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Long-glass fiber reinforced polyvinyl alcohol material and preparation method thereof

A long glass fiber and polyvinyl alcohol technology, applied in the field of materials, can solve the problems of limited application market, restricting the production capacity of PVA industry, and unfavorable important role of PVA, etc., achieve excellent mechanical strength, easy to realize industrialization, excellent gas barrier and oil resistance The effect of material properties

Pending Publication Date: 2019-03-26
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the excellent material potential of PVA has not been fully utilized. On the other hand, the solution method makes PVA only capable of preparing low-dimensional products (fibers, films) or as auxiliary and auxiliary materials (textile pulp, adhesives, polymers). Additives, low-tension coatings, etc.), the application market is limited, which restricts the further increase of PVA industrial production capacity, and is not conducive to the important role of non-petroleum route PVA in the sustainable development of the national economy

Method used

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  • Long-glass fiber reinforced polyvinyl alcohol material and preparation method thereof
  • Long-glass fiber reinforced polyvinyl alcohol material and preparation method thereof
  • Long-glass fiber reinforced polyvinyl alcohol material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare according to the following method according to the materials and components of Example 1 in the corresponding table 1-3:

[0030] Step 1 prepares 70 parts of long glass fiber reinforced polyvinyl alcohol masterbatch: according to the material components in long glass fiber reinforced polyvinyl alcohol masterbatch (wherein polyvinyl alcohol 0499 accounts for 25wt%, long glass fiber accounts for 65wt%, vinyl ethylene glycol Alcohol accounts for 5wt%, nicotinamide accounts for 5wt%) polyvinyl alcohol 0499, flow modifier (vinyl glycol, nicotinamide) are premixed in a high-speed mixer according to parts by weight for 0.5min, and then the mixture is placed in Stand still in the reaction kettle for 0.5h; then, put the above mixture into the twin-screw extruder, extrude the polyvinyl alcohol melt into the impregnation mold connected with the head of the twin-screw extruder, and then pass the long glass fiber through the impregnation Mold, so that the long glass fiber is...

Embodiment 2

[0036] Prepare according to the following method according to the materials and components of Example 1 in the corresponding table 1-3:

[0037] Step 1 prepares 80 parts of long glass fiber reinforced polyvinyl alcohol masterbatch: according to the material components in long glass fiber reinforced polyvinyl alcohol masterbatch (wherein polyvinyl alcohol 0575 accounts for 45wt.%, long glass fiber accounts for 54wt% glutamine accounts for 1wt%) with polyvinyl alcohol 0575, flow modifier (glutamine) is premixed 5min in the high-speed mixer according to parts by weight, after the mixture is placed in the reactor and left to stand for 3h; In the screw extruder, the polyvinyl alcohol melt is extruded into the impregnation mold connected with the head of the twin-screw extruder, and then the long glass fiber is passed through the impregnation mold, so that the long glass fiber is fully impregnated by the melt, and finally cooled, Traction and pelletizing to obtain long glass fiber r...

Embodiment 3

[0042] Prepare according to the following method according to the materials and components of Example 1 in the corresponding table 1-3:

[0043] Step 1 prepares 55 parts of long glass fiber reinforced polyvinyl alcohol masterbatch: according to the material components in long glass fiber reinforced polyvinyl alcohol masterbatch (wherein polyvinyl alcohol 1792 accounts for 55wt%, long glass fiber accounts for 40wt%, glutamine accounts for 1wt%, urea accounts for 4wt%) with polyvinyl alcohol 1792, flow modifier (glutamine accounts for, urea) premixes 1min in the high-speed mixer according to parts by weight, and then puts the mixture in the reactor and stands still for 1h Then, put the above mixture into the twin-screw extruder, extrude the polyvinyl alcohol melt into the impregnation die connected with the head of the twin-screw extruder, then pass the long glass fiber through the impregnation die, so that the long glass fiber is The melt is fully impregnated, and finally coole...

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Abstract

The invention relates to a long-glass fiber reinforced polyvinyl alcohol material and a preparation method thereof. The material contains the following components in parts by weight: 40-80 parts of long-glass fiber reinforced polyvinyl alcohol master batches, 0-40 parts of polyvinyl alcohol and 10-20 parts of a functional master batches. The invention further discloses a preparation method of thelong-glass fiber reinforced polyvinyl alcohol material. The long-glass fiber reinforced polyvinyl alcohol material has excellent mechanical strength, rigidity, heat resistance and dimensional stability which are far superior to long-glass fiber reinforced polypropylene materials and are comparable to long-glass fiber reinforced engineering plastics, but the long-glass fiber reinforced polyvinyl alcohol material is equal to general plastic and is far cheaper than engineering plastic; a formed product is light; meanwhile, the product is environment-friendly and biodegradable; besides, the product has excellent gas barrier property and oil resistance; and meanwhile, the material has strong adhesive strength to glass fibers, the after-treatment process of the surface of a glass fiber is omitted, the production process is relatively environment-friendly, and the production rate is relatively high.

Description

technical field [0001] The invention relates to a long glass fiber reinforced polyvinyl alcohol material and a preparation method thereof, belonging to the field of material technology. Background technique [0002] my country is a major producer of polyvinyl alcohol (PVA), with the output ranking first in the world, accounting for about 50% of the world's total production capacity and total output. It is a polymer material that our country has an important influence on the world and has unique development advantages. my country is also the world's largest consumer of PVA, with an actual consumption of more than 500,000 tons per year. On the other hand, its own strong hydrogen bond structure endows it with excellent mechanical properties, which are comparable to engineering plastics, but its price is much lower than engineering plastics, which is comparable to general-purpose plastics. Therefore, it has very broad application prospects. [0003] It should be emphasized that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L51/06C08L31/04C08K7/14C08J5/04
CPCC08J5/043C08J2429/04C08J2431/04C08J2451/06C08J2329/04
Inventor 王滨刘曙阳蒋顶军王翔赵泳
Owner NANJING JULONG SCI&TECH CO LTD
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