CN110437577B - Low-smoke halogen-free flame-retardant ABS material for edge banding and preparation method thereof - Google Patents
Low-smoke halogen-free flame-retardant ABS material for edge banding and preparation method thereof Download PDFInfo
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- CN110437577B CN110437577B CN201910801724.9A CN201910801724A CN110437577B CN 110437577 B CN110437577 B CN 110437577B CN 201910801724 A CN201910801724 A CN 201910801724A CN 110437577 B CN110437577 B CN 110437577B
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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
- 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
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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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
Abstract
The invention relates to the technical field of edge banding material modification, in particular to a low-smoke halogen-free flame-retardant ABS material for an edge banding and a preparation method thereof, wherein the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following raw materials: ABS resin, halogen-free flame retardant filler, smoke suppressant, surface modifier and lubricant; wherein the mesh number of the halogen-free flame-retardant filler is 7500-10000 meshes. The compatibility of the halogen-free flame-retardant filler and the smoke suppressant with the ABS resin is increased, so that the flame-retardant smoke suppressant effect of the ABS material is improved, the ABS material is reinforced, the phenomenon that the mechanical property of the ABS material is reduced due to excessive filling of the halogen-free flame-retardant filler and the smoke suppressant, the ABS material is embrittled is avoided, the edge banding produced by the ABS material is prevented from being brittle, and the corner collapse probability of the edge banding is reduced.
Description
Technical Field
The invention relates to the technical field of edge banding material modification, in particular to a low-smoke halogen-free flame-retardant ABS material for an edge banding and a preparation method thereof.
Background
According to the knowledge, when a fire disaster occurs, toxic gas and highly toxic dense smoke released during material combustion are generally harmful to a human body, and the strongly diffused dense smoke enables a victim to distinguish the direction, so that the residence time on the fire scene is prolonged, the risk that the victim inhales the toxic smoke and is poisoned is increased, and therefore, in order to avoid and reduce secondary damage caused by the fire disaster and the fire disaster as far as possible, the low-smoke halogen-free flame-retardant home decoration material is more and more favored by people.
Edge banding strips commonly used in home decoration are generally classified into log edge banding strips, PVC edge banding strips, and ABS edge banding strips. Although the log edge banding is simple to manufacture, the cost is high, and particularly, along with the gradual improvement of the consciousness of protecting forest resources of people, the raw material source of the log edge banding is limited, so that the log edge banding is not beneficial to environmental protection. And the PVC edge sealing strip is easy to decompose a large amount of highly toxic and corrosive hydrogen chloride gas after being heated. According to the related information, the light transmittance of the smoke emitted by the burning of PVC is below 15%, namely, the naked visual distance of people in the environment of dense smoke is only about 2m, which brings great difficulty to the fire rescue work. The ABS resin is used as a high-end edge banding material, and the molecular chain of the ABS resin does not contain halogen, so that the precondition is created for developing a low-smoke halogen-free flame-retardant edge banding material.
As an effective inorganic flame retardant for realizing the low-smoke halogen-free flame-retardant ABS material, such as magnesium hydroxide and aluminum hydroxide, a large amount of filling is needed to achieve the expected flame-retardant effect, the physical and mechanical properties of the ABS are greatly influenced, particularly the impact strength is greatly reduced, even the ABS is converted into a brittle material, so that the corner breakage phenomenon is generated when the edge banding is performed at home.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the low-smoke halogen-free flame-retardant ABS material for the edge banding, the mesh number of the halogen-free flame-retardant filler is controlled to be 7500-10000 meshes, the surface modification treatment is carried out on the halogen-free flame-retardant filler and the smoke suppressant, the compatibility of the halogen-free flame-retardant filler and the smoke suppressant with ABS resin is increased, the flame-retardant and smoke suppressant effect of the ABS material is improved, the reinforcing effect on the ABS material is also realized, the phenomenon that the mechanical property of the ABS material is reduced due to the excessive filling of the halogen-free flame-retardant filler and the smoke suppressant to cause embrittlement of the ABS material is avoided, the brittleness of the edge banding produced by the ABS material is avoided, the impact strength of the ABS material is improved, and the corner collapse probability of the edge banding is reduced.
The invention also aims to provide a preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding, which is simple to operate, convenient to control and low in production cost and can be used for large-scale production.
The purpose of the invention is realized by the following technical scheme: a low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 7500-10000 meshes.
The low-smoke halogen-free flame-retardant ABS material for the edge banding takes ABS resin as a main raw material, does not contain halogen, avoids poisoning after a human body inhales the ABS material due to the generation of halogen compounds with high toxicity in the combustion process, and improves the flame-retardant and smoke-suppression effects, reduces the influence of the combustion process of the ABS material on the visibility of the environment and improves the escape probability of the human body by adding the flame retardant and the smoke suppressant; the mesh number of the halogen-free flame-retardant filler is controlled to be 7500-10000 meshes, the surface modification treatment is carried out on the halogen-free flame-retardant filler and the smoke suppressant, the compatibility of the halogen-free flame-retardant filler and the smoke suppressant with ABS resin is increased, the flame-retardant and smoke suppressant of the ABS material is improved, the reinforcing effect on the ABS material is also realized, the embrittlement of the ABS material caused by the reduction of the mechanical property of the ABS material due to the excessive filling of the halogen-free flame-retardant filler and the smoke suppressant is avoided, the brittleness of an edge sealing strip produced by the ABS material is avoided, the impact strength of the ABS material is improved, and the corner collapse probability of the edge sealing strip is reduced; the mesh number of the halogen-free flame-retardant filler is controlled to be 7500-10000 meshes, if the mesh number of the halogen-free flame-retardant filler is lower than 7500 meshes, the filler particles are large, material defects are easily caused when the filler is filled into ABS resin, and the damage of the material is usually caused by the defects, so that the mechanical property of the ABS material is reduced, and the ABS material is embrittled; if the mesh number of the halogen-free flame-retardant filler is more than 10000 meshes, the production cost is increased, the filler with too fine particles is easy to agglomerate, and the filler is not easy to disperse into ABS resin during processing, but the impact strength of ABS is reduced. The added lubricant improves the fluidity of the edge strip material in the processing process and the demoulding performance of products, and reduces mixing torque and load, thereby preventing the thermal degradation of the edge strip material, reducing the processing difficulty and saving energy consumption. More preferably, the weight part of the halogen-free flame retardant filler is 50-100 parts, so that the flame retardant effect is improved.
Preferably, the ABS resin is an ABS resin with polybutadiene content of 20-30 wt%; the melt flow rate of the ABS resin is 15-50 g/min.
By adopting the technical scheme, the content of polybutadiene in the ABS resin is controlled to be 20-30 wt%, the effect of coating the halogen-free flame-retardant filler and the smoke suppressant is better, the bonding strength of the halogen-free flame-retardant filler and the smoke suppressant with the ABS resin is improved, if the content of polybutadiene is lower than 20 wt%, the effect of coating the halogen-free flame-retardant filler and the smoke suppressant is poor, the flame-retardant smoke suppressant is not beneficial, and the mechanical property of the ABS material is also reduced; if the content of polybutadiene exceeds 30 wt%, the acrylonitrile-styrene copolymer is reduced, which directly results in the reduction of the tensile strength of the ABS material and the reduction of the product quality of the edge banding. The melt flow rate of the ABS resin is measured according to ISO-1133 at 220 ℃/10kg, the melt flow rate of the ABS resin is controlled to be 15-50g/min, the processing of the ABS material is facilitated, the processing time is shortened, and the degradation of the ABS resin and the decomposition of the halogen-free flame-retardant filler caused by excessive heat absorption due to overlong processing time are avoided.
Preferably, the halogen-free flame retardant filler is at least one of magnesium hydroxide, aluminum hydroxide and magnesium aluminum hydrotalcite.
More preferably, the halogen-free flame retardant filler is magnesium hydroxide, aluminum hydroxide and magnesium aluminum hydrotalcite in a weight ratio of 3: 1: 3-6, and mixing. The initial decomposition temperature section of the aluminum hydroxide is lower, and the initial decomposition temperature section of the magnesium hydroxide is higher; when the material is filled highly, the effect of the aluminum hydroxide is better than that of the magnesium hydroxide in the aspects of inhibiting the temperature rise of the material, reducing the heat release quantity of the surface of the material, improving the spontaneous combustion temperature of the material and prolonging the ignition time; when the flame-retardant ABS material is filled at a low temperature, the spontaneous combustion temperature of the material is increased, the oxygen index is increased, and the carbonization effect is promoted, the magnesium hydroxide is superior to aluminum hydroxide, the magnesium-aluminum hydrotalcite initial decomposition temperature section has both a low temperature section and a high temperature section, the flame-retardant temperature range is widened, the flame-retardant ABS material has three functions of flame retardance, smoke abatement and filling, the flame-retardant ABS material has the advantages of aluminum hydroxide and magnesium hydroxide flame retardants, the three are compounded and cooperate with each other to improve the flame-retardant effect of the ABS material, and the halogen-free flame-retardant filler is lower in addition amount to achieve a better flame-retardant effect.
Preferably, the smoke suppressant is at least one of ferrocene, benzoyl ferrocene, ferric acetylacetonate, zinc borate and molybdenum trioxide.
More preferably, the smoke suppressant is ferrocene, ferric acetylacetonate and molybdenum trioxide in a weight ratio of 1-2: 1: 3-6, when the ABS material is burnt, the smoke suppressant compounded by adopting the specific proportion can react with aromatic compounds generated by burning the ABS material in a gas phase to achieve an ideal smoke suppression effect.
Preferably, the surface modifier is a silane coupling agent or a titanate coupling agent.
The halogen-free flame-retardant filler and the smoke suppressant are subjected to surface modification treatment, the compatibility of the halogen-free flame-retardant filler and the smoke suppressant with the ABS resin is increased, the mesh limitation of the halogen-free flame-retardant filler is combined, the flame-retardant smoke suppressant effect of the ABS material is improved, the reinforcing effect of the ABS material is also realized, the embrittlement of the ABS material caused by the reduction of the mechanical property of the ABS material due to the excessive filling of the halogen-free flame-retardant filler and the smoke suppressant is avoided, the brittleness of edge strips produced by the ABS material is further avoided, the impact strength of the ABS material is improved, and the corner breakage probability of the edge strips is reduced. More preferably, the surface modifier is a silane coupling agent, and the silane coupling agent is KH550, KH560, KH470 or KH 570.
Preferably, the lubricant is at least one of paraffin, polyethylene wax, oxidized polyethylene wax, stearic acid, magnesium stearate and ethylene bis stearamide.
By adopting the technical scheme, the flowability of the edge banding material in the processing process and the demolding performance of a product are improved, and the mixing torque and the load are reduced, so that the thermal degradation of the edge banding material is prevented, the processing difficulty can be reduced, and the energy consumption is saved. The paraffin is high-melting-point paraffin, and the melting point temperature reaches 55-72 ℃. More preferably, the lubricant is polyethylene wax and magnesium stearate in a weight ratio of 1-2: 0.5-1, can reduce the processing difficulty and has better effect.
The other purpose of the invention is realized by the following technical scheme: the preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2), blending the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating at the rotating speed of 800-1500r/min and the temperature of 60-90 ℃ for 15-30min, then mixing the ABS resin and other raw materials, and stirring at the rotating speed of 500-600r/min and the temperature of 65-95 ℃ for 3-5min to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding is simple to operate, convenient to control and low in production cost, and can be used for large-scale production. In the step (S2), the halogen-free flame retardant filler, the smoke suppressant and the surface modifier are blended and modified to be conveniently combined with the ABS resin and uniformly dispersed.
Preferably, in the step (S2), the ABS resin is dried at a temperature of 70-90 ℃ until its overall humidity is less than 8%.
By adopting the technical scheme, the humidity of the ABS resin is controlled, so that the phenomenon that the tensile strength of the ABS material is reduced due to too large or too small humidity is avoided, and the stamping strength is improved.
Preferably, in the step (S3), the screw rotation speed of the parallel twin-screw granulator is 60 to 150r/min, and the temperatures of the zones of the parallel twin-screw granulator are set as follows: the temperature of the first zone is 195-.
By adopting the technical scheme, the combined melt flow rate is 15-50g/min, so that the ABS material can be conveniently extruded, the extrusion performance is adapted, and the mechanical property of the ABS material is prevented from being reduced.
The invention has the beneficial effects that: according to the low-smoke halogen-free flame-retardant ABS material for the edge banding, the mesh number of the halogen-free flame-retardant filler is controlled to be 7500-10000 meshes, the surface modification treatment is performed on the halogen-free flame-retardant filler and the smoke suppressant, the compatibility of the halogen-free flame-retardant filler and the smoke suppressant with the ABS resin is increased, the flame-retardant smoke suppressant effect of the ABS material is improved, the reinforcing effect of the ABS material is also realized, the embrittlement of the ABS material caused by the reduction of the mechanical property of the ABS material due to the excessive filling of the halogen-free flame-retardant filler and the smoke suppressant is avoided, the embrittlement of the edge banding produced by the ABS material is avoided, the impact strength of the ABS material is improved, and the corner collapse probability of the edge banding is reduced.
The preparation method disclosed by the invention is simple to operate, convenient to control and low in production cost, and can be used for large-scale production.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 8000 meshes.
The ABS resin is an ABS resin with polybutadiene content of 30 wt%; the melt flow rate of the ABS resin was 50 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 550.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 30min at the rotating speed of 1500r/min and the temperature of 90 ℃, then mixing the ABS resin and other raw materials, and stirring for 5min at the rotating speed of 600r/min and the temperature of 95 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 90 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 60r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature is 205 ℃, the second zone temperature is 215 ℃, the third zone temperature is 225 ℃, the fourth zone temperature is 225 ℃, the fifth zone temperature is 225 ℃, the sixth zone temperature is 225 ℃, the seventh zone temperature is 220 ℃, the eighth zone temperature is 215 ℃ and the head temperature is 235 ℃.
Example 2
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 7500 meshes.
The ABS resin is an ABS resin with the polybutadiene content of 29 wt%; the melt flow rate of the ABS resin was 48 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 560.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 28min at the rotating speed of 1400r/min and the temperature of 85 ℃, then mixing the ABS resin and other raw materials, and stirring for 4min at the rotating speed of 550r/min and the temperature of 90 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at 85 ℃ until its overall humidity is below 8%.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 70r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature is 200 ℃, the second zone temperature is 210 ℃, the third zone temperature is 220 ℃, the fourth zone temperature is 220 ℃, the fifth zone temperature is 220 ℃, the sixth zone temperature is 220 ℃, the seventh zone temperature is 215 ℃, the eighth zone temperature is 210 ℃ and the head temperature is 230 ℃.
Example 3
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 10000 meshes.
The ABS resin is an ABS resin with polybutadiene content of 28 wt%; the melt flow rate of the ABS resin was 45 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 570.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 25min at the rotating speed of 1300r/min and the temperature of 80 ℃, then mixing the ABS resin and other raw materials, and stirring for 3min at the rotating speed of 500r/min and the temperature of 85 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 80 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 80r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature is 195 ℃, the second zone temperature is 205 ℃, the third zone temperature is 215 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 215 ℃, the sixth zone temperature is 215 ℃, the seventh zone temperature is 210 ℃, the eighth zone temperature is 205 ℃ and the head temperature is 225 ℃.
Example 4
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 8000 meshes.
The ABS resin is an ABS resin with the polybutadiene content of 23 wt%; the melt flow rate of the ABS resin is 20 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 470.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) blending the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 20min at the rotating speed of 1000r/min and the temperature of 70 ℃, then mixing the ABS resin and other raw materials, and stirring for 5min at the rotating speed of 600r/min and the temperature of 75 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 75 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 150r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature is 195 ℃, the second zone temperature is 205 ℃, the third zone temperature is 215 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 215 ℃, the sixth zone temperature is 215 ℃, the seventh zone temperature is 210 ℃, the eighth zone temperature is 205 ℃ and the head temperature is 225 ℃.
Example 5
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 7500 meshes.
The ABS resin is an ABS resin with polybutadiene content of 22 wt%; the melt flow rate of the ABS resin was 18 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 550.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 18min at the rotating speed of 900r/min and the temperature of 65 ℃, then mixing the ABS resin and other raw materials, and stirring for 4min at the rotating speed of 550r/min and the temperature of 70 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 70 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw granulator is 135r/min, and the temperatures of the zones of the parallel twin-screw granulator are set as follows: the first zone temperature is 198 ℃, the second zone temperature is 208 ℃, the third zone temperature is 218 ℃, the fourth zone temperature is 218 ℃, the fifth zone temperature is 218 ℃, the sixth zone temperature is 218 ℃, the seventh zone temperature is 218 ℃, the eighth zone temperature is 208 ℃ and the head temperature is 228 ℃.
Example 6
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 10000 meshes.
The ABS resin is an ABS resin with polybutadiene content of 20 wt%; the melt flow rate of the ABS resin was 15 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 560.
The lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 2: 1 are mixed.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) blending the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 15min at the rotating speed of 800r/min and the temperature of 60 ℃, then mixing the ABS resin and other raw materials, and stirring for 3min at the rotating speed of 500r/min and the temperature of 65 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 75 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 120r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature was 203 ℃, the second zone temperature was 213 ℃, the third zone temperature was 223 ℃, the fourth zone temperature was 223 ℃, the fifth zone temperature was 223 ℃, the sixth zone temperature was 223 ℃, the seventh zone temperature was 213 ℃, the eighth zone temperature was 213 ℃, and the head temperature was 233 ℃.
Example 7
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 8000 meshes.
The ABS resin is an ABS resin with the polybutadiene content of 26 wt%; the melt flow rate of the ABS resin was 35 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 570.
The lubricant is polyethylene wax and magnesium stearate in a weight ratio of 1: 0.5, and mixing.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 25min at the rotating speed of 1300r/min and the temperature of 80 ℃, then mixing the ABS resin and other raw materials, and stirring for 5min at the rotating speed of 600r/min and the temperature of 85 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at 85 ℃ until its overall humidity is below 8%.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 110r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature was 196 deg.C, the second zone temperature was 208 deg.C, the third zone temperature was 220 deg.C, the fourth zone temperature was 216 deg.C, the fifth zone temperature was 216 deg.C, the sixth zone temperature was 216 deg.C, the seventh zone temperature was 216 deg.C, the eighth zone temperature was 206 deg.C, and the head temperature was 226 deg.C.
Example 8
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 10000 meshes.
The ABS resin is an ABS resin with the polybutadiene content of 25 wt%; the melt flow rate of the ABS resin was 32 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 570.
The lubricant is polyethylene wax and magnesium stearate in a weight ratio of 1: 0.5, and mixing.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) mixing the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 23min at the rotation speed of 1200r/min and the temperature of 75 ℃, then mixing the ABS resin and other raw materials, and stirring for 4min at the rotation speed of 580r/min and the temperature of 80 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 80 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 100r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature was 199 ℃, the second zone temperature was 209 ℃, the third zone temperature was 219 ℃, the fourth zone temperature was 219 ℃, the fifth zone temperature was 219 ℃, the sixth zone temperature was 219 ℃, the seventh zone temperature was 219 ℃, the eighth zone temperature was 209 ℃ and the head temperature was 229 ℃.
Example 9
A low-smoke halogen-free flame-retardant ABS material for edge banding comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 10000 meshes.
The ABS resin is an ABS resin with polybutadiene content of 24 wt%; the melt flow rate of the ABS resin was 30 g/min.
The halogen-free flame-retardant filler is magnesium aluminum hydrotalcite.
The smoke suppressant is ferrocene.
The surface modifier is a silane coupling agent.
The silane coupling agent is KH 560.
The lubricant is polyethylene wax and magnesium stearate in a weight ratio of 1: 0.5, and mixing.
The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2) blending the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating for 20min at the rotating speed of 1000r/min and the temperature of 70 ℃, then mixing the ABS resin and other raw materials, and stirring for 3min at the rotating speed of 500r/min and the temperature of 75 ℃ to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding.
In the step (S2), the ABS resin is dried at a temperature of 75 ℃ until its overall humidity reaches 8% or less.
In the step (S3), the screw rotation speed of the parallel twin-screw pelletizer is 90r/min, and the temperatures of the zones of the parallel twin-screw pelletizer are set as follows: the first zone temperature is 195 ℃, the second zone temperature is 215 ℃, the third zone temperature is 215 ℃, the fourth zone temperature is 225 ℃, the fifth zone temperature is 225 ℃, the sixth zone temperature is 215 ℃, the seventh zone temperature is 220 ℃, the eighth zone temperature is 205 ℃ and the head temperature is 235 ℃.
Example 10
This example differs from example 5 in that: the halogen-free flame-retardant filler is magnesium hydroxide, aluminum hydroxide and magnesium-aluminum hydrotalcite in a weight ratio of 3: 1: 5, mixing the components; the smoke suppressant is ferrocene, acetylacetone iron and molybdenum trioxide in a weight ratio of 2: 1: 6, mixing; the lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 1.5: 0.8, and mixing.
Example 11
This example differs from example 5 in that: the halogen-free flame-retardant filler is magnesium hydroxide, aluminum hydroxide and magnesium-aluminum hydrotalcite in a weight ratio of 3: 1: 3, mixing; the smoke suppressant is ferrocene, acetylacetone iron and molybdenum trioxide in a weight ratio of 1: 1: 3, mixing; the lubricant is polyethylene wax and magnesium stearate according to a weight ratio of 1.2: 0.9, and mixing.
Comparative example 1
This comparative example differs from example 5 in that: the mesh number of the halogen-free flame-retardant filler is 5000 meshes.
Comparative example 2
This comparative example differs from example 5 in that: the mesh number of the halogen-free flame-retardant filler is 12000 meshes.
Comparative example 3
This comparative example differs from example 5 in that: the halogen-free flame-retardant filler is phosphate.
Comparative example 4
This comparative example differs from example 5 in that: 3 parts by weight of a toughening agent is also added into the low-smoke halogen-free flame-retardant ABS material for the edge sealing strip, and the toughening agent is a polyolefin elastomer.
Comparative example 5
This comparative example differs from example 5 in that: in the step (S2), the ABS resin is not dried.
Example 12 Performance testing
The ABS materials prepared in examples 1-11 and comparative examples 1-5 were tested for melt index, tensile strength, impact strength, Rockwell hardness, heat distortion temperature, shrinkage resistance, notch chipping, flame retardancy, and smoke density by the following methods:
melt index: the standard ISO 1133 is adopted, the temperature is 220 ℃, the load is 10kg, and 5-35g/min is required.
Tensile strength: the test speed is 50mm/min and is required to be more than 400kg/cm by adopting ISO 527 standard and adopting 1A dumbbell type test sample for testing2。
Impact strength: adopting ISO 179-1eA standard simply supported beam, placing at-30 deg.C for 6 hr at normal temperature of 23 + -2 deg.C and low temperature of-30 + -2 deg.C, and testing at-30 deg.C. The normal temperature requirement is more than 20kJ/m2The low temperature requirement is more than 5kJ/m2。
Rockwell hardness: using ASTM D785 standard, a value of greater than 95 is required, as measured on the R scale.
Heat distortion temperature: the method adopts ISO 75 standard A method, the sample is not annealed, the thickness of the sample is 4mm, and the requirement is higher than 85 ℃.
Shrinkage resistance: a single-screw extruder (model YJ-50, manufactured by Shuanglin mechanical Co., Ltd., Zhejiang) was used to extrude edge banding strips of 1.0mm × 22mm, and the adhesive passes through the German adhesive king glue. Edge sealing is carried out by an edge sealing machine (Nanxing Wood working machinery Co., Ltd., model MFB60CA, Fule brand hot melt adhesive) at room temperature (18 +/-2) DEG C. The edge-sealed medium density fiberboard (200 mm. times.100 mm. times.18 mm) was sawn flat on a sliding table saw (Nanxing Wood working machine Co., Ltd., model NJ1116) and the length a of the sample edge sealing strip was measured to the nearest 0.01 mm. A sample is horizontally placed in a test chamber of a cold-hot impact tester (BYT-C4 model, Baoyutong detection equipment Co., Ltd.) and is placed at a high temperature of 65 ℃ for 2h and a low temperature of-20 ℃ for 2h and 4h for 2 times of circulation, after the test is finished, the sample is taken out and is placed at a room temperature for 1-1.5 h, and the length b of a sample edge sealing strip is measured to be accurate to 0.01 mm. The shrinkage (%) W ═ (a-b)/a × 100%, to the nearest 0.01%, requires less than 0.2%.
And (3) grooving and corner breaking test: a single-screw extruder (model YJ-50, manufactured by Shuanglin mechanical Co., Ltd., Zhejiang) was used to extrude edge banding strips of 1.0mm × 22mm, and the adhesive passes through the German adhesive king glue. Edge sealing is carried out by an edge sealing machine (Nanxing Wood working machinery Co., Ltd., model MFB60CA, Fule brand hot melt adhesive) at room temperature (18 +/-2) DEG C. The edge-sealed shaving board (200mm multiplied by 100mm multiplied by 18mm) is sawn flat at two ends on a sliding table saw (Nanxing wood working machinery Co., Ltd., model NJ1116), and is kept at a constant temperature for more than 4h to be grooved. Adjusting an universal circular sawing machine with an inclinable table top (model MJ143, 9mm in blade thickness and 6mm in slotting depth, New Messajous mechanical equipment Limited company in Shundzone of Fushan City), so that the slotting depth is 6 +/-2 mm, the slotting distance is 40 +/-20 mm from a sealing end, each sample is respectively opened twice in a forward slot and a reverse slot, and the unsmooth sealing strip at the slotting position is the breakout. The corner collapse phenomenon is not required.
Flame retardancy: the UL94 standard is adopted, the thickness of the sample is 0.8mm, and the requirement is to reach V-0.
Smoke density: the standard GB/T8627 is adopted, the specification of a sample is (25.4 +/-0.3) mmX (6.2 +/-0.3) mm, and the smoke density is required to be less than 400.
The test results are shown in table 1 below:
TABLE 1
As can be seen from the detection data of the embodiments 1 to 11 in Table 1, the low-smoke halogen-free flame-retardant ABS material for the edge banding not only meets the application requirements of the edge banding, but also has good flame-retardant and smoke-suppression effects, does not affect the tensile strength and impact strength of the edge banding, and has no corner collapse phenomenon.
As can be seen from table 1 above, compared with example 5, the mesh number of the halogen-free flame retardant filler used in comparative example 1 is 5000 meshes, which reduces the tensile strength and impact strength, and has high rockwell hardness, high brittleness and a breakout angle; the mesh number of the halogen-free flame retardant filler used in the comparative example 2 is 12000 meshes, the tensile strength and the impact strength are also reduced, the Rockwell hardness is high, the brittleness is high, and an obvious corner collapse occurs; the halogen-free flame-retardant filler adopted by the invention is controlled to be 7500-10000 meshes, so that the flame-retardant and smoke-inhibiting effects can be ensured, the situation that the tensile strength and the impact strength are reduced and the brittleness is large can be avoided, and the action effect is obvious.
Compared with the embodiment 5, the halogen-free flame retardant filler used in the comparative example 3 is phosphate, even though the phosphate can ensure that the tensile strength and the impact strength are not reduced, the phosphate is an organic phosphorus flame retardant which has better compatibility with ABS resin than the halogen-free flame retardant filler of the present application, and has a plasticizing effect on ABS resin and a reduced Vicat softening point of ABS material due to the liquid, so that the low-smoke halogen-free flame retardant ABS material of the present invention has a low thermal deformation temperature, is not favorable for the application of edge sealing strips, has a smoke density higher than that of the embodiment 5, cannot improve the smoke suppression effect under the combined action of the smoke suppression agent and the smoke suppression agent, has a price higher than that of the halogen-free flame retardant filler of the present application, is not favorable for reducing the production cost, and reduces the production benefits by using the organic phosphorus flame retardant to replace the halogen-free flame retardant filler of the present application.
Compared with the embodiment 5, although 3 parts by weight of the polyolefin elastomer toughening agent is additionally added in the comparative example 4, the tensile strength and the impact strength of the composite material are both reduced, because the addition amount of the halogen-free flame-retardant filler is high, a phase is formed by adding more toughening agents, the cohesiveness of the ABS phase and the halogen-free flame-retardant filler phase is damaged, the tensile strength and the impact strength are both reduced, and the added toughening agent causes the low heat deformation temperature of the low-smoke halogen-free flame-retardant ABS material, which is not beneficial to the application of the edge sealing strip, and the additionally added toughening agent increases the raw material cost and reduces the production benefit.
Compared with example 5, in the step (S2) of comparative example 5, the ABS resin is not dried, the tensile strength and impact strength are both significantly reduced, and the corner break occurs, which indicates that in the step (S2) of the present invention, drying the ABS resin until the humidity reaches 8% or less is more beneficial to improving the tensile strength and impact strength, and avoiding the corner break of the edge banding made of ABS material.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a low smoke and zero halogen flame retardant ABS material for banding which characterized in that: the feed comprises the following raw materials in parts by weight:
wherein the mesh number of the halogen-free flame-retardant filler is 7500-10000 meshes;
the ABS resin is an ABS resin with polybutadiene content of 20-30 wt%; the melt flow rate of the ABS resin is 15-50 g/min;
the halogen-free flame-retardant filler is magnesium hydroxide, aluminum hydroxide and magnesium-aluminum hydrotalcite in a weight ratio of 3: 1: 3-6, mixing;
the preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding comprises the following steps:
(S1) weighing the raw materials in parts by weight for later use;
(S2), blending the halogen-free flame-retardant filler, the smoke suppressant and the surface modifier, treating at the rotating speed of 800-1500r/min and the temperature of 60-90 ℃ for 15-30min, then mixing the ABS resin and other raw materials, and stirring at the rotating speed of 500-600r/min and the temperature of 65-95 ℃ for 3-5min to obtain a mixture;
(S3) feeding the mixture obtained in the step (S2) into a parallel twin-screw granulator for melting, extruding and granulating to obtain the low-smoke halogen-free flame-retardant ABS material for the edge banding;
in the step (S2), the ABS resin is dried at a temperature of 70-90 ℃ until its overall humidity reaches 8% or less.
2. The low-smoke halogen-free flame-retardant ABS material for the edge banding according to claim 1, characterized in that: the smoke suppressant is at least one of ferrocene, benzoyl ferrocene, ferric acetylacetonate, zinc borate and molybdenum trioxide.
3. The low-smoke halogen-free flame-retardant ABS material for the edge banding according to claim 1, characterized in that: the surface modifier is a silane coupling agent or a titanate coupling agent.
4. The low-smoke halogen-free flame-retardant ABS material for the edge banding according to claim 1, characterized in that: the lubricant is at least one of paraffin, polyethylene wax, oxidized polyethylene wax, stearic acid, magnesium stearate and ethylene bisstearamide.
5. The preparation method of the low-smoke halogen-free flame-retardant ABS material for the edge banding according to claim 1, characterized in that: in the step (S3), the screw rotating speed of the parallel double-screw granulator is 60-150r/min, and the temperature of each zone of the parallel double-screw granulator is set as follows: the temperature of the first zone is 195-.
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