A PC composite material with environmental protection and high strength

Abstract

The application provides a PC composite material with environmental protection and high strength, which comprises the following components in parts by weight: PCR PC, 50-88 parts; pre-consumer recycled carbon fiber glass fiber composite fiber sheet material, 10-30 parts; impact modifier, 1-10 parts; antioxidant, 0.1-1 part; lubricant, 0.1-1 part; wherein the pre-consumer recycled carbon fiber glass fiber composite fiber sheet material contains 80 parts by mass of glass fiber and 20 parts by mass of carbon fiber. The application has the beneficial effect that by adding the fragments of the pre-consumer recycled shoe sole carbon fiber glass fiber composite sheet material, the impact modifier, the antioxidant and the lubricant in the PC, the preparation of the PC composite material with environmental protection and high strength is realized, the prepared composite material has a high recycling ratio and good impact strength, and the raw material carbon footprint can be reduced, so that the effect of energy saving and carbon reduction is achieved, and the industrial demand is expanded.

Description

[Technical Field]

[0001] This invention relates to the field of composite material technology, and in particular to a PC composite material that combines environmental friendliness and high strength. [Background Technology]

[0002] In the manufacturing process of 3C products, glass fiber and carbon fiber are the most commonly obtained and widely used reinforcing materials to strengthen plastics. At present, in order to improve the environmental friendliness of composite materials, recycled glass fiber or carbon fiber is often used to replace virgin glass fiber or carbon fiber. However, the fiber length recovered by chemical methods is only about 200-500μm, which cannot be directly used to reinforce plastics. It often has to go through multiple processes, which are complicated and energy-intensive. Therefore, there is an urgent need to find a fiber material that is energy-saving and can still strengthen plastics.

[0003] Pre-consumer recycled carbon fiber and glass fiber composite board refers to the board material recycled after being stamped and physically crushed before leaving the factory. The PC composite material provided by this invention, which combines environmental protection and high strength, utilizes the fragments of the pre-consumer recycled carbon fiber and glass fiber composite board and other additives to reinforce the PC. While reinforcing the PC, it can reduce the carbon footprint of the raw materials, thereby achieving the effect of energy saving and carbon reduction and expanding industrial demand. [Summary of the Invention]

[0004] The technical problem this invention aims to solve is that using virgin glass fiber and carbon fiber to reinforce plastics such as PC results in excessive carbon emissions and is not environmentally friendly. Furthermore, chemically recycled glass fiber and carbon fiber are too short to be directly used for plastic reinforcement, and the process is cumbersome. This invention provides a PC composite material that combines environmental friendliness and high strength to address these problems.

[0005] The solution to the technical problem of this invention is: a PC composite material that combines environmental friendliness and high strength, comprising the following components in parts by weight:

[0006] PCR PC, 50–88 copies;

[0007] 10-30 parts of pre-consumption recycled carbon fiber-glass fiber composite sheet;

[0008] Impact modifier, 1-10 parts;

[0009] Antioxidant, 0.1 to 1 part;

[0010] Lubricant, 0.1 to 1 part;

[0011] The pre-consumption recycled carbon fiber-glass fiber composite sheet contains 80 parts by weight of glass fiber and 20 parts by weight of carbon fiber.

[0012] Preferably, the PCR PC is a combination of two or more of the following: bisphenol A linear PCR PC, polyester PCR PC, organosilicon copolymer PCR PC, cyclohexane bisphenol A PCR PC, and PCR PC synthesized from bisphenol TMC. The PCR PC has a melt flow rate MI = (3-25) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (15-72) kJ / m2, a weight-average molecular weight of 10,000-50,000, and a molecular weight distribution of 1-3.

[0013] Preferably, the pre-consumer recycled carbon fiber glass fiber composite fiber sheet is a fragment of a carbon fiber glass fiber composite shoe sole that has been recycled after being stamped and physically crushed before leaving the factory. Its width is 3-6mm and its length is 10-30mm.

[0014] Preferably, the impact modifier is one or more of the following: core-shell acrylate-PMMA toughening agents, core-shell acrylate-SAN toughening agents, core-shell silicone-PMMA toughening agents, core-shell silicone-SAN toughening agents, cross-linked methacrylate-methyl methacrylate toughening agents, maleic anhydride-grafted polyurethane toughening agents, butadiene-styrene-methyl methacrylate toughening agents, and silicone rubber-methyl methacrylate toughening agents.

[0015] Preferably, the antioxidant is one or more of the following: hindered phenolic antioxidants, hindered amine antioxidants, phosphite antioxidants, pentaerythritol esters and their derivatives.

[0016] Preferably, the lubricant is one or more of the following: fatty acid amide lubricants, hydrocarbon lubricants, modified lubricants such as siloxanes, etc.

[0017] A method for preparing a PC composite material that combines environmental friendliness and high strength is characterized in that the components are mixed evenly and then fed into an extruder for extrusion granulation. The extruder is a twin-screw extruder, the processing temperature range of the extruder is set to 260℃~300℃, and the screw speed of the extruder is 500RPM.

[0018] The beneficial effects of this invention are that by adding fragments of pre-consumer recycled carbon fiber and glass fiber composite sheets from shoe soles, impact modifiers, antioxidants, and lubricants to PC, a PC composite material with both environmental friendliness and high strength is prepared. The resulting composite material has good impact strength and can reduce the carbon footprint of raw materials, thereby achieving the effect of energy conservation and carbon reduction and expanding industrial demand. 【Detailed Implementation Methods】

[0019] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with embodiments of the present invention.

[0020] This invention provides a PC composite material that combines environmental friendliness and high strength, comprising the following components in parts by weight:

[0021] PCR PC, 50–88 copies;

[0022] 10-30 parts of pre-consumption recycled carbon fiber-glass fiber composite sheet;

[0023] Impact modifier, 1-10 parts;

[0024] Antioxidant, 0.1 to 1 part;

[0025] Lubricant, 0.1 to 1 part;

[0026] The pre-consumer recycled carbon fiber glass fiber composite fiber sheet contains 80 parts by weight of glass fiber and 20 parts by weight of carbon fiber, that is, the proportion of glass fiber in the pre-consumer recycled carbon fiber glass fiber composite fiber sheet is 80% and the proportion of carbon fiber is 20%.

[0027] The PCR PC is a combination of two or more of the following: bisphenol A linear PCR PC, polyester PCR PC, organosilicon copolymer PCR PC, cyclohexane bisphenol A PCR PC, and PCR PC synthesized from bisphenol TMC. The PCR PC has a melt flow rate MI = (3-25) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (15-72) kJ / m2, a weight average molecular weight of 10000-50000, and a molecular weight distribution of 1-3.

[0028] The aforementioned pre-consumption recycled carbon fiber glass fiber composite fiber sheet is a fragment of a carbon fiber glass fiber composite material shoe sole that has been recycled after being stamped and physically crushed before leaving the factory. Its width is 3-6mm and its length is 10-30mm.

[0029] The impact modifier is one or more of the following: core-shell acrylate-PMMA toughening agents, core-shell acrylate-SAN toughening agents, core-shell silicone-PMMA toughening agents, core-shell silicone-SAN toughening agents, cross-linked methacrylate-methyl methacrylate toughening agents, maleic anhydride-grafted polyurethane toughening agents, butadiene-styrene-methyl methacrylate toughening agents, and silicone rubber-methyl methacrylate toughening agents.

[0030] The antioxidant is one or more of the following: hindered phenolic antioxidants, hindered amine antioxidants, phosphite antioxidants, pentaerythritol esters and their derivatives.

[0031] The lubricant is one or more of the following: fatty acid amide lubricants, hydrocarbon lubricants, modified lubricants such as siloxanes, etc.

[0032] Example 1

[0033] An environmentally friendly and high-strength PC composite material comprises the following components in parts by weight: 86.4 parts PCR PC, 10 parts pre-consumer recycled carbon fiber glass fiber composite sheet, 3 parts impact modifier, 0.3 parts antioxidant, and 0.3 parts lubricant.

[0034] The 86.4 PCR PCs consist of 70 bisphenol A linear PCR PCs and 16.4 cyclohexane bisphenol A PCR PCs. The bisphenol A linear PCR PCs and cyclohexane bisphenol A PCR PCs are made from MITEK 20060 particles. The PCR PCs have a melt flow rate MI = (3-6) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (55-72) kJ / m2, and a weight-average molecular weight of 40,000-50,000.

[0035] The aforementioned pre-consumption recycled carbon fiber glass fiber composite fiber sheet is a fragment of a carbon fiber glass fiber composite material shoe sole that has been recycled after being stamped and physically crushed before leaving the factory. Its width is 2-4mm and its length is 4-6mm.

[0036] The impact modifier is a core-shell type acrylate-PMMA toughening agent, specifically Mitsubishi Rayon's S-2030 toughening agent.

[0037] The antioxidant is a hindered phenolic antioxidant, specifically pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) ester.

[0038] The lubricant is a fatty acid amide lubricant, specifically a fatty acid amide.

[0039] To prepare this environmentally friendly and high-strength PC composite material, the corresponding weight parts of the components were weighed according to the above proportions, and the components were mixed evenly and then fed into an extruder for extrusion granulation. The extruder was a twin-screw extruder, and the processing temperature range of the extruder was set to 260℃~300℃. The screw speed of the extruder was 500RPM.

[0040] Comparative Example 1

[0041] A PC composite material comprises the following components in parts by weight: 86.4 parts PC, 10 parts glass fiber, 3 parts impact modifier, 0.3 parts antioxidant, and 0.3 parts lubricant.

[0042] The PC is Virgin PC (virgin PC), and the 86.4 parts of PC are a blend of 70 parts of bisphenol A linear PC and 16.4 parts of cyclohexane bisphenol A PC. The bisphenol A linear PC is made from Lihua Yi WY-106BR particles, and the cyclohexane bisphenol A PC is made from Formosa Plastics Idemitsu IR1900 particles. The PC has a melt flow rate MI = (3-6) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (55-72) kJ / m2, and a weight average molecular weight of 40,000-50,000.

[0043] The glass fiber is a brand new 3mm Taishan TFG-3.0-T436 type glass fiber.

[0044] The impact modifier is a core-shell type acrylate-PMMA toughening agent, specifically Mitsubishi Rayon's S-2030 toughening agent.

[0045] The antioxidant is a hindered phenolic antioxidant, specifically pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) ester.

[0046] The lubricant is a fatty acid amide lubricant, specifically a fatty acid amide.

[0047] To prepare the PC composite material, the corresponding weight parts of the components are weighed according to the above proportions, and the components are mixed evenly and then fed into an extruder for extrusion granulation. The extruder is a twin-screw extruder, and the processing temperature range of the extruder is set to 260℃~300℃. The screw speed of the extruder is 500RPM.

[0048] Example 2

[0049] An environmentally friendly and high-strength PC composite material comprises the following components in parts by weight: 66.4 parts PCR PC, 30 parts pre-consumer recycled carbon fiber glass fiber composite sheet, 3 parts impact modifier, 0.3 parts antioxidant, and 0.3 parts lubricant.

[0050] The 66.4 PCR PCs consist of 53 bisphenol A linear PCR PCs and 13.4 cyclohexane bisphenol A PCR PCs. The bisphenol A linear PCR PCs and cyclohexane bisphenol A PCR PCs are made from MITEK 20060 particles. The PCR PCs have a melt flow rate MI = (3-6) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (55-72) kJ / m2, and a weight-average molecular weight of 40,000-50,000.

[0051] The aforementioned pre-consumption recycled carbon fiber glass fiber composite fiber sheet is a fragment of a carbon fiber glass fiber composite material shoe sole that has been recycled after being stamped and physically crushed before leaving the factory. Its width is 2-4mm and its length is 4-6mm.

[0052] The impact modifier is a core-shell type acrylate-PMMA toughening agent, specifically Mitsubishi Rayon's S-2030 toughening agent.

[0053] The antioxidant is a hindered phenolic antioxidant, specifically pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) ester.

[0054] The lubricant is a fatty acid amide lubricant, specifically a fatty acid amide.

[0055] To prepare this environmentally friendly and high-strength PC composite material, the corresponding weight parts of the components were weighed according to the above proportions, and the components were mixed evenly and then fed into an extruder for extrusion granulation. The extruder was a twin-screw extruder, and the processing temperature range of the extruder was set to 260℃~300℃. The screw speed of the extruder was 500RPM.

[0056] Comparative Example 2

[0057] A PC composite material comprises the following components in parts by weight: 66.4 parts PC, 30 parts glass fiber, 3 parts impact modifier, 0.3 parts antioxidant, and 0.3 parts lubricant.

[0058] The PC is Virgin PC (virgin PC), and the 66.4 parts of PC are a blend of 53 parts of bisphenol A linear PC and 13.4 parts of cyclohexane bisphenol A PC. The bisphenol A linear PC is made from Lihua Yi WY-106BR particles, and the cyclohexane bisphenol A PC is made from Formosa Plastics Idemitsu IR1900 particles. The PC has a melt flow rate MI = (3-6) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (55-72) kJ / m2, and a weight average molecular weight of 40,000-50,000.

[0059] The glass fiber is a brand new 3mm Taishan TFG-3.0-T436 type glass fiber.

[0060] The impact modifier is a core-shell type acrylate-PMMA toughening agent, specifically Mitsubishi Rayon's S-2030 toughening agent.

[0061] The antioxidant is a hindered phenolic antioxidant, specifically pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) ester.

[0062] The lubricant is a fatty acid amide lubricant, specifically a fatty acid amide.

[0063] To prepare the PC composite material, the corresponding weight parts of the components are weighed according to the above proportions, and the components are mixed evenly and then fed into an extruder for extrusion granulation. The extruder is a twin-screw extruder, and the processing temperature range of the extruder is set to 260℃~300℃. The screw speed of the extruder is 500RPM.

[0064] The particles from Example 1, Comparative Example 1, Example 2, and Comparative Example 2 were injection molded into standard test strips on an injection molding machine. The test strips were then subjected to relevant physical property tests according to the standard. The test results are shown in Table 1.

[0065] Table 1 Test Results

[0066]

[0067]

[0068] The test results above show that this invention, by adding pre-consumer recycled carbon fiber and glass fiber composite fiber sheets, impact modifiers, antioxidants, and lubricants to PCR PC, achieves the preparation of a PC composite material that is both environmentally friendly and high-strength. Compared with virgin PC and virgin glass fiber, the resulting composite material has a higher recycling rate, better environmental performance, and good impact strength (in this field, impact strength within the range of 10 to 15 is considered the same). At the same time, it can reduce the carbon footprint of raw materials, thereby achieving energy conservation and carbon reduction, and expanding industrial demand.

[0069] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A PC composite material that combines environmental friendliness and high strength, characterized in that, Includes the following components in parts by weight: PCR PC, 50–88 copies; 10-30 parts of pre-consumption recycled carbon fiber-glass fiber composite sheet; Impact modifier, 1-10 parts; Antioxidant, 0.1 to 1 part; Lubricant, 0.1 to 1 part; The pre-consumption recycled carbon fiber-glass fiber composite sheet contains 80 parts by weight of glass fiber and 20 parts by weight of carbon fiber.

2. The PC composite material with both environmental friendliness and high strength as described in claim 1, characterized in that: The PCRPC is a combination of two or more of the following: bisphenol A linear PCR PC, polyester PCR PC, organosilicon copolymer PCR PC, cyclohexane bisphenol A PCR PC, and PCR PC synthesized from bisphenol TMC. The PCR PC has a melt flow rate MI = (3-25) g / 10 min (300℃ / 1.2Kg), an impact strength IS = (15-72) kJ / m2, a weight average molecular weight of 10000-50000, and a molecular weight distribution of 1-3.

3. The PC composite material with both environmental friendliness and high strength as described in claim 1, characterized in that: The pre-consumption recycled carbon fiber and glass fiber composite fiber sheet is a fragment of a carbon fiber and glass fiber composite shoe sole that has been recycled after being stamped and physically crushed before leaving the factory. Its width is 3-6mm and its length is 10-30mm.

4. The PC composite material with both environmental friendliness and high strength as described in claim 1, characterized in that: The impact modifier is one or more of the following: core-shell acrylate-PMMA toughening agents, core-shell acrylate-SAN toughening agents, core-shell silicone-PMMA toughening agents, core-shell silicone-SAN toughening agents, cross-linked methacrylate-methyl methacrylate toughening agents, maleic anhydride-grafted polyurethane toughening agents, butadiene-styrene-methyl methacrylate toughening agents, and silicone rubber-methyl methacrylate toughening agents.

5. A PC composite material with both environmental friendliness and high strength as described in claim 1, characterized in that: The antioxidant is one or more of the following: hindered phenolic antioxidants, hindered amine antioxidants, phosphite antioxidants, pentaerythritol esters and their derivatives.

6. The PC composite material with both environmental friendliness and high strength as described in claim 1, characterized in that: The lubricant is one or more of the following: fatty acid amide lubricants, hydrocarbon lubricants, modified lubricants such as siloxanes, etc.

7. A method for preparing a PC composite material that combines environmental friendliness and high strength as described in any one of claims 1-6, characterized in that: After the components are mixed evenly, they are fed into an extruder for granulation. The extruder is a twin-screw extruder, and the processing temperature range of the extruder is set to 260℃~300℃. The screw speed of the extruder is 500RPM.

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