CN1323848A - Rare earth modified cast mylon preparing process - Google Patents
Rare earth modified cast mylon preparing process Download PDFInfo
- Publication number
- CN1323848A CN1323848A CN 00107323 CN00107323A CN1323848A CN 1323848 A CN1323848 A CN 1323848A CN 00107323 CN00107323 CN 00107323 CN 00107323 A CN00107323 A CN 00107323A CN 1323848 A CN1323848 A CN 1323848A
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- rare earth
- rare
- neodymium
- neodymium naphthenate
- nylon
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The present invention relates to the preparation of rare earth modified costing type nylon, it synthesizes neody mium naphthenate rare earth modifier and rare earth ester coupling agent, so that the various mechanical properties of the synthesized material are raised by about 20%, the molecular weight of the nylon is doubled, crystallinity is raised by about 7%, the heat resistance of MC nylon is increased by 30 deg.C, water absorption is reduced by 50%, the size of MC mylon is improved, fastness to wear and other mechanical properties are improved.
Description
The present invention relates to a kind of naphthenic acid mishmetal properties-correcting agent, belong to the synthetic materials modification.
At present, rare earth modified MC nylon mainly contains two kinds, and a kind of is that the rare-earth original ore powder is as the weighting agent modified MC nylon; Be mainly and reduce cost improved performance; Another kind is a naphthenic acid mishmetal kerosin modified MC nylon, and this properties-correcting agent is also dosed other synthetic materialss such as synthetic glass, fluoroplastics, and every mechanical property improves about 20%, and wear resistance doubles.Relevant neodymium naphthenate rare-earth modifier is not reported for work as yet.
The purpose of this invention is to provide a kind of rare earth modified cast mylon preparing process, every mechanical property of synthetic materials improves about 20%, and the molecular weight of MC nylon increases and is twice, degree of crystallinity improves about 7%, thermotolerance improves 30 ℃, and water-intake rate reduces more than one times, and cost is low, processing method is simple.
Rare earth modified cast mylon preparing process of the present invention, its preparation process is:
(1) the Neodymium trichloride dilution is the aqueous solution, with the naphthenic acid mixing of accurate acid value;
(2) with alkaline solution neutralization, treat that neutralization is finished after, heating is reaction fully, the neodymium naphthenate layer is got in static separation, fully is washed to neutrality, is neodymium naphthenate;
(3) with neodymium naphthenate oxygenolysis in air, available gasoline, kerosene mix, and are the neodymium naphthenate rare-earth modifier;
(4), after extremely active hexanolactam positively charged ion is completed into, add the neodymium naphthenate rare-earth modifier with MC nylon production technique;
(5) will dewater once more, and carry out static cast poymerization, its add-on is 5~7%, when its water content meets the polymerization requirement, adds isocyanic acid lipid promotor, mixes, and carries out in-site polymerization.
Rare earth modified cast mylon preparing process of the present invention, be characterized in: naphthenic acid rare earth is generally the naphthenic acid mishmetal, and in mishmetal, the rare earth that has played modifying function is a neodymium, synthesize the neodymium naphthenate rare-earth modifier, thereby found the single rare earth kind in the rare earth class modifying element.In addition, the present invention has also synthesized rare earth organic ester coupling agent.Above-mentioned two class rare-earth modifiers add after MC nylon activated monomer is finished, in polymkeric substance, rare-earth modifier forms polymerization site, thereby increase MC nylon molecular weight more than one times, improve degree of crystallinity about 7%, and make the crystalline form refinement, crystallizing field and noncrystalline domain miniaturization, pencil fracture after fracture, occurs, be ductile rupture but not common MC nylon has brittle rupture.Because molecular weight increases, the MC density of nylon increases, and chemicals-resistant corrosion and water-fast swelling obviously increase, and has improved product size stability and performances such as thermotolerance, chemicals-resistant corrodibility.Because the raising and the refinement of degree of crystallinity make every mechanical property of MC nylon improve about 30%, wear resistance is enhanced about more than once.
Rare earth modified casting nylon products of the present invention, its salient features is as follows:
Proportion kg/m
31170
Water-absorbent % 0.07
Heat-drawn wire ℃ 190
Tensile strength MPa 100
Notched Izod impact strength KJ/m
2570
Coefficient of friction 0.10
Claims (1)
1, a kind of rare modified cast mylon preparing process of going into is characterized in that:
(1) the Neodymium trichloride dilution is the aqueous solution, with the naphthenic acid mixing of accurate acid value;
(2) with alkaline solution neutralization, treat that neutralization is finished after, heating is reaction fully, the neodymium naphthenate layer is got in static separation, fully is washed to neutrality, is neodymium naphthenate;
(3) with neodymium naphthenate oxygenolysis in air, available gasoline, kerosene mix, and are the neodymium naphthenate rare-earth modifier;
(4), after extremely active hexanolactam positively charged ion is completed into, add the neodymium naphthenate rare-earth modifier with MC nylon production technique;
(5) will dewater once more, and carry out static cast poymerization, its add-on is 5~7%, when its water content meets the polymerization requirement, adds isocyanic acid lipid promotor, mixes, and carries out in-site polymerization.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00107323 CN1323848A (en) | 2000-05-11 | 2000-05-11 | Rare earth modified cast mylon preparing process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00107323 CN1323848A (en) | 2000-05-11 | 2000-05-11 | Rare earth modified cast mylon preparing process |
Publications (1)
Publication Number | Publication Date |
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CN1323848A true CN1323848A (en) | 2001-11-28 |
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Family Applications (1)
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CN 00107323 Pending CN1323848A (en) | 2000-05-11 | 2000-05-11 | Rare earth modified cast mylon preparing process |
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CN (1) | CN1323848A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101121787B (en) * | 2007-08-10 | 2010-06-02 | 张静焕 | Modified mould nylon |
CN109097984A (en) * | 2018-08-22 | 2018-12-28 | 安徽利思达网业有限公司 | A kind of preparation method of the super-hydrophobic polyester cloth of water-oil separating |
CN109467693A (en) * | 2018-10-19 | 2019-03-15 | 江苏易元新材料科技有限公司 | A kind of monomer moulding casting nylon and preparation method thereof |
CN115746554A (en) * | 2022-11-12 | 2023-03-07 | 厦门市嘉能科技有限公司 | Low-water-absorption nylon material, preparation method thereof and battery sealing ring |
-
2000
- 2000-05-11 CN CN 00107323 patent/CN1323848A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101121787B (en) * | 2007-08-10 | 2010-06-02 | 张静焕 | Modified mould nylon |
CN109097984A (en) * | 2018-08-22 | 2018-12-28 | 安徽利思达网业有限公司 | A kind of preparation method of the super-hydrophobic polyester cloth of water-oil separating |
CN109097984B (en) * | 2018-08-22 | 2020-11-24 | 安徽利思达网业有限公司 | Preparation method of super-hydrophobic polyester filter cloth for oil-water separation |
CN109467693A (en) * | 2018-10-19 | 2019-03-15 | 江苏易元新材料科技有限公司 | A kind of monomer moulding casting nylon and preparation method thereof |
CN109467693B (en) * | 2018-10-19 | 2020-12-29 | 江苏易元新材料科技有限公司 | Monomer casting nylon and preparation method thereof |
CN115746554A (en) * | 2022-11-12 | 2023-03-07 | 厦门市嘉能科技有限公司 | Low-water-absorption nylon material, preparation method thereof and battery sealing ring |
CN115746554B (en) * | 2022-11-12 | 2024-01-30 | 厦门市嘉能科技有限公司 | Low-water-absorption nylon material, preparation method thereof and battery sealing ring |
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