CN105542284A - Septic tank special material and preparation method thereof - Google Patents

Abstract

The invention discloses a septic tank special material with good processing fluidity. The septic tank special material is prepared from the following components in parts by weight: 100 parts of HDPE (high-density polyethylene); 5 to 20 parts of calcium carbonate; 1 to 10 parts of PP (propene polymer); 1 to 5 parts of naphthenic oil; 0.5 to 2 parts of zinc stearate. The invention also discloses a preparation method of the septic tank special material. The preparation method comprises the following steps: S1, mixing the HDPT, the calcium carbonate, the PP, the naphthenic oil, the zinc stearate and the SEBS, softening and fusing; S2, smashing an anti-bio agent and spraying on LLDPE (linear low density polyethylene) flux, and cooling to room temperature, so as to obtain an anti-bio microcapsule; S3, adding the anti-bio capsule obtained in S2 into the fusant of S1, and performing injection molding.

Description

Septic tank PP Pipe Compound and preparation method thereof

Technical field

The present invention relates to cesspool sewage process field, more particularly, it relates to a kind of septic tank PP Pipe Compound and preparation method thereof.

Background technology

Septic tank, it is a kind of principle utilizing precipitation and anaerobically fermenting, remove the organic treatment facility of suspension in sanitary sewage, it belongs to elementary transitional sanitary sewage disposal structures, and therefore it is being purified waste water and is preventing from playing a positive role in line clogging.Traditional septic tank to be mixed by brick or concrete constructions forms, but situation about revealing can be there is in use for some time in this traditional septic tank, sewage enters underground environment and causes secondary pollution to underground water etc., in addition, these traditional septic tanks are comparatively heavy, its construction and maintenance all comparatively inconvenience.Therefore, use type material to build septic tank and become one of research direction in current industry.

Authorization Notice No. is that the Chinese patent of CN201245534Y discloses a kind of high density polyethylene(HDPE) (HDPE) septic tank, and its pond body is made up of square groove shape high density polyethylene(HDPE) winding structure pipe.Compare with traditional manure pit, intensity and the environmental stress crack resistance of this high density polyethylene(HDPE) septic tank are all improved, but the processing fluidity relative mistake of HDPE is a little, and its processing exists certain difficulty.

Summary of the invention

For the deficiency that prior art exists, the object of the present invention is to provide the septic tank PP Pipe Compound that a kind of processing fluidity is good.

For achieving the above object, the invention provides following technical scheme:

A kind of septic tank PP Pipe Compound, with weight parts, comprises following component:

HDPE100 part;

5 ~ 20 parts, calcium carbonate;

PP1 ~ 10 part;

Naphthenic oil 1 ~ 5 part;

Zinic stearas 0.5 ~ 2 part.

As preferably, the PD of described HDPE is 1.5 ~ 3.

As preferably, also comprise 1 ~ 5 part of SEBS.

As preferably, the degree of crystallinity of described HDPE is 70 ~ 75%.

As preferably, also comprise 0.5 ~ 1 part of anti-biological microcapsule.

As preferably, described anti-biological microcapsule are made up of anti-biological dose of 80 ~ 90wt%LLDPE and 10 ~ 20wt%.

As preferably, described anti-biological microcapsule prepare by the following method: pulverize anti-biological dose and spray LLDPE melt, be cooled to room temperature and get final product.

As preferably, the described anti-biological dose of at least one being selected from capsaicine or thiram.

Another object of the present invention is to the preparation method that a kind of septic tank PP Pipe Compound is provided, comprise the steps:

S1, by HDPE, calcium carbonate, PP, naphthenic oil, Zinic stearas, SEBS mixing, softening melting;

S2, anti-biological dose pulverized and sprays LLDPE melt, being cooled to room temperature, obtaining anti-biological microcapsule;

S3, the anti-biological microcapsule obtained by S2 are added in the melts of S1, injection moulding.

By adopting technique scheme, there is following beneficial effect:

1.HDPE (high density polyethylene(HDPE)) is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity, and it has higher rigidity, is specially adapted to the equipment such as septic tank, but due to the entanglement between HDPE molecular chain, cause its processing fluidity poor, for its processing brings certain obstruction, the application by adding calcium carbonate in HDPE, PP (polypropylene), naphthenic oil, Zinic stearas, calcium carbonate can play the effect strengthening rigidity, it can also keep the dimensional stability of system, PP and HDPE interacts between the two simultaneously, entanglement between the molecular chain of HDPE can play certain decline, the synergy of naphthenic oil and Zinic stearas can strengthen the interaction between HDPE and PP in addition, entanglement between the molecular chain of further reduction HDPE, research finds the interpolation (testing data referring to embodiment 1 to embodiment 7) by the application, the second-order transition temperature of its HDPE is effectively declined, and find that the septic tank PP Pipe Compound of the application can be softened at about about 80 DEG C in test, its processing fluidity is better, easy to process,

The HDPE simultaneously causing the resistance to impact shock of HDPE more common due to the high-crystallinity of HDPE is on the low side, this will cause HDPE under impact force action particularly low temperature time easily rupture, this kind of equipment needing to adapt to various temperature of septic tank can not be applicable to completely, the application by adding calcium carbonate in HDPE, PP (polypropylene), naphthenic oil, Zinic stearas, it is under there is not obvious situation in rigidity, it changes the crystal parameter of HDPE by the material added, thus make it at-40 DEG C, room temperature (25 DEG C), toughness at 50 DEG C and rigidity all can be consistent substantially, its toughness (by resistance to impact shock embody) and rigidity comparatively stable,

2. the PD (molecular weight distributing index, it equals Mw/Mn) selecting HDPE is further 1.5 ~ 3, under the prerequisite ensureing its intensity, owing to there is part low molecular weight part in HDPE, can improve the processing fluidity of HDPE further;

3. add SEBS (styrene-ethylene-butylene-styrene block copolymer) further, at normal temperatures, polystyrene block is firmly strong, incompatible with the elastomeric blocks (soft section) of centre, in phase-separated state, polystyrene block formed phase region be scattered in elastic matrix mutually in, and elastomeric blocks interlocking is become the networking of physical crosslinking, it is by the interaction with HDPE, further raising HDPE toughness, simultaneously ensure HDPE under various temperature with the consistency of unclassified stores;

4. the degree of crystallinity selecting HDPE is further 70 ~ 75%, and except ensureing its intensity, adding portion non-crystalline state, can improve the processing fluidity of HDPE further, can improve toughness simultaneously;

5. add bio-microcapsule further, biological biting to the application's septic tank PP Pipe Compound can be prevented, the biological loss caused that bites can be reduced, adopt the form of microcapsule and anti-biological microcapsule are made up of LLDPE and anti-biological dose simultaneously, anti-biological dose is wrapped in LLDPE, in the preparation of the septic tank PP Pipe Compound of the application, anti-biological dose is protected to make it not be subject to the impact of external environment and keep its effect during use, and LLDPE and HDPE, anti-biological dose all has good consistency, it can improve the consistency between anti-biological dose and HDPE, the intensity of LLDPE is relatively little simultaneously, when biological occlusions such as mouse, it is first bitten the little LLDPE of intensity into pieces and tastes anti-biological dose, the biologies such as mouse can be subject to intense stimulus and abandon eating, the HDPE playing in fact enhancement can not be damaged, septic tank is normally worked.

Embodiment

Embodiment

A kind of septic tank PP Pipe Compound, its component and parts by weight as described in Table 1, it prepares by the following method:

S1, by the HDPE of formula ratio, calcium carbonate, PP, naphthenic oil, Zinic stearas, SEBS mixing, in 80 ~ 150 DEG C of softening meltings;

S2, anti-biological dose pulverized and sprays LLDPE melt, being cooled to room temperature, obtaining anti-biological microcapsule;

S3, the anti-biological microcapsule obtained by S2 are added in the melts of S1, and injection moulding obtains septic tank PP Pipe Compound described in the application.

The component of table 1 septic tank PP Pipe Compound and parts by weight statistics thereof

Comparative example

Control sample: be 1.1 with PD value and degree of crystallinity is the HDPE of 90% is control sample 1, is 4 with PD value and degree of crystallinity is the HDPE of 80% is control sample 2, take LLDPE as control sample 3.

Sample embodiment 1 to 7 prepared, control sample 1 to 3 are test specimens, and carry out all-round property testing with reference to GB, test result is as shown in table 2 and table 3.Wherein, each sample parallel tests three times: after each sample preparation is good, gets three samples at random; And tensile strength and resistance to impact shock are tested respectively under-50 DEG C, 25 DEG C and 40 DEG C of conditions.

The all-round property testing result statistics of the sample of table 2 embodiment 1 to 7

The all-round property testing result statistics of table 3 control sample 1 to 3

The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a septic tank PP Pipe Compound, is characterized in that, with weight parts, comprises following component:

HDPE100 part;

5 ~ 20 parts, calcium carbonate;

PP1 ~ 10 part;

Naphthenic oil 1 ~ 5 part;

Zinic stearas 0.5 ~ 2 part.

2. septic tank PP Pipe Compound according to claim 1, is characterized in that, the PD of described HDPE is 1.5 ~ 3.

3. septic tank PP Pipe Compound according to claim 1, is characterized in that, with weight parts, also comprises 1 ~ 5 part of SEBS.

4. septic tank PP Pipe Compound according to claim 1, is characterized in that, the degree of crystallinity of described HDPE is 70 ~ 75%.

5. septic tank PP Pipe Compound according to claim 1, is characterized in that, with weight parts, also comprises 0.5 ~ 1 part of anti-biological microcapsule.

6. septic tank PP Pipe Compound according to claim 5, is characterized in that, described anti-biological microcapsule are made up of anti-biological dose of 80 ~ 90wt%LLDPE and 10 ~ 20wt%.

7. septic tank PP Pipe Compound according to claim 5, is characterized in that, described anti-biological microcapsule prepare by the following method: pulverize anti-biological dose and spray LLDPE melt, be cooled to room temperature and get final product.

8. septic tank PP Pipe Compound according to claim 6, is characterized in that, the described anti-biological dose of at least one being selected from capsaicine or thiram.

9. a preparation method for septic tank PP Pipe Compound, is characterized in that, comprises the steps:

S1, by HDPE, calcium carbonate, PP, naphthenic oil, Zinic stearas, SEBS mixing, softening melting;

S2, anti-biological dose pulverized and sprays LLDPE melt, being cooled to room temperature, obtaining anti-biological microcapsule;

S3, the anti-biological microcapsule obtained by S2 are added in the melts of S1, injection moulding.

10. the preparation method of a kind of septic tank PP Pipe Compound according to claim 1, is characterized in that, the temperature of the softening melting of described S1 is 80 ~ 150 DEG C.