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Modification method of hydrotalcite powder and application of the modified hydrotalcite powder in calcium-zinc stabilizer

A technology of talcum powder and talc, which is applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc., can solve problems such as waste of raw materials, poor production stability, and decreased gloss of products, so as to avoid roughness and reduce Precipitation, the effect of good lubricating component stability

Inactive Publication Date: 2020-07-31
LINAN HUALI PLASTIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And it also has some insurmountable shortcomings, that is, the thermal stability is extremely poor, and its thermal decomposition leads to the darkening of the product color and the decline of various indicators. It is necessary to use a thermal stabilizer to improve its thermal stability.
[0003] Calcium-zinc composite stabilizer is a composite stabilizer made of calcium, zinc and other metal soaps and salts as the main body, and other additives such as phosphite. It is an environmentally friendly stabilizer and is the main PVC-U environmental protection profile. The stabilizer used is mainly composed of calcium stearate and zinc stearate. In the production of PVC-U profiles, there are the following disadvantages: 1. There are needle-like precipitations in the production process, the gloss of the product decreases, and the production stability becomes poor. ;2. Poor welding in the inner cavity of the product, prone to broken tendons, requires irregular mold cleaning, which affects production efficiency and causes waste of raw materials

Method used

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  • Modification method of hydrotalcite powder and application of the modified hydrotalcite powder in calcium-zinc stabilizer
  • Modification method of hydrotalcite powder and application of the modified hydrotalcite powder in calcium-zinc stabilizer

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Experimental program
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Effect test

Embodiment 1

[0029] The preparation method of modified hydrotalcite powder is as follows:

[0030] Step S1: Raw material hydrotalcite is roughly selected, crushed to a certain particle size, and a certain amount of water and pulping aids are added to make a slurry. The pulping aids are composed of ethylhexyl phosphoric acid, sodium lauryl sulfate and Polyethylene glycol with a molecular weight of 200;

[0031] Step S2: purification;

[0032] Step S3: organic activation, adding a certain amount of organic ammonium salt and an activation auxiliary agent for a certain period of time, and the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride;

[0033] Step S4: filtering, drying, crushing and sieving to obtain modified hydrotalcite powder.

[0034] Among the present invention, the addition amount of pulping auxiliary agent is 3% of raw material hydrotalcite quality, and the mass ratio of sodium lignosulfonate in pulping auxiliary agent is 30%, and the mas...

Embodiment 2

[0036] The preparation method of modified hydrotalcite powder is as follows:

[0037] Step S1: Raw material hydrotalcite is roughly selected, crushed to a certain particle size, and a certain amount of water and pulping aids are added to make a slurry. The pulping aids are composed of ethylhexyl phosphoric acid, sodium lauryl sulfate and Polyethylene glycol with a molecular weight of 600;

[0038] Step S2: purification;

[0039] Step S3: organic activation, adding a certain amount of organic ammonium salt and an activation auxiliary agent for a certain period of time, and the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride;

[0040] Step S4: filtering, drying, crushing and sieving to obtain modified hydrotalcite powder.

[0041] Among the present invention, the addition amount of pulping auxiliary agent is 8% of raw material hydrotalcite quality, and the mass ratio of sodium lignosulfonate in pulping auxiliary agent is 40%, and the mas...

Embodiment 3

[0043] The preparation method of modified hydrotalcite powder is as follows:

[0044] Step S1: Raw material hydrotalcite is roughly selected, crushed to a certain particle size, and a certain amount of water and pulping aids are added to make a slurry. The pulping aids are composed of ethylhexyl phosphoric acid, sodium lauryl sulfate and Polyethylene glycol with a molecular weight of 400;

[0045] Step S2: purification;

[0046] Step S3: organic activation, adding a certain amount of organic ammonium salt and an activation auxiliary agent for a certain period of time, and the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride;

[0047] Step S4: filtering, drying, crushing and sieving to obtain modified hydrotalcite powder.

[0048]In the present invention, the mass ratio of sodium lauryl sulfate in the pulping aid is 35%, the mass percentage of ethylhexyl phosphoric acid is 4%, and the balance is polyethylene glycol. In the organic activa...

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Abstract

The invention relates to a modification method of hydrotalcite powder and an application of the modified hydrotalcite powder in a calcium-zinc stabilizer. The method comprises the following steps: S1,raw material hydrotalcite is subjected to roughing and crushing to a certain particle size, a certain amount of water and a pulping auxiliary agent are added to prepare slurry, and the pulping auxiliary agent is composed of ethylhexyl phosphoric acid, lauryl sodium sulfate and polyethylene glycol with a molecular weight of 200-600; S2, purification; S3, organic activation is conducted, namely a certain amount of organic ammonium salt and an activation auxiliary agent are added, an activation reaction is conducted for a certain period of time, and the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride; and S4, filtering, drying, crushing and sieving are performed to obtain the modified hydrotalcite powder. The inventor of the invention finds that the modified hydrotalcite powder has a good lubricating component stability effect, and the lubricating components are highly dispersed, adsorbed and / or anchored in the modified hydrotalcite powder, so that precipitation is greatly reduced, and unsmoothness of a PVC-U plate is avoided.

Description

technical field [0001] The invention relates to a method for modifying hydrotalcite powder and its application in calcium-zinc stabilizers, and belongs to the technical field of composite calcium-zinc stabilizer processing. Background technique [0002] PVC is one of the five general-purpose plastics, widely used in industry, construction, agriculture and other fields. And it also has some insurmountable shortcomings, that is, its thermal stability is extremely poor, and its thermal decomposition causes the color of the product to become darker, and various indicators drop, so it is necessary to use a thermal stabilizer to improve its thermal stability. [0003] Calcium-zinc composite stabilizer is a composite stabilizer made of calcium, zinc and other metal soaps and salts as the main body, and other additives such as phosphite. It is an environmentally friendly stabilizer and is the main PVC-U environmental protection profile. The stabilizer used is mainly composed of cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/04C09C3/08C09C3/10C08K9/04C08K3/26C08L27/06C08L33/04C08L23/28C08K13/06C08K3/22
CPCC01P2006/37C08K3/26C08K9/04C08K9/08C08K2003/2241C08K2003/265C08L27/06C08L2201/08C08L2205/03C09C1/407C09C3/006C09C3/04C09C3/08C09C3/10C08L33/04C08L23/286C08K13/06C08K3/22
Inventor 楼超民陈云海刘忠清杨家成
Owner LINAN HUALI PLASTIC
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