No-solvent double-ingredient polyurethane track material and preparation method thereof
A two-component polyurethane, solvent-free technology, applied in the direction of roads, roads, pavements, etc., can solve the problems of overall product performance gap, lack of independent intellectual property rights, lagging development, etc., to achieve improved environmental performance, good mechanical properties, and low VOC Effect
Inactive Publication Date: 2019-03-01
JIANGMEN CHANGHE CHEM IND GRP
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Problems solved by technology
However, China started late in this field, lagging behind in development, lacking independent intellectual property rights, and there is a big gap in the overall performance of the developed products.
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preparation example Construction
[0050] The preparation process of embodiment 1-4 is:
[0051] Preparation of component A: Add polyether polyol and plasticizer into a reaction kettle equipped with a thermometer, stirring and vacuum system, stir and raise the temperature to 100-115°C, dehydrate under 0.06MPa vacuum to the moisture content of the material in the kettle Below 0.05% by mass, cool down to 60°C, add MDI, heat up to 70-80°C and keep warm to react until the NCO value in the system reaches 7.5%, put it into a nitrogen-protected airtight container for storage after cooling down;
[0052] Preparation of component B: Add polyether polyol and crosslinking agent, pigments, fillers and additives into the dehydration kettle, stir and heat up to 100-110°C, and dehydrate under 0.06MPa vacuum until the moisture content of the material is 0.05 mass % or less; then cool down to 60°C, add 0.05-1 special additives to disperse for 1 hour, filter and pack.
[0053] Preparation of the test piece: According to the NCO...
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Abstract
The invention provides a no-solvent double-ingredient polyurethane track material and a preparation method thereof. The no-solvent double-ingredient polyurethane track material is prepared from an ingredient A and an ingredient B; through being metered in parts by mass, the ingredient A is prepared from the following raw material ingredients of 10 to 60 parts of polyether polyol, 10 to 20 parts ofplasticizing agents and 10 to 40 parts of methyl diphenylene diisocyanate; through being metered in parts by mass, the ingredient B is prepared from the following raw material ingredients of 20 to 50parts of polyether polyol, 1 to 6 parts of cross-linking agents, 0 to 5 parts of pigments, 0 to 50 parts of filling materials, 0 to 2 parts of auxiliary agents and 0 to 1 part of special auxiliary agents. The no-solvent double-ingredient polyurethane track material belongs to a no-solvent product and has the advantages of low VOC, no toxicity and no smell; the performance can be comparable with solvent type products; pollution cannot be caused to the environment; high economic benefits are realized; the environment is protected; the economic performance is realized; the mechanical performanceis excellent.
Description
technical field [0001] The invention belongs to the field of polymer application materials, and in particular relates to a solvent-free two-component polyurethane track material and a preparation method thereof. Background technique [0002] The existing runway materials are mainly made of solvent-based polyurethane (such as solvent-based TDI polyurethane, solvent-based MDI polyurethane), which has excellent mechanical properties, but this type of material will produce higher volatile organic compounds (VOCs) during use. ) emissions, pungent smell, toxic, harmful to health, has been unable to meet the increasingly high demand for environmental protection. [0003] Ansolvating materials is considered to be an effective way to overcome and improve VOC emissions. Studies have shown that solvent-free two-component polyurethane materials not only have the excellent characteristics of polyurethane materials, but are comparable to solvent-based products in performance, and will no...
Claims
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IPC IPC(8): C08G18/76C08G18/48C08K5/101E01C13/06
CPCC08G18/4812C08G18/4829C08G18/7671C08K5/101E01C13/065
Inventor 赵文海
Owner JIANGMEN CHANGHE CHEM IND GRP