阅读说明：本技术 一种耐腐蚀pvc片材 (Corrosion-resistant PVC sheet ) 是由 徐云生 徐勇 袁海华 于 2020-12-09 设计创作，主要内容包括：本发明提供一种耐腐蚀PVC片材,涉及材料领域。该基于一种耐腐蚀PVC片材,它是由下述重量的原料组成的：聚氯乙烯10-20kg,钙粉0.1-0.3kg,外滑0.1-0.3kg,抗冲剂3-5kg,增塑剂0.8-1kg,POP0.5-1.5kg,稳定剂1.1-1.3kg,内滑0.3-0.5kg,抗氧剂0.5-1.5kg,S1：将钙粉0.1-0.3kg放入到搅拌箱里面,然后再向里面加入外滑0.1-0.3kg,然后在加入0.5-1kg的自来水,然后再接着搅拌1-3分钟；S2：向第一步的搅拌箱内部加入增塑剂0.8-1kg,抗冲剂3-5kg,并且控制先加入增塑剂0.8-1kg再加入抗冲剂3-5kg；S3：接着将内滑0.3-0.5kg与稳定剂1.1-1.3kg加入第二步混合料里面,然后搅拌3-5分钟,再加入自来水0.3-0.5kg,搅拌2分钟,最后控制混合之后的液体内部温度不超过120摄氏度,并且内外温差不大于10摄氏度。通过各种原料之间的配合比,使得PVC片材更具有抗腐蚀性。(The invention provides a corrosion-resistant PVC sheet, and relates to the field of materials. The corrosion-resistant PVC sheet is composed of the following raw materials by weight: 10-20kg of polyvinyl chloride, 0.1-0.3kg of calcium powder, 0.1-0.3kg of external slip, 3-5kg of impact resistant agent, 0.8-1kg of plasticizer, 0.5-1.5kg of POP, 1.1-1.3kg of stabilizer, 0.3-0.5kg of internal slip, 0.5-1.5kg of antioxidant, S1: 0.1-0.3kg of calcium powder is put into a stirring box, then 0.1-0.3kg of outer slide is added into the stirring box, then 0.5-1kg of tap water is added, and then the stirring is carried out for 1-3 minutes; s2: 0.8-1kg of plasticizer and 3-5kg of impact resistant agent are added into the stirring box in the first step, and 0.8-1kg of plasticizer is added first and then 3-5kg of impact resistant agent is added; s3: then 0.3-0.5kg of internal slip and 1.1-1.3kg of stabilizer are added into the mixture in the second step, then the mixture is stirred for 3-5 minutes, 0.3-0.5kg of tap water is added, the mixture is stirred for 2 minutes, and finally the internal temperature of the mixed liquid is controlled not to exceed 120 ℃, and the internal and external temperature difference is not more than 10 ℃. Through the mixing proportion of various raw materials, the PVC sheet has better corrosion resistance.)

1. The corrosion-resistant PVC sheet is characterized by comprising the following raw materials by weight:

10-20kg of polyvinyl chloride, 0.1-0.3kg of calcium powder, 0.1-0.3kg of external slip, 3-5kg of impact resistant agent, 0.8-1kg of plasticizer, 0.5-1.5kg of POP, 1.1-1.3kg of stabilizer, 0.3-0.5kg of internal slip and 0.5-1.5kg of antioxidant.

2. A corrosion resistant PVC sheet according to claim 1, comprising the steps of:

s1: putting 0.1-0.3kg of calcium powder and 10-20kg of polyvinyl chloride into a stirring box, then adding 0.1-0.3kg of outer slip into the stirring box, controlling the stirring time to be 10-20 minutes, then adding 0.5-1kg of tap water, and then stirring for 1-3 minutes;

s2: adding 0.8-1kg of plasticizer and 3-5kg of impact resistant agent into the stirring box in the first step, adding 0.8-1kg of plasticizer and then 3-5kg of impact resistant agent at the time interval of 2-4 minutes, heating the mixture through a heating pipe, and standing for 2 minutes;

s3: then adding 0.3-0.5kg of internal slip and 1.1-1.3kg of stabilizer into the mixture in the second step, stirring for 3-5 minutes, adding 0.3-0.5kg of tap water, stirring for 2 minutes, and finally controlling the internal temperature of the mixed liquid not to exceed 120 ℃ and the internal and external temperature difference not to exceed 10 ℃;

s4: then, mixing 0.5-1.5kg of POP and 0.5-1.5kg of antioxidant, pouring the mixture into a stirring box, and then quickly stirring to control the stirring time to be 5-10 minutes;

s5: adding the finally obtained mixed solution into a melting machine, and heating the mixed solution through the melting machine;

s6: pre-crystallizing and drying the melt to prepare crystals, wherein the pre-crystallizing and drying temperature is controlled at 185 ℃, and the drying time is controlled at 2 h;

s7: and adding the crystallized crystals into an extruder, controlling the melting temperature of the extruder, and finally extruding the crystals through the extruder to obtain the sheet.

3. A corrosion resistant PVC sheet according to claim 2, wherein: the stirring speed of the stirring box in the first step is 100-.

4. A corrosion resistant PVC sheet according to claim 2, wherein: and step two, heating the conventional heater of the pipe, and controlling the temperature difference between the inside and the outside not more than 10 ℃ during heating, wherein the highest temperature is not more than 120 ℃.

5. A corrosion resistant PVC sheet according to claim 2, wherein: the heating temperature of the melting machine is 130-150 ℃, and the melting time is 1-2 h.

6. A corrosion resistant PVC sheet according to claim 2, wherein: the extruder is a twin-screw extruder and the mold temperature is controlled at 100-110 ℃.

Technical Field

The invention relates to the technical field of materials, in particular to a corrosion-resistant PVC sheet.

Background

The PVC film mainly comprises polyvinyl chloride, and other components are added to enhance the heat resistance, toughness, ductility and the like of the PVC film. The top layer of the surface film is paint, the middle layer is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is a synthetic material that is enjoyed, popular and widely used in the world today. The global usage amount of the PVC film is the second highest among various synthetic materials, and PVC is the most suitable material among materials capable of producing three-dimensional surface films, and in order to enable PVC to have higher corrosion resistance, a novel raw material ratio needs to be used.

PVC on the market is generally used in some acidic or alkaline environments, so that the PVC is required to have higher corrosion resistance, the PVC sheet on the market can only be used in a slightly acidic or slightly alkaline environment at present, and cannot be used for a long time in a strong acidic or alkaline environment, so that the PVC sheet with high corrosion resistance is required at present.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a corrosion-resistant PVC sheet, which solves the problem that the sheet cannot be used in a high-acidity or alkaline environment for a long time.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the corrosion-resistant PVC sheet is prepared from the following raw materials in parts by weight:

10-20kg of polyvinyl chloride, 0.1-0.3kg of calcium powder, 0.1-0.3kg of external slip, 3-5kg of impact resistant agent, 0.8-1kg of plasticizer, 0.5-1.5kg of POP, 1.1-1.3kg of stabilizer, 0.3-0.5kg of internal slip and 0.5-1.5kg of antioxidant.

Preferably, the corrosion-resistant PVC sheet comprises the following steps:

s1: putting 0.1-0.3kg of calcium powder and 10-20kg of polyvinyl chloride into a stirring box, then adding 0.1-0.3kg of outer slip into the stirring box, controlling the stirring time to be 10-20 minutes, then adding 0.5-1kg of tap water, and then stirring for 1-3 minutes;

s2: adding 0.8-1kg of plasticizer and 3-5kg of impact resistant agent into the stirring box in the first step, adding 0.8-1kg of plasticizer and then 3-5kg of impact resistant agent at the time interval of 2-4 minutes, heating the mixture through a heating pipe, and standing for 2 minutes;

s3: then adding 0.3-0.5kg of internal slip and 1.1-1.3kg of stabilizer into the mixture in the second step, stirring for 3-5 minutes, adding 0.3-0.5kg of tap water, stirring for 2 minutes, and finally controlling the internal temperature of the mixed liquid not to exceed 120 ℃ and the internal and external temperature difference not to exceed 10 ℃;

s4: then, mixing 0.5-1.5kg of POP and 0.5-1.5kg of antioxidant, pouring the mixture into a stirring box, and then quickly stirring to control the stirring time to be 5-10 minutes;

s5: adding the finally obtained mixed solution into a melting machine, and heating the mixed solution through the melting machine;

s6: pre-crystallizing and drying the melt to prepare crystals, wherein the pre-crystallizing and drying temperature is controlled at 185 ℃, and the drying time is controlled at 2 h;

s7: and adding the crystallized crystals into an extruder, controlling the melting temperature of the extruder, and finally extruding the crystals through the extruder to obtain the sheet.

Preferably, the stirring speed of the stirring box in the first step is 100-.

Preferably, the conventional heater of the tube in the second step is heated, and the temperature difference between the inside and the outside is controlled to be not more than 10 ℃ during heating, and the highest temperature is not more than 120 ℃.

Preferably, the heating temperature of the melting machine is 130-150 ℃, and the melting time is 1-2 h.

Preferably, the extruder is a twin screw extruder and the mold temperature is controlled at 100-110 ℃.

(III) advantageous effects

The invention provides a corrosion-resistant PVC sheet. The method has the following beneficial effects:

1. according to the invention, the plasticizer can increase the internal connectivity of the sheet when in use, prevent cracks from occurring in an acidic or alkaline environment, and prolong the service life of the PVC sheet.

2. According to the invention, the antioxidant is arranged, so that the PVC sheet can be prevented from being oxidized or acidified in an acidic or alkaline environment when in use, the overall strength and rigidity of PVC are improved, the corrosion resistance is improved, and the service life of the device is prolonged.

3. According to the invention, the stability of the prepared PVC sheet can be higher through the stabilizer, and the corrosion resistance of the PVC sheet is increased.

4. In the invention, the performance of the PVC sheet can be kept in the best state by controlling the pre-crystallization and drying temperatures to be 185 ℃ and the drying time to be 2 h.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

the embodiment of the invention provides a corrosion-resistant PVC sheet, which is composed of the following raw materials by weight:

10kg of polyvinyl chloride, 0.1kg of calcium powder, 0.1kg of external slip, 3kg of impact resistant agent, 0.8kg of plasticizer, 0.5kg of POP, 1.1kg of stabilizer, 0.3kg of internal slip and 0.5kg of antioxidant.

A corrosion resistant PVC sheet comprising the steps of:

s1: putting 0.1kg of calcium powder and 10kg of polyvinyl chloride into a stirring box, then adding 0.1kg of outer slip into the stirring box, controlling the stirring time to be 10-20 minutes, then adding 0.5kg of tap water, and then stirring for 1-3 minutes;

s2: 0.8kg of plasticizer and 3kg of impact resistant agent are added into the stirring box in the first step, 0.8kg of plasticizer and 3kg of impact resistant agent are added at first and are controlled, the time interval between the plasticizer and the impact resistant agent is 2-4 minutes, the mixture is heated through a heating pipe and then stands for 2 minutes, the internal connectivity of the sheet can be increased when the sheet is used through the plasticizer, cracks are prevented from occurring in an acidic or alkaline environment, and the service life of the PVC sheet is prolonged;

s3: then adding 0.3kg of internal slip and 1.1kg of stabilizer into the mixture obtained in the second step, stirring for 3-5 minutes, adding 0.3kg of tap water, stirring for 2 minutes, and finally controlling the internal temperature of the mixed liquid to be not more than 120 ℃ and the internal and external temperature difference to be not more than 10 ℃;

s4: then mixing POP0.5kg and antioxidant 0.5kg, then pouring the mixture into a stirring box, and then rapidly stirring to control the stirring time to be 5-10 minutes, so that the PVC sheet can be prevented from being oxidized or acidified in an acidic or alkaline environment when in use through the antioxidant, the overall strength and rigidity of the PVC are increased, the corrosion resistance is improved, and the service life of the device is prolonged;

s5: adding the finally obtained mixed solution into a melting machine, and heating the mixed solution through the melting machine;

s6: pre-crystallizing and drying the melt to prepare crystals, wherein the pre-crystallizing and drying temperature is controlled at 185 ℃, and the drying time is controlled at 2 h;

s7: and adding the crystallized crystals into an extruder, controlling the melting temperature of the extruder, and finally extruding the crystals through the extruder to obtain the sheet.

In the first step, the stirring speed of the stirring box is 100-.

And (5) heating the conventional heater of the pipe in the step two, and controlling the temperature difference between the inside and the outside not to be more than 10 ℃ during heating, wherein the highest temperature is not more than 120 ℃.

The heating temperature of the melting machine is 130-150 ℃, and the melting time is 1-2 h.

The extruder was a twin screw extruder and the mold temperature was controlled at 100 ℃ and 110 ℃.

Example two:

the embodiment of the invention provides a corrosion-resistant PVC sheet, which is composed of the following raw materials by weight:

15kg of polyvinyl chloride, 0.1kg of calcium powder, 0.1kg of external slip, 4kg of impact resistant agent, 0.9kg of plasticizer, POP1kg, 1.2kg of stabilizer, 0.4kg of internal slip and 1kg of antioxidant.

A corrosion resistant PVC sheet comprising the steps of:

s1: putting 0.1kg of calcium powder and 15kg of polyvinyl chloride into a stirring box, then adding 0.1-0.3kg of outer slip into the stirring box, controlling the stirring time to be 10-20 minutes, then adding 0.5kg of tap water, and then stirring for 1-3 minutes;

s2: 0.9kg of plasticizer and 4kg of impact resistant agent are added into the stirring box in the first step, 0.9kg of plasticizer is added first, then 4kg of impact resistant agent is added, the time interval between the two steps is 2-4 minutes, then the mixture is heated through a heating pipe, and then the mixture is kept stand for 2 minutes, so that the internal connectivity of the sheet can be increased when the sheet is used through the plasticizer, cracks are prevented from occurring in an acidic or alkaline environment, and the service life of the PVC sheet is longer;

s3: then adding 0.4kg of internal slip and 1.2kg of stabilizer into the mixture obtained in the second step, stirring for 3-5 minutes, adding 0.5kg of tap water, stirring for 2 minutes, and finally controlling the internal temperature of the mixed liquid to be not more than 120 ℃ and the internal and external temperature difference to be not more than 10 ℃;

s4: then POP1kg and 1kg of antioxidant are mixed firstly, then the mixture is poured into a stirring box and then is quickly stirred, so that the stirring time is controlled to be 5-10 minutes, the PVC sheet can be prevented from being oxidized or acidified in an acidic or alkaline environment when in use through the antioxidant, the overall strength and rigidity of PVC are increased, the corrosion resistance is improved, and the service life of the device is prolonged;

s5: adding the finally obtained mixed solution into a melting machine, and heating the mixed solution through the melting machine;

s6: pre-crystallizing and drying the melt to prepare crystals, wherein the pre-crystallizing and drying temperature is controlled at 185 ℃, and the drying time is controlled at 2 h;

s7: and adding the crystallized crystals into an extruder, controlling the melting temperature of the extruder, and finally extruding the crystals through the extruder to obtain the sheet.

In the first step, the stirring speed of the stirring box is 100-.

And (5) heating the conventional heater of the pipe in the step two, and controlling the temperature difference between the inside and the outside not to be more than 10 ℃ during heating, wherein the highest temperature is not more than 120 ℃.

The heating temperature of the melting machine is 130-150 ℃, and the melting time is 1-2 h.

The extruder was a twin screw extruder and the mold temperature was controlled at 100 ℃ and 110 ℃.

Example three:

the corrosion-resistant PVC sheet is prepared from the following raw materials in parts by weight:

20kg of polyvinyl chloride, 0.3kg of calcium powder, 0.3kg of external slip, 5kg of impact resistant agent, 1kg of plasticizer, 0.1.5kg of POP, 1.3kg of stabilizer, 0.5kg of internal slip and 1.5kg of antioxidant.

A corrosion resistant PVC sheet comprising the steps of:

s1: putting 0.3kg of calcium powder and 20kg of polyvinyl chloride into a stirring box, then adding 0.3kg of outer slip into the stirring box, controlling the stirring time to be 10-20 minutes, then adding 1kg of tap water, and then stirring for 1-3 minutes;

s2: 1kg of plasticizer and 5kg of impact resistant agent are added into the stirring box in the first step, 1kg of plasticizer and 5kg of impact resistant agent are added at first and are controlled, the time interval between the two steps is 2-4 minutes, then the mixture is heated through a heating pipe and stands for 2 minutes, the internal connectivity of the sheet can be increased when the sheet is used through the plasticizer, cracks in an acidic or alkaline environment are prevented, and the service life of the PVC sheet is longer;

s3: then adding 0.5kg of internal slip and 1.3kg of stabilizer into the mixture obtained in the second step, stirring for 3-5 minutes, adding 0.5kg of tap water, stirring for 2 minutes, and finally controlling the internal temperature of the mixed liquid not to exceed 120 ℃ and the internal and external temperature difference not to be larger than 10 ℃;

s4: then, POP1.5kg and antioxidant 1.5kg are mixed firstly, then the mixture is poured into a stirring box, and then the mixture is quickly stirred, so that the stirring time is controlled to be 5-10 minutes, and the PVC sheet can be prevented from being oxidized or acidified in an acidic or alkaline environment when in use through the antioxidant, the overall strength and rigidity of PVC are improved, the corrosion resistance is improved, and the service life of the device is prolonged;

s5: adding the finally obtained mixed solution into a melting machine, and heating the mixed solution through the melting machine;

s6: pre-crystallizing and drying the melt to prepare crystals, wherein the pre-crystallizing and drying temperature is controlled at 185 ℃, and the drying time is controlled at 2 h;

s7: and adding the crystallized crystals into an extruder, controlling the melting temperature of the extruder, and finally extruding the crystals through the extruder to obtain the sheet.

In the first step, the stirring speed of the stirring box is 100-.

And (5) heating the conventional heater of the pipe in the step two, and controlling the temperature difference between the inside and the outside not to be more than 10 ℃ during heating, wherein the highest temperature is not more than 120 ℃.

The heating temperature of the melting machine is 130-150 ℃, and the melting time is 1-2 h.

The extruder was a twin screw extruder and the mold temperature was controlled at 100 ℃ and 110 ℃.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.