agent is 1:1;
the antistatic additive consists of the following raw materials in parts by mass:
100 parts of aminopropyl dimethoxy silane
50 parts of graphite
22.5 parts of nano titanium dioxide particles
15 parts of polytetrafluoroethylene;
the reinforcing agent consists of the following raw materials in parts by mass:
fluorocarbon resin 100 parts
40 parts of methyl thiobutyrate
Dextran 20 parts
Tributyl citrate 10 parts.
CN202011327336.0A 2020-11-23 2020-11-23 Pressurized quick injection molding process for antistatic household appliance structural part Active CN113146927B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011327336.0A CN113146927B (en) 2020-11-23 2020-11-23 Pressurized quick injection molding process for antistatic household appliance structural part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011327336.0A CN113146927B (en) 2020-11-23 2020-11-23 Pressurized quick injection molding process for antistatic household appliance structural part

Publications (2)

Publication Number Publication Date
CN113146927A CN113146927A (en) 2021-07-23
CN113146927B true CN113146927B (en) 2023-05-09

Family

ID=76882451

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011327336.0A Active CN113146927B (en) 2020-11-23 2020-11-23 Pressurized quick injection molding process for antistatic household appliance structural part

Country Status (1)

Country Link
CN (1) CN113146927B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102010694B (en) * 2010-11-19 2013-11-27 东莞安尚崇光科技有限公司 Heat conducting composite material and injection molding process for combining same and LED metal shell
CN102173026B (en) * 2010-12-16 2015-01-14 施汉林 Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process
CN103396618B (en) * 2013-07-12 2015-11-25 安徽安远塑胶股份有限公司 A kind of anti-static plastic and preparation method thereof
CN104227915A (en) * 2014-07-24 2014-12-24 镇江洋溢汽车部件有限公司 Plastic shell manufacturing technique
CN106393564A (en) * 2016-11-22 2017-02-15 大连裕丰塑料制品有限公司 Polyethylene plastic molding process

Also Published As

Publication number Publication date
CN113146927A (en) 2021-07-23

Similar Documents

Publication Publication Date Title
CN101708655B (en) Method for manufacturing expanded polytetrafluoroethylene plate
CN103396596B (en) A kind of antistatic anti-aging plastics and preparation method thereof
CN108530854B (en) Preparation method of straw powder-PLA wood-plastic composite material
CN109206841A (en) A kind of high-strength abrasion-proof aromatic series composite material and preparation method and application
CN110982245A (en) Modified polyphenyl ether resin material and preparation method and application thereof
CN104559128B (en) A kind of preparation technology of household appliance shell composite
CN113146927B (en) Pressurized quick injection molding process for antistatic household appliance structural part
CN104497542B (en) A kind of preparation technology of power capacitor casing
CN104448772B (en) A kind of composite for household appliance shell
CN106084322A (en) A kind of low loss insulation and manufacture method thereof
CN112300516B (en) Anti-shrinkage PVC edge banding and preparation method thereof
CN108164923A (en) A kind of fiberglass reinforced PEEK/PES composite materials
CN104448773B (en) A kind of preparation technology of housing of TV set material
CN103578683A (en) Rubber magnetic strip used under low temperature and preparation method thereof
CN104231588A (en) Photovoltaic wiring box body material and preparing method thereof
CN109054157B (en) High-temperature-resistant nano cable material and preparation method thereof
CN110615984A (en) Low-mold-temperature injection-molded glass fiber reinforced high-temperature nylon and production process thereof
CN108250573A (en) A kind of halogen-free environment-friendly flame-proof polypropylene material of heat oxygen aging resistance and preparation method thereof
CN110951229B (en) High-toughness high-hardness PC material and preparation method thereof
CN109181213B (en) Modified PEEK composite material and preparation method thereof
CN110962287A (en) Forming process combining carbon fiber and injection molding
CN110437533B (en) Fiber modified board and application thereof
CN107488342B (en) Whisker filled polycarbonate and polyethylene glycol terephthalate composite material with high thermal stability and preparation method thereof
CN109438916A (en) Heat-resisting antistatic polyether-ether-ketone composite material of one kind and preparation method thereof
CN107828179A (en) A kind of modified engineered plastic

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant