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Long-acting moldproof low-hygroscopicity high-adsorptivity plant fiber material type glass moldproof parting powder

A plant fiber material, high adsorption technology, applied in the field of fine chemicals, can solve the problems of agglomeration, uneven powder spraying, etc., and achieve the effect of eliminating low retention, avoiding agglomeration, and high adsorption

Inactive Publication Date: 2015-04-29
南京汉旗新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the long-term use process, the powder will appear a slight powder agglomeration phenomenon due to moisture absorption, resulting in uneven powder spraying; in addition, for particularly harsh weather conditions or a particularly long storage period, the effect of delaying mildew prevention is not good. good

Method used

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  • Long-acting moldproof low-hygroscopicity high-adsorptivity plant fiber material type glass moldproof parting powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material ratio (parts by weight): coconut shell powder (after sieving) 75, compound acid (adipic acid:malic acid=1:1, mass ratio) 25, silane coupling agent KH590.

[0031] Preparation:

[0032] 1. Pass the coconut shell powder through an 80 mesh (180μm) sieve.

[0033] 2. Prepare compound acid solution with deionized water, the concentration is 15%.

[0034] 3. Add the sieved coconut shell powder into the solution, stir evenly, and let stand for 10 hours.

[0035] 4. Keep the mixture at 150kPa and 100°C for 16 hours.

[0036] 5. Dry the wet powder obtained in step 4 at 90°C until the water content is 8-12%.

[0037] 6. Make KH590: ethanol: water into a solution in the ratio of (20:72:8, mass ratio), spray according to KH590: the dry powder obtained in step 5 (auxiliary: dry powder = 0.25:99.75), and stir while spraying , and stirred for 1 hour.

[0038] 7. Dry the material obtained in step 6 at 70°C until the water content is 3-7%.

Embodiment 2

[0040] Raw material ratio (parts by weight): wood flour 85, compound acid and salt (maleic acid: tartaric acid: sodium tartrate = 1:3:1, mass ratio) 15, silane coupling agent A151.

[0041] Preparation:

[0042] 1. Pass the wood flour through a 80 mesh (180μm) sieve.

[0043] 2. Prepare compound acid solution with deionized water, the concentration is 25%.

[0044] 3. Add the sieved coconut shell powder to the solution in step 2, stir evenly, and let stand for 14 hours.

[0045] 4. Keep the mixture at 200kPa and 90°C for 20 hours.

[0046] 5. Dry the wet powder obtained in step 4 at 110°C until the water content is 8-12%.

[0047] 6. Make a solution of A151: ethanol: water (20:72:8, mass ratio), spray according to A151: the dry powder obtained in step 5 (auxiliary: dry powder = 0.40:99.60), and stir while spraying , and stirred for a total of 1.5 hours.

[0048] 7. Dry the material obtained in step 6 at 80°C until the water content is 3-7%.

Embodiment 3

[0050] Raw material ratio (parts by weight): coconut shell powder 90, compound organic acid (citric acid:adipic acid=4:1, mass ratio) 10, silane coupling agent A172.

[0051] Preparation:

[0052] 1. Pass the coconut shell powder through an 80 mesh (180μm) sieve.

[0053] 2. Prepare a compound organic acid solution with deionized water at a concentration of 20%.

[0054] 3. Add the sieved coconut shell powder to the solution in step 2, stir evenly, and let stand for 12 hours.

[0055] 4. Keep the mixture at 250kPa and 105°C for 18 hours.

[0056] 5. Dry the wet powder obtained in step 4 at 140°C until the water content is 8-12%.

[0057] 6. Make a solution of A172: methanol: water (20:72:8, mass ratio), spray according to A172: the dry powder obtained in step 5 (auxiliary: dry powder = 1.50:98.50), and stir while spraying , and stirred for a total of 2 hours.

[0058] 7. Dry the material obtained in step 6 at 90°C until the water content is 3-7%.

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Abstract

The invention discloses a long-acting moldproof low-hygroscopicity high-adsorptivity plant fiber material type glass moldproof parting powder. The invention is characterized in that the parting powder is prepared by performing surface modification on a plant fiber powder. The preparation method comprises the following steps: adding plant fiber powder into a modifier solution, standing at 60-250 DEG C under the absolute pressure of 100-300 KPa to perform primary modification treatment, carrying out primary drying, adding an assistant or assistant solution to perform secondary modification treatment, and finally, carrying out secondary drying, wherein the modifier is selected from one or more of organic acids and acid salts, and the assistant is selected from one or more of silane coupling agents. The product has the characteristics of high adsorptivity and low hygroscopicity, has slowly released moldproof components, and is especially suitable for long-term storage or glass moldproofing in a transportation process under severe environmental conditions. The product is easy to clean, and can not influence the subsequent processing and use of the glass.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to an anti-mildew isolation powder sprayed on the surface of glass and a preparation method thereof. Background technique [0002] In the glass manufacturing industry, in order to avoid the huge losses suffered by the erosion and bonding of the glass surface, the most popular method in the world is to spray glass anti-mildew isolation powder on the glass surface. [0003] In the past, anti-mildew and isolation powders were simply mixed with solid acidic anti-mildew materials and polymers. Due to the differences in the density and surface physical properties of the acid materials and polymers, the mixing uniformity of the anti-mildew and isolation powder products was poor, and each Components are prone to separation during subsequent packaging, transportation, use, etc., resulting in local functional imbalance. Due to this imbalance, it is difficult for this type of anti-mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08J3/00C03C17/28
Inventor 朱虹李建红李忠孟庆华程道远
Owner 南京汉旗新材料股份有限公司
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