Polyurethane elastomer antifreezing faucet and preparation method thereof

A polyurethane elastomer and faucet technology, applied in the field of polyurethane products, can solve problems such as waste of water resources, waste of faucets, cracking of faucets, etc., and achieve the effects of good water resistance, good expansion coefficient, and safe raw material components

Inactive Publication Date: 2016-12-14
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the cold northern region, the outdoor temperature is low in winter, and the faucet is often cracked outdoors due to the volume expansion of freezing water, resulting in the faucet being scrapped, resulting in waste of water resources, frequent replacement of faucets, etc.

Method used

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  • Polyurethane elastomer antifreezing faucet and preparation method thereof
  • Polyurethane elastomer antifreezing faucet and preparation method thereof
  • Polyurethane elastomer antifreezing faucet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The polyurethane elastomer antifreeze faucet is composed of a copper valve core, an iron handle, a faucet housing and a fixing nut. The faucet housing and the fixing nut are made of the following raw materials in parts by weight:

[0028]

[0029] Its preparation method is as follows:

[0030] (1) Heat polyether polyol DDL-1000D at 110°C for 2 hours in vacuum dehydration, cool down to 25°C, add polyisocyanate MDI-50, heat up to 82°C and react for 2.5 hours, cool down to 45°C, add catalyst CUCAT HA and mix Evenly, to obtain a prepolymer, sealed for later use;

[0031] (2) Heat vulcanizing agent MOCA to 120°C and dissolve it in polyether polyol DDL-400, and mix evenly to obtain a mixture;

[0032] (3) Heating the prepolymer and the mixture to 80°C, mixing them evenly, pouring them into a mold, pressing the mold at 120°C for 0.25 hours, vulcanizing after demoulding, and obtaining the faucet shell and fixing nut;

[0033] (4) Assemble the copper spool, iron handle, fau...

Embodiment 2

[0042] The polyurethane elastomer antifreeze faucet is composed of a copper valve core, an iron handle, a faucet housing and a fixing nut. The faucet housing and the fixing nut are made of the following raw materials in parts by weight:

[0043]

[0044] Its preparation method is as follows:

[0045] (1) Heat polyether polyol DDL-1000D at 105°C for 1.5 hours in vacuum dehydration, cool down to 20°C, add polyisocyanate MDI-50, heat up to 80°C and react for 2 hours, cool down to 40°C, add catalyst CUCAT HA and mix Evenly, to obtain a prepolymer, sealed for later use;

[0046] (2) Heat vulcanizing agent MOCA to 110°C and dissolve it in polyether polyol DDL-400, and mix evenly to obtain a mixture;

[0047] (3) Heating the prepolymer and the mixture to 70°C, mixing them evenly and pouring them into a mold, pressing the mold at 110°C for 0.2 hours, vulcanizing after demoulding, to obtain the faucet shell and the fixing nut;

[0048] (4) Assemble the copper spool, iron handle, f...

Embodiment 3

[0057] The polyurethane elastomer antifreeze faucet is composed of a copper valve core, an iron handle, a faucet housing and a fixing nut. The faucet housing and the fixing nut are made of the following raw materials in parts by weight:

[0058]

[0059] Its preparation method is as follows:

[0060] (1) Heat polyether polyol DDL-1000D at 115°C for 2.5 hours in vacuum dehydration, cool down to 30°C, add polyisocyanate MDI-50, heat up to 85°C and react for 3 hours, cool down to 50°C, add catalyst CUCAT HA and mix Evenly, to obtain a prepolymer, sealed for later use;

[0061] (2) Heat vulcanizing agent MOCA to 130°C and dissolve it in polyether polyol DDL-400, and mix evenly to obtain a mixture;

[0062] (3) Heating the prepolymer and the mixture to 90°C, mixing them evenly, pouring them into a mold, pressing the mold at 130°C for 0.3 hours, vulcanizing after demoulding, and obtaining the faucet shell and fixing nut;

[0063] (4) Assemble the copper spool, iron handle, fauc...

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Abstract

The invention belongs to the technical field of polyurethane products, and particularly relates to a polyurethane elastomer antifreezing faucet and a preparation method thereof. The antifreezing faucet is formed by combining a copper valve core, an iron handle, a faucet casing and fixing screw nuts, wherein the faucet casing and the fixing screw nuts are prepared from the following raw materials in parts by weight: 48 to 79 parts of polyether polyol A, 4 to 9 parts of polyether polyol B, 8 to 19 parts of vulcanizing agents, 0.1 to 0.6 part of catalysts and 15 to 40 parts of polyisocyanates, wherein the polyether polyol A uses polyether polyol with the functionality degree being 1.5 to 2.5 and the molecular weight being 500 to 1500; the polyether polyol B uses polyether polyol with the functionality degree being 1.5 to 2.5 and the molecular weight being 300 to 500. The antifreezing faucet has good low temperature resistant performance, good water resistance performance, good expansion coefficient and good wear resistant performance; the preparation method is simple and is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of polyurethane products, and in particular relates to a polyurethane elastomer antifreeze faucet and a preparation method thereof. Background technique [0002] As a necessity, the faucet has a relatively mature manufacturing process, a simple structure and stable performance. Traditional faucets are mostly made of stainless steel, cast iron or PVC hard plastic. However, in the cold northern region, the outdoor temperature is low in winter, and the faucet is often cracked outdoors due to the volume expansion of freezing water, resulting in the faucet being scrapped, resulting in waste of water resources, frequent replacement of faucets and other problems. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a polyurethane elastomer antifreeze faucet, which has good low temperature resistance, water resistance, expansion coeffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/10F16K27/00F16K51/00
CPCC08G18/10C08G18/4804C08G18/6685C08G18/7671F16K27/00F16K51/00
Inventor 荆晓东耿佃勇董伟王帅马炎
Owner ZIBO DEXIN LIANBANG CHEM IND
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