Preparation process of high-strength plastic plate

Abstract

The application provides a preparation process of high-strength plastic plate, and belongs to the technical field of plastic products. The high-strength plastic plate comprises an A plate and a B plate, and the preparation steps comprise the following steps: in step 1, 40-50 parts of polymer resin, 10-15 parts of filler, 5-8 parts of plasticizer, 5-8 parts of toughening agent, 5-8 parts of stabilizer, 5-7 parts of magnesium sulfate fiber, 2-3.5 parts of superfine polyethylene powder and 2-5 parts of lubricant are put into a mixer, stirred and mixed to obtain a mixture; in step 2, the mixture is put into an extruder to be extruded and molded to obtain the A plate and the B plate; the A plate and the B plate are both provided with raised ribs on at least one side; in step 3, a notch is formed on the raised rib of at least one side of the A plate and / or the B plate for standby; and in step 4, the A plate and the B plate are inserted into each other, and the contact surfaces of the two plates are overlapped to obtain a hollow plastic plate with internal intersection.

Description

Technical Field

[0001] This invention relates to the field of plastic products technology, and in particular to a process for preparing high-strength plastic sheets. Background Technology

[0002] Plastic sheets are sheets made from plastic raw materials, primarily high-molecular polymers, and are highly practical. To improve the performance of plastics, various auxiliary materials are added to the polymer, such as fillers, plasticizers, lubricants, stabilizers, and colorants, to create high-performance plastics. Plastic sheets are widely used in current industrial production due to their excellent corrosion resistance.

[0003] With the development of production technology, people have begun to study new materials and demand plastic sheets with better performance. Among them, high-strength plastic sheets have aroused great interest from users. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a process for preparing high-strength plastic sheets, which can yield plastic sheets with high strength and excellent performance to meet user needs.

[0005] Specifically:

[0006] A process for preparing a high-strength plastic sheet, the high-strength plastic sheet comprising sheet A and sheet B, comprising the following steps:

[0007] Step 1. By weight, add 40-50 parts of polymer resin, 10-15 parts of filler, 5-8 parts of plasticizer, 5-8 parts of toughening agent, 5-8 parts of stabilizer, 5-7 parts of magnesium sulfate fiber, 2-3.5 parts of ultrafine polyethylene powder and 2-5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0008] Step 2. Feed the mixture into an extruder and extrude it to obtain plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0009] Step 3. Make notches on the raised ribs on at least one side of plate A and / or plate B (specifically, notches can be made on only one or both sides of the raised ribs of plate A and plate B, or notches can be made on both sides of the raised ribs of plate A and plate B), for later use;

[0010] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0011] In implementing the above embodiments, preferably, the polymer resin is selected from one or more mixtures of polyethylene, polypropylene, polycarbonate, polyvinyl chloride, and polyethylene terephthalate.

[0012] In implementing the above embodiments, preferably, the average length of the magnesium sulfate fiber is 50–200 μm.

[0013] In implementing the above embodiments, preferably, the particle size of the ultrafine polyethylene powder is 45–600 μm.

[0014] In implementing the above embodiments, preferably, the filler is selected from one or more mixtures of quartz powder, mica powder, calcium carbonate, and titanium dioxide.

[0015] When implementing the above embodiments, preferably, the plasticizer is selected from one or more mixtures of dibutyl phthalate, dinonyl phthalate, and dioctyl terephthalate.

[0016] When implementing the above embodiments, preferably, the toughening agent is selected from one or more mixtures of polyamide resin, nitrile rubber, and EPDM rubber.

[0017] In implementing the above embodiments, preferably, the stabilizer is selected from zinc phosphate.

[0018] When implementing the above embodiments, preferably, the lubricant is selected from one or a mixture of two of zinc fatty acid and polyethylene wax.

[0019] When implementing the above embodiments, preferably, the extrusion temperature of the extruder in step 2 is 160-200℃.

[0020] Compared with the prior art, the beneficial features of the present invention are as follows:

[0021] 1. The preparation process of the high-strength plastic sheet of the present invention uses polymer resin as the matrix and adds magnesium sulfate fiber to the component system, thereby significantly improving the tensile strength, elongation at break, impact strength and other properties of the material system, thus obtaining a high-strength plastic sheet.

[0022] 2. The preparation process of the high-strength plastic sheet of the present invention also adds ultrafine polyethylene powder to the component system. This is because magnesium sulfate fiber has strong polarity and is prone to agglomeration, resulting in uneven distribution in the matrix. This not only fails to improve the tensile strength, elongation at break, impact strength and other properties of the material, but also has an adverse effect. The inventors unexpectedly discovered that adding an appropriate amount of ultrafine polyethylene powder to the system can significantly improve the dispersion ability of each component in the composite material system, thereby ensuring the mechanical properties of the plastic sheet product.

[0023] 3. The high-strength plastic sheet of the present invention can be formed by interlocking two sheets and then covering the contact surfaces of the two sheets. It is a hollow sheet with internal cross-sections. By changing the height of the ribs, sheets of different thicknesses can be made. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figure.

[0025] Figure 1 This is a schematic diagram of a high-strength plastic sheet before insertion, provided by the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, a high-strength plastic sheet obtained by the preparation process of the present invention includes a plate A and a plate B. The two plates can be interlocked. After interlocking, the contact surfaces of the two plates are overlapped to form a hollow plate with internal cross-sections. Plates of different thicknesses can be made by changing the height of the ribs.

[0028] To facilitate implementation of this invention by those skilled in the art, some of the reagents used in the embodiments and comparative examples are now described:

[0029] Polymer resin: Polypropylene, Yanshan Petrochemical;

[0030] Filler: Titanium dioxide, Guangdong Shuntai Chemical Co., Ltd.

[0031] Plasticizer: Dibutyl phthalate, Guangzhou Qihua Chemical Co., Ltd.

[0032] Toughening agent: Nitrile rubber, JSR Corporation;

[0033] Stabilizer: Zinc phosphate, Dongguan Qiaoke Chemical;

[0034] Magnesium sulfate fiber: Dongguan Huiyi Chemical Co., Ltd.

[0035] Ultrafine polyethylene powder: Raw material from Dongguan Shenghao Plastics;

[0036] Lubricant: Polyethylene wax, Guangzhou Binlong Chemical Co., Ltd.

[0037] Example 1

[0038] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0039] Step 1. By weight, add 40 parts of polymer resin, 10 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 7 parts of magnesium sulfate fiber, 3.5 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0040] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0041] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0042] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0043] Example 2

[0044] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0045] Step 1. By weight, add 50 parts of polymer resin, 15 parts of filler, 5 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 7 parts of magnesium sulfate fiber, 3.5 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0046] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0047] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0048] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0049] Example 3

[0050] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0051] Step 1. By weight, add 50 parts of polymer resin, 15 parts of filler, 8 parts of plasticizer, 5 parts of toughening agent, 8 parts of stabilizer, 7 parts of magnesium sulfate fiber, 3.5 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0052] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0053] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0054] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0055] Example 4

[0056] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0057] Step 1. By weight, add 50 parts of polymer resin, 15 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 5 parts of stabilizer, 7 parts of magnesium sulfate fiber, 3.5 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0058] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0059] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0060] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0061] Example 5

[0062] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0063] Step 1. By weight, add 50 parts of polymer resin, 15 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 5 parts of magnesium sulfate fiber, 2 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0064] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0065] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0066] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0067] Example 6

[0068] A high-strength plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0069] Step 1. By weight, add 50 parts of polymer resin, 15 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 7 parts of magnesium sulfate fiber, 3.5 parts of ultrafine polyethylene powder and 2 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0070] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0071] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0072] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0073] Comparative Example 1

[0074] A plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0075] Step 1. By weight, add 40 parts of polymer resin, 10 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0076] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0077] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0078] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0079] Comparative Example 2

[0080] A plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0081] Step 1. By weight, add 40 parts of polymer resin, 10 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 3.5 parts of ultrafine polyethylene powder and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0082] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0083] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0084] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0085] Comparative Example 3

[0086] A plastic sheet includes sheet A and sheet B, and its manufacturing process includes the following steps:

[0087] Step 1. By weight, add 40 parts of polymer resin, 10 parts of filler, 8 parts of plasticizer, 8 parts of toughening agent, 8 parts of stabilizer, 7 parts of magnesium sulfate fiber and 5 parts of lubricant into a mixer, stir and mix to obtain a mixture.

[0088] Step 2. Feed the mixture into an extruder, extrude at a temperature of 160-200℃, and extrude to form plate A and plate B; both plate A and plate B have raised ribs on at least one side;

[0089] Step 3. Make notches on the raised ribs on one side of both plate A and plate B, and set them aside;

[0090] Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap, resulting in a hollow plastic sheet with intersecting interior.

[0091] The plates prepared in Examples 1-6 and Comparative Examples 1-3 were cut to the required experimental specifications and tested as follows:

[0092] 1. Tensile strength was tested according to ISO 527:2012;

[0093] 2. Elongation at break was tested according to ISO 527:2012;

[0094] 3. The impact strength of IZOD is tested according to ISO 180:2000.

[0095] The test results are shown in Table 1 after the above tests:

[0096] Table 1

[0097]

[0098]

[0099] As shown in the table above, Comparative Example 1 yielded results obtained from samples without the addition of magnesium sulfate fiber and ultrafine polyethylene powder. Clearly, Examples 1-6 of this invention, by adding these two components, exhibit significantly improved mechanical properties compared to Comparative Example 1. Conversely, Comparative Example 2, which did not contain magnesium sulfate fiber, showed little change in mechanical properties. Comparative Example 3, which did not contain ultrafine polyethylene powder, actually showed a decrease in mechanical properties. This demonstrates that this invention improves the strength of the product through the synergistic effect of magnesium sulfate fiber and ultrafine polyethylene powder.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A process for preparing high-strength plastic sheets, characterized in that, The high-strength plastic sheet includes sheet A and sheet B. The steps include: Step 1. By weight, add 40-50 parts of polymer resin, 10-15 parts of filler, 5-8 parts of plasticizer, 5-8 parts of toughening agent, 5-8 parts of stabilizer, 5-7 parts of magnesium sulfate fiber, 2-3.5 parts of ultrafine polyethylene powder and 2-5 parts of lubricant into a mixer, stir and mix to obtain a mixture. Step 2. Feed the mixture into an extruder and extrude it to obtain plate A and plate B; both plate A and plate B have raised ribs on at least one side; Step 3. Make notches on the raised ribs on at least one side of plate A and / or plate B, for later use; Step 4. Insert board A and board B together so that the contact surfaces of the two boards overlap to obtain a hollow plastic sheet with intersecting interiors. The average length of the magnesium sulfate fiber is 50-200 μm; The particle size of the ultrafine polyethylene powder is 45-600 μm; The plasticizer is dibutyl phthalate; The toughening agent is nitrile rubber.

2. The preparation process of the high-strength plastic sheet according to claim 1, characterized in that, The polymer resin is selected from one or more mixtures of polyethylene, polypropylene, polycarbonate, polyvinyl chloride, and polyethylene terephthalate.

3. The preparation process of the high-strength plastic sheet according to claim 1, characterized in that, The filler is selected from one or more mixtures of quartz powder, mica powder, calcium carbonate, and titanium dioxide.

4. The preparation process of the high-strength plastic sheet according to claim 1, characterized in that, The stabilizer is selected from zinc phosphate.

5. The preparation process of the high-strength plastic sheet according to claim 1, characterized in that, The lubricant is selected from one or a mixture of two of zinc fatty acid and polyethylene wax.

6. The preparation process of the high-strength plastic sheet according to claim 1, characterized in that, In step 2, the extrusion temperature of the extruder is 160-200℃.

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