CN113201191B - Transparent PVC composition and preparation method and application thereof - Google Patents
Transparent PVC composition and preparation method and application thereof Download PDFInfo
- Publication number
- CN113201191B CN113201191B CN202110410590.5A CN202110410590A CN113201191B CN 113201191 B CN113201191 B CN 113201191B CN 202110410590 A CN202110410590 A CN 202110410590A CN 113201191 B CN113201191 B CN 113201191B
- Authority
- CN
- China
- Prior art keywords
- transparent pvc
- pvc composition
- composition according
- conical screw
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/507—Screws characterised by the material or their manufacturing process
- B29C48/509—Materials, coating or lining therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
- B29C48/525—Conical screws
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a transparent PVC composition, a preparation method and an application thereof, wherein the composition comprises the following components in parts by weight: 80-100 parts of polyvinyl chloride resin; 0.5-1.0 part of lubricant; 1-2 parts of dioctyl phthalate; 1-2 parts of MBS toughening agent; 0.1-0.8 part of ABS resin; 3-4 parts of organic tin stabilizer; 0.01 to 0.03 portion of weather resistant agent; the transparent PVC composition is processed by a conical screw, and the screw compression ratio of the conical screw is 1: (1.1-1.2). The PVC composition has better light transmittance, mechanical property and brittleness.
Description
Technical Field
The invention relates to the technical field of modified PVC materials, and particularly relates to a transparent PVC composition, and a preparation method and application thereof.
Background
Polyvinyl chloride (PVC) is a general plastic with large yield, wide application and excellent comprehensive performance, and the hard PVC pipeline is widely applied to the fields of drainage, cable sheath and the like due to high cost performance. In a building house, the drainage pipeline is frequently blocked by wastes, so that the visual drainage pipeline is convenient to overhaul and is required by the public; in the house decoration process, how to ensure the safety and reliability of cables hidden in walls and panels is one of the most important concerns of owners.
Generally, dioctyl phthalate (DOP), dibutyl phthalate (DBP) and para-phenyl DOTP are added into a transparent PVC material to improve the demolding capacity of a PVC resin in a processing process and the smoothness of the resin in a molding process, but after the DOP, the DBP, plant modified oil or white oil is added, the brittleness of the PVC resin is increased, and in order to reduce the brittleness, an MBS toughening agent is generally added into a system, for example, chinese patent (CN 112226020 a) discloses a cold-resistant transparent plastic particle and a preparation method thereof, wherein para-phenyl DOTP is adopted to reduce friction between the resin and processing equipment and improve the demolding effect, but the addition of para-phenyl DOTP increases the brittleness of the PVC resin, and the MBS toughening agent is generally added into the system in the prior art, but the addition of the MBS toughening agent causes the increase of the flexibility of a PVC pipe, and the compressive strength of the PVC pipe is reduced.
On the other hand, in the preparation of transparent PVC pipes, PVC resin is easy to decompose in the processing process to cause the PVC resin to turn yellow, and at present, in order to solve the problem, a whitening agent or a decolorizer is generally added in the prior art to ensure the transparency, but the performance of the PVC resin is greatly reduced because the PVC resin is decomposed.
Therefore, it is necessary to develop a PVC material having good mechanical properties and transparency.
Disclosure of Invention
The invention provides a transparent PVC composition for overcoming the defect that the mechanical property and the transparency of the transparent PVC material cannot be simultaneously met.
Another object of the present invention is to provide a method for preparing the transparent PVC composition.
Another object of the present invention is to provide the use of said transparent PVC composition.
In order to realize the purpose, the invention adopts the technical scheme that:
a transparent PVC composition comprises the following components in parts by weight:
the transparent PVC composition is processed by a conical screw, and the screw compression ratio of the conical screw is 1: (1.1-1.2).
The invention adopts dioctyl phthalate, MBS flexibilizer, ABS resin and lubricant to improve the demoulding effect and mechanical property. The dioctyl phthalate and the lubricant reduce the friction force between the PVC resin and processing equipment, improve the demolding effect and increase the smoothness of the product; the MBS toughening agent is added to prevent the brittleness of the resin from increasing due to the addition of dioctyl phthalate, the small amount of ABS resin is added to prevent the rigidity of the resin from decreasing due to the addition of the MBS toughening agent, the compression resistance and the heat resistance of the PVC resin are improved, the content of the ABS resin is not more than 0.8 part, and the resin fusion is poor and the drop hammer impact is reduced due to the excessively high content.
On the other hand, the inventors have creatively found that by adjusting the screw compression ratio of the conical screw to 1: (1.1-1.2) can reduce the plasticizing strength, prevent the PVC resin from reducing transparency due to overheating decomposition and yellowing, and also prevent the mechanical property of the PVC resin from reducing due to overheating decomposition. This is because the screw compression ratio of the existing conical screw is more than 1.3, the plasticization is too strong, and dioctyl phthalate and PVC resin are easily decomposed due to overheating, which leads to the reduction of mechanical properties.
The screw compression ratio refers to the ratio of the volume of each screw groove in the screw feeding section to the volume of each screw groove in the metering section.
Preferably, the conical screw is subjected to an electroplating treatment.
The inventor finds that the stripping capability of the PVC resin can be improved by subjecting the conical screw to electroplating treatment.
Preferably, the extrusion die of the conical screw is subjected to an electroplating treatment.
After the extrusion die of the conical screw is subjected to electroplating treatment, the surface is smooth, resin is not adhered to a film, and the demolding effect is further improved.
The electroplating treatment refers to plating a layer of metal chromium film on the surfaces of the conical screw and the extrusion die.
Preferably, the MBS toughening agent is a methyl methacrylate-butadiene-styrene terpolymer.
Preferably, the polyvinyl chloride resin has a weight average molecular weight of 6 to 8 ten thousand.
Preferably, the organotin stabilizer is one of lauric acid esters, maleic acid esters or mercaptans.
Preferably, the weather resisting agent is one or more of rutile titanium dioxide, an ultraviolet absorbent or an antioxidant.
The preparation method of the transparent PVC composition comprises the following steps:
s1, weighing polyvinyl chloride resin, a lubricant, dioctyl phthalate, an MBS (methyl methacrylate-butadiene-styrene) toughening agent, an organotin stabilizing agent, a weather resisting agent and an antioxidant in proportion, and blending uniformly to obtain a premix;
and S2, extruding and molding the premix obtained in the step S1 to obtain the PVC composition.
Preferably, the extrusion processing temperature in step S2 is 160 to 180 ℃.
A transparent PVC pipe comprising the transparent PVC composition.
The PVC pipe prepared from the transparent PVC composition has good mechanical properties and is not easy to become brittle.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a transparent PVC composition, which adopts dioctyl phthalate, MBS toughening agent, ABS resin and lubricant to improve the demolding effect and mechanical property. The inventor creatively finds that the screw compression ratio of the conical screw is adjusted to be 1: (1.1-1.2) can overcome the defects of mechanical property reduction and PVC color yellowing caused by the decomposition of PVC resin, so that the PVC composition has high transparency and good mechanical property.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, but the embodiments of the present invention are not limited thereto.
The reagents, methods and equipment adopted by the invention are conventional in the technical field if no special description is given.
The following examples and comparative examples employ the following starting materials:
polyvinyl chloride resin: s800, zhongtai;
lubricant: grease wax, german Hangao G70S
Dioctyl phthalate: purchased from the national drug group;
MBS flexibilizer: b625, brillouin, japan;
ABS resin: PA-758, taiwan Chimei;
organic tin stabilizer: 181, yunnan tin industry;
weather resisting agent: antioxidant 168, dongguan treasure Xu chemical industry;
examples and comparative examples transparent PVC compositions were prepared by a process comprising the steps of:
s1, weighing polyvinyl chloride resin, a lubricant, dioctyl phthalate, an MBS (methyl methacrylate-butadiene-styrene) toughening agent, ABS (acrylonitrile-butadiene-styrene) resin, an organic tin stabilizer, a weather resisting agent and an antioxidant in proportion, and blending uniformly to obtain a premix;
and S2, extruding and molding the premix obtained in the step S1 to obtain the PVC composition.
Examples 1 to 8
The examples provide a series of transparent PVC compositions, the specific formulations are shown in table 1;
TABLE 1 formulations (parts) of examples 1 to 8
Comparative examples 1 to 3
Comparative examples a series of PVC compositions are provided, the specific formulations are given in table 3;
TABLE 3 formulations (parts) of comparative examples 1 to 4
The PVC compositions prepared in the above examples and comparative examples all passed the following performance tests:
and (3) impact resistance: referring to GB/T5836.1-2019, a drop hammer tester is adopted, hammers DN90,1kg,2m,23 +/-2 ℃ are adopted, the length of a sample is 200mm, and 10 groups of samples are taken for an impact test;
and (3) detecting the transparency: the test is carried out by referring to determination of light transmittance and haze of transparent plastic (GB/T2410-2008), and the light transmittance in a range of 0-100% is used for representing;
surface roughness: refer to JJF 1105-2018 contact pin type surface roughness measuring instrument calibration standard. The surface roughness is less than or equal to 0.6, and the surface is smooth.
Vicat softening point: determined according to the provisions of GB/T8802-2001.
TABLE 4 data for examples and comparative examples
From comparative examples 1 to 3, if the screw compression ratio of the conical screw is not 1: (1.1-1.2), the PVC material with good mechanical property and transmittance can not be obtained, if ABS resin is not added, the drop hammer impact is unqualified, and the Vicat softening point does not reach the standard. From comparative example 4, when the content of the ABS resin exceeds 0.8 parts, the drop weight impact is reduced and the surface roughness is increased.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A transparent PVC composition is characterized by comprising the following components in parts by weight:
the transparent PVC composition is processed by a conical screw, and the screw compression ratio of the conical screw is 1: (1.1-1.2).
2. The transparent PVC composition according to claim 1, wherein the conical screw is subjected to an electroplating treatment.
3. The transparent PVC composition according to claim 1, wherein the extrusion die of the conical screw is subjected to a plating treatment.
4. The transparent PVC composition according to claim 1, wherein the polyvinyl chloride resin has a weight average molecular weight of 6 to 8 ten thousand.
5. The transparent PVC composition according to claim 1, wherein the organotin stabilizer is one of lauric acid esters, maleic acid esters or mercaptans.
6. The transparent PVC composition of claim 1, wherein the weathering agent is an ultraviolet absorber.
7. Process for the preparation of a transparent PVC composition according to any one of claims 1 to 6, characterized in that it comprises the following steps:
s1, weighing polyvinyl chloride resin, a lubricant, dioctyl phthalate, an MBS (methyl methacrylate-butadiene-styrene) toughening agent, an organotin stabilizing agent, ABS (acrylonitrile butadiene styrene) resin and a weather resisting agent in proportion, and blending uniformly to obtain a premix;
s2, extruding and molding the premix obtained in the step S1 to obtain the PVC composition.
8. The method for preparing a transparent PVC composition according to claim 7, wherein the extrusion processing temperature in the step S2 is 160 to 180 ℃.
9. A transparent PVC pipe, characterized in that it is made of the transparent PVC composition according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410590.5A CN113201191B (en) | 2021-04-13 | 2021-04-13 | Transparent PVC composition and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410590.5A CN113201191B (en) | 2021-04-13 | 2021-04-13 | Transparent PVC composition and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113201191A CN113201191A (en) | 2021-08-03 |
| CN113201191B true CN113201191B (en) | 2022-12-02 |
Family
ID=77027233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410590.5A Active CN113201191B (en) | 2021-04-13 | 2021-04-13 | Transparent PVC composition and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113201191B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567669A (en) * | 1967-08-04 | 1971-03-02 | Diamond Shamrock Corp | Preparation of rigid polyvinyl chloride particles having a high bulk density |
| CN1098307C (en) * | 2000-10-26 | 2003-01-08 | 招远市海星塑料厂 | Modified UPVC plastic pipe and its preparing process |
| WO2006035863A1 (en) * | 2004-09-30 | 2006-04-06 | Kaneka Corporation | Polyvinyl chloride fiber and process for production thereof |
| CN101671464A (en) * | 2009-10-13 | 2010-03-17 | 广东联塑科技实业有限公司 | Polyvinyl chloride transparent compound and tubular product thereof |
| CN101693778B (en) * | 2009-10-13 | 2012-02-08 | 广东联塑科技实业有限公司 | PVC/ABS blend and pipe thereof |
| CN101696308A (en) * | 2009-10-27 | 2010-04-21 | 广东联塑科技实业有限公司 | Polyvinyl chloride composition and transparent pipe thereof |
| CN101967938B (en) * | 2010-09-20 | 2012-07-04 | 浙江中财型材有限责任公司 | Micro-foaming co-extrusion profiled bar and preparation method thereof |
| CN107141699A (en) * | 2017-05-26 | 2017-09-08 | 褚建芬 | One kind is used for 3D printing ABS composite material and preparation method thereof |
| CN107141646B (en) * | 2017-05-27 | 2019-05-24 | 无锡嘉弘塑料科技有限公司 | A kind of medical injection molding instrument special PVC pellet of ultra-high transparency hard |
| CN107474430A (en) * | 2017-08-16 | 2017-12-15 | 山东霞光实业有限公司 | A kind of PVC Modified wood plastic section bars of door and window and preparation method thereof |
| CN109438874A (en) * | 2018-10-25 | 2019-03-08 | 宜宾天原集团股份有限公司 | A kind of high-strength and high ductility polyvinyl chloride injection moulding composition and preparation method thereof |
| CN112226020B (en) * | 2020-10-24 | 2022-07-15 | 杭州富阳龙翔塑料制品有限公司 | Cold-resistant transparent plastic particle and preparation method thereof |
-
2021
- 2021-04-13 CN CN202110410590.5A patent/CN113201191B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113201191A (en) | 2021-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112375363B (en) | Glass fiber reinforced polycarbonate composition and preparation method and application thereof | |
| CN105175947B (en) | A kind of heat-resisting smoke-inhibiting PVC material and preparation method thereof | |
| CN105566839B (en) | A kind of high-performance anti-aging ABS/GF composite materials and preparation method thereof | |
| KR102134168B1 (en) | Heavy metal free cpvc compositions | |
| CN104109323A (en) | Migration-resistant environment-friendly PVC (Polyvinyl Chloride) modified material and preparation method thereof | |
| CN112143135B (en) | Scratch-resistant PVC (polyvinyl chloride) film and preparation method thereof | |
| CN102051007B (en) | Soft polrvinyl chloride composition and preparation method thereof | |
| CN108003444B (en) | Low-smoke halogen-free flame-retardant polyolefin cable material and preparation method thereof | |
| CN111073174B (en) | Odorless antistatic PVC composite material and preparation method thereof | |
| CN113201191B (en) | Transparent PVC composition and preparation method and application thereof | |
| KR102072433B1 (en) | Thermoplastic resin composition | |
| CN112457645B (en) | Polycarbonate alloy composition and preparation method and application thereof | |
| CN112226018A (en) | High-performance PVC (polyvinyl chloride) plastic pipe and preparation method thereof | |
| KR20130090734A (en) | Graft copolymer having excellent transparency and impact strength | |
| CN107974018B (en) | Special material for high-weather-resistance PMMA (polymethyl methacrylate) film and preparation method and application thereof | |
| CN109294107B (en) | Transparent and visible polyvinyl chloride electrical casing | |
| CN114276639B (en) | Weather-resistant high-temperature-resistant high-humidity-resistant ABS (acrylonitrile butadiene styrene) composition and preparation method thereof | |
| CN110066476A (en) | Fire-retardant anti-impact type height flowing alloy material and preparation method thereof | |
| CN109517297B (en) | Polyvinyl chloride profile composite material, self-cleaning polyvinyl chloride door and window profile and preparation method thereof | |
| CN109467907B (en) | PC/PMMA/PBT composite material and preparation method thereof | |
| CN108976650B (en) | Environment-friendly weather-resistant high-light-transmission PVC pipeline | |
| CN109824806A (en) | A kind of production method and gained resin of polyvinyl chloride resin | |
| CN111440398A (en) | Special material for ion-crosslinked polyvinyl chloride protection tube | |
| JP2009097175A (en) | Rain gutter | |
| CN114806047B (en) | Compression-resistant high-temperature-resistant CPVC pipe fitting and forming process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |