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Application of modified bentonite

A bentonite modification technology, applied in the application field of modified bentonite, can solve the problems of short thermal stability time, modified bentonite alkali content, low activity index, etc.

Inactive Publication Date: 2017-12-15
广西汇智生产力促进中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide an application of modified bentonite to solve the problems of low alkali content, low activity index and short thermal stability time of modified bentonite in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of PVC heat-resistant agent, comprising the following steps:

[0036] S1: Mix bentonite and activated clay wastewater with a concentration of 2.4% at a weight ratio of 1:2.51, and stir evenly at a rotating speed of 300r / min to obtain slurry material A;

[0037] S2: The slurry material A prepared in step S1 is added to a mixed acid with a concentration of 7.2%, and the mixed acid is oxalic acid with a concentration of 14.3wt%, tartaric acid with a concentration of 30-36.2wt%, and citrate with a concentration of 21.7wt%. A mixed acid composed of rafter acid in a volume ratio of 1.8:2.5:1.2, the weight ratio of the slurry material A to the mixed acid is 1:3.6, adding ferrous ammonium sulfate, magnesium oxide and diethylene triethylene oxide under the condition of 300r / min at a rotating speed Sodium amine pentacarboxylate is stirred, and the weight ratio of described ferrous ammonium sulfate, magnesium oxide, sodium diethylenetriamine pentacarboxylate a...

Embodiment 2

[0048] A preparation method of PVC heat-resistant agent, comprising the following steps:

[0049] S1: Mix bentonite and activated clay wastewater with a concentration of 12.2% in a weight ratio of 1.8:9.3, and stir evenly at a rotating speed of 400r / min to obtain slurry material A;

[0050] S2: the slurry material A that step S1 makes is joined in the mixed acid that concentration is 15%, and described mixed acid is the oxalic acid of concentration 17.2wt%, the tartaric acid of concentration 34.5wt%, the citrate of concentration 22wt%. Mixed acid with a volume ratio of 4.1:3.6:1.8, the weight ratio of slurry material A to mixed acid is 1.9:10, add ferrous ammonium sulfate, magnesium oxide and diethylene triamine pentacarboxylate under the condition of 400r / min Sodium acid is stirred, and the weight ratio of described ferrous ammonium sulfate, magnesium oxide, sodium diethylenetriamine pentacarboxylate and slurry material A is 3-5:1.4-2.8:0.6-1.2:49.8-153, at microwave power 1...

Embodiment 3

[0061] A preparation method of PVC heat-resistant agent, comprising the following steps:

[0062] S1: Mix bentonite and activated clay wastewater with a concentration of 20.2% in a weight ratio of 2.6:16, and stir evenly at a rotating speed of 500r / min to obtain a slurry material A;

[0063] S2: the slurry material A that step S1 makes is joined in the mixed acid that concentration is 22.4%, and described mixed acid is the oxalic acid of concentration 19.6wt%, the tartaric acid of concentration 36.2wt%, the citrate of concentration 22.3wt% Mixed acid composed of volume ratio 6.3:5.2:2.6, the weight ratio of slurry material A to mixed acid is 2.8:17, add ferrous ammonium sulfate, magnesium oxide and diethylene triamine pentachloride under the condition of 500r / min Sodium carboxylate is stirred, and the weight ratio of described ferrous ammonium sulfate, magnesium oxide, sodium diethylenetriamine pentacarboxylate and slurry material A is 3-5:1.4-2.8:0.6-1.2:49.8-153, in microwav...

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Abstract

The invention discloses an application of modified bentonite and belongs to the technical field of deep processing of bentonite. The modified bentonite is applied as a PVC heat resistant agent, and the PVC heat resistant agent is prepared through steps as follows: blending and pulping, acid activation reaction, filter pressing, alkalization, surface modification, drying, smashing and the like. The prepared PVC heat resistant agent is non-toxic, odorless, safe and environmentally friendly and has excellent performance, wherein alkali content reaches 52wt%-58wt%, activity index is 98%-99%, and thermal stabilization time is 169-180 min.

Description

【Technical field】 [0001] The invention belongs to the technical field of bentonite deep processing, and in particular relates to an application of modified bentonite. 【Background technique】 [0002] Bentonite is called natural nano material and universal clay. The quality of bentonite in my country is excellent, and its ore reserves rank second in the world. Except for a small amount of exports as raw materials for organic bentonite, the rest are sold domestically in the form of bentonite powder and activated clay. These products are primary products with low economic benefits and low resource utilization levels. . In order to obtain greater economic benefits, it is necessary to develop serialized new products with high-tech content and expand new areas of application. [0003] PVC (polyvinyl chloride) is a thermoplastic polymer produced by the polymerization of vinyl chloride. Because its products have the advantages of easy control of hardness, good mechanical properties,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/02C08K9/04C08K9/00C08K9/08C08K3/34C08K3/30C08K3/22C08K5/17C08L27/06
CPCC08K13/06C08K3/22C08K3/30C08K3/346C08K5/17C08K9/00C08K9/02C08K9/04C08K9/08C08K2003/222C08K2003/3045C08L2201/08C08L27/06
Inventor 梁胜仁
Owner 广西汇智生产力促进中心有限公司
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