Weatherability fluorocarbon paint and preparation method thereof

A technology of fluorocarbon coatings and weather resistance, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor weather resistance, and achieve the effects of improving wind and sand impact resistance, increasing crosslinking density, and good compatibility

Active Publication Date: 2014-11-19
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of poor weather resistance of the current coating-type backsheet in harsh

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of component A: 55 g (155.81 mmol NCO group) of isophorone diisocyanate (IPDI) trimer Z4470BA (37.5% NCO content, Bayer, Germany) and 20 g of anhydrous xylene (Hangzhou Chemical Reagent Co., Ltd. ) and 25 g of anhydrous butyl acetate (Hangzhou Chemical Reagent Co., Ltd.) were mixed evenly, filtered to make component A, and stored in a dry sealed tank for use. The mass molar concentration of NCO groups in component A is 1.56 mol / g.

[0042] Preparation of component B: Put 20g of methyl ethyl ketone (Hangzhou Chemical Reagent Co., Ltd.) in a container, and add 40g (39.29 mmol OH groups) of fluorocarbon resin ZHM-2 (Dongfu Chemical Industry Co., Ltd.) and 8g of saturated polyester successively under low-speed stirring Resin 168 (6.2 mmol OH groups, 79% solid content, Neupace Resin Co., Ltd.), 6 g 1,4-butanediol (132.16 mmol OH groups, Aladdin's reagent), 1.15 g monobutyltin triisooctoate catalyst( Nantong Youer Chemical Co., Ltd. ), 0.65g wetting and dispers...

Embodiment 2

[0045] Preparation of component A: mix 50g (233.5 mmol NCO group) hexamethylene diisocyanate trimer curing agent HT-90BS (NCO content is 19.6%, Wanhua Chemical Group Co., Ltd.) and 20 g anhydrous toluene ( Hangzhou Chemical Reagent Co., Ltd.) and 30 g of anhydrous ethyl acetate (Hangzhou Chemical Reagent Co., Ltd.) were mixed evenly, filtered to make component A, and stored in a dry sealed tank for use. The NCO group in component A The mass molar concentration of is 2.335 mmol / g.

[0046] Preparation of component B: Put 25g of anhydrous xylene (Hangzhou Chemical Reagent Co., Ltd.) in a container, and add 30g (32.14 mmol OH groups) of fluorocarbon resin GK570 (Dakin in Japan) and 10g of saturated polyester successively under low-speed stirring Resin 1611 (3.54 mmol OH group, solid content 70%, New Pace Resin Co., Ltd.), 6g n-butanol etherified melamine formaldehyde resin Rsimene 750 (solid content 80%, Insole), 4.52g ethylene glycol (72.77 mmol OH group, Aladdin reagent), 0.48...

Embodiment 3

[0049] Preparation of component A: Mix 40g (206.56 mmol NCO groups) hexamethylene diisocyanate trimer curing agent TKA100 (Asahi Kasei Chemical Co., Ltd.) with 20 g of anhydrous dibutyl ketone (Hangzhou Chemical Reagent Co., Ltd.) and 30 g Anhydrous butyl acetate (Hangzhou Chemical Reagent Co., Ltd.) was mixed evenly, filtered to make component A, and stored in a dry sealed tank for use. The molar concentration of NCO groups in component A was 2.066 mmol / g .

[0050] Preparation of component B: Put 23g of anhydrous methyl ethyl ketone (Hangzhou Chemical Reagent Co., Ltd.) in a container, and add 40g (46.4 mmol OH groups) of fluorocarbon resin L101 (Wanbo Paint Chemical Co., Ltd.) successively under low-speed stirring, and 5g of saturated Polyester resin 1715 (3.48 mmol OH group, solid content 71%, New Pace Resin Co., Ltd.), 5g isobutanol etherified amino resin Maprenal MF 590 (solid content 55%, Incely), 2g glycerin (65.16 mmol OH group, Aladdin's reagent), 0.82g stannous oct...

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PUM

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Abstract

The invention discloses a weatherability fluorocarbon paint and a preparation method thereof. The paint is composed of a component A and a component B, wherein the component A comprises an isocyanate curing agent and a waterless diluent A, and the component B comprises fluorocarbon resin, saturated polyester, low molecular compound containing special reactive groups, a catalyst, and a waterless diluent B. The component A and the component B are mixed according to a substance amount ratio of NCO/OH of 0.6-1.5:1.0 so as to obtain the fluorocarbon paint. Saturated polyester is added into the paint so as to soften the coating formed by the paint. At the same time, the added low molecular compound containing special reactive groups effectively increases the crosslinking density of coating, so that the coating is hard and flexible, has a strong weatherability and excellent wear resistant property, and can be used to prepare a solar battery backplane which can be used under severe climate conditions.

Description

technical field [0001] The invention relates to a weather-resistant fluorocarbon coating and a preparation method thereof. The weather-resistant fluorocarbon coating is suitable for preparing a coated solar battery back plate and belongs to the technical field of material surface protection. Background technique [0002] At present, the problems of energy shortage and environmental pollution encountered by countries in the world in economic development are becoming increasingly prominent. As a green and environmentally friendly new energy source, photovoltaic power generation will surely have broad development prospects. Northwest China has abundant solar energy resources, and the annual radiation can reach up to 7000 MJ / m 2 , can be used as an important strategic area for photovoltaic power generation. However, the climate and environment in Northwest China is relatively harsh, with strong wind and sand. If the solar cell module is to meet the service life of more than 25 ...

Claims

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Application Information

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IPC IPC(8): C09D127/16C09D127/14C09D127/18C09D175/06C09D161/32C09D7/12C08G18/66C08G18/42
Inventor 李景菲林维红俞仁杰周光大林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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