CN109825173A - A kind of powdery paints and its preparation method and application with super-weathering resistance - Google Patents
A kind of powdery paints and its preparation method and application with super-weathering resistance Download PDFInfo
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- CN109825173A CN109825173A CN201910135732.4A CN201910135732A CN109825173A CN 109825173 A CN109825173 A CN 109825173A CN 201910135732 A CN201910135732 A CN 201910135732A CN 109825173 A CN109825173 A CN 109825173A
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- polyester resin
- powder
- powdery paints
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- weathering resistance
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Abstract
The present invention relates to powder coating technology field more particularly to a kind of powdery paints and its preparation method and application with super-weathering resistance.It is that base-material makes polyester resin including M-phthalic acid PIA substitution terephthalic acid (TPA) BEPD, the ester bond of M-phthalic acid is more hidden to be not easy to be hydrolyzed, water resistance is stronger, and sebacic acid dioctyl ester plasticizer and antioxidant are added in the feed, to keep powder weatherability obtained more excellent；Using semi-crystalline polyester resin and polyester resin NH3307 hybrid resin as powdery paints made of base-material, hardness, flow leveling and in terms of than more prominent；The addition of wax powder and nylon powder can increase the wearability of coating.
Description
Technical field
The present invention relates to powder coating technology field more particularly to a kind of powdery paints and its preparation with super-weathering resistance
Methods and applications.
Background technique
The continuous expansion of powdery paints application field has pushed various functional powder coating to put goods on the market one after another.Country is right
The control of VOC promotes paint and makes the transition to powdery paints, automobile, engineering machinery, and means of transportation etc. are abundant more in addition to requiring
Color color, also requires surface covering to have high weatherability, the product of applying coating is under rain drop erosion, high temperature or wet environment
The phenomenon that being easy to appear loss of gloss, blistering, colour fading, adhesive force variation or even coating shedding, coating loses the protective effect to ground,
Affect beauty.
Summary of the invention
The technical problems to be solved by the invention are provided a kind of with super resistance to for above-mentioned technical deficiency
The powdery paints and its preparation method and application of time property uses M-phthalic acid PIA substitution terephthalic acid (TPA) BEPD for base-material system
Make polyester resin, the ester bond of M-phthalic acid is more hidden to be not easy to be hydrolyzed, and water resistance is stronger, and certain herbaceous plants with big flowers is added in the feed
Adipate plasticizer and antioxidant, to keep powder weatherability obtained more excellent；With semi-crystalline polyester resin and polyester tree
Rouge NH3307 hybrid resin be base-material made of powdery paints, hardness, flow leveling and in terms of than more prominent；Wax powder
The wearability of coating can be increased with the addition of nylon powder.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: the coating constituent component and its weight hundred
Divide and is respectively as follows: composite polyester resin 68%, barium sulfate 12%, wax powder 3%, nylon powder 5% than range；Curing agent TGIC6.3%, stream
Flat agent 3%, styrax 1.2% and optical brightener 1.5%.
A kind of powdery paints making step with super-weathering resistance are as follows:
(1) composite polyester resin is added in mixing kettle, then be added barium sulfate, wax powder, nylon powder, curing agent, levelling agent,
Styrax and optical brightener raw material, high-speed stirred are uniform；
(2) melting mixing is carried out by double screw extruder, squeeze out 1mm or so thin slice, thin slice is crushed, crossed 200 mesh screens and obtain
Coating powder；
With high-pressure electrostatic spray gun by powder spray on the steel plate, film thickness be 50-70 μm；
(4) the template sprayed is put in 200 DEG C of baking ovens, solidifies 10min, obtain coating template.
The technical program is advanced optimized, the composite polyester resin is by semi-crystalline polyester resin and polyester resin
NH3307 is mixed with 3: 1 weight ratios, and sebacic acid dioctyl ester plasticizer is added and antioxidant is made；Semi-crystalline polyester resin and polyester
The acid value of resin NH3307 is each about 33mgKOH/g.
The technical program is advanced optimized, the semi-crystalline polyester resin and polyester resin are by filler M-phthalic acid
PIA substitution terephthalic acid (TPA) BEPD is made.
Advanced optimize the technical program, the crystallinity of the semi-crystalline polyester resin is 38.5%, and hypocrystalline is vertical
Number-average molecular weight is 3435, molecular distribution 1.434, and glass transition temperature is 54.5 DEG C.
Compared with prior art, the invention has the following advantages that 1, M-phthalic acid PIA substitution terephthalic acid (TPA) BEPD is
Base-material makes polyester resin, and the ester bond of M-phthalic acid is more hidden to be not easy to be hydrolyzed, and water resistance is stronger；2 and in raw material
Middle addition sebacic acid dioctyl ester plasticizer and antioxidant, to keep powder weatherability obtained more excellent；3, with semicrystalline polyester tree
Rouge and polyester resin NH3307 hybrid resin are powdery paints made of base-material, hardness, flow leveling and in terms of compare
It is more prominent；4, the addition of wax powder and nylon powder can increase the wearability of coating.
Detailed description of the invention
Fig. 1 is that a kind of coating of powdery paints with super-weathering resistance and its preparation method and application and film can newly compare
Table.
Fig. 2 is a kind of coating resin performance indicator of powdery paints with super-weathering resistance and its preparation method and application.
Fig. 3 is the complex polyester of the present invention and city of a kind of powdery paints with super-weathering resistance and its preparation method and application
Field polyester minute temperature deformation curve graph.
Fig. 4 is a kind of film forming procedure Gel-coating film spraying of powdery paints with super-weathering resistance and its preparation method and application
It can variation diagram.
Fig. 5 is that a kind of acidolysis agent of powdery paints with super-weathering resistance and its preparation method and application applies polyester powder
Expect the influence diagram of light-protection rate.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
Embodiment
Semi-crystalline polyester resin and amorphous polyester resin NH3307 are weighed with 3: 1 weight ratios and are put into stirred tank, is then existed
Suitable sebacic acid dioctyl ester plasticizer and antioxidant are put into inside stirred tank, starting blender is stirred for uniformly being made multiple
Close polyester resin；The semi-crystalline polyester resin and polyester resin are by filler M-phthalic acid PIA substitution terephthalic acid (TPA)
BEPD is made；The acid value of semi-crystalline polyester resin and polyester resin NH3307 are each about 33mgKOH/g；Semi-crystalline polyester resin knot
Brilliant degree is 38.5%, and the vertical number-average molecular weight of hypocrystalline is 3435, molecular distribution 1.434, and glass transition temperature is 54.5 DEG C.
A kind of powdery paints making step with super-weathering resistance are as follows:
(1) composite polyester resin is added in mixing kettle, then be added barium sulfate, wax powder, nylon powder, curing agent, levelling agent,
Styrax and optical brightener raw material, high-speed stirred are uniform；
(2) melting mixing is carried out by double screw extruder, squeeze out 1mm or so thin slice, thin slice is crushed, crossed 200 mesh screens and obtain
Coating powder；
With high-pressure electrostatic spray gun by powder spray on the steel plate, film thickness be 50-70 μm；
(4) the template sprayed is put in 200 DEG C of baking ovens, solidifies 10min, obtain coating template.
Its coating template is tested and analyzed, as a result as shown in Figs 1-4；It is substituted using M-phthalic acid PIA to benzene two
Formic acid BEPD is that base-material makes polyester resin, and the ester bond of M-phthalic acid is more hidden to be not easy to be hydrolyzed, and water resistance is stronger, and
And sebacic acid dioctyl ester plasticizer and antioxidant are added in the feed, to keep powder weatherability obtained more excellent；With hypocrystalline
Polyester resin and polyester resin NH3307 hybrid resin are powdery paints made of base-material, in hardness, flow leveling and storage etc.
Aspect is than more prominent；The addition of wax powder and nylon powder can increase the wearability of coating.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (4)
1. a kind of powdery paints and its preparation method and application with super-weathering resistance, it is characterised in that the coating constituent component and
Its weight percentage ranges is respectively as follows: composite polyester resin 68%, barium sulfate 12%, wax powder 3%, nylon powder 5%；Curing agent
TGIC6.3%, levelling agent 3%, styrax 1.2% and optical brightener 1.5%；
A kind of powdery paints making step with super-weathering resistance are as follows:
(1) composite polyester resin is added in mixing kettle, then be added barium sulfate, wax powder, nylon powder, curing agent, levelling agent,
Styrax and optical brightener raw material, high-speed stirred are uniform；
(2) melting mixing is carried out by double screw extruder, squeezes out 1mm or so thin slice, thin slice is crushed, crossed 200 mesh screens and obtain
To coating powder；
(3) with high-pressure electrostatic spray gun by powder spray on the steel plate, film thickness be 50-70 μm；
(4) template sprayed is put in 200 DEG C of baking ovens, solidifies 10min, obtains coating template.
2. a kind of powdery paints and its preparation method and application with super-weathering resistance according to claim 1, feature
Be: composite polyester resin is mixed by semi-crystalline polyester resin and polyester resin NH3307 with 3: 1 weight ratios, and sebacic acid two is added
Monooctyl ester plasticizer and antioxidant are made；The acid value of semi-crystalline polyester resin and polyester resin NH3307 are each about 33mgKOH/g.
3. a kind of powdery paints and its preparation method and application with super-weathering resistance according to claim 1, feature
Be: semi-crystalline polyester resin and polyester resin are made of filler M-phthalic acid PIA substitution terephthalic acid (TPA) BEPD.
4. a kind of powdery paints and its preparation method and application with super-weathering resistance according to claim 1, feature
Be: the crystallinity of semi-crystalline polyester resin is 38.5%, and the vertical number-average molecular weight of hypocrystalline is 3435, and molecular distribution is
1.434, glass transition temperature is 54.5 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135732.4A CN109825173A (en) | 2019-02-25 | 2019-02-25 | A kind of powdery paints and its preparation method and application with super-weathering resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135732.4A CN109825173A (en) | 2019-02-25 | 2019-02-25 | A kind of powdery paints and its preparation method and application with super-weathering resistance |
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| Publication Number | Publication Date |
|---|---|
| CN109825173A true CN109825173A (en) | 2019-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910135732.4A Pending CN109825173A (en) | 2019-02-25 | 2019-02-25 | A kind of powdery paints and its preparation method and application with super-weathering resistance |
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| CN (1) | CN109825173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106304A (en) * | 2021-12-23 | 2022-03-01 | 安徽神剑新材料股份有限公司 | Low-temperature curing weather-resistant polyester resin, low-temperature curing weather-resistant powder coating and preparation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752766A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of decoration bar section wood grain powdery paints and manufacture method |
-
2019
- 2019-02-25 CN CN201910135732.4A patent/CN109825173A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752766A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of decoration bar section wood grain powdery paints and manufacture method |
Non-Patent Citations (1)
| Title |
|---|
| 李勇: "TGIC粉末涂料用半结晶聚酯树脂的合成与性能", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106304A (en) * | 2021-12-23 | 2022-03-01 | 安徽神剑新材料股份有限公司 | Low-temperature curing weather-resistant polyester resin, low-temperature curing weather-resistant powder coating and preparation method |
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Application publication date: 20190531 |