A waste glass fiber reinforced PVC material and a preparation method thereof

Abstract

The application belongs to the technical field of PVC material and resource recycling, and particularly relates to a waste glass fiber reinforced PVC material and a preparation method thereof. Raw materials include, in terms of mass fractions, 100 parts of PVC resin powder, 20-30 parts of activated waste glass fiber powder, 1-3 parts of coupling agent, 10-15 parts of impact modifier, 3-5 parts of stabilizer, 0.5-1.5 parts of titanium white powder, 70-130 parts of calcium carbonate powder and 2-5 parts of lubricant. The activated waste glass fiber powder is obtained by activating the surface of waste glass fiber powder with an activating agent, and the activating agent is glycerol monostearate. The mass ratio of the waste glass fiber powder to the activating agent is 100:2-4. The application can improve the Vicat softening temperature, tensile strength and tensile modulus of the PVC material, and solve the recycling problem of glass fiber waste.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of PVC material and resource recycling, and particularly relates to a waste glass fiber reinforced PVC material and a preparation method thereof. BACKGROUND

[0002] The information disclosed in this Background section is for the purpose of providing context for the application. It is not necessarily recognized in the art as prior art.

[0003] PVC (polyvinyl chloride) is one of the most widely used plastics in the world, but its high-temperature resistance, tensile strength and tensile modulus are low, which affects the application range of PVC materials.

[0004] Glass fiber reinforced plastic is a reinforced plastic using glass fiber or its products as reinforcing material, and has the advantages of light weight, high strength, high temperature resistance, corrosion resistance and good electrical insulation. Most glass fiber reinforced plastics are made of thermosetting resin and are not easy to degrade, differentiate and recycle. With the rapid increase in the number of glass fiber reinforced plastic waste in recent years, the storage, treatment and recycling of waste glass fiber reinforced plastic products are urgent problems. The main waste is the waste of glass fiber reinforced plastic products at the end of life and the waste generated in the production process. The traditional burying and incineration method occupies a large amount of land, causes environmental pollution, has high treatment cost, and has limited treatment capacity, which cannot meet the requirement of the rapid increase in the amount of glass fiber reinforced plastic waste. Glass fiber reinforced plastic waste has become a social problem. SUMMARY

[0005] In order to solve the problems of the prior art, the application aims to provide a waste glass fiber reinforced PVC material and a preparation method thereof, which can improve the Vicat softening temperature, tensile strength and tensile modulus of PVC material, and solve the recycling problem of glass fiber reinforced plastic waste.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0007] On the one hand, a waste glass fiber reinforced PVC material, the raw materials are calculated according to the mass fraction, and the waste glass fiber reinforced plastic powder is activated by an activating agent, and the activating agent is glycerol monostearate, and the mass ratio of the waste glass fiber reinforced plastic powder to the activating agent is 100:2-4.

[0008] The waste glass fiber reinforced plastic powder is activated by an activating agent, and the activating agent is glycerol monostearate, and the mass ratio of the waste glass fiber reinforced plastic powder to the activating agent is 100:2-4.

[0009] The titanium white powder and calcium carbonate powder added in the application are both organic materials, and the compatibility with PVC is poor, the coupling agent added in the application is a kind of material with two different functional groups, one is an inorganic-philic group, which is easy to chemically react with the surface of inorganic matter, and the other is an organic-philic group, which can chemically react with synthetic resin or other polymers or generate hydrogen bond to dissolve in them. Therefore, the coupling agent as a "molecular bridge" can improve the interface interaction between inorganic matter and organic matter, thereby improving the performance of the PVC material.

[0010] On this basis, in order to realize the recycling of glass fiber reinforced plastic waste, the functional characteristics of the waste glass fiber reinforced plastic powder are a good filling and reinforcing agent, containing short glass fibers and thermosetting plastic powder, which can effectively improve the mechanical properties of the high polymer. However, in the previous research, the glass fiber reinforced plastic waste is directly crushed and added to the PVC material, and the Vicat softening temperature, tensile strength and tensile modulus of the prepared reinforced PVC material are not obviously improved. Further research found that the main reason is that the waste glass fiber reinforced plastic powder contains short glass fibers and thermosetting plastic, which has a certain filling effect on the high polymer, but the compatibility with the high polymer is poor. In order to better play its filling role in the PVC material, the surface of the waste glass fiber reinforced plastic powder is activated by glycerol monostearate, so that a layer of glycerol monostearate is coated on the surface, the interfacial adhesion between the waste glass fiber reinforced plastic powder and PVC resin is improved, and the compatibility between the waste glass fiber reinforced plastic powder and the high polymer is improved, so that the Vicat softening temperature, tensile strength and tensile modulus of the reinforced PVC material are significantly improved.

[0011] On the other hand, a preparation method of the above-mentioned waste glass fiber reinforced plastic reinforced PVC material, the activated waste glass fiber reinforced plastic powder is stirred with a coupling agent, so that the coupling agent is uniformly dispersed on the surface of the glass fiber reinforced plastic powder, and then PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder and lubricant are added and stirred uniformly to obtain a mixture; the mixture is extruded by an extruder, and then sequentially cooled, shaped, pulled and cut to obtain the waste glass fiber reinforced plastic reinforced PVC material.

[0012] The application has the following advantages:

[0013] The application uses PVC resin powder as a base material, adds the activated glass fiber reinforced plastic powder and other additives to prepare a PVC reinforced material. The PVC reinforced material prepared by the application has high Vicat softening temperature, tensile strength and tensile modulus, the Vicat softening temperature is increased to more than 110 DEG C, the tensile strength is increased to 41.9 Mpa, and the tensile modulus is increased to 7.31 x 10 3 Mpa. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated herein for explanation.

[0015] Figure 1 Process flow chart of the embodiment of the present application. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0017] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0018] In view of the problems of PVC, such as low high-temperature resistance, low tensile strength and low tensile modulus, and the problem of glass fiber reinforced plastic waste being difficult to dispose, the present application finds that the performance of high-temperature resistance, tensile strength and tensile modulus is not obviously improved when the glass fiber reinforced plastic waste is directly added to PVC, and therefore provides a waste glass fiber reinforced plastic reinforced PVC material and a preparation method thereof.

[0019] In a typical embodiment of the present application, a waste glass fiber reinforced plastic reinforced PVC material is provided, and raw materials are included in the following proportions by mass: 100 parts of PVC resin powder, 20-30 parts of activated waste glass fiber reinforced plastic powder, 1-3 parts of coupling agent, 10-15 parts of impact modifier, 3-5 parts of stabilizer, 0.5-1.5 parts of titanium white powder, 70-130 parts of calcium carbonate powder, and 2-5 parts of lubricant.

[0020] The activated waste glass fiber reinforced plastic powder is obtained by activating the surface of waste glass fiber reinforced plastic powder with an activating agent, and the activating agent is glycerol monostearate, and the mass ratio of waste glass fiber reinforced plastic powder to activating agent is 100:2-4.

[0021] The waste glass fiber reinforced plastic powder in the present application is from waste phenolic glass fiber reinforced plastic products, epoxy glass fiber reinforced plastic products and polyester glass fiber reinforced plastic products.

[0022] In some embodiments, the coupling agent is one or more of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a bimetal coupling agent, a phosphate coupling agent and a borate coupling agent.

[0023] In some embodiments, the impact modifier is one or several of CPE, impact ACR, MBS.

[0024] In some embodiments, the stabilizer is one or several of lead salt stabilizer, calcium zinc stabilizer, rare earth stabilizer.

[0025] In some embodiments, the lubricant is one or several of mixture of PE wax, microcrystalline wax, stearic acid, zinc stearate, calcium stearate.

[0026] In some embodiments, the surface activation treatment is performed by blending the activator with the waste glass steel powder. The blending temperature is 50-65℃.

[0027] In some embodiments, the calcium carbonate powder is 90-110 parts, preferably 95-105 parts. Studies have shown that the performance of the waste glass steel reinforced PVC material under the above ratio system is better. That is, 100 parts of PVC resin powder, 20-30 parts of activated waste glass steel powder, 1-3 parts of coupling agent, 10-15 parts of impact modifier, 3-5 parts of stabilizer, 0.5-1.5 parts of titanium dioxide, 90-110 parts of calcium carbonate powder (preferably 95-105 parts), and 2-5 parts of lubricant.

[0028] Another embodiment of the present application provides a preparation method of the above waste glass steel reinforced PVC material. The activated waste glass steel powder is stirred with the coupling agent to uniformly disperse the coupling agent on the surface of the glass steel powder. Then, the PVC resin powder, the impact modifier, the stabilizer, the titanium dioxide, the calcium carbonate powder, and the lubricant are added and stirred uniformly to obtain a mixture. The mixture is extruded by an extruder, and then sequentially cooled, stretched, and cut to obtain the waste glass steel reinforced PVC material.

[0029] In some embodiments, the activated waste glass steel powder is stirred with the coupling agent and heated to 100-120℃, and then cooled and stirred to uniformly disperse the coupling agent on the surface of the glass steel powder. Specifically, the activated waste glass steel powder and the coupling agent are added to a high-speed mixer and stirred to heat to 100-120℃ by self-friction.

[0030] In some embodiments, the PVC resin powder, the impact modifier, the stabilizer, the titanium dioxide, the calcium carbonate powder, and the lubricant are added, and the water contained in the raw materials is removed by self-friction heating. Specifically, the temperature is raised to 110-130℃ by self-friction, and then cooled to 40-50℃ to discharge the materials.

[0031] In some embodiments, the material is changed into a viscous state through a screw extrusion and plasticization process of the extruder, and is continuously extruded through a die. Specifically, the process parameters of the extruder extrusion are as follows: the main machine current is 16-20 A, the screw rotation speed is 17.0-18.0 rpm, and the traction speed is 0.7-0.9 m / min; the temperatures of the main machine barrel from zone 1 to zone 4 are 179-181℃, 184-186℃, 187-189℃, and 184-186℃, respectively, the temperature of the converging core is 184-186℃, and the temperatures of the die from zone 1 to zone 4 are 179-181℃, 179-181℃, 177-179℃, and 174-176℃, respectively.

[0032] In some embodiments, the steps are as follows:

[0033] (1) ingredient mixing: activated waste glass steel powder and coupling agent are sequentially added to a high-speed mixer for stirring treatment, and the temperature is increased to 100-120℃ by self-friction, and then the temperature is decreased, and the coupling agent is uniformly dispersed on the surface of the glass steel powder by stirring; then PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant are added, and the mixture is stirred to obtain a uniformly dispersed material, and the water contained in the raw materials is removed by friction heating, and the temperature is increased to 110-130℃ by self-friction, and then the temperature is decreased to 40-50℃, and then the material is discharged;

[0034] (2) extruder extrusion: the mixed material is added to a hopper, and the material is fed into the extruder through the hopper, and the material is changed into a high-viscosity state through a screw extrusion and plasticization process, and is continuously extruded through a die;

[0035] (3) cooling and shaping: the strip-shaped material extruded from the die is cooled and shaped in water, the temperature of the material is reduced, and the material becomes a continuous strip-shaped material;

[0036] (4) traction: the continuous strip-shaped material moves forward at a uniform speed under the action of the traction device;

[0037] (5) cutting: the final cutting is completed by a cutting machine under the control of an encoder pulse signal, and the length of the material particles is controlled by the cutting frequency.

[0038] In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the technical solutions of the present application will be described in detail below in combination with specific examples and comparative examples.

[0039] In the following examples, the preparation process of the active waste glass steel (phenolic glass steel) powder is as follows: 100 parts by mass of waste glass steel powder and 3 parts by mass of glyceryl monostearate are blended at 60℃.

[0040] In the following examples, the test method for the Vicat softening temperature is in accordance with GB / T 1633-2000 "Determination of Vicat Softening Temperature (VST) of Thermoplastics".

[0041] In the following examples, the tensile strength, tensile modulus are tested in accordance with GB / T 1040-2018 "Determination of tensile properties of plastics".

[0042] Example 1

[0043] Raw materials: 100 parts of PVC resin powder, 20 parts of activated waste glass steel powder, 2 parts of titanate coupling agent, 10 parts of ACR impact modifier, 3 parts of calcium zinc stabilizer, 0.5 parts of titanium white powder, 100 parts of calcium carbonate powder, 1 part of stearic acid lubricant, and 1 part of PE wax lubricant.

[0044] Preparation method, as shown in Figure 1 , the specific steps are:

[0045] (1) Dosing and mixing: the activated waste glass steel powder and coupling agent are added into the high-speed mixer in sequence for stirring treatment, the temperature is increased to 110°C by self-friction, and then the temperature is decreased, the coupling agent is uniformly dispersed on the surface of the glass steel powder by stirring. Then add PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant, use high-speed mixer to stir the above materials and the mixture of waste glass steel powder and coupling agent obtained before to get uniformly dispersed materials, remove the water contained in the raw materials by friction heating, the temperature is increased to 120°C by self-friction, and then the temperature is decreased to 45°C before discharging.

[0046] (2) Extrusion: the mixed material is added into the hopper, the material passes through the hopper into the extruder, and the material becomes high-viscosity state after extrusion and plasticization process, and then continuously extruded through the die. Main machine current: 16-20A, screw speed: 17.7 rpm, traction speed: 0.8 m / min, main machine barrel temperature 1-4 zone: 180°C, 185°C, 188°C, 185°C, combined core temperature: 185°C, die temperature 1-4 zone: 180°C, 180°C, 178°C, 175°C.

[0047] (3) Cooling and shaping: the strip-shaped material extruded from the die is cooled and shaped in water, the temperature of the material is reduced, and the material becomes continuous strip-shaped material.

[0048] (4) Traction: the continuous strip-shaped material moves forward at a uniform speed under the action of the traction device.

[0049] (5) Cutting: the final granulation is completed by the cutting machine under the control of the encoder pulse signal, and the length of the granules is controlled by the cutting frequency.

[0050] The PVC material reinforced by waste glass steel prepared in the embodiment has a Vicat softening temperature of 113℃, a tensile strength of 41.9Mpa, and a tensile modulus of 7.31x10 3 Mpa.

[0051] Example 2

[0052] Raw materials: 100 parts of PVC resin powder, 20 parts of activated waste glass steel powder, 2 parts of titanate coupling agent, 10 parts of ACR impact modifier, 3 parts of calcium-zinc stabilizer, 0.5 part of titanium white powder, 90 parts of calcium carbonate powder, 1 part of stearic acid lubricant, and 1 part of PE wax lubricant.

[0053] The preparation method is as shown in the following specific steps: Figure 1

[0054] (1) Dosing and mixing: the activated waste glass steel powder and the coupling agent are sequentially added into a high-speed mixer for stirring treatment, and the temperature is increased to 110℃ by self-friction, and then the temperature is decreased. The coupling agent is uniformly dispersed on the surface of the glass steel powder by stirring. Then, the PVC resin powder, the impact modifier, the stabilizer, the titanium white powder, the calcium carbonate powder, and the lubricant are added, and the mixture is stirred by using a high-speed mixer to obtain a uniformly dispersed material. The water contained in the raw materials is removed by frictional heat, and the temperature is increased to 120℃ by self-friction, and then the temperature is decreased to 45℃, and then the material is discharged.

[0055] (2) Extrusion: the mixed material is added into a hopper, and the material is extruded by a screw and plasticized, and then the material is continuously extruded through a die. The process parameters are as follows: main motor current: 16-20A, screw rotation speed: 17.7rpm, traction speed: 0.8m / min, main motor barrel temperature zone 1-4: 180℃, 185℃, 188℃, 185℃, combined core temperature: 185℃, die temperature zone 1-4: 180℃, 180℃, 178℃, 175℃.

[0056] (3) Cooling and shaping: the strip-shaped material extruded from the die is cooled and shaped in water, and the temperature of the material is decreased, and the material becomes a continuous strip-shaped material.

[0057] (4) Traction: the continuous strip-shaped material is uniformly moved forward under the action of a traction device.

[0058] (5) Cutting: the final cutting is completed by using a cutting machine under the control of an encoder pulse signal, and the length of the material particles is controlled by the cutting frequency.

[0059] The PVC material reinforced by waste glass steel prepared in the embodiment has a Vicat softening temperature of 109℃, a tensile strength of 38.5Mpa, and a tensile modulus of 6.02x10​3 Mpa.

[0060] Comparative Example 1

[0061] Raw materials: 100 parts of PVC resin powder, 2 parts of titanate coupling agent, 10 parts of ACR impact modifier, 3 parts of calcium-zinc stabilizer, 0.5 parts of titanium white powder, 100 parts of calcium carbonate powder, 1 part of stearic acid lubricant, and 1 part of PE wax lubricant, all by mass fraction.

[0062] Preparation method, as shown in Figure 1 specific steps are as follows:

[0063] (1) ingredient mixing: activated waste glass steel powder and coupling agent are added into a high-speed mixer in sequence for stirring treatment, self-friction heating to 110°C, starting to cool down, and the coupling agent is uniformly dispersed on the surface of the glass steel powder through stirring. Then, PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant are added, and the above-mentioned materials are stirred together with the mixture of waste glass steel powder and coupling agent obtained before to obtain uniformly dispersed materials, and the water contained in the raw materials is removed through frictional heating, self-friction heating to 120°C, and then cooling down to 45°C before discharging.

[0064] (2) extruder extrusion: the mixed materials are added into a hopper, and the materials pass through the hopper into an extruder, and after screw extrusion and plasticization, the materials become high-viscosity state and are continuously extruded through a die. The process parameters are as follows: main machine current: 16-20 A, screw rotation speed: 17.7 rpm, traction speed: 0.8 m / min, main machine barrel temperature 1-4 zone: 180°C, 185°C, 188°C, 185°C, combined core temperature: 185°C, die temperature 1-4 zone: 180°C, 180°C, 178°C, 175°C.

[0065] (3) cooling and shaping: the strip-shaped material extruded from the die is cooled and shaped in water, the material temperature is reduced, and becomes continuous strip-shaped material.

[0066] (4) traction: the continuous strip-shaped material moves forward at a uniform speed under the action of a traction device.

[0067] (5) cutting: the final granulation is completed by a cutting machine under the control of an encoder pulse signal, and the length of the granules is controlled by the cutting frequency.

[0068] The PVC material prepared in the comparative example has a Vicat softening temperature of 92°C, a tensile strength of 25.6 Mpa, and a tensile modulus of 4.25 x 10 3 Mpa.

[0069] Comparative Example 2

[0070] Raw materials: 100 parts of PVC resin powder, 20 parts of waste phenolic glass steel powder, 2 parts of titanate coupling agent, 10 parts of ACR impact modifier, 3 parts of calcium-zinc stabilizer, 0.5 parts of titanium white powder, 100 parts of calcium carbonate powder, 1 part of stearic acid lubricant, and 1 part of PE wax lubricant, by mass.

[0071] Preparation method, as shown in Figure 1 The specific steps are as follows:

[0072] (1) Mixing: the activated waste glass steel powder and coupling agent are added into a high-speed mixer in sequence for stirring treatment, the temperature is increased to 110°C by self-friction, and then the temperature is decreased, and the coupling agent is uniformly dispersed on the surface of the glass steel powder by stirring. Then, the PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant are added, and the above-mentioned materials and the mixture of the waste glass steel powder and coupling agent obtained before are stirred together by using a high-speed mixer to obtain a uniformly dispersed material, and the water contained in the raw materials is removed by frictional heat, and the temperature is increased to 120°C by self-friction, and then the temperature is decreased to 45°C, and then the material is discharged.

[0073] (2) Extrusion: the mixed material is added into a hopper, and the material passes through the hopper into an extruder, and the material becomes high-viscosity state by screw extrusion and plasticization process, and is continuously extruded through a die. The main machine current is 16-20A, the screw rotation speed is 17.7 rpm, the traction speed is 0.8 m / min, the main machine barrel temperature of zone 1-4 is 180°C, 185°C, 188°C, and 185°C, the combined core temperature is 185°C, and the die temperature of zone 1-4 is 180°C, 180°C, 178°C, and 175°C.

[0074] (3) Cooling and shaping: the strip-shaped material extruded from the die is cooled and shaped in water, the material temperature is reduced, and becomes a continuous strip-shaped material.

[0075] (4) Traction: the continuous strip-shaped material moves forward at a uniform speed under the action of a traction device.

[0076] (5) Cutting: the final granulation is completed by a cutting machine under the control of an encoder pulse signal, and the length of the granules is controlled by the cutting frequency.

[0077] The waste glass steel reinforced PVC material prepared in the present comparative example has a Vicat softening temperature of 98°C, a tensile strength of 32.9 MPa, and a tensile modulus of 5.63 x 10 3 MPa.

[0078] By comparing example 1 and comparative example 1-2, it can be seen that when the waste phenolic glass steel powder is directly added into the PVC material, the performance increase of the Vicat softening temperature, tensile strength and tensile modulus is not obvious. When the waste phenolic glass steel powder is activated by blending with glycerol monostearate and then added into the PVC material, the Vicat softening temperature, tensile strength and tensile modulus can be significantly improved.

[0079] In addition, by comparing example 1 and example 2, it can be seen that in the waste glass steel reinforced PVC material provided by the present application, the content of calcium carbonate powder also affects the Vicat softening temperature, tensile strength and tensile modulus, and the effect is better when the addition amount of calcium carbonate powder is 100 parts.

[0080] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A waste glass reinforced PVC material, characterized in that, The raw materials include, in terms of mass fraction: PVC resin powder 100 parts, activated waste glass fiber reinforced plastic powder 20-30 parts, coupling agent 1-3 parts, impact modifier 10-15 parts, stabilizer 3-5 parts, titanium white powder 0.5-1.5 parts, calcium carbonate powder 70-130 parts, and lubricant 2-5 parts; The activated waste glass fiber reinforced plastic powder is obtained by activating the surface of waste glass fiber reinforced plastic powder with an activating agent, the activating agent is glycerol monostearate, and the mass ratio of waste glass fiber reinforced plastic powder to activating agent is 100:2-4; and the surface is activated by blending the activating agent with the waste glass fiber reinforced plastic powder.

2. The waste glass reinforced PVC material as claimed in claim 1, wherein, The coupling agent is one or more of silane coupling agent, titanate coupling agent, aluminite coupling agent, double metal coupling agent, phosphate coupling agent, and borate coupling agent.

3. The waste fiberglass reinforced PVC material as described in claim 1, characterized in that, The impact modifier is one or more of CPE, impact ACR, and MBS.

4. The waste fiberglass reinforced PVC material as described in claim 1, characterized in that, The stabilizer is one or more of lead salt stabilizer, calcium-zinc stabilizer, and rare earth stabilizer.

5. The recycled glass reinforced PVC material as claimed in claim 1, wherein the said recycled glass is in the form of glass beads having a diameter of 0.1 to 0.5 mm. The lubricant is one or more of PE wax, microcrystalline wax, stearic acid, zinc stearate, and calcium stearate.

6. The waste fiberglass reinforced PVC material as described in claim 1, characterized in that, The blending temperature is 50-65℃.

7. The waste fiberglass reinforced PVC material as described in claim 1, characterized in that, The calcium carbonate powder is 90-110 parts.

8. The waste glass reinforced PVC material as claimed in claim 7, wherein the waste glass is in the form of glass fibers. The calcium carbonate powder is 95-105 parts.

9. A method for preparing the waste glass fiber reinforced PVC material according to any one of claims 1 to 8, characterized in that, The activated waste glass fiber reinforced plastic powder is stirred with the coupling agent to uniformly disperse the coupling agent on the surface of the glass fiber reinforced plastic powder, and then the PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant are added and stirred to obtain a mixture; the mixture is extruded by an extruder, and then sequentially cooled and shaped, pulled, and cut to obtain the product.

10. The method for preparing waste fiberglass reinforced PVC material as described in claim 9, characterized in that, The activated waste glass fiber reinforced plastic powder is stirred with the coupling agent and heated to 100-120℃, and then cooled and stirred to uniformly disperse the coupling agent on the surface of the glass fiber reinforced plastic powder.

11. The method for preparing waste fiberglass reinforced PVC material as described in claim 10, characterized in that, The activated waste glass fiber reinforced plastic powder and the coupling agent are added to a high-speed mixer and stirred to heat to 100-120℃ by self-friction.

12. The method for preparing waste fiberglass reinforced PVC material as described in claim 9, characterized in that, After the PVC resin powder, impact modifier, stabilizer, titanium white powder, calcium carbonate powder, and lubricant are added, the water contained in the raw materials is removed by self-friction heating.

13. The method for preparing waste fiberglass reinforced PVC material as described in claim 12, characterized in that, The temperature is heated to 110-130℃ by self-friction, and then cooled to 40-50℃ to discharge the material.

14. The method for preparing waste fiberglass reinforced PVC material as described in claim 9, characterized in that, The material is changed into a sticky state by screw extrusion and plasticization by the extruder, and continuously extruded through a die.

15. The method for preparing waste fiberglass reinforced PVC material as described in claim 14, characterized in that, The process parameters of the extruder are as follows: the main machine current is 16-20A, the screw rotation speed is 17.0-18.0 rpm, the pulling speed is 0.7-0.9 m / min, the main machine cylinder temperature is 179-181℃, 184-186℃, 187-189℃, and 184-186℃ from the first zone to the fourth zone, the combined core temperature is 184-186℃, and the die temperature is 179-181℃, 179-181℃, 177-179℃, and 174-176℃ from the first zone to the fourth zone.

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