High-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and preparation method thereof

A long glass fiber and polypropylene technology is applied in the field of organic polymer composite materials, which can solve the problems of limiting the long-term application of glass fiber polypropylene composite materials, affecting the smoothness and appearance of products, and poor two-phase interface compatibility. Achieve the effect of reducing shrinkage, improving mechanical properties, and reducing surface polarity

Active Publication Date: 2016-06-15
STARWAY INTERNATIONAL HOME LIVING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene is a non-polar product, while glass fiber is a polar product due to the large amount of active functional groups on the surface, so the compatibility of the two-phase interface is not good
At the same time, if the glass fiber content is large (>20%), the glass fiber will be exposed on the surface of the composite material due to the poor coating of polypropylene, resulting in a large number of floating fibers in

Method used

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  • High-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Preparation of main toughening agent masterbatch

[0036] The main toughening agent masterbatch is an organic long glass fiber masterbatch, and the preparation method is as follows:

[0037] (1) Put 1kg of flame retardant, 1kg of coupling agent, 12kg of maleic anhydride, 4kg of polyvinyl alcohol emulsion and 1kg of nano-calcium carbonate in a container, stir and react at a constant temperature of 55°C for 5 hours to obtain a wetting agent liquid;

[0038] (2), put the sizing liquid and long glass fiber described in step (1) into a high-speed mixer for mixing treatment, the mixing time is 2 hours, to obtain a long glass fiber blend, the sizing liquid and long glass fiber The mass ratio is 3:11;

[0039] (3), the long glass fiber blend of step (2) is blended with the polypropylene resin whose mass ratio is 3:1, and placed in a high-speed mixer for mixing treatment, the mixing time is 0.5 hour, and then placed in Bake in an oven at 80°C for 2-4 hours, and set aside; i...

Embodiment 2

[0052] This example is basically the same as Example 1, except that, in the step of preparing the high-gloss and clean long glass fiber flame-retardant and toughened polypropylene blend material, the polypropylene resin is 70 kg, and the synergistic toughening agent masterbatch is 25 kg. The chain extender is 2.0kg, the anti-floating fiber agent is 5kg, and the main toughening agent masterbatch is 40kg.

Embodiment 3

[0054] This example is basically the same as Example 1, except that, in the step of preparing the high-gloss and clean long glass fiber flame-retardant and toughened polypropylene blend material, the polypropylene resin is 60 kg, and the synergistic toughening agent masterbatch is 20 kg, The chain extender is 1kg, the anti-floating fiber agent is 3kg, and the main toughening agent masterbatch is 35kg.

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Abstract

The invention belongs to the technical field of high-polymer composite materials, and relates to a high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and a preparation method thereof. The preparation method comprises the following steps: A. preparing the following components in parts by mass: 50-70 parts of polypropylene resin, 10-25 parts of synergic toughener master batch, 0.5-2.0 parts of chain extender, 2-5 parts of anti-floating fiber agent and 25-40 parts of main toughener master batch; B. blending: adding the components in the step A into an extruder, and blending to obtain a blend; and C. preparation: drawing the blend in the step B out of the head of an extruder, cooling, blow-drying, and granulating to obtain the high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material. The high-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material is especially suitable for medium/high-end furniture supplies with higher requirements for product shape structure and appearance, cost, processibility and the like.

Description

technical field [0001] The invention belongs to the technical field of organic polymer composite materials, and relates to a high-gloss and clean long glass fiber flame-retardant and toughened polypropylene blend material and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin with excellent mechanical properties and relatively moderate price, which is widely used in the field of furniture materials. At present, domestic factories generally use direct injection molding of unmodified polypropylene, but the product performance is poor. Although polypropylene furniture has good resistance to light, oil, and chemical solvents, it has poor hardness. It should prevent collisions and scratches by hard objects at the tip of a knife. At present, the main performance requirements of high-end furniture materials are 1) high strength and high toughness; 2) bright surface; 3) moderate price. Therefore, it is necessary to modify the propert...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08K13/06C08K9/08C08K9/04C08K9/06C08K7/14C08K3/34C08K3/26C08K5/3492C08J3/22
CPCC08J3/226C08J2323/12C08J2423/12C08K2201/003C08K2201/011C08K2201/016C08L23/12C08L2201/02C08L2205/025C08L2205/035C08L23/0815C08L23/0853C08K13/06C08K9/08C08K9/04C08K9/06C08K7/14C08K3/34C08K2003/265C08K5/34922
Inventor 叶根林
Owner STARWAY INTERNATIONAL HOME LIVING CO LTD
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