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Heat-resistant and ageing-resistant long glass fiber reinforced PP (Polypropylene) material and preparation method as well as application thereof

A long glass fiber, aging-resistant technology, applied in the field of materials, can solve the problems of inability to be used for working temperature, impact resistance, mechanical properties, etc., and achieve the effect of improving aging resistance, improving mechanical properties, and reducing exposure

Inactive Publication Date: 2016-04-20
HUIZHOU CHANGYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some special fields, due to the high ambient temperature, the existing glass fiber reinforced PP materials have poor heat resistance, and the mechanical properties are significantly reduced at high temperatures.
However, the existing long glass fiber-reinforced PP materials are prone to aging at high temperatures, and the impact resistance is reduced and easy to break, which cannot meet the needs of long-term use, especially when the working temperature is high and the reliability requirements are high. Raw materials for the production of auto parts and aviation parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a heat-resistant and aging-resistant long glass fiber reinforced PP material applied to the preparation of a smart meter casing, and its raw materials include by weight:

[0027] 25 parts of long glass fiber;

[0028] PP75 copies

[0029] 0.10 parts of heat stabilizer;

[0030] 0.7 part of antioxidant;

[0031] 2 parts of flame retardant;

[0032] Its raw material of described thermal stabilizer comprises by weight 0.4 part of propylene glycol, 3 parts of sodium carbonate, 0.06 part of hydroxyethyl cellulose; Oxybenzaldehyde.

[0033] Further, the long glass fiber is an alkali-free continuous glass fiber, and the diameter of the alkali-free continuous glass fiber is 11-20 μm.

[0034] Further, the preparation method of the long glass fiber is:

[0035] (1) Soaking treatment in n-heptane: soak the long glass fiber in n-heptane for swelling treatment, the treatment time is 25h;

[0036] (2) Ethanol washing: Heat the swollen long glass fiber...

Embodiment 2

[0044] This embodiment provides a heat-resistant and aging-resistant long glass fiber reinforced PP material for manufacturing aircraft parts, and its raw materials include by weight:

[0045] 35 parts of long glass fiber;

[0046] PP70 copies

[0047] 0.25 parts of heat stabilizer;

[0048] 0.2 part of antioxidant;

[0049] 3 parts of flame retardant;

[0050] Its raw material of described thermal stabilizer comprises by weight 0.3 part of propylene glycol, 7 parts of sodium carbonate, 0.01 part of hydroxyethyl cellulose; Oxybenzaldehyde.

[0051] Further, the long glass fiber is an alkali-free continuous glass fiber, and the diameter of the alkali-free continuous glass fiber is 20 μm.

[0052] Further, the preparation method of the long glass fiber is:

[0053] (1) Soaking treatment in n-heptane: immerse the long glass fiber in n-heptane for swelling treatment, and the treatment time is 22 hours;

[0054] (2) Ethanol washing: Heat the swollen long glass fiber to 150°C, ...

Embodiment 3

[0059] This embodiment provides a heat-resistant and aging-resistant long glass fiber reinforced PP material, the raw materials of which include by weight:

[0060] 20 parts of long glass fiber;

[0061] PP80 copies

[0062] 0.01 parts of heat stabilizer;

[0063] 0.9 part of antioxidant;

[0064] 1 part of flame retardant;

[0065] The raw materials of the heat stabilizer include 0.3-0.7 parts by weight of propylene glycol, 1-7 parts of sodium carbonate, and 0.01-0.08 parts of hydroxyethyl cellulose; the antioxidants include 1-6 parts by weight of antioxidant Agent 1010, 0.5-1.5 parts of p-methoxybenzaldehyde. Further, the long glass fiber is an alkali-free continuous glass fiber, and the diameter of the alkali-free continuous glass fiber is 11-20 μm. The long glass fiber reinforced PP material of this embodiment is prepared by the blending method of the prior art.

[0066] The composite material of this example was prepared into a 1000mm×1000mm×20mm plate-shaped part u...

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Abstract

The invention discloses a heat-resistant and ageing-resistant long glass fiber reinforced PP (Polypropylene) material and a preparation method as well as application thereof. A heat stabilizer is particularly added into a long glass fiber reinforced PP material; the mechanical property of the material at high temperature is effectively improved; the long glass fiber reinforced PP material is guaranteed to be still capable of stably working in a high-temperature environment; the application range of the long glass fiber reinforced PP material is effectively expanded; meanwhile, according to the heat-resistant and ageing-resistant long glass fiber reinforced PP material and the preparation method as well as the application thereof, an antioxidant is also particularly added into the long glass fiber reinforced PP material; the ageing resistance of the long glass fiber reinforced PP material is promoted; the service life and the reliability of the long glass fiber reinforced PP material can be effectively prolonged and improved. The long glass fiber reinforced PP material provided by the invention has better mechanical strength at the high temperature, has the outstanding ageing resistance at the same time, and is especially applicable to the application to the preparation of parts and components for automobiles, components for instruments and meters, electromechanical parts and components and electronic and electrical elements.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a heat-resistant and aging-resistant long glass fiber reinforced PP material and a preparation method and application thereof. Background technique [0002] Long glass fiber reinforced PP ((LFRT-PP)) material has excellent impact resistance, excellent mechanical properties and electrical insulation, and its service temperature range is generally between -100 and 160 °C, with high dimensional stability and creep resistance With high denaturation, it is a typical plastic integrating rigidity, hardness and toughness. Because of these advantages, polyglass fiber reinforced PP has been widely used in electronic appliances, office supplies, precision machinery, medical treatment, labor insurance, household goods and automobiles and other fields. However, in some special fields, due to the high ambient temperature, the existing glass fiber reinforced PP materials have poor heat resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L1/28C08K13/06C08K9/04C08K7/14C08K5/053C08K3/26C08K5/134C08K5/07
Inventor 杜崇铭林湖彬刘勋
Owner HUIZHOU CHANGYI TECH