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High-strength and corrosion-resistant modified polypropylene material

A polypropylene material, high-strength technology, applied in the direction of wear-resistant fibers, light-resistant fibers, flame-retardant fibers, etc., can solve the problems of large molding shrinkage, difficult control of the production process, poor compatibility between raw materials, etc., and achieve good Surface slippage and friction resistance, improved UV resistance, and easy crystallization effects

Active Publication Date: 2019-03-01
温州晨光集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problems of existing polypropylene materials are poor toughness, very sensitive to notch, prominent low temperature brittleness, large molding shrinkage, resulting in poor tensile strength and wear resistance, which limits the scope of application
However, there are the following problems: 1. The variety of inorganic fillers and wear-resistant agents is relatively single, and the synergistic effect of wear-resistant enhancement cannot be well exerted; 2. The compatibility between raw materials is poor, and the inorganic fillers cannot be uniformly dispersed in the reaction system; 3. The copolymerization reaction requires harsh reaction conditions of high temperature and high pressure at 280-320°C and 10-15MPa, and the production process is difficult to control

Method used

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  • High-strength and corrosion-resistant modified polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A high-strength wear-resistant modified polypropylene material in this embodiment includes the following raw materials in parts by weight: 185 parts of wear-resistant modified polypropylene base material, 23 parts of nano-silica-sisal fiber composite wear-resistant filler, three 42 parts of ethylene propylene rubber dispersion, 13 parts of multi-wall carbon nanotube-montmorillonite composite reinforcing filler, 5 parts of pp flame retardant masterbatch.

[0039] The preparation method of the wear-resistant modified polypropylene base material comprises the following steps:

[0040] (1) Mixing modification: In parts by weight, weigh 120-150 parts of isotactic polypropylene fiber, 12-18 parts of polyether polyurethane thermoplastic elastomer, 3-6 parts of nanomolybdenum disulfide, 1-3 parts Nano-titanium dioxide powder is put into a reaction kettle, heated and stirred at 50°C for 1 hour under a nitrogen protective atmosphere to obtain a modified mixture; wherein, the melt...

Embodiment 2

[0057] A high-strength wear-resistant modified polypropylene material in this embodiment includes the following raw materials in parts by weight: 195 parts of wear-resistant modified polypropylene base material, 18 parts of nano-silica-sisal fiber composite wear-resistant filler, three 46 parts of ethylene propylene rubber dispersion, 13 parts of multi-wall carbon nanotube-montmorillonite composite reinforcing filler, 4 parts of pp flame retardant masterbatch.

[0058] The preparation method of the wear-resistant modified polypropylene base material is the same as that of Example 1.

[0059] The preparation method of the nano-silica-sisal fiber composite wear-resistant filler is the same as in Example 1.

[0060] The EPDM dispersion is prepared by mixing EPDM rubber with a diluent at a mass ratio of 1:10; wherein the diluent is composed of n-propyl acetate, ethyl acetate, and propylene glycol methyl ether acetate according to the mass ratio The ratio is 6:4:1 mixed.

[0061]...

Embodiment 3

[0067] A high-strength wear-resistant modified polypropylene material in this embodiment includes the following raw materials in parts by weight: 167 parts of wear-resistant modified polypropylene base material, 20 parts of nano-silica-sisal fiber composite wear-resistant filler, three 42 parts of ethylene propylene rubber dispersion, 12 parts of multi-wall carbon nanotube-montmorillonite composite reinforcing filler, 7 parts of pp flame retardant masterbatch.

[0068] The preparation method of the wear-resistant modified polypropylene base material is the same as that of Example 1.

[0069] The preparation method of the nano-silica-sisal fiber composite wear-resistant filler is the same as in Example 1.

[0070] The EPDM dispersion is prepared by mixing EPDM rubber with a diluent at a mass ratio of 1:10; wherein the diluent is composed of n-propyl acetate, ethyl acetate, and propylene glycol methyl ether acetate according to the mass ratio The ratio is 6:4:1 mixed.

[0071]...

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Abstract

The invention discloses a high-strength and corrosion-resistant modified polypropylene material. The polypropylene material is prepared from the following raw materials: an abrasion-resistant modifiedpolypropylene base material, a nano silica and sisal fiber composite abrasion-resistant filler, ethylene-propylene-diene monomer dispersing liquid, a multi-walled carbon nanotube and montmorillonitecomposite reinforcing filler and PP flame-retardant masterbatch. During preparation, modified isotactic polypropylene is taken as the base material, after the base material is mixed with the compositeabrasion-resistant filler, the composite reinforcing filler and the PP flame-retardant masterbatch for filling modification, melt spinning is conducted, and thus a fiber mesh cloth matrix with good abrasion resistance, tensile strength, compressive strength, heat resistance and flame retardancy is obtained; and then on the basis that the polypropylene material obtained after infiltration treatment through the ethylene-propylene-diene monomer dispersing liquid and electret discharging keeps good impact resistance and mechanical properties, a woven bag woven by the polypropylene material has good properties of abrasion resistance, tensile strength, dust prevention and ultraviolet resistance, and the multifunctional development demands of the packaging bag are met.

Description

technical field [0001] The invention relates to the technical field of materials for woven bags, in particular to a high-strength wear-resistant modified polypropylene material. Background technique [0002] Polypropylene, a semi-crystalline thermoplastic, is one of the most promising thermoplastic polymer materials today. Compared with other general-purpose thermoplastics, polypropylene has the characteristics of low density, good impact resistance, excellent mechanical properties, good chemical stability, etc., and it is abundant in sources and low in price. At present, woven bags made of polypropylene materials can meet the development requirements of light weight, low cost, and environmental protection. With the development needs of diversified and functional woven bags, higher requirements are put forward for polypropylene materials. The common problems of existing polypropylene materials are poor toughness, very sensitive to notch, prominent low-temperature brittlene...

Claims

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Application Information

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IPC IPC(8): D06M10/02D06M15/693D01F8/06D01F8/16D01F1/10D06M101/20D06M101/38
CPCD01F1/10D01F8/06D01F8/16D06M10/025D06M15/693D06M2101/20D06M2101/38D06M2200/25D06M2200/30D06M2200/35
Inventor 王可智
Owner 温州晨光集团有限公司
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