Coating material for electrostatic spraying on polypropylene automobile bumper bar
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A polypropylene material, electrostatic spraying technology, used in polyester coatings, polyurea/polyurethane coatings, epoxy resin coatings, etc., can solve the problems of easy spattering, poor weather resistance, and can not meet the requirements of robotic electrostatic spraying, and achieves adaptation to Good performance and good paint film effect
Inactive Publication Date: 2017-09-22
CHENZHOU TEIKYO CHEM TECH
View PDF3 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] However, the coatings in the prior art cannot meet the requirements that the bumper paint surface must have good weather resistance, durability, flexibility, impact resistance, sun resistance, water washing resistance and decorative properties at the same time.
For example, some water resistance is not good, after 120 hours of manual washing with 5% washing solvent, the gloss and color of the coating film will be significantly reduced; some weather resistance is poor, after 2000 hours of artificial accelerated aging, or after professional drying field testing, the gloss will be lost High rate, serious fading, or unqualified water resistance, heat and humidity resistance, poor gasoline resistance, chemical resistance; Decorative parts do not match the main body; some have poor flexibility, are prone to bending and cracking at low temperatures, and are prone to splashing when stones collide; etc.
In particular, most of the existing coatings cannot meet the requirements of electrostatic spraying of robot wires
The main reason is that the paint has poor adaptability to the equipment in robot spraying, so it is easy to cause equipment failure or poor paint film effect after spraying, which cannot meet the requirements of electrostatic spraying by robots on the assembly line of automobile factories, so it cannot meet the needs of modern automobile production
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0032] The coating is made of the following components by weight: polyurethane resin ester 10, polyester resin 15, modified functional resin 20, ethyl acetate 5, butyl acetate 5, auxiliary agent 1, acrylic resin 8, resistance regulator 1, Color paste 35.
[0033] Preparation method steps:
[0034] (1) Synthesis of modified functional resin: Stir 30 parts of modified epoxy resin, 25 parts of modified amino resin, 35 parts of cellulose acetate butyrate solution, 8 parts of trimethylbenzene, and 2 parts of dispersant to obtain modified Functional resin, spare;
[0035] (2) Preparation of color paste: Weigh each raw material according to the following weight ratio: 60 parts of titanium dioxide, 10 parts of pigment, 5 parts of dispersant, 5 parts of wetting agent, 10 parts of silicon dioxide, 10 parts of trimethylbenzene, 400rpm After stirring evenly, stir again at 1600rpm for 5 minutes to obtain the pre-squeezing of the pigment; transfer the pre-smelting of the pigment to a sand...
Embodiment 2
[0041] The paint is made of the following components by weight: polyurethane resin ester 8, polyester resin 20, modified functional resin 28, ethyl acetate 10, butyl acetate 10, auxiliary agent 2, acrylic resin 5, resistance regulator 0.5, Color paste 30.
[0042] Preparation method steps:
[0043] (1) Synthesis of modified functional resin: Stir 25 parts of modified epoxy resin, 30 parts of modified amino resin, 40 parts of cellulose acetate butyrate solution, 14 parts of trimethylbenzene, and 1 part of dispersant to obtain modified Functional resin, spare;
[0044](2) Preparation of color paste: Weigh each raw material according to the following weight ratio: 50 parts of titanium dioxide, 15 parts of pigment, 8 parts of dispersant, 4 parts of wetting agent, 15 parts of silicon dioxide, 15 parts of trimethylbenzene, 800rpm After stirring evenly, stir again at 800rpm for 30 minutes to obtain the pre-squeezing of the pigment; transfer the pre-smelting of the pigment to a sand...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a coating material for electrostatic spraying on a polypropylene automobile bumper bar. The coating material is prepared from 8-15 parts by weight of polyurethane resin ester, 10-20 parts by weight of polyester resin, 18-28 parts by weight of modified functional resin, 5-10 parts by weight of ethyl acetate, 5-10 parts by weight of butyl acetate, 0.5-2 parts by weight of an auxiliary agent, 5-10 parts by weight of acrylic resin, 0.5-2 parts by weight of a resistance regulator and 30-40 parts by weight of colorant paste. The preparation method comprises the following steps: a. adding the polyurethane resin ester, the polyester resin, the modified functional resin, the ethyl acetate, the butyl acetate, the auxiliary agent, the acrylic resin and the resistance adjusting agent into a blending kettle and carrying out uniform stirring, b. according to the color of the automobile coating, adding 80-95% of the corresponding colorant paste into the above mixture, carrying out stirring, detecting the color of the coating film, and according to color difference, continuously adding different colorant paste to adjust the color so that the coating film color satisfies the standard, and c. carrying out detection, and when the coating film is qualified, carrying out filtration and packaging.
Description
technical field [0001] The invention relates to a paint for automobile bumpers, in particular to a paint for electrostatically spraying polypropylene material car bumpers, and also to a method for preparing the paint. Background technique [0002] Automobile bumper is an important safety part of the automobile. It is responsible for absorbing and mitigating external impacts to protect the safety of the body and the person. It must have strong flexibility. At present, most automobile bumpers are made of polypropylene material, and then the paint is sprayed by robotic wire body electrostatic spraying method. The utilization rate of robot electrostatic spraying paint is more than 30% higher than that of traditional air spraying, and the paint utilization rate reaches more than 80%, which reduces energy consumption, and the electrostatic spraying efficiency of robot lines is high, which can meet the requirements of high-efficiency production capacity. Large-scale automobile manu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more