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A kind of n-hexadecylmaleamic acid-lanthanum(iii)-brucite complex

A technology of maleamic acid and hexadecyl, which is applied in the field of N-hexadecyl maleamic acid-lanthanum-brucite complex, can solve the problems of affecting the environment, consumption of alkalis and the like, and achieve uniform distribution , the effect of enhancing compatibility and improving mechanical properties

Active Publication Date: 2019-10-08
XIAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the existing hydrotalcite class PVC heat stabilizer production process, consume a large amount of alkalis, affect the technical problem of environment, one of purpose of the present invention provides a kind of N-hexadecyl maleamic acid-lanthanum (III )-brucite compound, two of the object of the present invention provide a kind of preparation method of N-hexadecylmaleamic acid-lanthanum (III)-brucite compound, three of the object of the present invention provide N -Application of hexadecylmaleamic acid-lanthanum (III)-brucite compound as PVC heat stabilizer, the fourth purpose of the present invention provides a kind of PVC product

Method used

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  • A kind of n-hexadecylmaleamic acid-lanthanum(iii)-brucite complex
  • A kind of n-hexadecylmaleamic acid-lanthanum(iii)-brucite complex
  • A kind of n-hexadecylmaleamic acid-lanthanum(iii)-brucite complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: prepare N-hexadecylmaleamic acid-lanthanum (Ⅲ)-brucite compound, according to such as figure 1 The flow shown proceeds:

[0049] 1) preparing N-hexadecylmaleamic acid;

[0050] 2) Preparation of N-hexadecylmaleamic acid-brucite composite:

[0051] 2.1) Take a certain amount of brucite 100g, and take 1g of N-hexadecylmaleamic acid;

[0052] 2.2) heating and dissolving N-hexadecylmaleamic acid in ethanol to obtain an ethanol solution of N-hexadecylmaleamic acid; adding brucite to water and dispersing by shaking to form a slurry;

[0053] 2.3) Add the ethanol solution of N-hexadecylmaleamic acid into the brucite slurry, heat to 70°C, and stir for 1 hour, then suction filter, dry, and make powder into N-hexadecyl Maleamic acid-brucite complex;

[0054] 3) Preparation of N-hexadecylmaleamic acid-lanthanum (Ⅲ)-brucite composite: According to the molar ratio of N-hexadecylmaleamic acid and lanthanum ions at 2:1, N- Add the cetyl maleamic acid-brucite compoun...

Embodiment 2-14

[0056] Embodiment 2-14: The steps are the same as those in Embodiment 1, and the main parameters are shown in Table 1.

[0057] Table 1 is the parameter list of embodiment 2-8

[0058]

[0059]

[0060] The composite and brucite prepared in embodiment 6 are analyzed by XRD, as figure 2 Shown, wherein HL modified brucite is the product of embodiment 6 step 2.

[0061] From the analysis report of brucite XRD spectrum, it can be seen that the crystal structure of raw brucite is good, the baseline is stable, there are no more impurity peaks, and the peak shape is sharp and symmetrical, indicating that the Mg(HO) in brucite 2 The crystallinity is very high and the crystal form is complete. Through object image retrieval and comparison with the standard card #83-0114, the peaks at 2θ are 18.619°, 38.000°, 50.820°, 58.639°, 62.079°, 68.221°, and 72.059° respectively belong to in Mg(OH) 2 The (001), (011), (012), (110), (111), (103), (201) diffraction crystal planes, by comp...

Embodiment 15

[0076] Using brucite and HL-brucite as a control group, after blending the HL-La (Ⅲ)-brucite prepared in Examples 6, 10, and 11 with PVC respectively, carry out Congo red with reference to the national standard GB2917-2002 test. The specific operation is to weigh 1.5g of the sample to be tested that is mixed evenly, pour it into a test tube, fix the Congo red test paper at 3-5cm from the surface of the sample, put it in an oil bath at 180°C, and record the time when the test paper starts to turn blue as PVC. thermal stabilization time, results as Figure 8 shown. From Figure 8 It can be concluded that the HL-La(Ⅲ)-brucite prepared in Example 8 has the best thermal stability to PVC.

[0077] Simply modifying brucite with N-hexadecylmaleamic acid (HL) weakens the thermal stability of brucite to PVC, especially when the amount of HL-brucite exceeds 3%. The time no longer extends with the increase of the amount added. When introducing La 3+ After ionization, the thermal sta...

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Abstract

The invention relates to an N-hexadecyl maleic acid-lanthanum (III)-brucite compound. A preparation method of the compound comprises the following steps: modifying brucite with N-hexadecyl maleic acidaccording to a wet method, thus obtaining an N-hexadecyl maleic acid-brucite compound, and then introducing La<3+> ions for coordination deposition reaction, thus obtaining the N-hexadecyl maleic acid-lanthanum (III)-brucite compound. The N-hexadecyl maleic acid-lanthanum (III)-brucite compound is directed to solve the technical problems that a large amount of alkali is consumed during the conventional production of a brucite PVC heat stabilizer and the environment is affected. By taking the N-hexadecyl maleic acid as a modifier, the invention successfully realizes transformation of the surface hydrophilicity of the brucite to hydrophobicity, so that an HL-brucite compound is successfully prepared; then the lanthanum ions are introduced, so that an HL-La (III)-brucite compound with smaller particle size and more uniform distribution is obtained.

Description

technical field [0001] The invention belongs to the field of multi-component composites, in particular to a kind of N-hexadecylmaleamic acid-lanthanum (III)-brucite composite, and its application and preparation. Background technique [0002] PVC resin has many excellent mechanical properties and is widely used, and heat stabilizers play an important role in PVC processing aids. The development of PVC materials is accompanied by the development of heat stabilizers, so the development of a non-toxic, efficient, Low-cost heat stabilizers have high application value. The early lead salts were eliminated from the market due to toxicity. At present, metal soap heat stabilizers are mainly used in the market. Organotin is subject to certain restrictions because of its large odor and high cost. At present, the new heat stabilizers are mainly rare earths and hydrotalcites. Hydrotalcite has a significant effect on the thermal stability of PVC, and the static thermal stability time ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K9/02C08K3/22C08L27/06
Inventor 李侃社吴勇鑫梁耀东李苗康洁李锦牛红梅汪晓芹闫兰英陈创前章结兵朱雪丹曹兴龙王晓玢
Owner XIAN UNIV OF SCI & TECH
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