CN104964893A - Vegetable fiber/PP composite material felt component detection method - Google Patents

Abstract

The invention provides a vegetable fiber/PP composite material felt component detection method. The method comprises the following steps: selecting a material, manually combing, drying, weighing, carrying out alkali solution dissolving, filtering, carrying out acid solution dissolving, filtering, cleaning to obtain PP fibers, drying, weighing, and calculating according to a formula shown in the specification in order to obtain the component ratio.

Description

A kind of detection method of vegetable fibre/PP composite material felt component

Technical field

The present invention is specifically related to the detection method of a kind of vegetable fibre/PP composite material felt component.

Background technology

Novel natural plants compound substance is in preparation process, although vegetable fibre and PP fiber are fed intake after necessarily weighing than row when material technology designs, but in one-tenth felt technological process because of mixing, shredding, combing, the operation such as to arrange net is subject to the effect such as mechanical external force and metal iron nail causes fiber to occur fracture, lose, wherein vegetable fibre appearance to lose ratio maximum.This is because vegetable fibre reinforcement often has relatively large fragility as jute, sisal hemp, bamboo fibre etc., causes vegetable fibre content to run off in a large number, the desired value of the therefore component of the final compound substance obtained non-originating design.In order to ensure the vegetable fibre made/PP nanocomposite constituents content, just must carry out accurate Quick Measurement to the component concentration of manufactured goods, to monitor manufactured goods quality in real time.At present, each component measuring method of associated materials has no report.

Summary of the invention

The technical problem to be solved in the present invention, is the detection method providing a kind of vegetable fibre/PP composite material felt component.

The present invention is achieved in that the detection method of a kind of vegetable fibre/PP composite material felt component, comprises the following steps:

(1) selection: choose evenly neat vegetable fibre/PP composite felt, cuts 10cm × 10cm size rectangular block at random;

(2) comb solution by hand: glass dish composite felt being placed in known quality, comb solution by hand, shear and tear and fall apart into threadiness, put into baking oven, at 60 DEG C ~ 110 DEG C, dry 3h ~ 8h, obtain composite fibre, weigh the gross mass m obtaining composite fibre _always;

(3) dissolve: composite fibre is placed in the NaOH solution boiling of 5% ~ 30%, heating-up temperature 75 DEG C ~ 95 DEG C, heat time 15min ~ 45min; Filter after soda boiling, abandon filtrate, insolubles is placed in the HNO of 10% ~ 90% ₃or H ₂sO ₄again dissolve in solution, after vegetable fibre dissolves completely, filter, obtain undissolved PP fiber, fully clean 3 ~ 5 times with clear water;

(4) weigh: PP fiber is placed in baking oven, at 60 DEG C ~ 90 DEG C, dries 8h ~ 12h, weigh, obtain the quality m of PP fiber _pP; If vegetable fibre quality is m _plant, the component proportion according to composite felt described in following formulae discovery:

The invention has the advantages that: the present invention easy, accurately can measure the vegetable fibre/component proportion of PP compound substance in manufactured goods, improve the component proportion degree of accuracy of composite material of plant fiber, for compound substance machinery performance measuring and calculating and theoretical modeling provide strong proportioning parameter guarantee, also effective foundation can be provided for the design and processes optimum configurations of the detection of fiber content, checking, assessment and compound substance processing machinery.

Embodiment

A kind of detection method of vegetable fibre/PP composite material felt component, comprises the following steps:

(1) selection: choose evenly neat vegetable fibre/PP composite felt, cuts 10cm × 10cm size rectangular block at random;

(2) solution is combed by hand: glass dish composite felt being placed in known quality, comb solution by hand, shear and tear and fall apart into threadiness, put into baking oven, at 60 DEG C ~ 110 DEG C, dry 3h ~ 8h to water percentage < 1%, obtain composite fibre, weigh the gross mass m obtaining composite fibre _always;

(3) dissolve: composite fibre is placed in the NaOH solution boiling of 5% ~ 30%, heating-up temperature 75 DEG C ~ 95 DEG C, heat time 15min ~ 45min; Filter after soda boiling, abandon filtrate, insolubles is placed in the HNO of 10% ~ 90% ₃or H ₂sO ₄again dissolve in solution, after vegetable fibre dissolves completely, filter, obtain undissolved PP fiber, fully clean 3 ~ 5 times with clear water;

(4) weigh: PP fiber is placed in baking oven, at 60 DEG C ~ 90 DEG C, dries 8h ~ 12h, weigh, obtain the quality m of PP fiber _pP; If vegetable fibre quality is m _plant, according to the component proportion of composite felt described in following formulae discovery, repeated test at least 5 times, average:

For clearly illustrating herein, as follows especially exemplified by embodiment:

Embodiment one

Step 1: selection samples: choose evenly neat tossa/PP composite felt (it prepares charge ratio is PP: tossa=55:45), cut 5 10cm × 10cm size rectangular blocks at random;

Step 2: comb solution by hand: glass dish composite felt being placed in known quality, comb solution by hand, shear and tear and fall apart into threadiness, put into baking oven, at 60 DEG C, dry 8h to water percentage < 1%, claim composite fibre quality is respectively 14.9g, 15.5g, 15.3g, 14.9g, 14.8g;

Step 3: dissolve: the fiber of 5 kinds of shreddings is put into respectively the NaOH solution boiling of 30%, heating-up temperature 75 DEG C, heat time 15min, filters after soda boiling, undissolved potpourri is put into the HNO of 70% ₃again dissolve in solution, after tossa dissolves completely, filter out undissolved PP fiber, fully repeatedly clean 3 ~ 5 times with clear water;

Step 4: weigh: the PP fiber that 5 groups are cleaned is placed in baking oven respectively, dry 12h at 60 DEG C in an oven, after weigh, claim quality is respectively 9.2g, 9.6g, 9.4g, 9.0g, 9.0g, by computing formula and the real composition proportioning that calculating mean value obtains this composite material felt is PP: tossa=61:39.

Embodiment two

This part and embodiment one difference are:

Step 1: select sisal hemp/PP composite felt (it prepares charge ratio is PP: sisal fiber=50:50);

Step 2: drying condition, for dry 3h at 110 DEG C, claims 5 groups of composite fibre quality are respectively 14.3g, 14.7g, 14.4g, 14.4g, 14.5g;

Step 3:NaOH concentration is 10%, and heating-up temperature is 80 DEG C, and the heat time is 35min, HNO ₃concentration is 10%;

Step: 4: dry 8h at 90 DEG C in an oven, claim PP quality is respectively 8.3g, 8.5g, 8.3g, 8.2g, 8.4g is PP by calculating the real composition proportioning obtained: sisal fiber=58:42.

Embodiment three

This part and embodiment two difference are:

Step 1: select bamboo fibre/PP composite felt (it prepares charge ratio is PP: bamboo fibre=40:60);

Step 2: drying condition, for dry 6h at 80 DEG C, claims 5 groups of composite fibre quality are respectively 14.7g, 15.2g, 14.9g, 15.4g, 14.8g;

Step 3:NaOH concentration is 5%, and heating-up temperature is 95 DEG C, and the heat time is 45min; H ₂sO ₄concentration is 90%;

Step 4: dry 6h at 80 DEG C in an oven, claim PP quality is 7.3g, 7.5g, 7.3g, 7.5g, 7.1g, the real composition proportioning being obtained this composite material felt by computing formula is PP: bamboo fibre=49:51.

The present invention takes full advantage of the chemical stability of PP fiber, consider the chemical composition part of vegetable fibre, chief component is cellulose, lignin and hemicellulose, aqueous slkali is first utilized to wash away the lignin of vegetable fibre and hemicellulose and portion of cellulose, recycling acid solution dissolves cellulose and other residuums of vegetable fibre, and PP fiber is effectively extracted the component proportion calculating compound substance.The present invention easy, accurately can measure the vegetable fibre/component proportion of PP compound substance in manufactured goods, improve the component proportion degree of accuracy of composite material of plant fiber, for compound substance machinery performance measuring and calculating and theoretical modeling provide strong proportioning parameter guarantee, also effective foundation can be provided for the design and processes optimum configurations of the detection of fiber content, checking, assessment and compound substance processing machinery.

Claims (1)

1. a detection method for vegetable fibre/PP composite material felt component, is characterized in that: comprise the following steps:

(1) selection: choose evenly neat vegetable fibre/PP composite felt, cuts 10cm × 10cm size rectangular block at random;

(2) comb solution by hand: glass dish composite felt being placed in known quality, comb solution by hand, shear and tear and fall apart into threadiness, put into baking oven, at 60 DEG C ~ 110 DEG C, dry 3h ~ 8h, obtain composite fibre, weigh the gross mass m obtaining composite fibre _always;

(3) dissolve: composite fibre is placed in the NaOH solution boiling of 5% ~ 30%, heating-up temperature 75 DEG C ~ 95 DEG C, heat time 15min ~ 45min; Filter after soda boiling, abandon filtrate, insolubles is placed in the HNO of 10% ~ 90% ₃or H ₂sO ₄again dissolve in solution, after vegetable fibre dissolves completely, filter, obtain undissolved PP fiber, fully clean 3 ~ 5 times with clear water;

(4) weigh: PP fiber is placed in baking oven, at 60 DEG C ~ 90 DEG C, dries 8h ~ 12h, weigh, obtain the quality m of PP fiber _pP; If vegetable fibre quality is m _plant, the component proportion according to composite felt described in following formulae discovery: