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Toughened PP self-enhanced composite material and preparation method thereof

A technology for reinforcing composite materials and composite materials, which is applied in the field of toughened PP self-reinforced composite materials and its preparation, can solve the problems of affecting material recycling, poor compatibility, and reducing material toughness, etc., and achieves bonding effect. Good, positive environmental protection significance, the effect of convenient recycling and reuse

Inactive Publication Date: 2014-11-12
GUANGDONG BINHAO TRAVELWARE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, glass fiber and natural plant fiber are mostly used for PP reinforcement modification. Due to the difference in physical and chemical properties between PP matrix and reinforcement, their compatibility is not very good. Although these reinforcement fibers can improve the material The strength of the material, but it also reduces the toughness of the material, affects the use of the material, and also affects the recycling of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A toughened PP self-reinforced composite material, comprising: PP fibers account for 20% by mass, and PP resin accounts for 80% by mass; the PP resin is PP resin modified by a β-nucleating agent.

[0025] Among them, the amount of β-nucleating agent added is 0.5% of the mass of PP resin

[0026] The PP fiber is a long fiber or braid made of PP material.

[0027] The melting point of PP fiber is 20°C higher than that of PP resin under the same conditions.

[0028] The preparation method of the above-mentioned toughened PP self-reinforced composite material comprises the following steps:

[0029] (1) First, after mixing the β-nucleating agent and PP pellets, use a twin-screw granulator to granulate to obtain a PP modified resin, and use the PP resin modified by the β-nucleating agent to tablet Machine-made sheets;

[0030] (2) Hot pressing PP fiber or PP fiber woven cloth with the PP modified resin sheet prepared in step 1 to form a composite material, the composite ma...

Embodiment 2

[0033] A toughened PP self-reinforced composite material, comprising: 50% by mass of PP fiber and 50% by mass of PP resin; the PP resin is PP resin modified by a β-nucleating agent.

[0034] Among them, the amount of β-nucleating agent added is 0.15% of the mass of PP resin.

[0035] The PP fiber is a long fiber or braid made of PP material.

[0036] The melting point of PP fiber is 25°C higher than that of PP resin under the same conditions.

[0037] The preparation method of the above-mentioned toughened PP self-reinforced composite material comprises the following steps:

[0038] (1) First, after mixing the β-nucleating agent and PP pellets, use a twin-screw granulator to granulate to obtain a PP modified resin, and use the PP resin modified by the β-nucleating agent to tablet Machine-made sheets;

[0039] (2) Hot pressing PP fiber or PP fiber woven cloth with the PP modified resin sheet prepared in step 1 to form a composite material, the composite material is PP modifi...

Embodiment 3

[0042] A toughened PP self-reinforced composite material, comprising: PP fibers account for 75% by mass, and PP resin accounts for 25% by mass; the PP resin is PP resin modified by a β-nucleating agent.

[0043] Among them, the amount of β-nucleating agent added is 2% of the mass of PP resin

[0044] The PP fiber is a long fiber or braid made of PP material.

[0045] The melting point of PP fiber is 30°C higher than that of PP resin under the same conditions.

[0046] The preparation method of the above-mentioned toughened PP self-reinforced composite material comprises the following steps:

[0047] (1) First, after mixing the β-nucleating agent and PP pellets, use a twin-screw granulator to granulate to obtain a PP modified resin, and use the PP resin modified by the β-nucleating agent to tablet Machine-made sheets;

[0048] (2) Hot pressing PP fiber or PP fiber woven cloth with the PP modified resin sheet prepared in step 1 to form a composite material, the composite mate...

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Abstract

The invention discloses a toughened PP self-enhanced composite material and a preparation method thereof. PP resin is enhanced by utilizing a PP fiber, wherein the material comprises 20-75 mass percent of the PP fiber and 25-80 mass percent of the PP resin, and the sum of mass percent of the two raw materials is 100 percent. The PP fiber refers to a long fiber or a woven fabric prepared by using high-melting-point PP, the PP resin refers to modified PP resin prepared by adding a beta nucleating agent, the toughness of the PP resin is effectively improved, and the melting temperature of the PP resin is reduced, so that the melting point of the PP modified resin is 20-30 DEG C lower than that of the PP fiber, and when the PP fiber self-enhanced composite material is prepared at a certain temperature, the PP resin is melted, PP and the PP fiber are well adhered together, however, the PP fiber is not melted, and high orientation of the PP fiber is guaranteed. Therefore, the effect is enhanced.

Description

technical field [0001] The invention relates to the technology in the field of plastic materials, in particular to a toughened PP self-reinforced composite material and a preparation method thereof. Background technique [0002] Inexpensive and widely available, polypropylene (PP) is a common general-purpose plastic. It has good physical and mechanical properties, chemical corrosion resistance and easy processing and molding. However, PP also has disadvantages such as low strength, large molding shrinkage, and easy warping of products. It is usually modified by blending, copolymerization, and composite reinforcement. [0003] At present, glass fiber and natural plant fiber are mostly used for PP reinforcement modification. Due to the difference in physical and chemical properties between PP matrix and reinforcement, their compatibility is not very good. Although these reinforcement fibers can improve the material However, it also reduces the toughness of the material, aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B37/10C08L23/12
Inventor 林文彬徐巍杨敦孟跃中王拴紧
Owner GUANGDONG BINHAO TRAVELWARE