CN101418180B - Powder coating and preparation method thereof - Google Patents
Powder coating and preparation method thereof Download PDFInfo
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- CN101418180B CN101418180B CN2008102186584A CN200810218658A CN101418180B CN 101418180 B CN101418180 B CN 101418180B CN 2008102186584 A CN2008102186584 A CN 2008102186584A CN 200810218658 A CN200810218658 A CN 200810218658A CN 101418180 B CN101418180 B CN 101418180B
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Abstract
The invention relates to a powder paint and a preparation method thereof. The powder paint is characterized in that the powder paint takes 55 to 80 portions of polyethylene and 20 to 45 portions of filler as base materials; and the base materisals are added with 5 to 30 percent of vinyl trialkyl silane, 1.0 to 4.0 percent of evocating agent, 0.5 to 1.5 percent of catalyst, 1.0 to 5.0 percent of chemical inhibitor and 0.5 to 2.0 percent of flatting agent. The preparation method comprises the following steps: the polyethylene, vinyl trialkyl silane, the evocating agent, the catalyst and the chemical inhibitor are placed into a double screw extruder according to the proportion for melt grafting reaction, extruded and granulated to obtain grafting master batch, the temperature is controlled to between 165 and 170 DEG C, and the silane percent grafting of the crosslinked polyethylene is between 5 and 30 percent; 55 to 80 portions of the obtained silane grafted polyethylene resin and 20 to 45 portions of filler are taken as base materials, added with 0.5 to 2 percent of flatting agent and 0.1 to 0.5 percent of curing accelerator, and subjected to melt mixing, extrusion and granulation in the double screw extruder under the processing condition; products are crushed by a plastic crusher into micropowder which is screened; and components with 180 to 200 meshes are taken to obtain the product. The powder paint has the advantages of outstanding wearing resistance, good permeation resistant performance, chemical-resistant performance, stress cracking resistance, good low-temperature flexibility, good heat resistance and so on.
Description
Technical field
The present invention relates to the field of a kind of powder coating and manufacture method thereof, more specifically say to relate to a kind of electrostatic powder dedicated coating and production technique thereof.
Background technology
Polyethylene powder coating has the general character of linear polymer, be subjected to can be changed into the viscosity flow state behind the high temperature, recover the characteristic of original resin after the cooling again, have good flexible resistance, impact, electrical insulating property and resistance to chemical corrosion simultaneously, thick coating, price is low, is widely used in that daily living article, traffic guardrail, chemical industry equipment are anticorrosion, the application of auto parts machinery etc.; In recent years along with Chinese economic development, growth in the living standard, its demand grows with each passing day, but the polythene thermoplastic powder coating belongs to non-polar material, and the bonding force of coating and metal base is relatively poor, has limited its application development.
Summary of the invention
The purpose of this invention is to provide a kind of extremely strong antiseptic power that has, powder coating and manufacture method thereof that its coating can be strong with the metal base bonding force.
In order to achieve the above object, powder coating of the present invention is characterised in that: it comprises that polyethylene 55-80 part and filler are base-material for 20～45 parts, add vinyl trialkyl silane 5-30%, initiator 1.0-4.0%, catalyzer 0.5-1.5%, oxidation inhibitor 1.0-5.0%, flow agent 0.5～2.0%.
Described polyethylene is new LDPE (film grade), linear low density polyethylene or medium-density polyethylene.
Described vinyl trialkyl silane is vinyl triethyl silicane or vinyl trimethylsilane.
Described initiator is peroxide initiator such as dicumyl peroxide, t-butyl hydrogen peroxide, isopropyl benzene hydroperoxide and di-tert-butyl peroxide or their combination.
Described catalyzer is dibutyl organotin oxides or monobutyltin oxide such as dibutyl tin laurate, Dibutyltin oxide or their combination.
The manufacture method of powder coating of the present invention is, it is characterized in that: get polyethylene, vinyl trialkyl silane, initiator, catalyzer and oxidation inhibitor and place twin screw extruder to carry out melting graft reaction by proportioning, extruding also, granulation gets the grafting masterbatch, its temperature is controlled at 165 ℃-170 ℃, and the silane percentage of grafting of crosslinked polyethylene is 5～30%;
Get gained silane grafted polyethylene resin 55-80 part and filler and be base-material for 20～45 parts, add flow agent 0.5～2%, curing catalyst 0.1-0.5% under above-mentioned processing conditions in twin screw extruder melting mixing, extrude and granulation, product is ground into micro mist by plastic crusher and sieves, and gets 180-200 purpose component and promptly gets this product.
Described curing catalyst is a dibutyl tin laurate.
The present invention's advantage compared with prior art is, because siloxanes carries out the silanization graft modification to polyethylene, poly good weatherability, chemical resistance advantages of higher have been kept on the one hand, has outstanding wear resistance, the anti-cracking of proof stress, low-temperature flexibility reach excellent heat resistance well, its softening temperature can reach 200 ℃, can be at 140 ℃ of following life-time service.Simultaneously the siloxane groups of introducing on the molecular chain makes thermoplastic molecular resin itself can hydrolytic crosslinking, form tridimensional network, when increasing its corrosion resistance, the adhesion property of itself and ground is greatly improved, goods have preeminent resistance to impact shock, heat-resisting creep property and low-temperature flexibility, good anti-permeability, anti-chemical performance etc.
Specific implementation method
Below in conjunction with embodiment the present invention is done the detailed description of carrying out a step,
Embodiment one
It is a kind of powder coating, comprises that 80 parts of polyethylene and filler are base-material for 30 parts, adds vinyl trialkyl silane 5%, initiator 1.0%, and catalyzer 0.5%, oxidation inhibitor 1.0%, flow agent 0.5%.
This polyethylene is new LDPE (film grade), linear low density polyethylene or medium-density polyethylene; This vinyl trialkyl silane is vinyl triethyl silicane or vinyl trimethylsilane; This initiator is peroxide initiator such as dicumyl peroxide, t-butyl hydrogen peroxide, isopropyl benzene hydroperoxide and di-tert-butyl peroxide or their combination; This catalyzer is dibutyl organotin oxides or monobutyltin oxide such as dibutyl tin laurate, Dibutyltin oxide or their combination; This flow agent is acrylic acid oligomer or silicone resin; Filler is titanium dioxide, talcum powder, lime carbonate, barium sulfate or their combination.
Its manufacture method is, get new LDPE (film grade), vinyl trimethylsilane, oxidation diisopropylbenzene(DIPB), dibutyl tin laurate and antioxidant 1010 and in twin screw extruder, carry out melting graft reaction, extrude and granulation gets grafting masterbatch temperature and is controlled at 165 ℃ approximately.
Getting 60 parts of gained cross-linked polyethylene resins and filler again is that the rutile titanium white powder is base-material for 40 parts, adds flow agent 0.5%, curing catalyst 0.1%; Also can add other auxiliary agent 0.1% and antioxidant 1010s, under above-mentioned processing conditions, melting mixing in twin screw extruder is extruded and granulation; Product is ground into micro mist by plastic crusher and sieves, and gets 180 purpose components and promptly gets this product.This curing catalyst is a dibutyl tin laurate.
During use, above-mentioned gained powder coating is carried out application with electrostatic spraying, toast 20～30min down, then sample is put into about 90 ℃ hot water insulation and soaked certain hour, finish crosslinking reaction in 180～200 degree.The cooling film forming.
Embodiment two
It is a kind of powder coating, comprises that 55 parts of polyethylene and filler are base-material for 45 parts, add vinyl trialkyl silane 15%, initiator 3.0%, catalyzer 1.0%, oxidation inhibitor 3.0%, flow agent 1.5%.
This polyethylene is new LDPE (film grade), linear low density polyethylene or medium-density polyethylene; This vinyl trialkyl silane is vinyl triethyl silicane or vinyl trimethylsilane; This initiator is peroxide initiator such as dicumyl peroxide, t-butyl hydrogen peroxide, isopropyl benzene hydroperoxide and di-tert-butyl peroxide or their combination; This catalyzer is dibutyl organotin oxides or monobutyltin oxide such as dibutyl tin laurate, Dibutyltin oxide or their combination; This flow agent is acrylic acid oligomer or silicone resin; Filler is titanium dioxide, talcum powder, lime carbonate, barium sulfate or their combination.
Its manufacture method is, get new LDPE (film grade), vinyl trimethylsilane, oxidation diisopropylbenzene(DIPB), dibutyl tin laurate and antioxidant 1010 and in twin screw extruder, carry out melting graft reaction, extrude and granulation gets grafting masterbatch temperature and is controlled at 168 ℃ approximately.
Getting 55 parts of gained cross-linked polyethylene resins and filler again is that the rutile titanium white powder is base-material for 45 parts, adds flow agent 1.5%,, curing catalyst 0.3%; Also can add 0.1% part of other auxiliary agent and antioxidant 1010, under above-mentioned processing conditions, melting mixing in twin screw extruder is extruded and granulation; Product is ground into micro mist by plastic crusher and sieves, and gets 190 purpose components and promptly gets this product.This curing catalyst is a dibutyl tin laurate.
During use, above-mentioned gained powder coating is carried out application with electrostatic spraying, toast 20～30min down, then sample is put into about 90 ℃ hot water insulation and soaked certain hour, finish crosslinking reaction in 180～200 degree.The cooling film forming.
Embodiment three
It is a kind of powder coating, comprises that 65 parts of polyethylene and filler are base-material for 35 parts, add vinyl trialkyl silane 30%, initiator 4.0%, catalyzer 1.5%, oxidation inhibitor 5.0%, flow agent 2.0%.
This polyethylene is new LDPE (film grade), linear low density polyethylene or medium-density polyethylene; This vinyl trialkyl silane is vinyl triethyl silicane or vinyl trimethylsilane; This initiator is peroxide initiator such as dicumyl peroxide, t-butyl hydrogen peroxide, isopropyl benzene hydroperoxide and di-tert-butyl peroxide or their combination; This catalyzer is dibutyl organotin oxides or monobutyltin oxide such as dibutyl tin laurate, Dibutyltin oxide or their combination; This flow agent is acrylic acid oligomer or silicone resin; Filler is titanium dioxide, talcum powder, lime carbonate, barium sulfate or their combination.
Its manufacture method is, get new LDPE (film grade), vinyl trimethylsilane, oxidation diisopropylbenzene(DIPB), dibutyl tin laurate and antioxidant 1010 and in twin screw extruder, carry out melting graft reaction, extrude and granulation gets grafting masterbatch temperature and is controlled at 170 ℃ approximately.
Getting 65 parts of gained cross-linked polyethylene resins and filler again is that the rutile titanium white powder is base-material for 35 parts, adds flow agent 2%, curing catalyst 0.5%; Also can add other auxiliary agent 0.1% and antioxidant 1010s, under above-mentioned processing conditions, melting mixing in twin screw extruder is extruded and granulation; Product is ground into micro mist by plastic crusher and sieves, and gets 200 purpose components and promptly gets this product.This curing catalyst is a dibutyl tin laurate.
During use, above-mentioned gained powder coating is carried out application with electrostatic spraying, toast 20～30min down, then sample is put into about 90 ℃ hot water insulation and soaked certain hour, finish crosslinking reaction in 180～200 degree.The cooling film forming.
It is important to point out that only the present invention will be further described for the foregoing description, do not represent limiting the scope of the invention.Some nonessential modifications that other people make according to the present invention and adjustment still belong to protection scope of the present invention.
Claims (6)
1. powder coating is characterised in that: it comprises that polyethylene 55-80 part and filler are base-material for 20～45 parts, add vinyl trialkyl silane 5-30%, initiator 1.0-4.0%, catalyzer 0.5-1.5%, oxidation inhibitor 1.0-5.0%, flow agent 0.5～2.0%.
2. powder coating according to claim 1 is characterized in that: described polyethylene is new LDPE (film grade), linear low density polyethylene or medium-density polyethylene.
3. powder coating according to claim 1 is characterized in that: described vinyl trialkyl silane is vinyl triethyl silicane or vinyl trimethylsilane.
4. powder coating according to claim 1, it is characterized in that: described initiator is a peroxide initiator, and peroxide initiator is dicumyl peroxide or t-butyl hydrogen peroxide or isopropyl benzene hydroperoxide or di-tert-butyl peroxide or their combination.
5. powder coating according to claim 1, it is characterized in that: described catalyzer is dibutyl organotin oxides or monobutyltin oxide, and dibutyl organotin oxides or monobutyltin oxide are dibutyl tin laurate or Dibutyltin oxide or their combination.
6. powder coating according to claim 1 is characterized in that: described flow agent is acrylic acid oligomer or silicone resin; Filler is titanium dioxide, talcum powder, lime carbonate, barium sulfate or their combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102186584A CN101418180B (en) | 2008-10-21 | 2008-10-21 | Powder coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102186584A CN101418180B (en) | 2008-10-21 | 2008-10-21 | Powder coating and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101418180A CN101418180A (en) | 2009-04-29 |
| CN101418180B true CN101418180B (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102186584A Expired - Fee Related CN101418180B (en) | 2008-10-21 | 2008-10-21 | Powder coating and preparation method thereof |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289482B (en) * | 2013-04-23 | 2016-05-11 | 安徽圣德建材科技有限公司 | A kind of polyethylene powder coating and preparation method thereof |
| CN103483931B (en) * | 2013-09-03 | 2016-05-25 | 蚌埠市鸿安精密机械有限公司 | A kind of powdery paints |
| CN103497549A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | High-adhesion polyethylene powder coating |
| EP3034551A1 (en) * | 2014-12-17 | 2016-06-22 | Akzo Nobel Chemicals International B.V. | Powder mixture comprising organic peroxide |
| CN106497243B (en) * | 2016-11-02 | 2019-04-05 | 广州精点高分子材料制品有限公司 | A kind of solid coating and preparation method |
| CN107779004A (en) * | 2017-10-29 | 2018-03-09 | 遵义春华新材料科技有限公司 | A kind of preparation method of Powder Paint for Automobile |
| CN107641359A (en) * | 2017-10-29 | 2018-01-30 | 遵义春华新材料科技有限公司 | A kind of Powder Paint for Automobile |
| CN113444191B (en) * | 2021-06-29 | 2022-11-15 | 成都硅宝科技股份有限公司 | Silane modified polyolefin film forming agent and preparation method and application thereof |
| CN116254031A (en) * | 2023-04-27 | 2023-06-13 | 中国石油大学(北京) | Nano composite powder coating and manufacturing method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422917A (en) * | 2001-12-03 | 2003-06-11 | 广州擎天粉末涂料实业有限公司 | Metallic powder coating |
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- 2008-10-21 CN CN2008102186584A patent/CN101418180B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422917A (en) * | 2001-12-03 | 2003-06-11 | 广州擎天粉末涂料实业有限公司 | Metallic powder coating |
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| CN101418180A (en) | 2009-04-29 |
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Application publication date: 20090429 Assignee: Shanxi Zhongtian New Technology Development Co., Ltd. Assignor: Shunde Vocational-Technical College Contract record no.: 2012990000698 Denomination of invention: High decorative texture antibacterial powdered paint and its manufacturing method Granted publication date: 20110330 License type: Exclusive License Record date: 20120924 |
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