Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyurethane modified primer

A polyurethane modification and primer technology, applied in the field of coatings, can solve the problems of affecting the construction progress, inability to use, falling off, etc., and achieve the effects of ensuring project quality, improving curing speed, and increasing application range

Active Publication Date: 2018-04-13
青岛费米新材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing primers compatible with polyurethane / polyurea materials include epoxy primers and polyurethane primers. Epoxy primers generally have a long curing time, which affects the construction progress, and are often unusable in winter; most polyurethane primers use Prepared with isocyanate and castor oil, etc., such primers often lose the bonding force between polyurethane / polyurea and the primer after long-term water immersion, which often leads to peeling off

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

[0022] Component A: bisphenol A epoxy resin E20, 42 parts; xylene, 28 parts; butyl acetate, 29.5 parts; silicone substrate wetting agent, Tego KL245, 0.5 parts. Mix these four substances and stir thoroughly to dissolve the epoxy resin E20 thoroughly.

[0023] Component B: PM200 from Yantai Wanhua Chemical Group, 38 parts; HDI trimer HT-90B, 28 parts; xylene, 17 parts; butyl acetate, 17 parts.

[0024] Instructions:

[0025] 1. The cast iron substrate is shot blasted to Sa 2.5; the concrete substrate is kept clean, and the moisture content is below 7%;

[0026] 2. Mix A and B components evenly according to the weight ratio A:B=4:1, and apply it to cast iron and concrete substrates by spraying;

[0027] 3. After the surface of the primer is dry, spray the fast-curing high-strength polyurethane elastomer material.

[0028] After testing, after applying this primer, the primer will be surface-dry in about 1.5 hours under the conditions of temperature 23°C and humidity 50%. Usi...

Embodiment 2

[0030] Component A: South Asia epoxy NPES-901, 45 parts; xylene, 28 parts; butyl acetate, 26.5 parts; silicone substrate wetting agent, Tego wet270, 0.5 parts. Mix these four substances and stir thoroughly to dissolve the epoxy resin NPES-901 thoroughly.

[0031] Component B: M20S of BASF in Germany, 38 parts; HDI trimer HT-100, 30 parts; xylene, 16 parts; butyl acetate, 16 parts.

[0032] Instructions:

[0033] 1. The stainless steel substrate is shot blasted to Sa 2.5 level; the concrete substrate is kept clean, and the moisture content is below 7%;

[0034] 2. Mix A and B components evenly according to the weight ratio A:B=4:1, and apply it on stainless steel and concrete substrates by brushing;

[0035] 3. After the surface of the primer is dry, spray the fast-curing high-strength polyurethane material.

[0036] After testing, after applying this primer, the primer will be surface-dry in about 1.5 hours under the conditions of temperature 23°C and humidity 50%. Using t...

Embodiment 3

[0038] Component A: South Asia epoxy NPES-902, 40 parts; xylene, 30 parts; butyl acetate, 29.5 parts; silicone substrate wetting agent, Tego wet270, 0.5 parts. Mix these four substances and stir thoroughly to dissolve the epoxy resin NPES-902 thoroughly.

[0039] Component B: M20S of BASF in Germany, 35 parts; N3390, 35 parts; Xylene, 15 parts; Butyl acetate, 15 parts.

[0040] Instructions:

[0041] 1. The metal aluminum substrate is roughened with an angle grinder; the concrete substrate is kept clean, free from water and oil, and the moisture content is below 7%;

[0042] 2. Mix A and B components evenly according to the weight ratio A:B=4:1, and apply it to metal aluminum and concrete substrates by roller coating;

[0043] 3. After the surface of the primer is dry, apply a high-strength weather-resistant polyurea topcoat.

[0044] After testing, after applying this primer, the primer will be surface-dry in about 1.5 hours under the conditions of temperature 23°C and hum...

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

No PUM Login to View More

Abstract

The invention relates to a polyurethane modified primer, and belongs to the technical field of coatings. The polyurethane modified primer comprises a component A and a component B, wherein the component A is prepared from the following raw materials in percentage by weight: 40 to 45% of bisphenol A epoxy resin, 55% to 60% of thinner, and 0.1% to 0.5% of additive; the component B is prepared from the following raw materials in percentage by weight: 25% to 40% of polymerizing MDI (methylenediphenyl diisocyanate), 25% to 40% of HDI (hexamethylene diisocyanate) tripolymer, and 20 to 40% of thinner, wherein the epoxy equivalent of the bisphenol A epoxy resin is 450 to 710. The polyurethane modified primer has the advantages that the special epoxy resin-modified polyurethane composite system isused as the primer, so that the curing speed is greatly improved, and the polyurethane modified primer can be normally used in winter; when the polyurethane modified primer is soaked into water with temperature below 70 DEG C, the influence to binding ability is avoided; the engineering quality is guaranteed, and the application range of polyurethane / polyurea material is broadened.

Description

technical field [0001] The invention relates to a polyurethane modified primer, which belongs to the technical field of coatings. Background technique [0002] Whether it is a quick-response spray polyurethane / polyurea waterproof and anti-corrosion material or a polyurethane / polyurea coating, it has been widely used in many industries due to its excellent comprehensive performance. In order to meet the waterproof and anti-corrosion performance and practicability and other reasons in the design, the product often has a low bonding force with metal and concrete substrates, especially after long-term immersion in water, which often leads to problems such as peeling off and swelling of polyurethane / polyurea materials, so it must be Use matching primer to solve. There are several functions of the matching primer. One is to increase the bonding force with metal substrates and concrete substrates. At the same time, it can also have good bonding force with polyurethane / polyurea mat...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00
Inventor 高树峰焦倩邱景苏立克张建国
Owner 青岛费米新材料科技有限公司