Expandable polystyrene particles with high foaming ratio and preparation method thereof

Abstract

The invention relates to the technical field of preparation of expandable polystyrene particles, and discloses expandable polystyrene particles with high foaming ratio and a preparation method of the expandable polystyrene particles. The invention discloses a styrene-butadiene rubber which is prepared from the following components in percentage by weight: 10%-20% of styrene monomer, 50%-60% of deionized water, 1.5%-1.7% of pentane, 1.1%-1.3% of butane, 1.3%-1.5% of benzoyl peroxide, 1.3%-1.5% of tert-butyl peroxybenzoate, 0.6%-0.8% of dicumyl peroxide, 0.1%-0.3% of calcium phosphate, 0.2%-0.4% of calcium carbonate, 0.3%-0.5% of talcum powder, 0.4%-0.6% of sodium bicarbonate, 0.1%-0.3% of citric acid and 0.1%-0.3% of calcium stearate. 0.2%-0.4% of zinc stearate and 0.2%-0.4% of an antioxidant. According to the invention, by changing the types of the raw materials and the auxiliary materials, changing the preparation proportion and changing the manufacturing steps, the expandable polystyrene particles with high foaming ratio contain a large amount of tiny bubbles, and the bubbles can effectively absorb and disperse energy when being impacted by external force, so that the product has good buffer performance.

Description

Technical Field

[0001] The present invention relates to the technical field of expandable polystyrene particle preparation, in particular to expandable polystyrene particles with a high expansion ratio and a preparation method thereof. Background Art

[0002] Polystyrene is an important thermoplastic synthesized from styrene monomers through a free radical polycondensation reaction. Expandable polystyrene is a polystyrene product with a blowing agent added. It has a unique foaming structure and appears as colorless, transparent or white beads. It contains a low-boiling-point blowing agent. When heated, its volume can increase 50 times, forming a foam plastic with properties such as heat insulation, sound insulation, shock absorption, water resistance, acid resistance, and alkali resistance. It is used to produce molded polystyrene insulation boards, which are widely used in roof insulation and building walls. With economic development and improved living standards, demand in the fields of construction, packaging, electronic and electrical products continues to grow. In particular, it has broad market prospects in the fields of building energy conservation and cold chain logistics. With increasingly stringent environmental regulations and increasing environmental awareness, the expandable polystyrene industry is developing in a green, environmentally friendly, and sustainable direction. Environmentally friendly expandable polystyrene will become the mainstream of the future market.

[0003] As people's lives continue to change, the use of polystyrene products has become more and more common, and expandable polystyrene particles with high foaming ratio, as one of the products, are becoming more and more common in people's daily lives. However, the traditional preparation method results in poor cushioning performance of the final product, which greatly limits its use. Therefore, a new preparation method is now proposed to solve this technical problem. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides expandable polystyrene particles with a high foaming ratio and a preparation method thereof, which have advantages such as good cushioning properties and solve the problem of poor cushioning properties of the product caused by the traditional preparation method mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the purpose of improving the cushioning performance mentioned in the above background technology, the present invention provides the following technical solution: expandable polystyrene particles with a high foaming ratio and a preparation method thereof, comprising the following raw materials and auxiliary materials: the raw material components and their weight proportions are: styrene monomer 10%-20%, deionized water 50%-60%, pentane 1.5%-1.7%, butane 1.1%-1.3%, benzoyl peroxide 1.3%-1. 5%, tert-butyl perbenzoate 1.3%-1.5%, dicumyl peroxide 0.6%-0.8%, calcium phosphate 0.1%-0.3%, calcium carbonate 0.2%-0.4%, talc 0.3%-0.5%, sodium bicarbonate 0.4%-0.6%, citric acid 0.1%-0.3%, calcium stearate 0.1%-0.3%, zinc stearate 0.2%-0.4%, antioxidant 0.2%-0.4%;

[0008] The auxiliary material components and their weight proportions are: 0.1%-0.3% of trioctyl phosphate, 0.5%-0.7% of phthalate, 1.1%-1.3% of epoxidized soybean oil, 3.3%-3.5% of hexabromocyclododecane, 1.4%-1.6% of decabromodiphenyl ether, 1.3%-1.5% of sodium dodecylbenzenesulfonate, 0.1%-0.3% of sodium lauryl sulfate, 0.1%-0.3% of nonionic surfactant, and 0.3%-0.5% of silicon dioxide.

[0009] Preferably, the raw material components and their weight proportions are: styrene monomer 10%, deionized water 50%, pentane 1.5%, butane 1.1%, benzoyl peroxide 1.3%, tert-butyl perbenzoate 1.3%, dicumyl peroxide 0.6%, calcium phosphate 0.1%, calcium carbonate 0.2%, talc 0.3%, sodium bicarbonate 0.4%, citric acid 0.1%, calcium stearate 0.1%, zinc stearate 0.2%, and antioxidant 0.2%;

[0010] The auxiliary material components and their weight proportions are: 0.1% trioctyl phosphate, 0.5% phthalate, 1.1% epoxidized soybean oil, 3.3% hexabromocyclododecane, 1.4% decabromodiphenyl ether, 1.3% sodium dodecylbenzenesulfonate, 0.1% sodium lauryl sulfate, 0.1% nonionic surfactant, and 0.3% silicon dioxide.

[0011] Preferably, the raw material components and their weight proportions are: styrene monomer 20%, deionized water 60%, pentane 1.7%, butane 1.3%, benzoyl peroxide 1.5%, tert-butyl perbenzoate 1.5%, dicumyl peroxide 0.8%, calcium phosphate 0.3%, calcium carbonate 0.4%, talc 0.5%, sodium bicarbonate 0.6%, citric acid 0.3%, calcium stearate 0.3%, zinc stearate 0.4%, and antioxidant 0.4%;

[0012] The auxiliary material components and their weight proportions are: 0.3% trioctyl phosphate, 0.7% phthalate, 1.3% epoxidized soybean oil, 3.5% hexabromocyclododecane, 1.6% decabromodiphenyl ether, 1.5% sodium dodecylbenzenesulfonate, 0.3% sodium lauryl sulfate, 0.3% nonionic surfactant, and 0.5% silicon dioxide.

[0013] Preferably, the raw material components and their weight proportions are: styrene monomer 15%, deionized water 55%, pentane 1.6%, butane 1.2%, benzoyl peroxide 1.4%, tert-butyl perbenzoate 1.4%, dicumyl peroxide 0.7%, calcium phosphate 0.2%, calcium carbonate 0.3%, talc 0.4%, sodium bicarbonate 0.5%, citric acid 0.2%, calcium stearate 0.2%, zinc stearate 0.3%, and antioxidant 0.3%;

[0014] The auxiliary material components and their weight proportions are: 0.2% trioctyl phosphate, 0.6% phthalate, 1.2% epoxidized soybean oil, 3.4% hexabromocyclododecane, 1.5% decabromodiphenyl ether, 1.4% sodium dodecylbenzenesulfonate, 0.2% sodium lauryl sulfate, 0.2% nonionic surfactant, and 0.4% silicon dioxide.

[0015] Preferably, the expandable polystyrene particles with a high expansion ratio and the preparation method thereof comprise the following steps:

[0016] Step 1: Using a sampling device, the preparation raw materials are measured (styrene monomer 10%-20%, deionized water 50%-60%, pentane 1.5%-1.7%, butane 1.1%-1.3%, benzoyl peroxide 1.3%-1.5%, tert-butyl perbenzoate 1.3%-1.5%, dicumyl peroxide 0.6%-0.8%, calcium phosphate 0.1%-0.3%, calcium carbonate 0.2%-0.4%, talc 0.3%-0.5%, sodium bicarbonate 0.4%-0.6%, citric acid 0.1%-0.3%, calcium stearate 0.1%-0.3%, zinc stearate 0.2%-0.4%, antioxidant 0.2%-0.4%);

[0017] Step 2: Using a sampling device, the preparation excipients are measured (0.1%-0.3% of trioctyl phosphate, 0.5%-0.7% of phthalates, 1.1%-1.3% of epoxy soybean oil, 3.3%-3.5% of hexabromocyclododecane, 1.4%-1.6% of decabromodiphenyl ether, 1.3%-1.5% of sodium dodecylbenzenesulfonate, 0.1%-0.3% of sodium lauryl sulfate, 0.1%-0.3% of nonionic surfactant, and 0.3%-0.5% of silicon dioxide);

[0018] Step 3: Heat the reactor at a rate of 0.5-0.8°C / min. When the temperature reaches 85-90°C, maintain the temperature for 300-400 minutes.

[0019] Step 4: Add pentane and continue to heat the reactor until the temperature reaches 120-130°C and the pressure reaches 0.60-0.90 MPa, and maintain this temperature and pressure for 240-300 minutes;

[0020] Step 5: Stop heating and cool the reactor by jacket cooling to reduce the temperature of the material in the reactor to 38-42°C;

[0021] Step 6: Filter the material with a centrifugal filter to remove moisture from the material, and dry the filtered material with hot air;

[0022] Step 7: Add surface lubricant and stir evenly to mix the surface lubricant and the material evenly, and the preparation is completed.

[0023] Compared with the prior art, the present invention provides expandable polystyrene particles with a high expansion ratio and a preparation method thereof, which have the following beneficial effects:

[0024] 1. The present invention, by changing the types of raw materials and auxiliary materials, changing the configuration ratio, and changing the production steps, makes the expandable polystyrene particles with high foaming ratio contain a large number of tiny bubbles. These bubbles can effectively absorb and disperse energy when impacted by external forces, thereby making the product have good cushioning performance.

[0025] 2. In the present invention, the EPS particles with a high foaming ratio are relatively light and soft, and the pressure and temperature required during the processing are relatively low, making them easy to shape.

[0026] 3. In the present invention, when the foaming ratio reaches 30-60 times, the density of the expandable polystyrene particles can be significantly reduced to 15-30 kg / m3, or even lower. This low-density characteristic makes the expandable polystyrene particles and their products very light, easy to carry and install, and greatly reduces transportation and logistics costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] Step 1: Using a sampling device, the preparation raw materials are measured (styrene monomer 10%, deionized water 50%, pentane 1.5%, butane 1.1%, benzoyl peroxide 1.3%, tert-butyl perbenzoate 1.3%, dicumyl peroxide 0.6%, calcium phosphate 0.1%, calcium carbonate 0.2%, talc 0.3%, sodium bicarbonate 0.4%, citric acid 0.1%, calcium stearate 0.1%, zinc stearate 0.2%, antioxidant 0.2%);

[0031] Step 2: Using a sampling device, measure the preparation excipients (0.1% trioctyl phosphate, 0.5% phthalate, 1.1% epoxidized soybean oil, 3.3% hexabromocyclododecane, 1.4% decabromodiphenyl ether, 1.3% sodium dodecylbenzenesulfonate, 0.1% sodium lauryl sulfate, 0.1% nonionic surfactant, 0.3% silicon dioxide);

[0032] Step 3: Heat the reactor at a rate of 0.5-0.8°C / min. When the temperature reaches 85-90°C, maintain the temperature for 300-400 minutes.

[0033] Step 4: Add pentane and continue to heat the reactor until the temperature reaches 120-130°C and the pressure reaches 0.60-0.90 MPa, and maintain this temperature and pressure for 240-300 minutes;

[0034] Step 5: Stop heating and cool the reactor by jacket cooling to reduce the temperature of the material in the reactor to 38-42°C;

[0035] Step 6: Filter the material with a centrifugal filter to remove moisture from the material, and dry the filtered material with hot air;

[0036] Step 7: Add surface lubricant and stir evenly to mix the surface lubricant and the material evenly, and the preparation is completed.

[0037] Example 2

[0038] Step 1: Using a sampling device, the preparation raw materials are measured (styrene monomer 20%, deionized water 60%, pentane 1.7%, butane 1.3%, benzoyl peroxide 1.5%, tert-butyl perbenzoate 1.5%, dicumyl peroxide 0.8%, calcium phosphate 0.3%, calcium carbonate 0.4%, talc 0.5%, sodium bicarbonate 0.6%, citric acid 0.3%, calcium stearate 0.3%, zinc stearate 0.4%, antioxidant 0.4%);

[0039] Step 2: Using a sampling device, measure the preparation excipients (0.3% trioctyl phosphate, 0.7% phthalate, 1.3% epoxidized soybean oil, 3.5% hexabromocyclododecane, 1.6% decabromodiphenyl ether, 1.5% sodium dodecylbenzenesulfonate, 0.3% sodium lauryl sulfate, 0.3% nonionic surfactant, 0.5% silicon dioxide);

[0040] Step 3: Heat the reactor at a rate of 0.5-0.8°C / min. When the temperature reaches 85-90°C, maintain the temperature for 300-400 minutes.

[0041] Step 4: Add pentane and continue to heat the reactor until the temperature reaches 120-130°C and the pressure reaches 0.60-0.90 MPa, and maintain this temperature and pressure for 240-300 minutes;

[0042] Step 5: Stop heating and cool the reactor by jacket cooling to reduce the temperature of the material in the reactor to 38-42°C;

[0043] Step 6: Filter the material with a centrifugal filter to remove moisture from the material, and dry the filtered material with hot air;

[0044] Step 7: Add surface lubricant and stir evenly to mix the surface lubricant and the material evenly, and the preparation is completed.

[0045] Example 3

[0046] Step 1: Using a sampling device, the preparation raw materials are measured (styrene monomer 15%, deionized water 55%, pentane 1.6%, butane 1.2%, benzoyl peroxide 1.4%, tert-butyl perbenzoate 1.4%, dicumyl peroxide 0.7%, calcium phosphate 0.2%, calcium carbonate 0.3%, talc 0.4%, sodium bicarbonate 0.5%, citric acid 0.2%, calcium stearate 0.2%, zinc stearate 0.3%, antioxidant 0.3%);

[0047] Step 2: Using a sampling device, measure the preparation excipients (0.2% of trioctyl phosphate, 0.6% of phthalate, 1.2% of epoxy soybean oil, 3.4% of hexabromocyclododecane, 1.5% of decabromodiphenyl ether, 1.4% of sodium dodecylbenzenesulfonate, 0.2% of sodium lauryl sulfate, 0.2% of nonionic surfactant, and 0.4% of silicon dioxide);

[0048] Step 3: Heat the reactor at a rate of 0.5-0.8°C / min. When the temperature reaches 85-90°C, maintain the temperature for 300-400 minutes.

[0049] Step 4: Add pentane and continue to heat the reactor until the temperature reaches 120-130°C and the pressure reaches 0.60-0.90 MPa, and maintain this temperature and pressure for 240-300 minutes;

[0050] Step 5: Stop heating and cool the reactor by jacket cooling to reduce the temperature of the material in the reactor to 38-42°C;

[0051] Step 6: Filter the material with a centrifugal filter to remove moisture from the material, and dry the filtered material with hot air;

[0052] Step 7: Add surface lubricant and stir evenly to mix the surface lubricant and the material evenly, and the preparation is completed.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Expandable polystyrene particles with high expansion ratio and preparation method thereof, characterized in that: The invention comprises the following raw materials and auxiliary materials: the raw material components and their weight proportions are: 10%-20% styrene monomer, 50%-60% deionized water, 1.5%-1.7% pentane, 1.1%-1.3% butane, 1.3%-1.5% benzoyl peroxide, 1.3%-1.5% tert-butyl perbenzoate, 0.6%-0.8% dicumyl peroxide, 0.1%-0.3% calcium phosphate, 0.2%-0.4% calcium carbonate, 0.3%-0.5% talc, 0.4%-0.6% sodium bicarbonate, 0.1%-0.3% citric acid, 0.1%-0.3% calcium stearate, 0.2%-0.4% zinc stearate, and 0.2%-0.4% antioxidant; The auxiliary material components and their weight proportions are: 0.1%-0.3% of trioctyl phosphate, 0.5%-0.7% of phthalate, 1.1%-1.3% of epoxidized soybean oil, 3.3%-3.5% of hexabromocyclododecane, 1.4%-1.6% of decabromodiphenyl ether, 1.3%-1.5% of sodium dodecylbenzenesulfonate, 0.1%-0.3% of sodium lauryl sulfate, 0.1%-0.3% of nonionic surfactant, and 0.3%-0.5% of silicon dioxide.

2. The expandable polystyrene particles with a high expansion ratio and the preparation method thereof according to claim 1, characterized in that: The raw material components and their weight proportions are as follows: styrene monomer 10%, deionized water 50%, pentane 1.5%, butane 1.1%, benzoyl peroxide 1.3%, tert-butyl perbenzoate 1.3%, dicumyl peroxide 0.6%, calcium phosphate 0.1%, calcium carbonate 0.2%, talc 0.3%, sodium bicarbonate 0.4%, citric acid 0.1%, calcium stearate 0.1%, zinc stearate 0.2%, and antioxidant 0.2%; The auxiliary material components and their weight proportions are: 0.1% trioctyl phosphate, 0.5% phthalate, 1.1% epoxidized soybean oil, 3.3% hexabromocyclododecane, 1.4% decabromodiphenyl ether, 1.3% sodium dodecylbenzenesulfonate, 0.1% sodium lauryl sulfate, 0.1% nonionic surfactant, and 0.3% silicon dioxide.

3. The expandable polystyrene particles with a high expansion ratio and the preparation method thereof according to claim 1, characterized in that: The raw material components and their weight proportions are as follows: 20% styrene monomer, 60% deionized water, 1.7% pentane, 1.3% butane, 1.5% benzoyl peroxide, 1.5% tert-butyl perbenzoate, 0.8% dicumyl peroxide, 0.3% calcium phosphate, 0.4% calcium carbonate, 0.5% talc, 0.6% sodium bicarbonate, 0.3% citric acid, 0.3% calcium stearate, 0.4% zinc stearate, and 0.4% antioxidant; The auxiliary material components and their weight proportions are: 0.3% trioctyl phosphate, 0.7% phthalate, 1.3% epoxidized soybean oil, 3.5% hexabromocyclododecane, 1.6% decabromodiphenyl ether, 1.5% sodium dodecylbenzenesulfonate, 0.3% sodium lauryl sulfate, 0.3% nonionic surfactant, and 0.5% silicon dioxide.

4. The expandable polystyrene particles with a high expansion ratio and the preparation method thereof according to claim 1, characterized in that: The raw material components and their weight proportions are as follows: styrene monomer 15%, deionized water 55%, pentane 1.6%, butane 1.2%, benzoyl peroxide 1.4%, tert-butyl perbenzoate 1.4%, dicumyl peroxide 0.7%, calcium phosphate 0.2%, calcium carbonate 0.3%, talc 0.4%, sodium bicarbonate 0.5%, citric acid 0.2%, calcium stearate 0.2%, zinc stearate 0.3%, and antioxidant 0.3%; The auxiliary material components and their weight proportions are: 0.2% trioctyl phosphate, 0.6% phthalate, 1.2% epoxidized soybean oil, 3.4% hexabromocyclododecane, 1.5% decabromodiphenyl ether, 1.4% sodium dodecylbenzenesulfonate, 0.2% sodium lauryl sulfate, 0.2% nonionic surfactant, and 0.4% silicon dioxide.

5. The expandable polystyrene particles with high expansion ratio and the preparation method thereof according to claim 1, characterized in that: The following steps are involved: Step 1: Using a sampling device, the preparation raw materials are measured (styrene monomer 10%-20%, deionized water 50%-60%, pentane 1.5%-1.7%, butane 1.1%-1.3%, benzoyl peroxide 1.3%-1.5%, tert-butyl perbenzoate 1.3%-1.5%, dicumyl peroxide 0.6%-0.8%, calcium phosphate 0.1%-0.3%, calcium carbonate 0.2%-0.4%, talc 0.3%-0.5%, sodium bicarbonate 0.4%-0.6%, citric acid 0.1%-0.3%, calcium stearate 0.1%-0.3%, zinc stearate 0.2%-0.4%, antioxidant 0.2%-0.4%); Step 2: Using a sampling device, the preparation excipients are measured (0.1%-0.3% of trioctyl phosphate, 0.5%-0.7% of phthalates, 1.1%-1.3% of epoxy soybean oil, 3.3%-3.5% of hexabromocyclododecane, 1.4%-1.6% of decabromodiphenyl ether, 1.3%-1.5% of sodium dodecylbenzenesulfonate, 0.1%-0.3% of sodium lauryl sulfate, 0.1%-0.3% of nonionic surfactant, and 0.3%-0.5% of silicon dioxide); Step 3: Heat the reactor at a rate of 0.5-0.8°C / min. When the temperature reaches 85-90°C, maintain the temperature for 300-400 minutes. Step 4: Add pentane and continue to heat the reactor until the temperature reaches 120-130°C and the pressure reaches 0.60-0.90 MPa, and maintain this temperature and pressure for 240-300 minutes; Step 5: Stop heating and cool the reactor by jacket cooling to reduce the temperature of the material in the reactor to 38-42°C; Step 6: Filter the material with a centrifugal filter to remove moisture from the material, and dry the filtered material with hot air; Step 7: Add surface lubricant and stir evenly to mix the surface lubricant and the material evenly, and the preparation is completed.

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