Flame-retardant polyurethane material and preparation method thereof

A polyurethane material and a flame-retardant technology, applied in the field of flame-retardant polyurethane materials and their preparation, can solve the problems of polyurethane water absorption defects that cannot be improved, single phosphorus-containing flame retardant, low flame retardant efficiency, etc., and achieve reduced performance. The effect of reducing, improving hydrophobicity and improving flame retardant performance
CN112279972AInactive Publication Date: 2021-01-29东阳市聚冉电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
东阳市聚冉电子科技有限公司
Publication Date
2021-01-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a flame-retardant polyurethane material and a preparation method thereof. The preparation method comprises the following steps: (1) adding polyol, diol with double bonds and apolymerization inhibitor into a reaction kettle according to mass fraction, heating to 80-120 DEG C while stirring at 200r / min, vacuumizing to -0.04-0.1 Mpa, keeping for 1-3h, removing moisture in the alcohol, introducing nitrogen to normal pressure, cooling, adding a catalyst of diisocyanate, heating to 50-90 DEG C, reacting for 2-4 hours, and cooling to obtain a prepolymer; and (2) adding a chain extender, a spirobiindene monomer phosphorus-containing acrylate monomer and a radical initiator into the prepolymer, heating to 50-70 DEG C while stirring at 200r / min, reacting for 1-3h, vacuumizing to -0.04-0.1 Mpa, keeping for 1-3h, removing bubbles, injecting the reaction solution into a mold, continuously reacting for 4-8h at 100-130 DEG C, cooling to 40-50 DEG C, and curing for 24-48h toobtain the flame-retardant polyurethane material. The polyurethane material obtained by the invention has good flame retardant property and hydrophobic property, and can be used for preventing fire inthe use process and preventing the performance of the polyurethane material from being reduced due to water absorption in the long-term use process.
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Description

technical field

[0001] The invention relates to the field of polymer materials, in particular to a flame-retardant polyurethane material and a preparation method thereof. Background technique

[0002] Polyurethane material is a kind of polymer material with more carbamate functional groups in its molecular chain. It consists of soft segment and hard segment. With microphase separation, the soft segment provides toughness and the hard segment provides strength, resulting in polyurethane being A material with excellent comprehensive mechanical properties, due to its wide variety of raw materials, various polyurethane products can be prepared, including polyurethane foam, polyurethane adhesive, polyurethane elastomer, etc., with a wide range of applications.

[0003] However, ordinary polyurethane has poor flame retardancy and cannot self-extinguish during use. Once a fire breaks out, it will seriously threaten the lives of the people; polyurethane materials contain more amide ...

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
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