CN114350084A - Novel PVC plastic building template and production process thereof - Google Patents
Novel PVC plastic building template and production process thereof Download PDFInfo
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- CN114350084A CN114350084A CN202210021362.3A CN202210021362A CN114350084A CN 114350084 A CN114350084 A CN 114350084A CN 202210021362 A CN202210021362 A CN 202210021362A CN 114350084 A CN114350084 A CN 114350084A
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
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- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 7
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Images
Abstract
The invention provides a novel PVC plastic building template and a production process thereof, relating to the technical field of building templates. This novel PVC plastics building templates, including PVC template body, the inside microbubble that evenly is provided with of PVC template body, this novel PVC plastics building templates, including following mass percent's raw and other materials: PVC material: 45-55 wt%, plastic steel: 30-40 wt%, foaming regulator: 5-8 wt%, stabilizer: 2-3 wt%, impact modifier: 4-5 wt%, processing modifier: 1-1.5 wt%, imported oxidized polyethylene wax: 0.2-0.3 wt%, internal lubricant: 0.4-0.6 wt%, PVC auxiliary agent: 1-2 wt%, hydroxyethyl cellulose: 0.8 to 1.2 wt%. The PVC material and the plastic steel material are used as the main material and the filling material, so that the manufacturing cost is low, the repeated utilization rate is high, the cost is saved, the product process and the formula can be randomly adjusted according to the use requirement, so that materials with different properties and shapes are produced, the utilization rate of the section material is close to 100 percent, and the environment is greatly protected.
Description
Technical Field
The invention relates to the technical field of building templates, in particular to a novel PVC plastic building template and a production process thereof.
Background
The building template is a temporary supporting structure, the building templates used in China at present mainly comprise wood templates, steel templates, plywood templates, wood plywood templates and bamboo plywood templates, the templates are earlier applied in China, but a large amount of wood and bamboo materials are consumed, the detachable templates are easy to split, the templates are not waterproof when not put in goods, are not acid-base resistant, are greatly influenced by weather, have short service life and high loss rate, generally have one to five turnover times, and more need to seek a substitute product for China with abundant forest resources, the steel templates are substitutes of wood and bamboo templates, and the products are standardized and form a series.
The existing steel template has the advantages that a large amount of wood can be saved, the steel template can be repeatedly used for many times, the turnover utilization rate can reach 30-40 times, and the steel template still has the following defects: firstly, the steel template cost is high, the utilization ratio is general, the average price is 280 yuan/square meter, secondly, the steel template is too heavy, the hoisting is inconvenient in the construction, the disassembly is difficult, moreover, the steel template is limited by the weight, the area of a single template is not large, the number of splicing blocks is more in the use, the construction process is time-consuming and labor-consuming, in addition, the steel template has certain affinity with cement, the surface of cement products such as columns or beams is easy to be peeled off when the template is disassembled, the quality is influenced, and in addition, the steel template also has the defect of easy corrosion.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a novel PVC plastic building template and a production process thereof, and solves the problems of low utilization rate of the building template, inconvenience in assembly and disassembly and short service life.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a novel PVC plastics building templates, includes PVC template body, PVC template body is inside evenly to be provided with the microbubble.
Preferably, the novel PVC plastic building template comprises the following raw materials in percentage by mass: PVC material: 45-55 wt%, plastic steel: 30-40 wt%, foaming regulator: 5-8 wt%, stabilizer: 2-3 wt%, impact modifier: 4-5 wt%, processing modifier: 1-1.5 wt%, imported oxidized polyethylene wax: 0.2-0.3 wt%, internal lubricant: 0.4-0.6 wt%, PVC auxiliary agent: 1-2 wt%, hydroxyethyl cellulose: 0.8-1.2 wt%;
the stabilizer comprises the following raw materials in percentage by mass: zinc stearate: 20-25 wt%, calcium stearate: 20-25 wt%, hydrotalcite: 15-20 wt%, emulsified paraffin: 3-8 wt%, polyethylene wax: 5-10 wt%, fibrous nano calcium carbonate: 25-30 wt%, dibenzoylmethane: 0.1-1 wt%, dipentaerythritol: 3 to 8 wt%.
Preferably, the production process of the novel PVC plastic building template comprises the following steps:
s1, hot mixing of raw materials
Introducing zinc stearate, calcium stearate, hydrotalcite, emulsified paraffin, polyethylene wax, fibrous nano calcium carbonate, dibenzoyl methane and pentaerythritol into a homogenizer, homogenizing for 15-25 min to obtain a stabilizer, and putting a PVC material, a plastic steel material, a foaming regulator, the stabilizer, an impact modifier, a processing modifier, imported oxidized polyethylene wax, an internal lubricant and a PVC auxiliary agent into a hot mixing pot for high-speed hot mixing and stirring to obtain a hot mixed raw material;
s2. raw material cold mixing
Putting the hot mixed raw material into a cold mixing pot, carrying out low-speed cold mixing stirring to obtain a cold mixed raw material, putting the cold mixed raw material, hydroxyethyl cellulose and purified water into a wet granulator for granulation to obtain a granular wet material, drying the granular wet material through a vacuum freeze dryer to obtain raw material granules, putting the raw material granules into a PVC curing tank for curing, and obtaining cured granules after 24-28 hours;
s3, extrusion molding
Putting cured particles into a screw extruder, plasticizing the cured particles by the screw extruder to convert the cured particles from a solid state into a viscous-state material, decomposing and foaming a foaming regulator to form micro bubbles, plasticizing the material containing the micro bubbles, then conveying the material to a die opening, and performing extrusion operation to obtain an extruded material, wherein the plasticizing initial temperature is 173 ℃, if the material at an observation opening is powdery, the temperature of a machine barrel is set to be too low, the plasticizing temperature is increased, if the material at the observation opening is in a belt shape, the temperature of the machine barrel is set to be too high, the plasticizing temperature is reduced, the plasticizing temperature is kept between 171 ℃ and 175 ℃, uniformly cooling the extruded material through a cooling pipe system in a fourth area of the machine barrel, and controlling the thickness of the extruded material by adopting a pressure plate type structure controlled by an oil pressure or air pressure system;
s4, template post-processing
Adopt the combination of roller formula to pull the extrusion material, pull out the extrusion material is even from the clamp plate formula structure, carry out automatic cutting to the extrusion material through cutting system according to customer's required machining dimension, obtain PVC template body.
Preferably, the homogenization temperature in the S1 is 65-75 ℃.
Preferably, the PVC auxiliary agent is an acrylate copolymer.
Preferably, the hot mixing and stirring temperature in the S1 is 120-125 ℃, and the hot mixing and stirring time is 7-10 min.
Preferably, the temperature of the hot mixed raw material put into the S2 during cold mixing and stirring is 35-45 ℃, and the cold mixing and stirring time is 5-10 min.
Preferably, the decomposition foaming temperature of the foaming regulator is 140 ℃, the head temperature of the screw extruder in the S3 is 145-150 ℃, and the side plate temperature of the screw extruder in the S3 is 150-155 ℃.
(III) advantageous effects
The invention provides a novel PVC plastic building template and a production process thereof. The method has the following beneficial effects:
1. the PVC material and the plastic steel material are used as the main material and the filling material, so that the manufacturing cost is low, the repeated utilization rate is high, the cost is saved, the product process and the formula can be randomly adjusted according to the use requirement, so that materials with different properties and shapes are produced, the utilization rate of the section material is close to 100 percent, and the environment is greatly protected.
2. The invention has stable and reliable production, large template yield, high production efficiency, no need of secondary processing of the template, light weight, convenient operation, convenient installation and disassembly, time saving and labor saving.
3. The invention does not contain any glue, has good waterproof effect, strong fire resistance, acid and alkali resistance, corrosion resistance, high weather resistance, extremely low maintenance cost and long service life of the building template.
4. The product has high parameter precision, does not need a release agent, and has smooth and flat release effect.
Drawings
Fig. 1 is a perspective view of the present invention.
Wherein, 1, PVC template body; 2. microbubbles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the 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.
Example (b):
as shown in fig. 1, an embodiment of the present invention provides a novel PVC plastic building template, which includes a PVC template body 1, and microbubbles 2 are uniformly disposed inside the PVC template body 1.
A novel PVC plastic building template comprises the following raw materials in percentage by mass: PVC material: 50 wt%, plastic steel material: 32 wt%, foaming regulator: 6 wt%, stabilizer: 3 wt%, impact modifier: 4.5 wt%, processing modifier: 1.5 wt%, imported oxidized polyethylene wax: 0.3 wt%, internal lubricant: 0.5 wt%, PVC auxiliary agent: 1.2 wt%, hydroxyethyl cellulose: 1 wt% of PVC foaming regulator, wherein long molecular chains of the PVC foaming regulator are wound and adhered on molecular chains of PVC materials to form a certain net structure, so that on one hand, material plasticization is promoted, on the other hand, the strength of PVC melt is improved, the cell walls can bear the pressure of gas in the cells in the foaming process, the cell walls cannot break due to insufficient strength, the impact modifier increases the hardness and the impact resistance of the PVC plastic building template, the processing modifier improves the processing performance, the thermal deformation and the glossiness of the PVC plastic building template, the imported oxidized polyethylene wax reduces the adhesive force of thermoplastic fusion and increases the fluidity of the melt, the demolding is improved, the yield is improved, the internal lubricant improves the smoothness, calcium powder is not added into main materials and fillers of the PVC plastic building template, the hardness of the template is more than 80 degrees Shore, even 90 Shore hardness can be achieved, and the surface of the plate is smooth like a mirror surface;
the stabilizer comprises the following raw materials in percentage by mass: zinc stearate: 20 wt%, calcium stearate: 20 wt%, hydrotalcite: 18 wt%, emulsified paraffin: 6 wt%, polyethylene wax: 6 wt%, fibrous nano calcium carbonate: 25 wt%, dibenzoylmethane: 1 wt%, dipentaerythritol: 4 wt%, zinc stearate improves the thermal stability of the template and plays a role in thickening, calcium stearate enables the template to be convenient for demolding, hydrotalcite is a heat stabilizer and is used for modifying PVC materials and improving the heat resistance of the PVC materials, emulsified paraffin has an emulsifying and dispersing effect, imported oxidized polyethylene wax improves the cold resistance, the heat resistance, the chemical resistance and the wear resistance of PVC plastic building templates, fibrous nano calcium carbonate is used as a filler and has a reinforcing effect and improves the heat resistance of the templates, dibenzoyl methane enhances the light stability and the heat stability of the templates, and dipentaerythritol enables the templates to have the capabilities of scratch resistance, corrosion resistance and friction resistance.
A production process of a novel PVC plastic building template comprises the following steps:
s1, hot mixing of raw materials
Introducing zinc stearate, calcium stearate, hydrotalcite, emulsified paraffin, polyethylene wax, fibrous nano calcium carbonate, dibenzoyl methane and pentaerythritol into a homogenizer, homogenizing for 16min to obtain a stabilizer, putting a PVC material, a plastic steel material, a foaming regulator, the stabilizer, an impact modifier, a processing modifier, imported oxidized polyethylene wax, an internal lubricant and a PVC auxiliary agent into a hot mixing pot, and carrying out high-speed hot mixing stirring to obtain a hot mixing raw material, wherein the high-speed hot mixing stirring is not simple physical stirring and mixing but a kneading process, and the kneading is a special form of mixing and is a mixing operation depending on shearing action to reduce the aggregation size of the components and homogenize the components;
s2. raw material cold mixing
Putting the hot mixed raw material into a cold mixing pot, carrying out low-speed cold mixing stirring to obtain a cold mixed raw material, putting the cold mixed raw material, hydroxyethyl cellulose and purified water into a wet granulator for granulation to obtain a granular wet material, drying the granular wet material by a vacuum freeze dryer to obtain raw material granules, putting the raw material granules into a PVC curing tank for curing, and obtaining cured granules after 26 hours;
s3, extrusion molding
Putting cured particles into a screw extruder, plasticizing the cured particles by the screw extruder to convert the cured particles from a solid state into a viscous fluid material, heating the cured particles from the outside and self-shearing heat of the screw to further refine and homogenize the mixed material, having the mixing function of distributivity and dispersibility, decomposing and foaming a foaming regulator to form micro bubbles 2, plasticizing the material containing the micro bubbles 2, conveying the material to a die orifice, extruding to obtain an extruded material, wherein in the plasticizing process, the plasticizing initial temperature is 173 ℃, if the material at an observation port is powdery, the temperature of a machine barrel is set to be too low, the plasticizing temperature is increased, if the material at the observation port is in a belt shape, the temperature of the machine barrel is set to be too high, the plasticizing temperature is reduced, paste is avoided, the plasticizing temperature is kept between 171 and 175 ℃, and the extruded material is uniformly cooled by a cooling pipe system in a fourth area of the machine barrel, the thickness of the extruded material is controlled by adopting a pressing plate type structure controlled by an oil pressure or air pressure system;
s4, template post-processing
The PVC plastic building template can be recycled for more than 50 times, does not need a release agent, has smooth and flat demolding effect, does not need maintenance and can be recycled, saves the cost of at least 30 percent, has wide material source of the PVC plastic building template, low value and can be used as a material source for old materials or mixed materials, the invention can recycle 100% of scrapped products and recycled waste products, greatly protects the environment, is a manual integral synthetic product, can randomly adjust the product process and formula according to the use requirement, thereby producing materials with different properties and shapes, the utilization rate of the section material is close to 100%, the maintenance cost of the PVC plastic building template is extremely low, the service life of the product is several times of that of common natural wood, the precision of the product parameters is high, the thickness tolerance of the product is +/-0.01 mm, the density tolerance of the product is +/-0.02, the diagonal tolerance of the product is 1-3mm, and the length and width tolerance of the product is +/-2 mm, the invention does not contain any glue, has good waterproof effect, strong fire resistance, acid-base and corrosion resistance, high weather resistance, extremely low maintenance cost, long service life of the building template, stable production of the template, high yield, high efficiency, no secondary processing, time and labor saving, light weight of the product and convenient operation, subsequent processing such as cutting, drilling, sawing, etc. may be performed.
And in the S1, the homogenization temperature is 70 ℃, and the emulsified paraffin is fully melted at the temperature, so that all components of the stabilizer are uniformly distributed.
The PVC auxiliary agent is an acrylate copolymer, can play a role in promoting the plasticization of materials, has the effect of metal stripping, prevents the adhesion of a melt and the surface of metal, prolongs the start cycle, can obviously improve the surface brightness of a product, is suitable for the product with higher surface smoothness, has higher capacity of promoting the plasticization of the materials, can greatly increase the melt strength of the materials, improves the production stability, prolongs the production cycle and improves the mechanical property of the product.
And S1, the hot mixing and stirring temperature is 123 ℃, the hot mixing and stirring time is 8min, and all components of the raw materials are uniformly and fully absorbed by the PVC material in the hot mixing and stirring process, so that low-molecular volatile components are removed.
The temperature of the hot mixed raw material put in the S2 during cold mixing and stirring is 39 ℃, the hot mixed raw material is prevented from caking in the cold mixing and stirring process, and the cold mixing and stirring time is 8 min.
The decomposition foaming temperature of the foaming regulator is 140 ℃, the head temperature of the screw extruder in S3 is 147 ℃, the side plate temperature of the screw extruder in S3 is 152 ℃, the head temperature of the screw extruder is slightly higher than the decomposition foaming temperature of the foaming regulator, so that the foaming degree and quality are ensured, and the temperature of the side plates on the two sides of the screw extruder is relatively higher to supplement heat loss and facilitate material flow.
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.
Claims (8)
1. The utility model provides a novel PVC plastics building templates, includes PVC template body (1), its characterized in that: micro bubbles (2) are uniformly arranged inside the PVC template body (1).
2. The novel PVC plastic building template of claim 1, wherein: the material comprises the following raw materials in percentage by mass: PVC material: 45-55 wt%, plastic steel: 30-40 wt%, foaming regulator: 5-8 wt%, stabilizer: 2-3 wt%, impact modifier: 4-5 wt%, processing modifier: 1-1.5 wt%, imported oxidized polyethylene wax: 0.2-0.3 wt%, internal lubricant: 0.4-0.6 wt%, PVC auxiliary agent: 1-2 wt%, hydroxyethyl cellulose: 0.8-1.2 wt%;
the stabilizer comprises the following raw materials in percentage by mass: zinc stearate: 20-25 wt%, calcium stearate: 20-25 wt%, hydrotalcite: 15-20 wt%, emulsified paraffin: 3-8 wt%, polyethylene wax: 5-10 wt%, fibrous nano calcium carbonate: 25-30 wt%, dibenzoylmethane: 0.1-1 wt%, dipentaerythritol: 3 to 8 wt%.
3. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: the method comprises the following steps:
s1, hot mixing of raw materials
Introducing zinc stearate, calcium stearate, hydrotalcite, emulsified paraffin, polyethylene wax, fibrous nano calcium carbonate, dibenzoyl methane and pentaerythritol into a homogenizer, homogenizing for 15-25 min to obtain a stabilizer, and putting a PVC material, a plastic steel material, a foaming regulator, the stabilizer, an impact modifier, a processing modifier, imported oxidized polyethylene wax, an internal lubricant and a PVC auxiliary agent into a hot mixing pot for high-speed hot mixing and stirring to obtain a hot mixed raw material;
s2. raw material cold mixing
Putting the hot mixed raw material into a cold mixing pot, carrying out low-speed cold mixing stirring to obtain a cold mixed raw material, putting the cold mixed raw material, hydroxyethyl cellulose and purified water into a wet granulator for granulation to obtain a granular wet material, drying the granular wet material through a vacuum freeze dryer to obtain raw material granules, putting the raw material granules into a PVC curing tank for curing, and obtaining cured granules after 24-28 hours;
s3, extrusion molding
Putting cured particles into a screw extruder, plasticizing the cured particles by the screw extruder to convert the cured particles from a solid state into a viscous-state material, starting decomposition and foaming by a foaming regulator to form micro bubbles (2), plasticizing the material containing the micro bubbles (2), conveying the material to a die orifice, performing extrusion operation to obtain an extruded material, wherein in the plasticizing process, the plasticizing initial temperature is 173 ℃, if the material at an observation port is powdery, the temperature of a machine barrel is set too low, the plasticizing temperature is increased, if the material at the observation port is in a belt shape, the temperature of the machine barrel is set too high, the plasticizing temperature is reduced, the plasticizing temperature is kept between 171 and 175 ℃, uniformly cooling the extruded material by a cooling pipe system in a fourth area of the machine barrel, and controlling the thickness of the extruded material by adopting a pressure plate type structure controlled by an oil pressure or air pressure system;
s4, template post-processing
Adopt the combination of roller formula to pull extrusion material, pull out extrusion material is even from the clamp plate formula structure, carry out automatic cutting to extrusion material through cutting system according to customer's required machining dimension, obtain PVC template body (1).
4. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: the homogenizing temperature in the S1 is 65-75 ℃.
5. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: the PVC auxiliary agent is acrylate copolymer.
6. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: and in the S1, the hot mixing and stirring temperature is 120-125 ℃, and the hot mixing and stirring time is 7-10 min.
7. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: the temperature of the hot mixed raw material put into the S2 during cold mixing and stirring is 35-45 ℃, and the cold mixing and stirring time is 5-10 min.
8. The production process of the novel PVC plastic building template as claimed in claim 1, wherein the production process comprises the following steps: the decomposition foaming temperature of the foaming regulator is 140 ℃, the head temperature of the screw extruder in S3 is 145-150 ℃, and the side plate temperature of the screw extruder in S3 is 150-155 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021362.3A CN114350084A (en) | 2022-01-10 | 2022-01-10 | Novel PVC plastic building template and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021362.3A CN114350084A (en) | 2022-01-10 | 2022-01-10 | Novel PVC plastic building template and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114350084A true CN114350084A (en) | 2022-04-15 |
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| CN202210021362.3A Pending CN114350084A (en) | 2022-01-10 | 2022-01-10 | Novel PVC plastic building template and production process thereof |
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| CN106380738A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC (polyvinyl chloride) home decorative sheet and preparation method thereof |
| CN109354708A (en) * | 2018-09-19 | 2019-02-19 | 芜湖海螺型材科技股份有限公司 | A kind of PVC co-extrusion building template and preparation method thereof |
| CN109971081A (en) * | 2017-12-27 | 2019-07-05 | 江阴澄之星建筑装饰工程有限公司 | One kind can clot heavy metal free bamboo and woods fiber integrated wall plate and preparation method thereof |
| CN113698670A (en) * | 2021-10-09 | 2021-11-26 | 青岛佳百特新材料科技有限公司 | Calcium-zinc stabilizer and application thereof in SPC floor base material production |
| CN113881165A (en) * | 2021-11-03 | 2022-01-04 | 上海模新新材料科技有限公司 | New formula for improving Vicat softening temperature of PVC building template |
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| CN106380738A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC (polyvinyl chloride) home decorative sheet and preparation method thereof |
| CN109971081A (en) * | 2017-12-27 | 2019-07-05 | 江阴澄之星建筑装饰工程有限公司 | One kind can clot heavy metal free bamboo and woods fiber integrated wall plate and preparation method thereof |
| CN109354708A (en) * | 2018-09-19 | 2019-02-19 | 芜湖海螺型材科技股份有限公司 | A kind of PVC co-extrusion building template and preparation method thereof |
| CN113698670A (en) * | 2021-10-09 | 2021-11-26 | 青岛佳百特新材料科技有限公司 | Calcium-zinc stabilizer and application thereof in SPC floor base material production |
| CN113881165A (en) * | 2021-11-03 | 2022-01-04 | 上海模新新材料科技有限公司 | New formula for improving Vicat softening temperature of PVC building template |
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