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Material for reinforced plastic woven bag

A technology for reinforced plastics and woven bags, which is applied in the field of polymer materials for woven bags, can solve the problems of resin matrix crystallization defects, reduced material tensile strength, and low impact strength, and achieve excellent tensile strength, increase strength, and accelerate The effect of energy dissipation

Active Publication Date: 2017-06-23
浙江海威包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common and most stable crystal form in isotactic polypropylene is the α crystal form, but the α crystal form polypropylene has the problem of low impact strength
[0004] At the same time, in the production of woven bags with polypropylene as the resin matrix, many woven bag manufacturers will add calcium carbonate fillers to the woven bags in order to reduce costs. The particle size of 400-mesh calcium carbonate particles is relatively large, reaching 38μm. Even the 800-mesh ultra-fine calcium carbonate powder can reach 15μm
With the increase of calcium carbonate particles, crystallization defects are prone to occur in the resin matrix, resulting in a decrease in the tensile strength of the material

Method used

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  • Material for reinforced plastic woven bag
  • Material for reinforced plastic woven bag
  • Material for reinforced plastic woven bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0029] Embodiment 1-5: A kind of reinforced plastic woven bag material, adopts following method to prepare:

[0030] S1: Take the formula amount of pimelic acid, stearate and calcium carbonate whiskers, first dissolve pimelic acid in ethanol, then gradually add ethanol dropwise to the mixed solid of stearate and calcium carbonate whiskers, Stir while adding dropwise; stir until dry under the condition of 40-50°C, set aside;

[0031] S2: Surface activation of talcum powder: configure the silane coupling agent into an ethanol solution with a mass concentration of 1.2%-1.5%, drop it into the talc powder, and continue stirring at 40-50°C for 6 After -8h, transfer to a vacuum oven at 100°C to dry for 2h, take it out after drying, and grind for later use;

[0032] S3: Take the isotactic polypropylene, low-density polyethylene, molybdenum disulfide, antioxidant, ultraviolet light absorber, talcum powder processed through step S2, pimelic acid and stearate processed through step S1 i...

Embodiment 6-14

[0037] Embodiments 6-14: A material for reinforced plastic woven bags. The difference from Embodiment 1 is that the proportions of the components are different. See Table 2 for the proportions of the components.

[0038] Component and content table of table 2 embodiment 1, embodiment 6-14

[0039]

Embodiment 15

[0040] Embodiment 15: A material for reinforced plastic woven bags. The difference from Embodiment 1 is that the stearate is a 1:1 compound of calcium stearate and zinc stearate.

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Abstract

The invention discloses a material for a reinforced plastic woven bag. The material is characterized by being prepared from the following raw materials in parts by weight: 100 parts of isotactic polypropylene, 18 to 30 parts of low density polyethylene, 3.2 to 5.4 parts of molybdenum disulfide, 0.8 to 1.2 parts of an antioxidant, 2 to 4 parts of an ultraviolet absorbent, 6 to 12 parts of talcum powder, 0.01 to 0.2 part of pimelic acid, 0.4 to 1.2 parts of stearate and 2 to 10 parts of calcium carbonate whiskers, wherein stearate comprises calcium stearate. The material has the advantages of high tensile strength and high toughness.

Description

technical field [0001] The invention relates to the technical field of polymer materials for woven bags, in particular to a material for reinforced plastic woven bags. Background technique [0002] Plastic woven bags, with polyethylene or polypropylene as the main material, are widely used in the packaging of cement, agricultural products, rice noodles, tourism transportation and daily necessities. [0003] Isotactic polypropylene is a typical polycrystalline semi-crystalline polymer. Its common crystal forms include monoclinic (α), trigonal (β), triclinic (γ) and tetragonal or bi-tetragonal (e), among which the most stable Good α crystal form and β crystal form in metastable state have great industrial and economic value. The most common and most stable crystal form in isotactic polypropylene is the α crystal form, but the α crystal form polypropylene has the problem of low impact strength. [0004] At the same time, in the production of woven bags with polypropylene as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K13/06C08K9/12C08K9/06C08K7/08C08K3/26C08K5/098C08K3/30C08K7/00C08K3/34
CPCC08K2003/265C08K2003/3009C08K2201/003C08K2201/014C08L23/12C08L2205/242C08L2207/10C08L23/06C08K13/06C08K9/12C08K9/06C08K7/08C08K3/26C08K5/098C08K3/30C08K7/00C08K3/34
Inventor 黄云造黄海威
Owner 浙江海威包装有限公司
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